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1.
Front Bioeng Biotechnol ; 12: 1322985, 2024.
Article in English | MEDLINE | ID: mdl-38562667

ABSTRACT

Eucalyptus covers approximately 7.5 million hectares in Brazil and serves as the primary woody species cultivated for commercial purposes. However, native insects and invasive pests pose a significant threat to eucalyptus trees, resulting in substantial economic losses and reduced forest productivity. One of the primary lepidopteran pests affecting eucalyptus is Thyrinteina arnobia (Stoll, 1782) (Lepidoptera: Geometridae), commonly referred to as the brown looper caterpillar. To address this issue, FuturaGene, the biotech division of Suzano S.A., has developed an insect-resistant (IR) eucalyptus variety, which expresses Cry pesticidal proteins (Cry1Ab, Cry1Bb, and Cry2Aa), derived from Bacillus thuringiensis (Bt). Following extensive safety assessments, including field trials across various biomes in Brazil, the Brazilian National Technical Commission of Biosafety (CTNBio) recently approved the commercialization of IR eucalyptus. The biosafety assessments involved the analysis of molecular genomics, digestibility, thermostability, non-target organism exposure, degradability in the field, and effects on soil microbial communities and arthropod communities. In addition, in silico studies were conducted to evaluate allergenicity and toxicity. Results from both laboratory and field studies indicated that Bt eucalyptus is as safe as the conventional eucalyptus clone for humans, animals, and the environment, ensuring the secure use of this insect-resistant trait in wood production.

2.
Cir Pediatr ; 37(2): 75-78, 2024 Apr 01.
Article in English, Spanish | MEDLINE | ID: mdl-38623800

ABSTRACT

INTRODUCTION: Varicocele is the abnormal dilatation of the pampiniform plexus. It occurs in 15-20% of pre-adolescent/adult males. Varicocele diagnosis is important since it can induce testicular hypertrophy and fertility issues in adulthood. The objective of this study was to assess whether complications, including varicocele recurrence, depend on the vascular occlusion technique used -clipping + division vs. vascular sealer- in the laparoscopic Palomo technique used in our institution. MATERIALS AND METHODS: A longitudinal, prospective study was carried out from 2017 to 2021. Two therapeutic groups were created according to the vascular occlusion method used during laparoscopic varicocelectomy -clipping + division vs. vascular sealer. Patients were randomly allocated to the groups in a systematic alternating consecutive manner. Variables -age, varicocele grade according to the Dubin-Amelar classification, postoperative complications, follow-up, and varicocele recurrence- were analyzed according to the method employed. RESULTS: A total of 37 boys, with a mean age of 12 years (10-15 years) and a mean follow-up of 12 months, were studied. In 20 patients (54.1%), clipping + division was used, and in the remaining 17 (45.9%), the vascular sealer was employed. 24.3% had symptomatic Grade II varicocele and 75.7% had Grade III varicocele. 32.4% of the children had postoperative complications during follow-up. 29.7% of the patients had hydrocele following surgery -8 boys from the sealing group and 3 boys from the clipping group-, with 13.5% requiring re-intervention as a result of this. None of the patients had varicocele recurrence. CONCLUSIONS: The laparoscopic Palomo technique is safe and effective, with good results in pediatric patients and few postoperative complications, regardless of the vascular occlusion device used. In our study, no statistically significant differences regarding the use of clipping or vascular sealer in this laparoscopic technique were found. However, further studies with a larger sample size are required to find potential differences.


INTRODUCCION: El varicocele es la dilatación anormal del plexo pampiniforme. Puede afectar al 15-20% de los varones preadolescentes-adultos. La importancia de su diagnóstico radica en que puede inducir hipotrofia testicular y problemas de fertilidad en la etapa adulta. El objetivo de este estudio es evaluar si existe mayor índice de complicaciones, incluyendo la recurrencia del varicocele, dependiendo de la técnica de oclusión vascular utilizada: clip y sección o sellador vascular, en la técnica de Palomo laparoscópico en nuestro centro. MATERIAL Y METODOS: Estudio longitudinal prospectivo que se realiza de 2017 a 2021. Se crean dos grupos terapéuticos según el método de oclusión vascular utilizada durante la varicocelectomía laparoscópica: clip y sección o sellador vascular. Los pacientes son incluidos en un grupo mediante asignación sistemática consecutiva alternante. Se realiza el análisis de las variables: edad, grado de varicocele según la clasificación de Dubin-Amelar, complicaciones postquirúrgicas, seguimiento y recurrencia del varicocele, según el método empleado. RESULTADOS: Se intervinieron un total de 37 niños, con edad media de 12 años (10-15 años) y una media de seguimiento de 12 meses. En 20 pacientes (54,1%), se utilizó clip y sección, y en los 17 restantes (45,9%), sellador vascular. El 24,3% presentaba varicocele Grado II sintomático y el 75,7%, Grado III. El 32,4% de los niños presentó alguna complicación postquirúrgica durante el seguimiento. El 29,7% de los pacientes presentó hidrocele tras la intervención, perteneciendo 8 niños al grupo de sellado y 3 niños al de clipaje. El 13,5% de estos precisó reintervención por este motivo. Ningún paciente presentó recurrencia del varicocele. CONCLUSIONES: La técnica de Palomo laparoscópica es una técnica segura y efectiva que presenta buenos resultados en pacientes pediátricos, ya que presenta pocas complicaciones postquirúrgicas, independientemente del dispositivo de oclusión vascular que se utilice. En nuestro estudio, no se ha demostrado que existan diferencias estadísticamente significativas en cuanto al uso de clip o sellador vascular en esta técnica laparoscópica. No obstante, es preciso realizar más estudios con mayor tamaño muestral para hallar posibles diferencias.


Subject(s)
Laparoscopy , Varicocele , Male , Adolescent , Humans , Child , Prospective Studies , Varicocele/surgery , Retrospective Studies , Laparoscopy/methods , Postoperative Complications/epidemiology , Postoperative Complications/surgery , Treatment Outcome
3.
Cir. pediátr ; 37(2): 75-78, Abr. 2024. tab
Article in Spanish | IBECS | ID: ibc-232269

ABSTRACT

Introducción: El varicocele es la dilatación anormal del plexopampiniforme. Puede afectar al 15-20% de los varones preadolescentes-adultos. La importancia de su diagnóstico radica en que puede inducirhipotrofia testicular y problemas de fertilidad en la etapa adulta. El objetivo de este estudio es evaluar si existe mayor índice de complicaciones,incluyendo la recurrencia del varicocele, dependiendo de la técnica deoclusión vascular utilizada: clip y sección o sellador vascular, en latécnica de Palomo laparoscópico en nuestro centro.Material y métodos: Estudio longitudinal prospectivo que se realizade 2017 a 2021. Se crean dos grupos terapéuticos según el método deoclusión vascular utilizada durante la varicocelectomía laparoscópica:clip y sección o sellador vascular. Los pacientes son incluidos en ungrupo mediante asignación sistemática consecutiva alternante. Se realizael análisis de las variables: edad, grado de varicocele según la clasifica-ción de Dubin-Amelar, complicaciones postquirúrgicas, seguimiento yrecurrencia del varicocele, según el método empleado.Resultados: Se intervinieron un total de 37 niños, con edad mediade 12 años (10-15 años) y una media de seguimiento de 12 meses. En20 pacientes (54,1%), se utilizó clip y sección, y en los 17 restantes(45,9%), sellador vascular. El 24,3% presentaba varicocele Grado IIsintomático y el 75,7%, Grado III. El 32,4% de los niños presentó algunacomplicación postquirúrgica durante el seguimiento. El 29,7% de lospacientes presentó hidrocele tras la intervención, perteneciendo 8 niñosal grupo de sellado y 3 niños al de clipaje. El 13,5% de estos precisóreintervención por este motivo. Ningún paciente presentó recurrenciadel varicocele. Conclusiones: La técnica de Palomo laparoscópica es una técnicasegura y efectiva que presenta buenos resultados en pacientes pediátricos...(AU)


