Incorporación de Tecnología Tridimensional mediante Tomografía Microcomputarizada en el Estudio de la Anatomía de Salmónidos: Una Evaluación de Utilidad / Integration of Three-Dimensional Technology through Microcomputed Tomography in the Study of Salmonid Anatomy: A Utility Evaluation

Los salmónidos, durante su desarrollo, pueden experimentar ocasionalmente deformaciones esqueléticas. Para su diagnóstico se emplean diversas metodologías, entre las que se incluyen radiografías, técnicas histológicas, diafanización con tinciones de alizarina y azul de alcián, así como el uso del microscopio electrónico de barrido (SEM), cada una con sus inherentes ventajas y desventajas. Este estudio tuvo como finalidad evaluar y comparar la eficacia de la tomografía microcomputarizada (Micro-CT) para el análisis anatómico, reconstruyendo tridimensionalmente las imágenes y contrastándolas con los resultados obtenidos mediante la técnica de diafanización. Se analizaron las aletas caudales de cinco ejemplares de salmón Oncorhynchus kisutch: dos sujetos a diafanización y tres procesados para análisis mediante Micro-CT utilizando el equipo BRUKER SkyScan 1272. La técnica de Micro-CT demostró superioridad en la resolución de las estructuras óseas, facilitando una exploración detallada de las variaciones morfológicas y la distribución de la densidad mineral. Este enfoque permitió identificar anomalías en la morfología y crecimiento de las últimas vértebras y lepidotriquias dorsales, así como una densidad incrementada en lepidotriquias dorsales malformadas. La mayor resolución proporcionada por la Micro-CT no solo potencia nuestra comprensión de la ontogenia piscícola y su adaptación a ambientes diversos, sino que además inaugura perspectivas innovadoras para el estudio de la evolución de las estrategias locomotoras y las respuestas adaptativas frente a cambios ambientales a través del tiempo.

SUMMARY: During their development, some species of salmonids may occasionally experience skeletal deformations. Several methodologies are currently being used for the diagnosis of such malformations, among which X-rays, histological techniques, diaphanization coupled either with Alizarin Red or Alcian Blue stains, as well as Scanning Electron Microscopy (SEM) can be mentioned. Each one of those methods presents inherent advantages and disadvantages. The purpose of this study was twofold: Firstly, to evaluate and compare the effectiveness of microcomputed tomography (Micro-CT) technology for anatomical analysis, three-dimensionally reconstructing the obtained images; and secondly, to contrast those images with the results obtained through the diaphanization technique. The caudal fins of five specimens of the Oncorhynchus kisutch salmon were analyzed: Two specimens were subjected to diaphanization and three were processed for Micro-CT analysis, using the BRUKER SkyScan 1272 equipment. The Micro-CT technology demonstrated superiority in the resolution of bone structures, facilitating a detailed exploration of morphological variations, as well as the distribution of mineral density. This experimental approach allowed us to identify anomalies in the morphology and growth of the last vertebrae and dorsal lepidotrichiae, as well as an increased mineral density in the malformed dorsal lepidotrichiae. The higher resolution provided by Micro-CT not only enhances our understanding of the fish ontogeny and its adaptation to diverse environments, but also opens innovative perspectives for the study of the evolution of locomotor strategies and adaptive responses to environmental changes.

The Double Trouble: Caudal Duplication Syndrome-A rare case series with a review of literature

Caudal duplication syndrome (CDS) is a very rare disease entity with prevalence of less than 1 per 100,000 at birth.It includes a broad range of abnormalities and clinical symptoms , from single or partial duplication of the gastrointestinal, genitourinary and distal neural tube system organs to total duplication.There have been several ideas proposed to explain the complicated yet symmetrical abnormalities and the wide range of clinical manifestations of caudal duplication syndrome.In this case series, we present two confirmed cases of Caudal Duplication Syndrome in our institute.The management for this syndrome is individualized and may include surgical intervention to fuse or excise the duplicated organs.

