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Rev. bras. ginecol. obstet ; 45(2): 96-103, Feb. 2023. tab, graf
Article in English | LILACS | ID: biblio-1449706


Abstract This comprehensive review compares clinical protocols of important entities regarding the management of fetal growth restriction (FGR), published since 2015. Five protocols were chosen for data extraction. There were no relevant differences regarding the diagnosis and classification of FGR between the protocols. In general, all protocols suggest that the assessment of fetal vitality must be performed in a multimodally, associating biophysical parameters (such as cardiotocography and fetal biophysical profile) with the Doppler velocimetry parameters of the umbilical artery, middle cerebral artery, and ductus venosus. All protocols reinforce that the more severe the fetal condition, the more frequent this assessment should be made. The timely gestational age and mode of delivery to terminate the pregnancy in these cases can vary much between the protocols. Therefore, this paper presents, in a didactic way, the particularities of different protocols for monitoring FGR, in order to help obstetricians to better manage the cases.

Resumo Esta revisão compreensiva compara protocolos clínicos de entidades importantes em relação ao manejo da restrição de crescimento fetal (RCF), publicados desde 2015. Cinco protocolos foram escolhidos para a extração de dados. Não houve diferenças relevantes quanto ao diagnóstico e classificação da RCF entre os protocolos. Em geral, todos os protocolos sugerem que a avaliação da vitalidade fetal deve ser realizada de forma multimodal, associando parâmetros biofísicos (como cardiotocografia e perfil biofísico fetal) aos parâmetros dopplervelocimétricos da artéria umbilical, artéria cerebral média e ducto venoso. Todos os protocolos reforçam que quanto mais grave a condição fetal, mais frequente essa avaliação deve ser feita. A idade gestacional oportuna e o modo de parto para interromper a gravidez nesses casos podem variar muito entre os protocolos. Portanto, este trabalho apresenta, de forma didática, as particularidades de diferentes protocolos de acompanhamento de RCF, a fim de auxiliar os obstetras no melhor manejo dos casos.

Humans , Infant, Newborn , Infant, Premature , Cardiotocography , Laser-Doppler Flowmetry , Guidelines as Topic , Fetal Growth Retardation
Chinese Journal of Burns ; (6): 481-485, 2022.
Article in Chinese | WPRIM | ID: wpr-936035


The accurate diagnosis of burn wound depth is particularly important for evaluating the disease prognosis of burn patients. In the past, the diagnosis of burn wound depth often relied on the subjective judgment of doctors. With the continuous development of diagnostic technology, the methods for judging the depth of burn wound have also been updated. This paper mainly summarizes the research progress in the applications of indocyanine green angiography, laser Doppler imaging, laser speckle contrast imaging, and artificial intelligence in the diagnosis of burn wound depth, and compares the advantages and disadvantages of these techniques, so as to provide ideas for accurate diagnosis of burn wound depth.

Humans , Angiography , Artificial Intelligence , Burns/diagnosis , Laser-Doppler Flowmetry/methods , Skin , Wound Healing
Article in English | LILACS | ID: biblio-1370080


Objective: it is well known that low omentin levels and reduced bioavailability of nitric oxide (NO) are outgrowth of obesity. Besides, in obese subjects, microvascular dysfunction can be an initial stage of cardiovascular diseases. This situation can be evaluated with skin laser­Doppler flowmetry (LDF). Methods: in this study we investigated the effects of 12 weeks moderate physical exercise on microvascular reactivity and plasma levels of omentin and NO in 25 overweight and obese subjects. Control group was composed of 28 sedentary participants who were neither obese nor overweight. Microvascular reactivity was handled by measurement of skin blood flow from the ring finger of the right hand with LDF, which is a non­invasive method for evaluation. With this method, it was aimed to examine the post­occlusive reactive hyperemia response of the patients. None of the participants in both groups have never followed a regular exercise schedule in their life span. Results: with regular exercise, there was a statistically significant decrease in glucose (p=0.008), cholesterol (p=0.05), and triglyceride (p=0.048) levels, while body mass index, high­density lipoprotein, and low­density lipoprotein levels did not change significantly in overweight/obese group. Also, the omentin level significantly increased (p=0.01), but NO level did not change significantly. Moreover, the amount of change in omentin and NO levels measured before and after the physical exercise were significantly correlated (r=0.57). Considering the microcirculation, rest flow (p=0.001) and peak flow value of LDF (p=0.001) increased after the physical exercise. Conclusion: our study shows that moderate physical exercise affects microvascular reactivity and plasma levels of omentin in overweight and obese subjects.