Introduction: Varicocele is the abnormal dilatation of the pampiniform plexus. It occurs in 15-20% of pre-adolescent/adult males.Varicocele diagnosis is important since it can induce testicular hyper-trophy and fertility issues in adulthood. The objective of this studywas to assess whether complications, including varicocele recurrence,depend on the vascular occlusion technique used –clipping + divisionvs. vascular sealer–in the laparoscopic Palomo technique used inour institution. Materials and methods: A longitudinal, prospective study wascarried out from 2017 to 2021. Two therapeutic groups were createdaccording to the vascular occlusion method used during laparoscopicvaricocelectomy –clipping + division vs. vascular sealer. Patients wererandomly allocated to the groups in a systematic alternating consecutivemanner. Variables –age, varicocele grade according to the Dubin-Amelarclassification, postoperative complications, follow-up, and varicocelerecurrence– were analyzed according to the method employed.Results: A total of 37 boys, with a mean age of 12 years (10-15years) and a mean follow-up of 12 months, were studied. In 20 patients (54.1%), clipping + division was used, and in the remaining 17(45.9%), the vascular sealer was employed. 24.3% had symptomaticGrade II varicocele and 75.7% had Grade III varicocele. 32.4% of thechildren had postoperative complications during follow-up. 29.7% ofthe patients had hydrocele following surgery –8 boys from the seal-ing group and 3 boys from the clipping group–, with 13.5% requiringre-intervention as a result of this. None of the patients had varicocelerecurrence. Conclusions: The laparoscopic Palomo technique is safe and ef-fective, with good results in pediatric patients and few postoperativecomplications, regardless of the vascular occlusion device used...(AU)


Subject(s)
Humans , Male , Female , Child , Varicocele , Dilatation , Minimally Invasive Surgical Procedures , Laparoscopy , Pediatrics , Longitudinal Studies , Prospective Studies
4.
Cir Pediatr ; 37(1): 22-26, 2024 Jan 01.
Article in English, Spanish | MEDLINE | ID: mdl-38180098

ABSTRACT

OBJECTIVE: High-pressure balloon pneumatic dilatation for the treatment of primary obstructive megaureter (POM) was initially described under cystoscopic and radiological control. However, some groups use cystoscopic control only, in an attempt to avoid the ionizing radiation associated with the procedure. MATERIALS AND METHODS: A retrospective study of POM patients treated with pneumatic dilatation in our unit from 2008 to 2021 was carried out. Success rates, complications, and follow-up were compared between two groups -dilatation under cystoscopic control alone (CS) vs. dilatation under radiological control only (RX). RESULTS: 23 patients -9 CS and 14 RX- underwent surgery. Both groups were demographically comparable. Mean hospital stay was significantly shorter in the CS group (1 vs. 2 days; p = 0.009). Operating time was longer in the RX group (78 vs. 30 min; p = 0.001). Ureterovesical junction (UVJ) dilatation was successful in 100% of CS vs. 79% of RX cases; RR: 3.87 (0.51-26.99). Postoperative complications were similar in both groups; RR: 3.87 (0.51-26.99). Double J stent migration occurred in one case in both groups; RR: 0.64 (0.05-9.03). In the long-term, treatment success rate was higher in the CS group (100% vs. 71%); RR: 3.87 (0.51-26.99). CONCLUSION: POM pneumatic dilatation under cystoscopic control alone is faster, without increasing the risk of complications. Based on our experience, we suggest ionizing radiation be removed, since we consider it to be unnecessary.


OBJETIVO: La dilatación neumática con balón de alta presión para el tratamiento del megauréter obstructivo primario (MOP) fue descrita inicialmente bajo control cistoscópico y radioscópico. Sin embargo, algunos grupos utilizan únicamente el control cistoscópico, con la intención de evitar la radiación ionizante asociada al procedimiento. MATERIAL Y METODOS: Estudio retrospectivo que incluye los MOP tratados mediante dilatación neumática en nuestro servicio entre 2008 y 2021. Comparamos tasa de éxito, complicaciones y seguimiento entre dos grupos: dilatación bajo control cistoscópico exclusivo (CS) vs control radioscópico exclusivo (RX). RESULTADOS: Intervenimos 23 pacientes: 9 CS y 14 RX. Ambos grupos fueron demográficamente comparables. La estancia media hospitalaria fue significativamente menor en el grupo CS (1 vs 2 días; p 0,009). El tiempo quirúrgico fue mayor en el grupo RX (78 vs 30 min; p 0,001). La dilatación de la unión vesicoureteral (UVU) fue satisfactoria 100% CS vs 79% RX: RR 3,87 (0,51-26,99). Las complicaciones postoperatorias fueron similares para ambos grupos, RR 3,87 (0,51-26,99). La migración del catéter doble J ocurrió en un caso en ambos grupos: RR 0,64 (0,05-9,03). A largo plazo, la tasa de éxito del tratamiento fue mayor para el grupo CS (100% vS 71%); RR 3,87 (0,51-26,99). CONCLUSION: La dilatación neumática del MOP bajo control cistoscópico exclusivo es más rápida de realizar, sin aumentar por ello el riesgo de complicaciones. Basándonos en nuestra experiencia, proponemos eliminar la radiación ionizante a los pacientes durante el procedimiento, ya que la consideramos innecesaria.


Subject(s)
Endoscopy , Postoperative Complications , Humans , Retrospective Studies , Radiography , Length of Stay , Postoperative Complications/epidemiology
5.
Cir. pediátr ; 37(1): 22-26, Ene. 2024. tab
Article in Spanish | IBECS | ID: ibc-228967

ABSTRACT

Objetivo: La dilatación neumática con balón de alta presión para el tratamiento del megauréter obstructivo primario (MOP) fue descrita inicialmente bajo control cistoscópico y radioscópico. Sin embargo, algunos grupos utilizan únicamente el control cistoscópico, con la intención de evitar la radiación ionizante asociada al procedimiento. Material y métodos: Estudio retrospectivo que incluye los MOP tratados mediante dilatación neumática en nuestro servicio entre 2008 y 2021. Comparamos tasa de éxito, complicaciones y seguimiento entre dos grupos: dilatación bajo control cistoscópico exclusivo (CS) vs control radioscópico exclusivo (RX). Resultados: Intervenimos 23 pacientes: 9 CS y 14 RX. Ambos grupos fueron demográficamente comparables. La estancia media hospitalaria fue significativamente menor en el grupo CS (1 vs 2 días; p0,009). El tiempo quirúrgico fue mayor en el grupo RX (78 vs 30 min; p0,001). La dilatación de la unión vesicoureteral (UVU) fue satisfactoria 100% CS vs 79% RX: RR 3,87 (0,51-26,99). Las complicaciones postoperatorias fueron similares para ambos grupos, RR 3,87 (0,51-26,99). La migración del catéter doble J ocurrió en un caso en ambos grupos: RR 0,64 (0,05-9,03). A largo plazo, la tasa de éxito del tratamiento fue mayor para el grupo CS (100% vS 71%); RR 3,87 (0,51-26,99). Conclusión: La dilatación neumática del MOP bajo control cistoscópico exclusivo es más rápida de realizar, sin aumentar por ello el riesgo de complicaciones. Basándonos en nuestra experiencia, proponemos eliminar la radiación ionizante a los pacientes durante el procedimiento, ya que la consideramos innecesaria.(AU)