Analgesic effects of caudal versus intravenous dexamethasone on bupivacaine based caudal block for paediatric infraumbilical surgeries

Background: Singleshot caudal block provides short lived postoperative analgesia necessitating continued exploration for adjuvants. Aim was to compare the analgesic efficacy between intravenous and caudal dexamethasone on bupivacaine based caudal block for paediatric infraumbilical surgeries. Methods: Following ethical clearance and parental consent, 69 children aged 1-6 years, of American society of anesthesiologists (ASA) physical status classification I and II were randomized into groups A, B and C, of 23 each. All subjects underwent laryngeal mask airway (LMA) general anaesthesia induced with propofol and maintained with isoflurane in 100% oxygen, and had caudal block with 1 ml/kg bupivacaine 0.25%. Additionally, groups B and C received caudal 0.1mg/kg and intravenous preinduction 0.25 mg/kg dexamethasone, respectively. Pain was assessed using FLACC scale. The time to first analgesic request (TTFAR) was defined as the interval from caudal injection until pain score was ?4; at this point, analgesic was given. Results: All 69 children were completely studied. The mean TTFAR (in minutes) was longest in Group B (485.40±24.50) followed by C (459.60±36.40), and shortest in group A (253.63±71.55), p=0.001, 0.024 and 0.968 for A versus B, A versus C and B versus C respectively, with greatest 24 hours pethidine consumption in Group A relative to groups B and C, p=0.001 and 0.025. Conclusions: Caudal 0.1 mg/kg or intravenous 0.25 mg/kg dexamethasone combined with bupivacaine significantly prolonged postoperative analgesic duration, with comparable analgesic profile between the caudal and intravenous routes, and without adverse effects.

Application value of MEX3A,CDX2,MUC2 and MUC5AC in judging cancerous gastric mucosal intestinal metaplasia / 中国现代医生

@#Objective To investigate the correlation between MEX3A and differentiation characteristics of gastric cancer and intestinal metaplasia,and its combination with caudal-related homeobox transcription factor 2(CDX2)and mucin 2(MUC2)and mucin 5AC(MUC5AC)to determine the role of carcinogenic intestinal metaplasia.Methods From January 2010 to December 2014,a total of 410 cases of gastric cancer and paracarcinoma paraffin-embedded tissue samples were selected from the Central Hospital Affiliated to Shenyang Medical College and the Second Hospital Affiliated to Shenyang Medical College.According to pathological diagnosis,they were divided into control group(mild superficial gastritis,79 cases),intestinal metaplasia group(149 cases)and gastric cancer group(182 cases).The expressions of MEX3A,CDX2,MUC2 and MUC5AC were detected by immunohistochemistry.Results MEX3A was highly expressed in gastric cancer group and intestinal metaplasia group,especially diffuse gastric cancer,poorly differentiated gastric cancer and type Ⅲ intestinal metaplasia(P<0.05).CDX2 and MUC2 were highly expressed in gastric cancer group and intestinal metaplasia group,especially intestinal type gastric cancer,highly and moderately differentiated gastric cancer,type Ⅰ and type Ⅱ intestinal metaplasia(P<0.05).The expression of MUC5AC was high in control group and low in gastric cancer group and intestinal metaplasia group,especially in intestinal type gastric cancer,type Ⅰ and type Ⅲ intestinal metaplasia(P<0.05).Gastric cancer and intestinal metaplasia differentiation were negatively correlated with MEX3A and MUC5AC expression,but positively correlated with CDX2 and MUC2 expression(P<0.05).MEX3A was negatively correlated with the expression of CDX2 and MUC2,and positively correlated with the expression of MUC5AC in gastric cancer(P<0.05).MEX3A was negatively correlated with the expression of CDX2 and MUC2 in intestinal metaplasia(P<0.05),while CDX2 was positively correlated with the expression of MUC2(P<0.05).Conclusion MEX3A is negatively correlated with gastric cancer and intestinal metaplasia differentiation.Gastric cancer is characterized by high MEX3A expression and low CDX2 and MUC2 expression.