Objetivo: sabe-se que níveis baixos de omentina e a reduzida biodisponibilidade de óxido nítrico (NO) são consequências da obesidade. Além disso, a disfunção microvascular pode ser um estágio inicial de doenças cardiovasculares em indivíduos obesos. Essa situação pode ser avaliada com a fluxometria de pele laser-Doppler (LDF). Métodos: foram investigados os efeitos do exercício físico moderado por 12 semanas na reatividade microvascular e nos níveis plasmáticos de omentina e NO em 25 indivíduos com sobrepeso e obesidade. O grupo controle foi composto por 28 participantes sedentários que não eram obesos nem com sobrepeso. A reatividade microvascular foi obtida pela medida do fluxo sanguíneo da pele do dedo anelar da mão direita com LDF, que é um método não invasivo de avaliação. Com este método, objetivou-se examinar a resposta da hiperemia reativa pós-oclusiva dos pacientes. Os participantes de ambos os grupos nunca seguiram um cronograma regular de exercícios em sua vida. Resultados: com o exercício regular houve diminuição estatisticamente significativa dos níveis de glicose (p=0,008), de colesterol (p=0,05) e de triglicerídeos (p=0,048), enquanto o índice de massa corporal e os níveis de lipoproteínas de alta e baixa densidade não se alteraram significativamente no grupo com sobrepeso/obesidade. Além disso, o nível de omentina aumentou significativamente (p=0,01), mas o nível de NO não apresentou modificações significas. Observou-se, também, que as modificações nos níveis de omentina e NO mensurados antes e após o exercício físico foram significativamente correlacionados (r=0,57). Em relação à microcirculação, os valores do fluxo de repouso (p=0,001) e do valor de fluxo de pico e da LDF (p=0,001) aumentaram após o exercício físico. Conclusão: nosso estudo mostra que o exercício físico moderado afeta a reatividade microvascular e os níveis plasmáticos de omentina em indivíduos com sobrepeso e obesidade.

Humans , Male , Female , Blood Circulation , Cardiovascular Diseases , Exercise , Obesity , Laser-Doppler Flowmetry
São Paulo; s.n; s.n; 2021. 60 p. tab, graf.
Thesis in English | LILACS | ID: biblio-1415547


Unprotected chronic exposure to ultraviolet radiation generates many harmful effects to human skin and UV filters are essential to health, however, traditional sunscreens do not provide enough protection against cutaneous oxidative stress, a process amplified by UV radiation. Therefore, is been proposed the development of multifunctional photoprotective formulations, acting in the absorption/reflection of UV radiation and assisting in cutaneous homeostasis. In the present study, ferulic acid is used in conjunction with two sunscreens, bemotrizinol and ethylhexyl triazone, for the determination of biosafety and efficacy methods, using techniques that better elucidate the effects of ferulic acid. Skin permeation assays were performed by applying a formulation containing the three substances in the stratum corneum of volunteers, which were removed by the tape stripping method (ex vivo) with follow quantification by high performance liquid chromatography (HPLC). The test was able to evaluate the penetration depth of the substances, characterizing them. In addition, the simultaneous quantification of the three substances was performed by a single and fast method, facilitating their analysis and improving the technique. Also, TBARS (thiobarbituric acid reactive substances) assays were performed in stratum corneum removed by tape stripping (ex vivo), evaluating the potential of cutaneous lipid peroxidation, with or without ferulic acid. To date, it is the first time that TBARS method is used to characterize the stratum corneum (ex vivo) and quantified by HPLC. The protocol developed may aid in the efficacy of antioxidant agents in studies aimed at elucidating the level of lipid peroxidation caused by drugs and cosmetics, and even in carrying out baseline studies characterizing different ethnicities and genders. As last, an anti-inflammatory in vivo assay with Laser Doppler flowmetry equipment was used to compare the sunscreen formulation with or without ferulic acid. Data indicated that the antioxidant reduced the angular coefficient of the perfusion units, mitigating the inflammatory effects. Furthermore, a significant difference was found between the genders, suggesting a more pronounced inflammatory reaction in women. Ferulic acid proved to be a valuable resource, besides being safe and raise the SPF of sunscreens, it also mitigates the effects of inflammation