Objective: High-pressure balloon pneumatic dilatation for the treatment of primary obstructive megaureter (POM) was initially described under cystoscopic and radiological control. However, some groups use cystoscopic control only, in an attempt to avoid the ionizing radiation associated with the procedure. Materials and methods: A retrospective study of POM patients treated with pneumatic dilatation in our unit from 2008 to 2021 was carried out. Success rates, complications, and follow-up were compared between two groups –dilatation under cystoscopic control alone (CS) vs. dilatation under radiological control only (RX). Results: 23 patients –9 CS and 14 RX– underwent surgery. Both groups were demographically comparable. Mean hospital stay was significantly shorter in the CS group (1 vs. 2 days; p = 0.009). Operating time was longer in the RX group (78 vs. 30 min; p = 0.001). Ureterovesical junction (UVJ) dilatation was successful in 100% of CS vs. 79% of RX cases; RR: 3.87 (0.51-26.99). Postoperative complications were similar in both groups; RR: 3.87 (0.51-26.99). Double J stent migration occurred in one case in both groups; RR: 0.64 (0.05-9.03). In the long-term, treatment success rate was higher in the CS group (100% vs. 71%); RR: 3.87 (0.51-26.99). Conclusion: POM pneumatic dilatation under cystoscopic control alone is faster, without increasing the risk of complications. Based on our experience, we suggest ionizing radiation be removed, since we consider it to be unnecessary.(AU)


Subject(s)
Humans , Male , Female , Child , Endoscopy/methods , Cystoscopy , Dilatation , Urethra , Hydronephrosis , Postoperative Complications , General Surgery , Retrospective Studies , Pediatrics
6.
Sci Total Environ ; 912: 169133, 2024 Feb 20.
Article in English | MEDLINE | ID: mdl-38070551

ABSTRACT

Downed woody debris (DWD) plays an important role as regulator of nutrient and carbon (C) cycling in forests, accounting for up to the 20 % of the total C stocks in primary forests. DWD persistence is highly influenced by microbial decomposition, which is determined by various environmental factors, including fluctuations in temperature and moisture, as well as in intrinsic DWD properties determined by species, diameter, or decay classes (DCs). The relative importance of these different drivers, as well as their interactions, remains largely unknown. Moreover, the importance of DWD for C cycling in virgin forests remains poorly understood, due to their scarcity and poor accessibility. To address this research gap, we conducted a study on DWD respiration (RDWD), in a temperate virgin forest dominated by European beech and silver fir. Our investigation analysed the correlation between RDWD of these two dominant tree species and the seasonal changes in climate (temperature and moisture), considering other intrinsic DWD traits such as DCs (1, 2 and 4) and diameters (1, 10 and 25 cm). As anticipated, RDWD (normalized per gram of dry DWD) increased with air temperature. Surprisingly, DWD diameter also had a strong positive correlation with RDWD. Nonetheless, the sensitivity to both variables and other intrinsic traits (DC and density) was greatly modulated by the species. On the contrary, water content, which exhibited a considerable spatial variation, had an overall negative effect on RDWD. Virgin forests are generally seen as ineffective C sinks due to their lack of net productivity and high respiration and nutrient turnover. However, the rates of RDWD in this virgin forest were significantly lower than those previously estimated for managed forests. This suggests that DWD in virgin forests may be buffering forest CO2 emissions to the atmosphere more than previously thought.


Subject(s)
Carbon , Microclimate , Forests , Wood , Trees
8.
Rev. Asoc. Odontol. Argent ; 111(2): 1110881, mayo-ago. 2023.
Article in Spanish | LILACS | ID: biblio-1537446

ABSTRACT

La Sociedad Argentina de Periodoncia ha formulado un Comentario, analizando los condicionantes del contexto na- cional, para determinar si las recomendaciones generadas en la Guía de Práctica Clínica de nivel S3 de la Federación Eu- ropea de Periodoncia para el tratamiento de la periodontitis en estadios I-III, podrían ser aplicadas para dar respuesta a la demanda de la población, en lo referido a la salud periodontal (AU)


The Argentine Society of Periodontics has formulated a Commentary, analyzing the determining factors of the nation- al context, to determine if the recommendations generated in the Level S3 Clinical Practice Guideline of the European Fed- eration of Periodontics for the treatment of periodontitis in stages I-III could be applied to respond to the demand of the population, regarding periodontal health (AU)


Subject(s)
Periodontitis/classification , Periodontitis/therapy , Societies, Dental/standards , Professional Review Organizations/standards
9.
Rev. Asoc. Odontol. Argent ; 111(2): 881-881, jul. 2023.
Article in Spanish | LILACS-Express | LILACS | ID: biblio-1535077

ABSTRACT

Resumen La Sociedad Argentina de Periodoncia ha formulado un Comentario, analizando los condicionantes del contexto nacional, para determinar si las recomendaciones generadas en la Guía de Práctica Clínica de nivel S3 de la Federación Europea de Periodoncia para el tratamiento de la periodontitis en estadios I-III, podrían ser aplicadas para dar respuesta a la demanda de la población, en lo referido a la salud periodontal.


Abstract The Argentine Society of Periodontics has formulated a Commentary, analyzing the determining factors of the national context, to determine if the recommendations generated in the Level S3 Clinical Practice Guideline of the European Federation of Periodontics for the treatment of periodontitis in stages I-III could be applied to respond to the demand of the population, regarding periodontal health.

10.
Cir Pediatr ; 36(1): 17-21, 2023 Jan 01.
Article in English, Spanish | MEDLINE | ID: mdl-36629344

ABSTRACT

INTRODUCTION: Major Outpatient Surgery (MOS) is an organizational and management model for surgical care that allows selected patients to be treated efficiently and safely. Our objective was to evaluate the quality of the different activities through standardized quality indicators, analyzing whether they have been modified during the COVID-19 pandemic. MATERIALS AND METHODS: An observational and comparative descriptive study of the quality indicators (QI) of MOS in our Pediatric Surgery Department from 2019 to 2020 was carried out. In accordance with the International Association for Ambulatory Surgery (IAAS) and the recommendations of the Spanish Ministry of Health and Consumer Affairs, we assessed the basic quality and the degree of family satisfaction of patients undergoing MOS. RESULTS: A total of 848 and 652 interventions were performed in 2019 and 2020, respectively, with a mean age of 6 and 7 years. 539 (ambulatory rate (AR) 63.6%) and 465 (AR 71.3%) MOS surgeries were conducted in 2019 and 2020. In 2019, the overall substitution rate (SR) was 96.8%, hospitalization rate (HR) was 1.67%, suspension rate was 5.94%, and readmission rate was 1.48%. In 2020, the overall IS was 98.3%, HR was 0.86%, suspension rate was 4.73%, and readmission rate was 1.72%. No differences were found in terms of satisfaction between 2020 and 2019. CONCLUSIONS: QI allow us to know and analyze the performance and results of the different management units. In our department, the COVID-19 pandemic has not reduced the quality of CMA care.