Mermaid baby or sirenomelia: a lethal congenital anomaly

Mermaid syndrome is a very rare, lethal congenital anomaly. It is associated with other congenital anomalies and is incompatible with life. Typical clinical features are fused lower limb from perineum to ankle and single umbilical artery. Etiology is multifactorial and is extreme form of caudal regression syndrome. When diagnosed in early gestation, termination of pregnancy may be considered.

Neurolytic Caudal Epidural Block for Rectal Tenesmus: A Case Report

Rectal tenesmus is a very uncomfortable symptom. Though antiarrhythmic drugs and nerve blocks have been proposed as a treatment for rectal tenesmus, none is well-established. We report a 68-year-old female who undertook surgery for uterine cervical cancer and underwent chemotherapy. She got a bilateral nephrostomy and bowel obstruction during the chemotherapy because of recurrence. She decided to stop chemotherapy and to receive palliative care. She had a symptom of rectal tenesmus, which was refractory to medications. The clinical sign was severe and uncomfortable, making her very nervous. We planned to treat the rectal tenesmus with a nerve block. A ganglion impar block was insufficient to remove the symptom, and the saddle block failed due to epidural lipomatosis. We finally succeeded in alleviating the sign with a neurolytic caudal epidural block. Relief of tenesmus made her hope to spend her final period at home. She could stay at home with her family for seven days before death without recurrence of the symptom. Though there is no report about the effectiveness of neurolytic caudal epidural block for rectal tenesmus, we consider the block appropriate for the symptom.

Clinical application of medial caudal approach combined with middle page-turning lymphadenectomy in laparoscopic radical right hemicolectomy / 临床外科杂志

Objective lo explore the application value of medial caudal approach combined with middle page-turning lymphadenectomy in laparoscopic radical right hemicolectomy.Methods Eighty-six patients with right hemicolon cancer admitted to our hospital from May 2019 to May 2020 were selected as the research objects,and they were divided into an observation group of 43 cases and a control group of 43 cases by random drawing.The control group adopts the intermediate approach,and the observation group adopts the medial caudal approach combined with middle page-turning lymphadenectomy.The surgical recovery index,complication rate,serum tumor markers and survival index were compared between the two groups to evaluate the clinical efficacy and safety.Results There were no significant differences between the two groups in the number of lymph nodes removed,the length of the intestinal tube removed,extubation,fluid feeding and hospitalization time,the incidence of postoperative complications(P＞0.05),but the operation time and intraoperative bleeding in the observation group were significantly lower,and the postoperative exhaust time was shorter(P＜0.05).The serum CA19-9 and CEA levels of the two groups after one year decreased,and the serum CA19-9 and CEA levels of the observation group were lower than those of the control group(P＜0.05).The disease-free progression period was prolonged in the observation group(P＜0.05),but there was no difference in survival time.Conclusion The medial caudal approach combined with the middle page-turning lymphadenectomy has higher clinical application value in the laparoscopic radical right hemicolectomy,which is conducive to shortening the operation time and postoperative exhaust time,reducing the amount of intraoperative bleeding and postoperative serum CA19-9 and CEA levels,and improving the disease-free progression period with high safety.

Síndrome de regresión caudal en diabetes materna: reporte de caso / Caudal regression syndrome in maternal diabetes: case report