A exposição crônica desprotegida à radiação ultravioleta (UV) contribui para o desenvolvimento de câncer de pele e os filtros solares são relevantes para evitar tais efeitos prejudiciais, porém, os protetores solares tradicionais não geram proteção suficiente contra o estresse oxidativo cutâneo. Logo, espera-se o desenvolvimento de formulações fotoprotetoras multifuncionais, atuando não somente na absorção e/ou reflexão da radiação UV, mas, também, auxiliando na homeostase cutânea, com presença de agentes antioxidantes. No presente estudo foi utilizado o ácido ferúlico conjuntamente com dois filtros solares, o bemotrizinol e a triazona de octila, para determinação de métodos de segurança e eficácia, utilizando técnicas que melhor elucidem e comprovem os efeitos do ácido ferúlico. Foram realizados ensaios de permeação cutânea pela aplicação tópica de formulação contendo as três substâncias em voluntários, sendo o estrato córneo retirado pelo método de tape stripping (ex vivo) com subsequente quantificação por cromatografia líquida de alta eficiência (CLAE). O ensaio pôde avaliar a profundidade de penetração das substâncias, caracterizando-as. Ademais, a quantificação simultânea das três substâncias foi efetuada por método único e rápido, facilitando análise com aprimoramento da técnica. Em adição, foi realizado ensaios de TBARS (substâncias reativas ao ácido tiobarbitúrico) em estrato córneo removido por tape stripping (ex vivo), para avaliar o potencial de peroxidação lipídica cutânea, contendo ou não o ácido ferúlico. Até o presente momento, é a primeira vez que o método TBARS é utilizado para caracterização do estrato córneo (ex vivo) e quantificada por CLAE. O protocolo desenvolvido pode auxiliar na eficácia de agentes antioxidantes, em estudos que visam elucidar o nível de peroxidação lipídica causada por medicamentos e cosméticos e, até mesmo, na realização de estudos de base, caracterizando etnias e gêneros. Ademais, um ensaio anti-inflamatório in vivo com equipamento de fluxometria Laser Doppler foi utilizado para comparar a formulação fotoprotetora com ou sem ácido ferúlico. Os dados indicaram que o antioxidante reduziu o coeficiente angular das unidades de perfusão, mitigando os efeitos inflamatórios. Ainda, foi identificada diferença entre os gêneros, sugerindo reação inflamatória mais pronunciada em mulheres. O ácido ferúlico provou ser um recurso valioso, além de ser seguro e elevar o FPS dos fotoprotetores, também atenuando os efeitos da inflamação

Sunscreening Agents/analysis , Efficacy , Protective Factors , Anti-Inflammatory Agents/analysis , Antioxidants/administration & dosage , Radiation , Skin Neoplasms/classification , Ultraviolet Rays/adverse effects , Pharmaceutical Preparations/analysis , Chromatography, High Pressure Liquid/methods , Thiobarbituric Acid Reactive Substances/pharmacology , Laser-Doppler Flowmetry/methods , Oxidative Stress/drug effects , Cosmetics/classification , Diagnosis
J. oral res. (Impresa) ; 9(5): 392-399, oct. 31, 2020. graf, ilus, tab
Article in English | LILACS | ID: biblio-1179028


Background: Oral mucositis (OM) is an inflammation of the oral mucosa due to cancer therapy that compromises the patient's quality of life. Laser Doppler flowmetry (LDF) is a non-invasive method to monitor microvascular blood flow (BF) in real-time. Purpose: Develop a method to evaluate BF in the genian region cheek in patients undergoing chemotherapy by LDF and compare the degrees of OM and pain with evaluation of BF. Material and methods: Evaluation of OM was performed using the World Health Organization (WHO) and Oral Mucositis Assessment Scale (OMAS) scales and the visual analog scale for pain evaluation. For flowmetry analysis, a laser Doppler flowmeter (moorVMSTM™, 780 nm wavelength and VP3 probe), fixed by an acrylic resin support was used; VP3 probe was positioned on the genian region and the patient's head was stabilized with a neck pillow for an accurate measurement. The Wilcoxon test was used to compare the flowmetry results at the studied times. The Pearson correlation coefficient was used to evaluate relationships between BF and the WHO, OMAS and visual analog scales. Results: Eleven patients of both sexes, aged between 30 and 78 years, with OM were included. An increase in cutaneous BF was observed at the initial times of OM, with progressive reduction during the chemotherapy cycle. There was a statistical difference (p<0.05) between time point T0 (first consultation) and time point T6 (last consultation). Conclusion: The method developed in this pilot study is effective, reliable, and reproducible, and allows the evaluation of BF dynamics in the genian region using LDF of patients undergoing chemotherapy at risk of developing OM.