INTRODUCCION: La cirugía mayor ambulatoria (CMA) es un modelo de gestión de asistencia quirúrgica que permite tratar de forma eficiente y segura a pacientes seleccionados. Nuestro objetivo es evaluar la calidad de esta actividad a través de indicadores de calidad estandarizados, analizando si se han visto modificados durante la pandemia por COVID-19. MATERIAL Y METODOS: Estudio descriptivo observacional y comparativo entre 2019 y 2020 de los indicadores de calidad (IC) de CMA de nuestra unidad de Cirugía Pediátrica. De acuerdo con la International Association for Ambulatory Surgery (IAAS) y las recomendaciones del Ministerio de Sanidad y Consumo, valoramos los indicadores de calidad básicos para CMA, así como el grado de satisfacción de las familias de pacientes intervenidos en este régimen. RESULTADOS: En total 848 y 652 intervenciones realizadas en 2019 y 2020, respectivamente, con edad media de 6 y 7 años. 539 (índice de ambulatorización (IA) 63,6%) y 465 (IA 71,3%) cirugías en régimen de CMA en 2019 y 2020. En 2019, índice de sustitución (IS) global 96,8%, índice de hospitalización (IH) 1,67%, índice de suspensión 5,94% e índice de reingreso 1,48%. En el año 2020, IS global 98,3%, IH 0,86%, índice de suspensión 4,73% e índice de reingreso 1,72%. No hemos encontrado diferencias en el grado de satisfacción entre ambos años. CONCLUSIONES: Los IC permiten conocer y analizar el funcionamiento y los resultados de las distintas unidades de gestión. En nuestra Unidad, la pandemia por COVID-19 no ha reducido la calidad de la asistencia en régimen de CMA.


Subject(s)
Ambulatory Surgical Procedures , COVID-19 , Humans , Child , Quality Indicators, Health Care , Pandemics , Hospitalization
11.
Cir. pediátr ; 36(1): 17-21, Ene. 2023. tab
Article in Spanish | IBECS | ID: ibc-214575

ABSTRACT

Introducción. La cirugía mayor ambulatoria (CMA) es un modelo de gestión de asistencia quirúrgica que permite tratar de forma eficiente y segura a pacientes seleccionados. Nuestro objetivo es evaluar la calidad de esta actividad a través de indicadores de calidad estandarizados, analizando si se han visto modificados durante la pandemia por COVID-19. Material y métodos. Estudio descriptivo observacional y comparativo entre 2019 y 2020 de los indicadores de calidad (IC) de CMA de nuestra unidad de Cirugía Pediátrica. De acuerdo con la International Association for Ambulatory Surgery (IAAS) y las recomendaciones del Ministerio de Sanidad y Consumo, valoramos los indicadores de calidad básicos para CMA, así como el grado de satisfacción de las familias depacientes intervenidos en este régimen. Resultados. En total 848 y 652 intervenciones realizadas en 2019 y 2020, respectivamente, con edad media de 6 y 7 años. 539 (índice de ambulatorización (IA) 63,6%) y 465 (IA 71,3%) cirugías en régimen de CMA en 2019 y 2020. En 2019, índice de sustitución (IS) global 96,8%, índice de hospitalización (IH) 1,67%, índice de suspensión 5,94% e índice de reingreso 1,48%. En el año 2020, IS global 98,3%, IH 0,86%, índice de suspensión 4,73% e índice de reingreso 1,72%. No hemos encontrado diferencias en el grado de satisfacción entre ambos años. Conclusiones. Los IC permiten conocer y analizar el funcionamiento y los resultados de las distintas unidades de gestión. En nuestra Unidad, la pandemia por COVID-19 no ha reducido la calidad de la asistencia en régimen de CMA.(AU)


Introduction: ajor Outpatient Surgery (MOS) is an organizational and management model for surgical care that allows selected patients to be treated efficiently and safely. Our objective was to evaluate the quality of the different activities through standardized quality indicators, analyzing whether they have been modified during the COVID-19 pandemic. Materials and methods: An observational and comparative descriptive study of the quality indicators (QI) of MOS in our Pediatric Surgery Department from 2019 to 2020 was carried out. In accordance with the International Association for Ambulatory Surgery (IAAS) and the recommendations of the Spanish Ministry of Health and Consumer Affairs, we assessed the basic quality and the degree of family satisfaction of patients undergoing MOS. Results: A total of 848 and 652 interventions were performed in 2019 and 2020, respectively, with a mean age of 6 and 7 years. 539 (ambulatory rate (AR) 63.6%) and 465 (AR 71.3%) MOS surgeries were conducted in 2019 and 2020. In 2019, the overall substitution rate (SR) was 96.8%, hospitalization rate (HR) was 1.67%, suspension rate was 5.94%, and readmission rate was 1.48%. In 2020, the overall IS was 98.3%, HR was 0.86%, suspension rate was 4.73%, and readmission rate was 1.72%. No differences were found in terms of satisfaction between 2020 and 2019. Conclusions: QI allow us to know and analyze the performance and results of the different management units. In our department, the COVID-19 pandemic has not reduced the quality of CMA care.(AU)


Subject(s)
Humans , Male , Female , Child , Quality Indicators, Health Care , Pandemics , Coronavirus Infections/epidemiology , Ambulatory Surgical Procedures , Pediatrics , General Surgery
12.
Cir Pediatr ; 35(4): 172-179, 2022 Oct 01.
Article in English, Spanish | MEDLINE | ID: mdl-36217787

ABSTRACT

INTRODUCTION: Congenital nephrourological abnormalities (CAKUT) are a particularly relevant group of diseases due to their high prevalence and the fact they are the main cause of chronic renal disease (CRD) in the pediatric population. Our objective was to determine the characteristics and prevalence of CAKUT in our setting, while identifying the factors associated with the occurrence of renal damage. MATERIALS AND METHODS: A retrospective, descriptive, analytical, cross-sectional study of patients seen in the Pediatric Nephrology Department of a third-level hospital from January 1 to December 31, 2018 was carried out. Epidemiological, clinical, and analytical variables were assessed, and potential risk factors associated with CRD were searched for. RESULTS: The study involved 685 patients with 827 kidney units affected by CAKUT with a mean age of 9.98 ± 5.12 years. 62.2% were male, and the mean follow-up period after diagnosis was 9.95 ± 5.09 years. 58.8% were non-obstructive dilations, followed by renal dysplasia, obstructive dilations, and number and position abnormalities. The most frequent malformation was vesicoureteral reflux (VUR). The most commonly affected side was the left (47.5%). 55% of the diagnoses were prenatal. 172 patients underwent surgery. The initially chosen treatment for VUR was endourological. Overall re-intervention rate was 20%. Of the total number of patients, glomerular filtration rate was analyzed in 383, 95 (24.8%) of whom had CRD (86% in stage 2). Male sex, bilaterality, and proteinuria were risk factors associated with CRD. CONCLUSIONS: Knowledge of the epidemiological and clinical characteristics of children with CAKUT and the factors associated with CRD helps to individualize the clinical follow-up of these patients, thus customizing diagnostic tests and healthcare resources.