Resumen ANTECEDENTES: La diabetes mellitus sigue siendo una enfermedad de gran prevalencia mundial; en México alcanza el 13.7% y, de este porcentaje, el 30% ignora que la padece. Esta circunstancia se ha asociado con complicaciones durante el embarazo: malformaciones congénitas por hiperglucemia en el primer trimestre del embarazo y el síndrome de regresión caudal, entre otras. A pesar de los avances en el diagnóstico y tratamiento de esta enfermedad metabólica, estas alteraciones siguen provocando discapacidad, de ahí la importancia de su identificación temprana en el embarazo. CASO CLÍNICO: Paciente de 35 años, primigesta, con diagnóstico de diabetes tipo 2 establecido en el primer trimestre del embarazo, con hemoglobina glucosilada de 7.6%. En el ultrasonido estructural se observaron datos compatibles con el síndrome de regresión caudal y alteraciones severas en las extremidades. Al nacimiento, a las 18 semanas, se confirmó la luxación importante de las extremidades inferiores. CONCLUSIÓN: En la primera consulta prenatal debe practicarse el tamizaje para diabetes, sobre todo en pacientes con alto riesgo. Luego del diagnóstico son importantes los ultrasonidos de segundo nivel para detectar anomalías. La educación a la paciente es decisiva para el adecuado control metabólico y prevención de complicaciones durante el embarazo.

Abstract BACKGROUND: Diabetes mellitus continues to be a disease of high prevalence worldwide; in Mexico it reaches 13.7% and, of this percentage, 30% are unaware that they suffer from it. This circumstance has been associated with complications during pregnancy: congenital malformations due to hyperglycaemia in the first trimester of pregnancy and caudal regression syndrome, among others. Despite advances in the diagnosis and treatment of this metabolic disease, these alterations continue to cause disability, hence the importance of early identification in pregnancy. CLINICAL CASE: 35-year-old primigravida patient with a diagnosis of type 2 diabetes established in the first trimester of pregnancy, with a glycosylated haemoglobin of 7.6%. Structural ultrasound showed data compatible with caudal regression syndrome and severe alterations in the extremities. At birth, at 18 weeks, severe dislocation of the lower extremities was confirmed. CONCLUSION: Screening for diabetes should be performed at the first prenatal visit, especially in high-risk patients. After diagnosis, second level ultrasound is important to detect abnormalities. Patient education is crucial for adequate metabolic control and prevention of complications during pregnancy.

Evaluation of the Results of Septum Extension Batten Graft in Patients Referred for Septorhinoplasty

Abstract Introduction Correction of caudal septal deviations has always been a challenging subject in septorhinoplasty. The septum batten extension graft (SBEG) is a new graft that has potential properties in rhinoplasty. However, few reports have evaluated the surgical outcomes of this technique. Objective The purpose of this study was to evaluate the effectiveness of SBEG in correcting caudal septal deviation. Methods This cross-sectional study was conducted on patients with caudal septal deviation undergoing septorhinoplasty using SBEG at 2 different hospitals in 2019. We then retrospectively reviewed medical records and photographs of 50 patients at the preoperative period, as well as at 1-month, and 12-month postoperatively. Gross changes in nasolabial angle, columellar show, nasal tip projection, and dorsal nasal deviation were evaluated by a photographic analysis method, and nasal obstruction was assessed by patient satisfaction with breathing. Results There was a significant difference between the mean nasolabial angle and columellar show at 1 and 12-months postoperatively, compared with the previous values (p < 0.0001). The nasolabial angles were in a favorable position with an increase of 12 to 15 degrees compared with the preoperative state. The columellar show also improved by an average of 1.2 mm and was in good condition. The postoperative dorsal nasal deviation was significantly reduced, and projection was significantly increased (3.521 ± 0.087 mm vs. 0.719 ± 0.028; p < 0.0001; p < 0.001 ). Moreover, this method had a significant favorable effect on nasal obstruction (p = 0.049). Conclusion Our results showed that septorhinoplasty using SBEG is useful for correcting caudal septal deviation, with favorable surgical outcomes, and it has responded well to all five aforementioned criteria.