Antecedentes: La mucositis oral (MO) es una inflamación de la mucosa oral debido a la terapia del cáncer, que compromete la calidad de vida del paciente. La flujometría láser Doppler (FLD) es un método no invasivo para monitorear el flujo sanguíneo microvascular (FS) en tiempo real. Objetivo: Desarrollar un método para evaluar la FS en la mejilla de la región geniana en pacientes sometidos a quimioterapia por FLD y comparar los grados de MO y dolor con la evaluación del FS. Material y Métodos: La evaluación de la MO se realizó utilizando las escalas de la Organización Mundial de la Salud (OMS) y la Escala de Evaluación de la Mucositis Oral (OMAS) y la escala analógica visual para la evaluación del dolor. Para el análisis de flujometría se utilizó un flujómetro láser Doppler (moorVMSTM™, longitud de onda de 780 nm y sonda VP3), fijado por un soporte de resina acrílica; La sonda VP3 se colocó en la región geniana y la cabeza del paciente se estabilizó con una almohada para el cuello para una medición precisa. Se utilizó la prueba de Wilcoxon para comparar los resultados de la flujometría en los tiempos estudiados. Se utilizó el coeficiente de correlación de Pearson para evaluar las relaciones entre FS y las escalas de la OMS, OMAS y analógicas visuales. Resultados: Se incluyeron 11 pacientes de ambos sexos, con edades comprendidas entre 30 y 78 años, con MO. Se observó un aumento del FS cutáneo en los momentos iniciales de la MO, con reducción progresiva durante el ciclo de quimioterapia. Hubo una diferencia estadística (p<0.05) entre el momento T0 (primera consulta) y el momento T6 (última consulta). Conclusión: El método desarrollado en este estudio piloto es efectivo, confiable y reproducible, y permite evaluar la dinámica del FS en la región geniana utilizando FLD de pacientes sometidos a quimioterapia con riesgo de desarrollar MO.

Humans , Male , Female , Adult , Middle Aged , Aged , Stomatitis/etiology , Laser-Doppler Flowmetry , Drug-Related Side Effects and Adverse Reactions , Pain , Quality of Life , Microcirculation , Antineoplastic Agents/adverse effects
Rev. Fac. Cienc. Méd. Univ. Cuenca ; 38(2): 29-38, ago.2020. ^c21 cm.ilus, tab
Article in Spanish | LILACS | ID: biblio-1178356


Introducción: la flujometría de la arteria pulmonar en fetos sanos puede ser un estudio predictor de la madurez pulmonar, lo que conlleva a un impacto en la disminución de la mortalidad perinatal.Objetivo: establecer el índice de tiempo de aceleración/tiempo de eyección de la arteria pulmonar (TA/TE) como un indicador de madurez pulmonar fetal en gestantes entre 26 y 40 semanas de gestación (SG), usuarias del Hospital Especializado Fundación Humanitaria Pablo Jaramillo Crespo, periodo 2017.Métodos: estudio de validación de prueba diagnóstica. Se evaluó la flujometría de la arteria pulmonar por ecografía doppler en 300 fetos sanos de gestantes entre 15 y 45 años de edad. Para la recolección de datos se utilizó encuestas y para la determinación de la validez se usó los estadísticos sensibilidad (S), especificidad (E), valor predictivo positivo (VPP) y valor predictivo negativo (VPN). Resultados: el valor del índice TA/TE de la arteria pulmonar fue 0.216 para las gestantes entre 26-28 SG; de 0.253 entre 29-31 SG; de 0.279 entre 32-34 SG; de 0.315 para las gestantes entre 35-37 SG y de 0.349 entre 38-40 SG. Las 37 SG en punto de corte fue de 0.320; el área ROC fue 0.98 con una S: 95.2%, E: 97.2%. VPP 93.0% y VPN 98.1%.Conclusiones: el índice TA/TE de la arteria pulmonar demostró correlación con la edad gestacional. Un índice TA/TE de 0.320, como punto de corte, predice madurez pulmonar fetal (AU);

Introduction: pulmonary artery flow metric in healthy fetuses can be a predictive study of lung maturity, which leads to an impact on the decrease in perinatal mortality.Objective: to establish the ratio of pulmonary artery acceleration time to ejection time (AT/ET) as an indicator of fetal lung maturity in pregnant women from 26 to 40 weeks of gestation (WG), users of the "Hospital Especializado Fundación Humanitaria Pablo Jaramillo Crespo", period 2017.Methods: A validity study of diagnostic tests was carried out. Pulmonary artery flow metric was evaluated by Doppler ultrasound in 300 healthy fetuses of pregnant women between 15 to 45 years old. Surveys were used to collect data. Sensitivity (S), specificity (E), positive predictive value (PPV) and negative predictive value (NPV) were used to determine validity.Results: the value of the TA / TE index of the pulmonary artery was 0.216 for pregnant women between 26-28 WG; of 0.253 between 29-31 WG; 0.279 between 32-34 WG; 0.315 for pregnant women between 35-37 WG and 0.349 between 38-40 WG. The 37 WG at the cut-off point was 0.320; the ROC area was 0.98 with a S: 95.2%, E: 97.2%. The PPV 93.0% and NPV 98.1%.Conclusions: the AT/ET ratio of pulmonary artery showed correlation with gestational age. An AT/ET ratio of 0.320, as a cut-off point, predicts fetal lung maturity (AU);