INTRODUCCION: Las anomalías nefrourológicas congénitas (CAKUT), constituyen un grupo de enfermedades de gran relevancia por su alta prevalencia y por ser la principal causa de enfermedad renal crónica (ERC) en la población pediátrica. Nuestro objetivo es conocer las características y la prevalencia de CAKUT en nuestro medio, identificando los factores asociados a la aparición de daño renal. MATERIAL Y METODOS: Estudio retrospectivo, descriptivo, analítico y transversal, que incluyó los pacientes atendidos en la consulta de Nefrología Pediátrica de un hospital de tercer nivel desde el 1 de enero al 31 de diciembre de 2018. Se analizaron variables epidemiológicas, clínicas y analíticas, y se buscaron posibles factores de riesgo asociados a ERC. RESULTADOS: Se incluyeron 685 pacientes con 827 unidades renales con CAKUT con una edad media de 9,98 ± 5,12 años. El 62,2% fueron varones y el seguimiento medio desde el diagnóstico fue de 9,95 ± 5,09 años. El 58,8% fueron dilataciones no obstructivas, seguido por displasia renal, dilataciones obstructivas y anomalías de número y posición. La malformación más frecuente fue el reflujo vesicoureteral (RVU). El lado más afectado fue el izquierdo (47,5%). El 55% de los diagnósticos fueron prenatales. Fueron intervenidos 172 pacientes. El tratamiento inicial de elección en el RVU fue endourológico. La tasa de reintervención global alcanzó el 20%. Del total de pacientes, se pudo analizar el filtrado glomerular en 383 pacientes, de los cuales 95 (24,8%) tenían ERC (86% en estadio 2). El sexo masculino, la bilateralidad y la proteinuria fueron factores de riesgo asociados a la ERC. CONCLUSIONES: El conocimiento de las características epidemiológicas y clínicas de los niños con CAKUT y de los factores asociados a la ERC ayuda a individualizar el seguimiento clínico de estos pacientes adecuando las pruebas diagnósticas y los recursos sanitarios.


Subject(s)
Kidney Failure, Chronic , Renal Insufficiency, Chronic , Urinary Tract , Vesico-Ureteral Reflux , Adolescent , Child , Child, Preschool , Cross-Sectional Studies , Female , Humans , Kidney/abnormalities , Male , Pregnancy , Renal Insufficiency, Chronic/epidemiology , Retrospective Studies , Urinary Tract/abnormalities , Urogenital Abnormalities , Vesico-Ureteral Reflux/complications , Vesico-Ureteral Reflux/diagnosis , Vesico-Ureteral Reflux/epidemiology
13.
Cir. pediátr ; 35(4): 172-179, Oct. 2022. tab, graf
Article in Spanish | IBECS | ID: ibc-210859

ABSTRACT

Introducción: Las anomalías nefrourológicas congénitas (CAKUT),constituyen un grupo de enfermedades de gran relevancia por su altaprevalencia y por ser la principal causa de enfermedad renal crónica(ERC) en la población pediátrica. Nuestro objetivo es conocer las ca-racterísticas y la prevalencia de CAKUT en nuestro medio, identificandolos factores asociados a la aparición de daño renal. Material y métodos: Estudio retrospectivo, descriptivo, analíticoy transversal, que incluyó los pacientes atendidos en la consulta deNefrología Pediátrica de un hospital de tercer nivel desde el 1 de eneroal 31 de diciembre de 2018. Se analizaron variables epidemiológicas,clínicas y analíticas, y se buscaron posibles factores de riesgo aso-ciados a ERC.Resultados: Se incluyeron 685 pacientes con 827 unidades rena-les con CAKUT con una edad media de 9,98 ± 5,12 años. El 62,2%fueron varones y el seguimiento medio desde el diagnóstico fue de9,95 ± 5,09 años. El 58,8% fueron dilataciones no obstructivas, se-guido por displasia renal, dilataciones obstructivas y anomalías denúmero y posición. La malformación más frecuente fue el reflujovesicoureteral (RVU). El lado más afectado fue el izquierdo (47,5%).El 55% de los diagnósticos fueron prenatales. Fueron intervenidos172 pacientes. El tratamiento inicial de elección en el RVU fue en-dourológico. La tasa de reintervención global alcanzó el 20%. Deltotal de pacientes, se pudo analizar el filtrado glomerular en 383pacientes, de los cuales 95 (24,8%) tenían ERC (86% en estadio 2).El sexo masculino, la bilateralidad y la proteinuria fueron factoresde riesgo asociados a la ERC. Conclusiones: El conocimiento de las características epidemioló-gicas y clínicas de los niños con CAKUT y de los factores asociados ala ERC ayuda a individualizar el seguimiento clínico de estos pacientesadecuando las pruebas diagnósticas y los recursos sanitarios.(AU)


Introduction: Congenital nephrourological abnormalities (CAKUT)are a particularly relevant group of diseases due to their high prevalenceand the fact they are the main cause of chronic renal disease (CRD) in thepediatric population. Our objective was to determine the characteristicsand prevalence of CAKUT in our setting, while identifying the factorsassociated with the occurrence of renal damage. Materials and methods: A retrospective, descriptive, analytical, cross-sectional study of patients seen in the Pediatric NephrologyDepartment of a third-level hospital from January 1 to December 31,2018 was carried out. Epidemiological, clinical, and analytical variables were assessed, and potential risk factors associated with CRDwere searched for.Results: The study involved 685 patients with 827 kidney unitsaffected by CAKUT with a mean age of 9.98 ± 5.12 years. 62.2% weremale, and the mean follow-up period after diagnosis was 9.95 ± 5.09years. 58.8% were non-obstructive dilations, followed by renal dysplasia,obstructive dilations, and number and position abnormalities. The mostfrequent malformation was vesicoureteral reflux (VUR). The most commonly affected side was the left (47.5%). 55% of the diagnoses wereprenatal. 172 patients underwent surgery. The initially chosen treatmentfor VUR was endourological. Overall re-intervention rate was 20%. Ofthe total number of patients, glomerular filtration rate was analyzed in383, 95 (24.8%) of whom had CRD (86% in stage 2). Male sex, bilateral ity, and proteinuria were risk factors associated with CRD. Conclusions: Knowledge of the epidemiological and clinical characteristics of children with CAKUT and the factors associated withCRD helps to individualize the clinical follow-up of these patients, thuscustomizing diagnostic tests and healthcare resources.(AU)


Subject(s)
Humans , Child , Urinary Tract , Congenital Abnormalities , Renal Insufficiency, Chronic , Kidney/abnormalities , Vesico-Ureteral Reflux , Glomerular Filtration Rate , Pediatrics , Child Health , General Surgery , Retrospective Studies , Epidemiology, Descriptive , Cross-Sectional Studies
14.
Cir. Esp. (Ed. impr.) ; 100(9): 573-579, sept. 2022. tab, graf, ilus
Article in English | IBECS | ID: ibc-208259