A COMPARATIVE STUDY BETWEEN CAUDAL ROPIVACAINE AND ROPIVACAINE PLUS DEXAMETHASONE FOR INFRAUMBILICAL SURGERY IN PEDIATRIC PATIENTS

Background: Caudal block is one of the most popular regional block in children with high success rate for infra-umbilical surgeries. Among local anaesthetics ropivacaine provides a greater margin of safety, less motor blockade, less neurological and cardiac toxicity and similar duration of analgesia compared to bupivacaine. Addition of dexamethasone as an additive to local anesthesia decreases the postoperative rescue analgesia consumption.This study was designed to compare the effectiveness of intra-operative and postoperative analgesia on adding dexamethasone to 0.15% ropivacaine with 0.15%ropvacaine given alone. A prospective double blinded Materials: randomised controlled study was conducted consisting of 60 patients undergoing infra-umbilical surgeries under general anesthesia with Caudal block. Patients were randomised into two groups. Group A received 0.15% Inj.ropivacaine 1.5ml/kg with 1ml normal saline and Group B received 0.15% Inj.Ropivacaine 1.5ml/kg with 0.1mg/kg Inj.dexamethasone in caudal block Mean FLACC pain score was comparable and statistically not signi?cant (P=0.083) in both groups upto 30min Results: postoperatively. At 60min mean pain score in group A was 0.30 ± 0.54 and in group B was 0 (P=0.005) which was statistically signi?cant. In group A 40%(12) patients required rescue analgesia whereas in group B only 10%(3) patients required analgesia(P= 0.007) Patients remained hemodynamically stable throughout the procedure. After 60min Conclusion: postoperatively FLACC score was signi?cantly higher in group A as compared to group B. It concludes that addition of dexamethasone signi?cantly reduced postoperative pain and need for rescue analgesia without any side effects.

Effect of environmental characteristics on the diversity of aquatic macroinvertebrates in Andean rivers regulated for hydroelectric generation / Efecto de características ambientales en la diversidad de macroinvertebrados acuáticos en ríos andinos regulados para generación hidroeléctrica

Introduction: The Andes are characterized by an abundance of water resources and flows are frequently regulated by reservoirs for the generation of energy. The effects of regulation on aquatic macroinvertebrate communities are not well known in Colombia. Objective: To test the hypothesis that regulated currents have less macroinvertebrate diversity. Methods: We collected water and organism samples before, and after, the regulation of the Tafetanes, Calderas and Arenosa rivers, in Antioquia, Colombia, during various hydrological cycles (rain, transition and drought) and climatic phenomena (ENSO/El Niño Phenomenon) between 2016 and 2018. Results: We collected 53 214 individuals, from 165 taxa, mostly from the orders Ephemeroptera, Plecoptera, Trichoptera and Diptera (90 % of captures). Changes in diversity responded to spatial differences rather than to physicochemical variables: diversity was higher in non-regulated sites, regardless of the hydrological period or associated ENSO. Most species were found in all sampling sites, but abundance was higher in the site with the best habitat conservation status. Conclusion: The results support the hypothesis that physical barriers have effects on macroinvertebrate diversity at the local scale, however, the condition of adjacent habitats also seems to play an important role in preserving richness and abundance. The conservation of forest adjacent to the riverbed could mitigate the impacts of regulation.

Introducción: Los Andes se caracterizan por tener gran abundancia de recursos hídricos y las corrientes son frecuentemente reguladas por embalses para la generación de energía. Los efectos de la regulación en las comunidades de macroinvertebrados acuáticos no se conocen bien en Colombia. Objetivo: Probar la hipótesis de que las corrientes reguladas presentan menor diversidad de macroinvertebrados. Métodos: Recolectamos muestras de agua y organismos, antes y después de la regulación de los ríos Tafetanes, Calderas y La Arenosa, en Antioquia, Colombia, durante varios ciclos hidrológicos (lluvia, transición y sequía) y fenómenos climáticos (ENSO/Fenómeno de El Niño) entre 2016 y 2018. Resultados: Recolectamos 53 214 individuos, de 165 táxones, en su mayoría de los órdenes Ephemeroptera, Plecoptera, Trichoptera y Diptera (90 % de las capturas). Los cambios en la diversidad respondieron a las diferencias espaciales más que a las variables fisicoquímicas: la diversidad fue mayor en sitios no regulados, independientemente del periodo hidrológico o del ENSO. La mayoría de las especies se encontraron en todos los sitios de muestreo, pero su abundancia fue mayor en el sitio de mejor estado de conservación del hábitat. Conclusiones: Los resultados apoyan la hipótesis de que las barreras físicas tienen efectos sobre la diversidad de macroinvertebrados a escala local, sin embargo, el estado de los hábitats adyacentes también parece jugar un papel importante en la preservación de la riqueza y abundancia. La conservación del bosque adyacente podría mitigar los impactos generados por la regulación.