Humans , Female , Pregnancy , Adolescent , Adult , Middle Aged , Young Adult , Pulmonary Artery/diagnostic imaging , Gestational Age , Ultrasonography, Doppler , Fetal Organ Maturity , Lung/embryology , Sensitivity and Specificity , Laser-Doppler Flowmetry
J. appl. oral sci ; 28: e20190145, 2020. graf
Article in English | LILACS | ID: biblio-1056576


Abstract Ultrasonic wave technology is widely used during dental treatments. We previously demonstrated that this method protects the gingival tissue. However, the physiological change on the gingival microvasculature caused by this method remains unclear. Objective The aim of this study was to investigate the relationship between the morphological and physiological effects on gingival microcirculation when preparing teeth, using the conventional dental turbine or ultrasonic method. Methodology The lower premolar teeth of beagle dogs were prepared along the gingival margin by using a dental turbine or ultrasonic wave instrument. Gingival vasculature changes were investigated using scanning electron microscopy for corrosion resin casts. Gingival blood flow at the preparation site was determined simultaneously by laser Doppler flowmetry. These assessments were performed immediately (Day 0), at 7 days and 30 days after tooth preparation. Results At day 0, in the turbine group, blood vessels were destroyed and some resin leaked. Furthermore, gingival blood flow at the site was significantly increased. In contrast, the ultrasonic group demonstrated nearly normal vasculature and gingival blood flow similar to the non-prepared group for 30 days after preparation. No significant alterations occurred in gingival circulation 30 days after either preparation; however, the turbine group revealed obvious morphological changes. Conclusions Based on multiple approach analyses, this study demonstrated that ultrasonic waves are useful for microvascular protection in tooth preparation. Compared with a dental turbine, ultrasonic wave instruments caused minimal damage to gingival microcirculation. Tooth preparation using ultrasonic wave instruments could be valuable for protecting periodontal tissue.

Humans , Animals , Female , Dogs , Tooth Preparation/instrumentation , Ultrasonic Waves , Gingiva/blood supply , Microcirculation/physiology , Time Factors , Microscopy, Electron, Scanning , Clinical Protocols , Reproducibility of Results , Laser-Doppler Flowmetry/methods , Tooth Preparation/methods , Dental Instruments
Rio de Janeiro; s.n; 2019. 100 p. ilus, tab.
Thesis in Portuguese | LILACS | ID: biblio-1555783