ABSTRACT

Introduction Despite its toxic and carcinogenic nature, formaldehyde is a widely used reactant for specimen preservation. With the need of specimens for both anatomical and surgical training, alternative preservation solutions (PS) have been proposed, however, their use is limited due to high costs and complexity. Hence, a new formaldehyde-free solution (FFS) is evaluated as a potential alternative for anatomical and surgical training. Methods Qualitative and Quantitative data were acquired. Specimens preserved using three different methods were selected. Flexibility was measured by joints goniometry and pneumoperitoneum pressures were evaluated followed by an exploratory laparoscopy. Undergraduate student's perceptions on cadavers preserved with different PS were obtained using surveys and focus groups. Results The main reason why cadaveric specimens were considered as useful tools was the perceived interaction with real tissues and the ‘practical’ concept of getting in touch with what students would be facing in the future as physicians, what we call “hands on” activities. FFS treated specimens showed better joint-movement ranges in comparison to other methods and pneumoperitoneum was acquired after 5mmHg CO2 pressure. Students appreciated working with corpses regardless the technique used, however FFS specimens were defined as less uncomfortable, while presenting no sensory discomfort. Conclusions Even though alternative PS are effective, high costs and complexity restrict their usage. Cadavers preserved with FFS had similar range of movements compared with Thiel. Students preferred to work with FFS rather than FF due to flexibility, color, and no sensorial hassles. Thus, we propose FFS as viable alternative to traditional PS (AU)


Introducción A pesar de su naturaleza carcinogénica y tóxica, el formaldehido continúa siendo utilizado para preservar especímenes. Debido a la necesidad de especímenes para entrenamiento anatómico y quirúrgico, se han propuesto soluciones preservadoras (SP) alternativas; sin embargo, su uso es limitado debido a los altos costos y a su complejidad. En consecuencia, se evalúa una nueva solución libre de formol (FFS) como una alternativa para el uso en entrenamiento anatómico y quirúrgico. Métodos Se obtuvieron datos cualitativos y cuantitativos. Se seleccionaron especímenes preservados utilizando diferentes métodos y se analizaron biopsias de cada uno. Se midió la flexibilidad mediante goniometría, y se evaluó la presión del neumoperitoneo. Utilizando encuestas y grupos focales se obtuvo la percepción de estudiantes de pregrado respecto a cadáveres preservados con diferentes soluciones. Resultados Los principales motivos por los que los estudiantes refirieron percibir los cadáveres como herramientas útiles fueron poder interactuar con tejidos reales y el concepto de «practicidad» generado por actividades percibidas como similares a la práctica como médicos profesionales. Los especímenes tratados con FFS demostraron mejor movimiento articular en comparación con otras soluciones, además de lograr neumoperitoneo con 5mmHg de CO2. Los estudiantes refirieron sentir menos molestias sensoriales al utilizar cadáveres preservados con FFS. Conclusiones Aunque otras SP son efectivas, los altos costos y la complejidad restringen su uso. Cadáveres preservados con FFS presentan arcos de movimiento similares a Thiel. Los estudiantes prefirieron trabajar con FFS en vez de FF, debido a la flexibilidad, el color y la ausencia de molestias sensoriales. Proponemos FFS como una alternativa viable a las SP tradicionales (AU)


Subject(s)
Humans , Cadaver , Education, Medical/methods , Formaldehyde , Preservation, Biological/methods , Anatomy/education
15.
Arch. prev. riesgos labor. (Ed. impr.) ; 25(3): 259-270, jul. 15 2022. tab, ilus
Article in Spanish | IBECS | ID: ibc-209111

ABSTRACT

ResumenIntroducción: Diseñar y validar una escala de percepción acerca del teletrabajo en docentes de educación básica peruanos.Método: Estudio transversal, con 400 docentes de educación básica (61,50% mujeres) en-tre 21 y 61 años, de 6 ciudades del sur de Perú. Se propusieron 8 ítems que obedecen a los conceptos de capacitación, seguridad, flexibilidad de los horarios a partir de aspectos teóri-cos hallados en la literatura científica. La escala fue validada por 7 expertos que evaluaron relevancia, representatividad y claridad de los ítems. Posteriormente se aplicó el análisis factorial exploratorio (AFE) y el análisis factorial confirmatorio (AFC), mediante el programa FACTOR Analysis y el SPSS AMOS versión 21.Resultados: Los indicadores V de Aiken fueron estadísticamente significativos para los 8 ítems. Previa ejecución del AFE se calculó el coeficiente KMO (0,93) y el test de Bartlett (1832,90; gl = 28; p = 0,00). Se evidenció la existencia de un solo factor que explica el 62,27 % de la varianza total de la escala y sus cargas factoriales oscilan entre 0,65 y 0,84. El AFC corroboró la estructura interna de la escala (χ2 = 58,24, df = 20, p < 0,01; RMR = 0,03; TLI = 0,97; CFI = 0,97; y RMSEA = 0,06) y la confiabilidad fue aceptable (α = 0,93; IC 95% = 0,89 – 0,92).Conclusiones: La escalamuestra evidencias de validez basada en el contenido, estructura interna y fiabilidad (AU)


AbstractIntroduction: To design and validate a scale of perception of teleworking in Peruvian prima-ry schoolteachers.Method: This was a cross-sectional study of 400 primary schoolteachers (61.5% women) between 21 and 61 years of age, from six cities in Peru. Eight items were proposed, cor-responding to indicators of training, safety, and flexibility of schedules, derived from the scientific literature. The scale was validated by seven experts who evaluated the relevance, representativeness and clarity of the items. Subsequently, we applied exploratory f (EFA) and confirmatory factor analysis (CFA), using the FACTOR Analysis program and SPSS AMOS version 21.Results: The Aiken V indicators were statistically significant for the eight items. Before run-ning the AFE, we calculated the KMO coefficient (0.93) and Bartlett’s test (1832.9; gl = 28; p = 0.00). A single factor explained 62.27% of the total variance of the scale and its factor loadings ranged from 0.65 to 0.84. The CFA corroborated the internal structure of the scale (χ2 = 58.24, df = 20, p < 0.01; RMR = 0.03; TLI = 0.97; CFI = 0.97; and RMSEA = 0.06) and the reliability was acceptable (α = 0.93; 95% CI = 0.89 – 0.92).Conclusions: The scale demonstrates evidence of content-based validity, internal structure and reliability (AU)


Subject(s)
Humans , Male , Female , Young Adult , Adult , Middle Aged , Education, Distance , School Teachers/statistics & numerical data , Education, Primary and Secondary , Peru
16.
Cir Pediatr ; 35(1): 18-24, 2022 Jan 01.
Article in English, Spanish | MEDLINE | ID: mdl-35037436

ABSTRACT

INTRODUCTION: In pediatrics, there are few standard criteria to classify and consolidate postoperative complications, particularly in appendectomy, where according to the literature, complications range from 5% to 30%. METHODS: A cross-sectional, observational, retrospective study of patients undergoing surgery as a result of suspected acute appendicitis (AA) from December 2018 to January 2020 was carried out. Complications were grouped and consolidated according to the Clavien-Dindo (CD) classification. Postoperative complications and factors involved were analyzed by conducting a bivariate and multivariate statistical study using SPSS statistical software, version 25. RESULTS: A total of 124 patients were studied. Mean age was 9 years (3-14 years). 62% were boys, and 38% were girls. All patients underwent appendectomy - 80.6% through laparotomy, and 19.4% through laparoscopy. 20% of patients had postoperative complications, which were grouped according to the CD classification (p = 0.002). Most complications were included in the CD I group (64%). Collections treated with antibiotic therapy were included in the CD II group (28%). Intra-abdominal collections requiring re-intervention for drainage purposes were included in the CD IIIb group (8%). The main factors driving complications were complicated AA (81% gangrenous and perforated) (p < 0.001) and progression time (80% > 24 h of progression) (p = 0.036), which increased mean hospital stay by 7 ± 4 days (p = 0.016). 137 ± 37 CRP levels were associated with plastron identification (p < 0.001), whereas 109 ± 19 CRP levels were associated with peritonitis (p < 0.001). CONCLUSIONS: The Clavien-Dindo classification allows post-appendectomy complications in pediatric surgery to be classified using a common language, by associating complication grade with treatment complexity.