Sirenomelia

Sirenomelia is a rare and fatal congenital defect characterized by varying degrees of lower limb fusion, thoracolumbar spinal anomalies, sacrococcygeal agenesis, genitourinary, and anorectal atresia. We report a case of baby, born with narrow chest, bilateral hypoplastic thumb, fused lower limbs with a single foot and 5 toes, absent external genitalia, imperforate anus and umbilical cord with single umbilical artery. When diagnosed antenatally, termination should be offered

Manejo anestésico en neonatos con tumoraciones pulmonares / Anesthetic management in neonates with lung tumors

Resumen: Introducción: Los tumores pulmonares congénitos son patologías poco frecuentes; asimismo, cuando requieren intervención quirúrgica, el médico anestesiólogo se enfrenta a un reto en el manejo de estos pacientes. Presentación del caso: En este artículo describimos el caso y el manejo anestésico de un recién nacido de 37.5 semanas de gestación (SDG) y 26 días de vida extrauterina, programado para toracotomía posterolateral izquierda más lobectomía inferior izquierda y colocación de catéter venoso central bajo anestesia combinada (anestesia general balanceada más bloqueo caudal con bupivacaína y morfina). Conclusiones: Las consideraciones anestésicas para los procedimientos quirúrgicos en neonatos y/o pacientes pediátricos se convierten en un reto para el anestesiólogo, debido a la inmadurez de algunos de los sistemas, se considera que la técnica anestésica idónea para el adecuado manejo de los pacientes neonatales sigue siendo la técnica combinada. El anestesiólogo debe mantener en mente dicha técnica así como los eventos y/o efectos secundarios que se puedan derivar de la misma y de este modo instaurar de manera oportuna el tratamiento pertinente.

Abstract: Introduction: Congenital lung tumors are rare pathologies, likewise when surgical intervention is required, the anesthesiologist faces a challenge in the anesthetic management of these patients. Presentation of the case: The following article describes the case of a 26-day-old newborn child scheduled for left posterolateral thoracotomy plus lower left lobectomy and central venous catheter placement under combined anesthesia (balanced general anesthesia plus caudal block with bupivacaine and morphine). Conclusions: Anesthetic considerations for surgical procedures in neonates and/or pediatric patients become a challenge for the anesthesiologist, due to the immaturity of some of the systems, thus considering that the ideal anesthetic technique for the proper management of in neonatal patients, the combined technique continues, with epidural blocks for the management of peri- and postoperative pain. The anesthesiologist must keep in mind this technique as well as the events and/or side effects that may derive from it, thus establishing the pertinent treatment in a timely manner.

Anesthesia in a child with arthrogryposis multiplex congenita – how to proceed: A case report

Arthrogryposis multiplex congenita (AMC) consists of a heterogenous group of disorders characterized by non-progressive congenital joint contractures. They have tense skin, minimal subcutaneous tissue, and muscle mass. The anesthetic management of these children is complicated by associated congenital abnormalities, airway anomalies, congenital heart disease, pulmonary hypoplasia, and vertebral anomalies. We managed a case of AMC with bilateral contractures of both upper and lower limb and neck who presented for correction of bilateral equino varus.