A infecção congênita pelo vírus Zika (ICZ) produz um amplo espectro de complicações perinatais, destacando-se as anomalias estruturais. A associação de achados ultrassonográficos pré-natais (USO) com outros desfechos perinatais adversos, não foi descrita até o momento. Identificamos também um grupo de gestantes cujos conceptos apresentam anomalias estruturais suspeitas de ICZ, porém sem diagnóstico etiológico. Desenvolvemos duas linhas de trabalho. O primeiro trabalho teve como objetivo determinar se os resultados dos exames de ultrassom (USO) e dopplervelocimetria (doppler) realizados durante o pré-natal estavam associados a desfechos neonatais anormais em gestações afetadas pelo ZIKV. Desenho: recorte de um estudo de coorte prospectiva realizado em um único centro de referência no Rio de Janeiro, entre 01 de setembro de 2015 a 31 de maio de 2016, envolvendo 92 gestantes, portadoras de fetos únicos, infectadas pelo vírus ZIKV, com diagnóstico confirmado por exame de transcriptidase reversa aplicada à reação em cadeia da polimerase (RT-PCR). Medidas: como desfecho primário, utilizamos o resultado neonatal adverso composto (RNAC) (morte perinatal, achados anormais no exame neonatal ou achados anormais na neuroimagem pós-natal). Os desfechos secundários incluíram a associação de achados específicos com desfechos neonatais. Resultados: Entre as 92 gestantes e seus conceptos, 55 (60%) apresentaram resultados normais e 37 (40%) resultados anormais nos exames USO. Dos 45 recém-nascidos (RN) com RNAC, 23 (51%) apresentaram resultados normais ao USO. Onze gestantes (12%) apresentaram resultados anormais no exame neonatal (odds ratio ajustado [aOR], 11,6; IC 95%, 1,8-72,8), na neuroimagem pós-natal (aOR, 6,7, IC 95%, 1,1-38,9) e RNAC (aOR, 27,2; IC 95%, 2,5-296,6). Resultados anormais no doppler da artéria cerebral média foram associados a anormalidades do exame neonatal (aOR, 12,8; 95% CI, 2,6-63,2), na neuroimagem pós-natal (aOR, 8,8; IC 95%, 1,7-45,9) e no RNAC (aOR, 20,5; 95% CI, 3,2-132,6). Houve 2 mortes perinatais. Achados anormais no USO pré-natal tiveram uma sensibilidade de 48,9% (IC95%, 33,7%-64,2%) e uma especificidade de 68,1% (IC95%, 52,9%-80,1%) quando associados com os RNAC. Para um resultado normal no USO pré-natal, a sensibilidade foi menor (22,2%; IC95%, 11,2%-37,1%), mas a especificidade foi maior (97,9%; IC95%, 88,7%-99,9%). Conclusão: Resultados anormais nos exames de USO e doppler em gestantes infectadas pelo ZIKV, foram associados a RNAC. Resultados normais no USO pré-natal não estiveram associadas a um desfecho neonatal normal. Frente aos resultados encontrados, recomendamos avaliação completa para todos os RNs expostos ao ZIKV. O segundo trabalho objetivou analisar o comprometimento fetal, utilizando a amniocentese, em gestantes portadoras de fetos com alterações estruturais suspeitas ao USO de ICZ, sem diagnóstico prévio da etiologia. Desenho: estudo de casos que incluiu 16 pacientes. A exposição: amniocentese para realização de RT-PCR para toxoplasmose, ZIKV e citomegalovírus; foi também oferecido cariótipo fetal. Resultados: o exame detectou 7/9 (78%) casos de ICZ; 2 RNs foram diagnosticados após o nascimento. O diagnóstico etiológico foi realizado em 63% dos casos (10/16). Conclusão: a amniocentese foi uma importante ferramenta para diagnosticar ICZ, TORCH e aneuploidias, permitindo o aconselhamento parental adequado, e a programação da assistência perinatal.

Congenital infection with the Zika virus (ICZ) produces a broad spectrum of perinatal abnormalities, including structural defects. The association of prenatal ultrasonographic findings (USO) with adverse perinatal outcomes has not been described so far. We also identified a group of pregnant women whose concepts have structural abnormalities suspected of having ICZ, but without an etiological diagnosis. We have developed two lines of work: The aim of the first study was to determine if the results of ultrasound and Doppler examinations performed during prenatal care were associated with abnormal neonatal outcomes in pregnancies affected by ZIKV. Design: a prospective cohort study conducted in a single referral center in Rio de Janeiro, between September 1, 2015 and May 31, 2016, involving 92 pregnant women with single fetuses infected with the ZIKV virus, diagnosed confirmed by reverse transcriptase examination applied to the polymerase chain reaction (RT-PCR). Measurements: As a primary endpoint, we used composite adverse neonatal outcome (RNAC) (perinatal death, abnormal findings on neonatal examination or abnormal findings in postnatal neuroimaging). Secondary outcomes included the association of specific findings with neonatal outcomes. Results: Among the 92 pregnant women and their concepts, 55 (60%) presented normal results and 37 (40%) had abnormal results in USO exams. Of the 45 newborns (NB) with RNAC, 23 (51%) presented normal results to the USO. Eleven pregnant women (12%) presented abnormal results in the neonatal exam (adjusted odds ratio [aOR], 11.6, 95% CI, 1.8-72.8), postnatal neuroimaging (aOR, 6.7, CI 95%, 1,1-38,9) and RNAC (aOR, 27.2, 95% CI, 2.5-296.6). Doppler abnormalities of the middle cerebral artery were associated with abnormalities of the neonatal examination (aOR, 12.8, 95% CI, 2.6-63.2), postnatal neuroimaging (aOR, 8.8, 95% CI, , 1.7-45.9) and RNAC (aOR, 20.5, 95% CI, 3.2-132.6). There were 2 perinatal deaths. Abnormal findings in prenatal USO had a sensitivity of 48.9% (95% CI, 33.7% - 64.2%) and a specificity of 68.1% (95% CI, 52.9% - 80.1%) when associated with RNACs. For a normal result in prenatal USO, the sensitivity was lower (22.2%, 95% CI, 11.2% -37.1%), but the specificity was higher (97.9%, 95% CI, 88, 7% -99.9%), in relation to RNAC. Conclusion: Abnormal results in USO and Doppler tests in pregnant women infected with ZIKV were associated with neonatal adverse outcomes. Normal results in prenatal USO were not associated with a normal neonatal outcome. In view of the results found, we recommend a complete evaluation for all NBs exposed to ZIKV. The second study aimed to analyze the fetal impairment, using amniocentesis, in pregnant women with fetuses with structural alterations suspected by USO, without previous diagnosis of the etiology. Design: case study involving 16 patients. Exposure: amniocentesis for the realization of RT-PCR for toxoplasmosis, ZIKV and cytomegalovirus; fetal karyotype was also offered. Results: the examination detected 7/9 (78%) cases of ICZ; 2 RNs were diagnosed after birth. The etiological diagnosis was performed in 63% of the cases (10/16). Conclusion: amniocentesis was an important tool to diagnose ICZ, TORCH and aneuploidies, allowing adequate parental counseling, and programming perinatal care.