INTRODUCCION: En pediatría hay pocos criterios estándares para clasificar y unificar las complicaciones postquirúrgicas y en particular en la apendicectomía, donde, según la literatura, las complicaciones varían de un 5-30%. METODOS: Realizamos un estudio retrospectivo, observacional tipo transversal de los pacientes intervenidos por sospecha de apendicitis aguda (AA) durante diciembre 2018 a enero 2020. Las complicaciones fueron agrupadas y unificadas según la clasificación de Clavien-Dindo (CD). Se analizan las complicaciones postoperatorias y factores implicados, aplicando estudio estadístico bivariante y multivariante según el programa estadístico SPSS versión 25. RESULTADOS: Un total de 124 pacientes incluidos. Edad media 9 años (3-14 años). 62% niños, 38% niñas. A todos se les realizó apendicectomía, el 80,6% apendicectomía abierta, 19,4% por laparoscopia. El 20% presentó algún tipo de complicación en el postoperatorio y fueron agrupadas según la clasificación de CD (p = 0,002). En CD I (64%) se incluyen la mayoría de las complicaciones, En el grupo CD II (28%) colecciones tratadas con antibioticoterapia. En el grupo CD IIIb (8%), colección intraabdominal que requirió reintervención para su drenaje. Los principales factores implicados en la aparición de complicaciones fueron: AA complicadas (81% gangrenosas y perforadas) (p < 0,001), tiempo de evolución (80% > 24 h de evolución) (p = 0,036) que incrementó la estancia media 7 ± 4 días (p = 0,016). El valor de proteína C reactiva (PCR) (137 ± 37) se relacionó con la identificación de plastrón (p < 0,001), y el valor de PCR (109 ± 19) con peritonitis (p < 0,001). CONCLUSIONES: La clasificación de Clavien-Dindo permite utilizar un lenguaje común para clasificar las complicaciones postapendicectomía en cirugía pediátrica, expresando el grado de estas según complejidad del tratamiento utilizado para su resolución.


Subject(s)
Appendicitis , Laparoscopy , Appendectomy/adverse effects , Appendicitis/surgery , Child , Cross-Sectional Studies , Female , Humans , Length of Stay , Male , Postoperative Complications/epidemiology , Postoperative Complications/etiology , Retrospective Studies
17.
Cir. pediátr ; 35(1): 1-7, Enero, 2022. tab, graf
Article in Spanish | IBECS | ID: ibc-203584

ABSTRACT

Introducción: En pediatría hay pocos criterios estándares para clasificar y unificar las complicaciones postquirúrgicas y en particular en la apendicectomía, donde, según la literatura, las complicaciones varían de un 5-30%.Métodos: Realizamos un estudio retrospectivo, observacional tipo transversal de los pacientes intervenidos por sospecha de apendicitis aguda (AA) durante diciembre de 2018 a enero de 2020. Las complicaciones fueron agrupadas y unificadas según la clasificación de Clavien-Dindo (CD). Se analizan las complicaciones postoperatorias y factores impli- cados, aplicando estudio estadístico bivariante y multivariante según el programa estadístico SPSS versión 25.Resultados: Un total de 124 pacientes incluidos. Edad media, 9 años (3-14 años). 62% niños, 38% niñas. A todos se les realizó apendicectomía, el 80,6% apendicectomía abierta, 19,4% por laparoscopia. El 20% presentó algún tipo de complicación en el postoperatorio y fueron agrupadas según la clasificación de CD (p = 0,002). En CD I (64%) se incluyen la mayoría de las complicaciones. En el grupo CD II (28%) colecciones tratadas con antibioticoterapia. En el grupo CD IIIb (8%), colección intraabdominal que requirió reintervención para su drenaje.Los principales factores implicados en la aparición de complicaciones fueron: AA complicadas (81% gangrenosas y perforadas) (p < 0,001), tiempo de evolución (80% >24 h de evolución) (p = 0,036) que incrementó la estancia media 7 ± 4 días (p = 0,016). El valor de proteína C reactiva (PCR) (137 ± 37) se relacionó con la identificación de plastrón (p < 0,001), y el valor de PCR (109 ± 19) con peritonitis (p < 0,001). Conclusiones: La clasificación de Clavien-Dindo permite utilizar un lenguaje común para clasificar las complicaciones postapendicectomía en cirugía pediátrica, expresando el grado de estas según complejidad del tratamiento utilizado para su resolución.


Introduction: In pediatrics, there are few standard criteria to classify and consolidate postoperative complications, particularly in appendectomy, where according to the literature, complications range from 5% to 30%. Methods. A cross-sectional, observational, retrospective study of patients undergoing surgery as a result of suspected acute appendicitis (AA) from December 2018 to January 2020 was carried out. Complications were grouped and consolidated according to the Clavien-Dindo (CD) classification. Postoperative complications and factors involved were analyzed by conducting a bivariate and multivariate statistical study using SPSS statistical software, version 25.Results: A total of 124 patients were studied. Mean age was 9 years (3-14 years). 62% were boys, and 38% were girls. All patients underwent appendectomy – 80.6% through laparotomy, and 19.4% through laparoscopy. 20% of patients had postoperative complications, which were grouped according to the CD classification (p = 0.002). Most complications were included in the CD I group (64%). Collections treated with antibiotic therapy were included in the CD II group (28%). Intraabdominal collections requiring reintervention for drainage purposes were included in the CD IIIb group (8%). The main factors driving complications were complicated AA (81% gangrenous and perforated) (p < 0.001) and progression time (80% >24 h of progression) (p = 0.036), which increased mean hospital stay by 7 ± 4 days (p = 0.016). 137 ±37 CRP levels were associated with plastron identification (p < 0.001), whereas 109 ± 19 CRP levels were associated with peritonitis (p < 0.001).Conclusions: The Clavien-Dindo classification allows post-appendec tomy complications in pediatric surgery to be classified using a common language, by associating complication grade with treatment complexity.