Caudal regression syndrome: A rare case report with review of the literature

Caudal regression syndrome is a very rare neural tube disorder, in which the caudal vertebral column and spinal cord develop abnormally, causing substantial sensory and motor deficits, primarily in the legs. An abnormality in the spinal cord and nerve roots interacts with a section of lumbar, lumbosacral, or coccygeal spinal dysgenesis or agenesis. Here, we present a rare case of caudal regression syndrome in a 3-year-old male child who was brought to the pediatrics department with a serious complaint of urine dribbling since infancy. The infant was discovered with spina bifida, lumbar scoliosis, and cavus deformity in both feet during a routine health check. For which, a neurological opinion was taken. Plain X-ray revealed a partial sacral agenesis, MRI revealed anterior and posterior nerve roots of cauda equina divided into two bundles of fibers due to abnormal path. The lower back and both gluteal areas were underdeveloped. On the basis of radiological findings, a diagnosis of the syndrome was confirmed.

Assessment of Stress Response Attenuation with Caudal Morphine Using a Surrogate Marker During Pediatric Cardiac Surgery

Background:Measurement of biomarkers representing sympathetic tone and the surgical stress response are helpful for objective comparison of anesthetic protocols. Aims: The primary aim was to compare changes in chromogranin A levels following pump pediatric cardiac surgery between children who received bolus caudal morphine and those who received a conventional intravenous narcotic?based anesthesia regime. The secondary objectives were to compare hemodynamic responses to skin incision and the magnitude of the rise in blood sugar values between the groups. Settings and Design: A prospective observational study at a tertiary cardiac center. Measurements and Methods: Sixty pediatric cardiac surgical patients were randomized to Group I [n = 30] to receive intravenous narcotic?based anesthesia and Group II [n = 30] to receive single?shot caudal morphine. Baseline and postoperative chromogranin A levels, the hemodynamic response to skin incision, changes in blood sugar levels, and the total intravenous narcotic dose administered were recorded for each participant. Statistical Analysis: Pearson’s Chi?squared test was used for comparison of categorized variables, and Mann–Whitney test was used for the analysis of continuous data. Results: Changes in chromogranin A levels and blood sugar levels were comparable in both groups. Group II received a lower narcotic dosage (P ? 0.001), and the response to skin incision as reflected by systolic pressure rise was less (P = 0.006). Conclusions: Surgical stress response attenuation was similar to caudal morphine as compared with intravenous narcotic?based anesthesia techniques as reflected by a similar increase in chromogranin A levels

CAUDAL MIGRATION AND TRANS-ANAL EXTRUSION OF VENTRICULOPERITONEAL SHUNT IN A CHILD : A CASE REPORT

We present an unusual case of anal extrusion of the peritoneal end of a ventriculo-peritoneal shunt (VP shunt) in a 5 year old male child. The patient was suffering from aqueductal stenosis for which the shunt was placed 2 years ago. Pertinent literature is reviewed regarding this rare complication in such a common surgery.

Combined application of intraspinal analgesia, bilateral pudendal nerve block anesthesia and modified perineal protection in midwifery / 中国基层医药