Humans , Female , Pregnancy , Infant, Newborn , Congenital Abnormalities/diagnostic imaging , Ultrasonography/methods , Laser-Doppler Flowmetry/methods , Perinatal Care , Zika Virus Infection , Amniocentesis/methods , Brazil , Cohort Studies , Infectious Disease Transmission, Vertical
Acta cir. bras ; 34(12): e201901203, 2019. graf
Article in English | LILACS | ID: biblio-1054686


Abstract Purpose Composite flaps used in reconstructive surgery may intra- and postoperatively suffer from hypoperfusion and/or ischemia-reperfusion influencing wound healing. We aimed to follow-up the effect of ischemia on adipocutaneous flaps' wound healing and microcirculation. Methods In anesthetized rats groin flaps were formed bilaterally. In Control group the flaps were repositioned and sutured back. In Ischemia-Reperfusion (I/R) group before repositioning and suturing the flap pedicles were clamped for 60 minutes. Laser Doppler (LD) fluxmetry and temperature probes were applied on the cranial, central and caudal flap regions before/after preparation and ischemia, re-suturing, and on the 1st-3rd-5th-7th-14th postoperative days, before the final examinations and biopsies for histology. Results Flaps' skin temperature quickly recovered after repositioning. LD values were lower in the I/R group, reaching a significant level by the 3rd postoperative day, and remained lowered till the 14th day. The magnitude of alterations differed in the flap regions. Histologically normal wound healing process was seen, except for some I/R flaps, where hypertrophized mammary glands were found. Conclusions Short-term ischemia could influence flap microcirculation and wound healing, and may result in hypertrophized mammary glands. Laser Doppler could be used to evaluate intra- and postoperative microcirculatory changes and may have significance in predicting complications.

Animals , Male , Rats , Skin/blood supply , Wound Healing/physiology , Reperfusion Injury/complications , Dermatologic Surgical Procedures/adverse effects , Myocutaneous Flap/blood supply , Microcirculation/physiology , Postoperative Period , Reference Values , Skin/pathology , Time Factors , Biopsy , Body Temperature , Reperfusion Injury/pathology , Reproducibility of Results , Treatment Outcome , Laser-Doppler Flowmetry , Disease Models, Animal , Myocutaneous Flap/pathology
Rev. medica electron ; 40(6): 2030-2052, nov.-dic. 2018.
Article in Spanish | LILACS, CUMED | ID: biblio-978716


RESUMEN El bajo peso al nacer representa en la actualidad uno de los problemas prioritarios de salud a nivel mundial, que aumenta el riesgo de morbimortalidad. Cuba presenta cifras bajas de bajo peso al nacer lo que la ubica entre los cinco países con indicadores más bajos a nivel mundial, pero a pesar de ello, el bajo peso al nacer, específicamente la restricción del crecimiento intrauterino constituye un problema de salud por las complicaciones que produce, por lo que su predicción precoz es vital para evitar la muerte. Por tal motivo los autores proponen como objetivo exponer los referentes teóricos relacionados con el valor predictivo de la flujometría doppler en la restricción del crecimiento intrauterino, basándose en los fundamentos teóricos más actualizados. Se concluye que la flujometría doppler combinada de las arterias uterinas y umbilicales, tiene valor predictor en la restricción del crecimiento intrauterino y en su manejo y seguimiento (AU).