Subject(s)
Humans , Child , Appendicitis/surgery , Appendectomy/adverse effects , Laparoscopy , Postoperative Complications/epidemiology , Postoperative Complications/etiology , Cross-Sectional Studies , Pediatrics , Child , Retrospective Studies
18.
West Indian med. j ; 69(1): 44-50, 2021. tab
Article in English | LILACS | ID: biblio-1341864

ABSTRACT

ABSTRACT Objective: Vascular calcification contributes to cardiovascular disease on dialysis patients. Arterial mineral content is modified but not well defined. We aim to define what is the concentration of calcium, magnesium and phosphorus in the epigastric artery of adult dialysis patients undergoing renal transplantation. Methods: All renal allograft recipients who underwent surgery at our centre between May 2003 and December 2005 and consented to be taken small samples of epigastric artery were included in our cross-sectional study. Histological, radiological and spectrometric methods were used to measure vascular calcification, deposits and concentrations of calcium, phosphorus and magnesium in epigastric artery, which were correlated with clinical and biochemical characteristics. Mineral vascular content was compared with corresponding samples from cadaveric renal donors free from renal disease (control group). Results: Calcium and magnesium concentrations in epigastric artery were much higher in recipients (n = 100) than in donors (n = 30). Histologically confirmed calcifications were more frequent in recipients. Calcium and magnesium content in epigastric artery were correlated directly with recipient age, pre-transplant serum P and Ca × P product. A high content of calcium and magnesium in this artery was observed in recipients with media and intimal calcification. Multivariate logistic regression showed that dialysis vintage > 3.5 years and calcium concentration in epigastric artery ≥ 4500 mg/kg wet weight were independent predictors of histological calcification. Conclusion: Excess mineral deposition is observed in the epigastric artery of dialysis patients, where the recipient's age, serum P, Ca × P product and time on dialysis play a decisive role.


Subject(s)
Humans , Adult , Middle Aged , Phosphorus/analysis , Calcium/analysis , Renal Dialysis , Kidney Transplantation , Epigastric Arteries/chemistry , Magnesium/analysis
19.
J Biomed Mater Res B Appl Biomater ; 109(10): 1588-1600, 2021 10.
Article in English | MEDLINE | ID: mdl-33622023

ABSTRACT

Peri-implant diseases are one of the main causes of dental implant failure. New strategies for dental implants manufacturing have been developed to prevent the accumulation of bacteria and related inflammatory reactions. The main aim of this work was to develop laser-treated titanium surfaces covered with silver that generate a electrical dipole to inhibit the oral bacteria accumulation. Two approaches were developed for that purpose. In one approach a pattern of different titanium dioxide thickness was produced on the titanium surface, using a Q-Switched Nd:YAG laser system operating at 1064 nm. The second approach was to incorporate silver particles on a laser textured titanium surface. The incorporation of the silver was performed by laser sintering and hot-pressing approaches. The anti-biofilm effect of the discs were tested against biofilms involving 14 different bacterial strains growth for 24 and 72 hr. The morphological aspects of the surfaces were evaluated by optical and field emission guns scanning electronical microscopy (FEGSEM) and therefore the wettability and roughness were also assessed. Physicochemical analyses revealed that the test surfaces were hydrophilic and moderately rough. The oxidized titanium surfaces showed no signs of antibacterial effects when compared to polished discs. However, the discs with silver revealed a decrease of accumulation of Porphyromonas gingivalis and Prevotella intermedia strains. Thus, the combination of Nd:YAG laser irradiation and hot-pressing was effective to produce silver-based patterns on titanium surfaces to inhibit the growth of pathogenic bacterial species. The laser parameters can be optimized to achieve different patterns, roughness, and thickness of the modified titanium layer regarding the type and region of the implant.


Subject(s)
Anti-Bacterial Agents/chemistry , Metal Nanoparticles/chemistry , Silver/chemistry , Titanium/chemistry , Anti-Bacterial Agents/pharmacology , Biofilms , Hydrophobic and Hydrophilic Interactions , Porphyromonas gingivalis/drug effects , Prevotella/drug effects , Silver/pharmacology , Surface Properties , Titanium/metabolism
20.
Cir Pediatr ; 34(1): 15-19, 2021 Jan 01.
Article in English, Spanish | MEDLINE | ID: mdl-33507639

ABSTRACT

OBJECTIVES: Orchiectomy is the most widely used surgical technique in testicular tumors (TT). However, according to tumor size, tumor markers, and histology, tumorectomy can be considered as the technique of choice, since these tumors are mostly benign. We present our experience with conservative surgery. MATERIAL AND METHODS: A retrospective study of 21 TT cases in 19 patients under 14 years of age treated in our healthcare facility from 1998 to 2018 was carried out. The following variables were analyzed: age, laterality, histological type, evolution, presence or absence of recurrence, and ultrasound and analytical follow-up. The therapeutic attitude used was reviewed while assessing the possibility of testicular preservation in selected patients. RESULTS: Conservative surgery was performed in 9 TT cases in 7 patients (2 bilateral cases). Mean age was 6 years (0-13 years). 86% of cases started as an asymptomatic scrotal mass. No significant differences were found in terms of laterality. Tumor markers were negative before and after surgery, except in an infant with high alpha-fetoprotein, which was normalized in the postoperative period. The histological study diagnosed 7 stromal TTs (three Leydig cell stromal TTs, one bilateral Sertoli cell stromal TT, one hamartoma, and one fibroma) and 2 germ cell TTs (bilateral epidermoid cyst). Evolution was favorable in all cases, without clinical or ultrasound recurrence. CONCLUSIONS: Conservative surgery of the testicular parenchyma using tumorectomy can be the first therapeutic option in benign tumors and in selected patients with bilateral tumor, since it allows future hormonal and reproductive function to be preserved.


OBJETIVOS: La orquiectomía ha sido la técnica quirúrgica clásicamente más empleada en tumores testiculares (TT). Sin embargo, en función del tamaño del tumor, marcadores tumorales e histología, se puede considerar la tumorectomía como técnica de elección, ya que en su mayoría se trata de tumores benignos. Presentamos nuestra experiencia en cirugía conservadora. MATERIAL Y METODOS: Estudio retrospectivo de 21 casos de TT en 19 pacientes menores de 14 años, tratados en nuestro centro entre 1998-2018. Analizamos las siguientes variables: edad, lateralidad, tipo histológico, evolución, existencia o no de recidivas, seguimiento ecográfico y analítico. Revisamos la actitud terapéutica empleada, con énfasis en la posibilidad de preservación testicular en pacientes seleccionados. RESULTADOS: Se realizó cirugía conservadora en nueve casos de TT tratados que correspondían a siete pacientes (dos bilaterales). La edad media de presentación fue de seis años (0-13 años). El 86% de los casos debutaron como masa escrotal asintomática. No existieron diferencias significativas en cuanto a lateralidad. Los marcadores tumorales fueron negativos antes y después de la intervención, salvo en un lactante con alfafetoproteína elevada, normalizada en el posoperatorio. El estudio histológico diagnostica 7TT estromales (tres de células de Leydig y uno bilateral de células de Sertoli, un hamartoma y un fibroma) y 2TT de células germinales (quiste epidermoide bilateral). Evolución favorable en todos ellos, sin recidivas clínicas ni ecográficas. CONCLUSIONES: La cirugía conservadora del parénquima testicular, mediante tumorectomía, puede ser la primera opción terapéutica en tumores benignos y en pacientes seleccionados con tumores bilaterales, con el objetivo de preservar la función hormonal y reproductora futura.


Subject(s)
Neoplasm Recurrence, Local , Testicular Neoplasms , Child , Humans , Male , Orchiectomy , Retrospective Studies , Testicular Neoplasms/surgery
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