Objective:To investigate the clinical efficacy of intraspinal analgesia, pudendal nerve block anesthesia and modified perineal protection in combination in midwifery.Methods:A total of 160 primiparous women who were subjected to full-term vaginal delivery in Suqian Hospital of Nanjing Drum Tower Hospital Group between January 2019 and January 2021 were included in this study. They were randomly assigned to undergo either bilateral pudendal nerve block combined with modified perineal protection (control group, n = 80) or intraspinal analgesia, pudendal nerve block anesthesia and modified perineal protection in combination (observation group, n = 80). Each clinical index was compared between the control and observation groups. Results:Duration of labor in the observation group was significantly shorter than that in the control group [(7.23 ± 2.11) hours vs. (9.35 ± 3.79) hours, t = 4.27, P < 0.05). Cesarean section rate in the observation group was significantly lower than that in the control group [8.7% (7/80) vs. 52.5% (42/80), χ 2 = 17.18, P < 0.05]. Incidence of perineal tears in the observation group was significantly lower than that in the control group [8.7% (7/80) vs. 32.5% (26/80), χ 2 = 15.48, P < 0.05]. Third-degree perineal tears occurred in neither group. Time of postpartum off-bed ambulation and length of postpartum hospital stay in the observation group were (1.37 ± 0.13) days and (3.22 ± 0.31) days, respectively, which were significantly shorter than those in the control group [(2.52 ± 0.22) days, (5.23 ± 0.62) days, t = 25.90, 25.94, both P < 0.05). The incidence of complications in the observation group was significantly lower than that in the control group [7.5% (6/80) vs. 23.7% (19/80), χ 2 = 8.01, P < 0.05]. There were no significant differences in incidence of neonatal asphayxia, 2-hour postpartum hemorrhage and postpartum hemorrhage between the two groups (all P > 0.05). Conclusion:During midwifery of full-term vaginal delivery, combined application of intraspinal analgesia, bilateral pudendal nerve block anesthesia and modified perineal protection can shorten duration of labor and decrease cesarean section rate.

Glutamatergic Neurons in the Caudal Zona Incerta Regulate Parkinsonian Motor Symptoms in Mice / 神经科学通报·英文版

Parkinson's disease (PD) is the second most common and fastest-growing neurodegenerative disorder. In recent years, it has been recognized that neurotransmitters other than dopamine and neuronal systems outside the basal ganglia are also related to PD pathogenesis. However, little is known about whether and how the caudal zona incerta (ZIc) regulates parkinsonian motor symptoms. Here, we showed that specific glutamatergic but not GABAergic ZIc

Comparison of dorsal penile nerve block and caudal block for postoperative analgesic efficacy in pediatric patients undergoing penile surgery with general anesthesia: a meta-analysis / 中华麻醉学杂志

Objective:To systematically evaluate the efficacy of dorsal penile nerve block (DPNB) and caudal block (CB) for analgesia after penile surgery under general anesthesia in the pediatric patients.Methods:Databases including PubMed, EMbase, Web of Science, the Cochrane Library, Wanfang, VIP, CNKI and CBM were searched to collect the randomized controlled trials involving DPNB and CB for penile surgery under general anesthesia in children from inception to September 2021.Meta-analysis was performed using RevMan 5.4 software.Results:Sixteen randomized controlled trials involving 1 271 pediatric patients were enrolled.The results of meta-analysis showed that the requirement for analgesic drugs during recovery was significantly lower in CB group than in DPNB group ( RR=2.54, 95% CI 1.19-5.40, P=0.020); the time of first postoperative activity was significantly shortened ( SMD=-0.68, 95% CI -1.23--0.13, P=0.020), and the incidence of postoperative motor block was decreased ( RR=0.05, 95% CI 0.01-0.16, P<0.001) in DPNB group as compared with CB group.There were no significant differences in the incidence of intraoperative block failure ( RR=1.25, 95% CI 0.62-2.51, P=0.530) between two groups.There were no significant differences in objective pain scores at awakening ( SMD=-0.29, 95% CI -0.01-0.59, P=0.050), at 1 h after surgery ( SMD=1.02, 95% CI -1.37-3.41, P=0.400), or at 2 h after surgery ( SMD=0.05, 95% CI -0.59-0.68, P=0.880) between two groups.There were no significant differences in the incidence of agitation during recovery ( RR=0.71, 95% CI 0.44-1.14, P=0.150) between two groups.There were no significant differences in the time of first urination ( MD=-84.52, 95% CI -195.72-26.69, P=0.140) between two groups.There were no significant differences in the incidence of postoperative nausea and vomiting ( RR=0.56, 95% CI 0.29-1.07, P=0.080) between two groups. Conclusions:DPNB and CB provide similar postoperative analgesic efficacy, but DPNB can prevent the occurrence of postoperative motor block, which is helpful for the postoperative rehabilitation in the pediatric patients undergoing penile surgery with general anesthesia.