ABSTRACT Low weight at birth is currently one of the priority health problems around the world, increasing the morbi-mortality risk. Cuba shows little quantities of low weight at birth, locating the country among the five ones with the lowest indicators in the world; nevertheless, low weight at birth, specifically the intrauterine growth restriction arises as a health problem due to the complications it produces, making its precocious prediction vital to avoid death. The authors of this work have the objective of exposing theoretical referents related with the predictive value of the Doppler flowmetry in the restriction of the intrauterine growth on the bases of updated theoretical fundaments. They arrive to the conclusion that combined Doppler flowmetry of the uterine and umbilical arteries has a predictive value in the restriction of intrauterine growth and its management and follow up (AU).

Humans , Female , Pregnancy , Pregnancy Complications , Infant, Low Birth Weight , Predictive Value of Tests , Morbidity , Laser-Doppler Flowmetry , Pregnancy, High-Risk , Fetal Growth Retardation/prevention & control , Umbilical Arteries , Infant Mortality , Uterine Artery , Fetal Growth Retardation/diagnosis
Acta cir. bras ; 33(7): 597-608, July 2018. graf
Article in English | LILACS | ID: biblio-949363


Abstract Purpose: To compare early- and late-effect remote ischemic preconditioning (RIPC) by analysing the microcirculatory, hemodynamic and histological changes in partial liver ischemia-reperfusion of rats. Methods: 60-minute partial liver ischemia followed by 120-minute reperfusion was performed without (Control group, n=7) or with preconditioning. In RIPC groups a tourniquet was applied around the left thigh using 3 cycles of 10-minute ischemia/10-minute reperfusion, one (RIPC-1, n=7) or twenty-four hours (RIPC-24, n=7) before I/R. Hemodynamic and microcirculatory measurements were performed before and after ischemia and in 30th, 60th and 120th minute of reperfusion and histological examination at the end of reperfusion. Results: Blood pressure decreased in all groups followed by biphasic changes in Control group. In RIPC groups R120 values returned almost to normal. Heart rate increased in Control and RIPC-1 groups at R120, while RIPC-24 did not show significant changes. Microcirculation of non-ischemic liver stayed constant in Control and showed significant changes in RIPC-24 group, while in ischemic liver elevated by R120 in all groups. RIPC didn't reduce histological alterations. Conclusion: Considering the survival and the results, both remote ischemic preconditioning protocols had beneficial effect in hepatic ischemia-reperfusion, however the histopathological findings were controversial.

Animals , Rats , Reperfusion Injury/prevention & control , Ischemic Preconditioning/methods , Ischemia/prevention & control , Liver/blood supply , Microcirculation/physiology , Temperature , Time Factors , Blood Pressure/physiology , Random Allocation , Reproducibility of Results , Treatment Outcome , Laser-Doppler Flowmetry , Disease Models, Animal , Respiratory Rate/physiology , Liver/pathology
Rev. cuba. med. gen. integr ; 34(2)abr.-jun. 2018. tab
Article in Spanish | LILACS, CUMED | ID: biblio-1093433


Introducción: La flujometría doppler constituye un método de control y evaluación para determinar la culminación de la gestación, permite entender de una mejor manera la dinámica fetoplacetaria lo que posibilita evitar todo riesgo que pueda dañar la maduración fetal, y a su vez la prematuridad, bajo peso al nacer y patologías de la preeclampsia. Objetivo: Determinar la utilidad de la flujometría doppler color, en el diagnóstico y manejo de la restricción de crecimiento intrauterino en embarazadas preeclámpticas. Métodos: Se realizó un estudio no experimental, transversal, de tipo descriptivo comparativo en el departamento de ecografía de la clínica Bolívar, Babahoyo - Ecuador durante el año 2013. Participaron 96 mujeres gestantes en edades entre 15 a 40 años, a las que se le realizó las intervenciones: Flujometría doppler, prueba de índice cerebro placentario, arteria cerebral media/arteria umbilical; para el análisis se emplearon los indicadores descriptivos entre las variables. Resultados: La prueba de índice cerebro placentario fue descompensada en el 53,1 por ciento de las mujeres, el volumen de líquido amniótico estuvo disminuido en el 46,9 por ciento, y la edad gestacional más vulnerable fue de las 32 a las 37 semanas de gestación. Conclusiones: La flujometría doppler con la prueba índice cerebro placentario es un indicador efectivo y seguro de bienestar fetal cuando esta prueba es normal, y un predictor de resultado adverso, así como un marcador de hipoxia fetal cuando está alterado, convirtiéndose en una herramienta útil para la decisión de interrumpir la gestación cuando la salud del feto está en peligro, o de mantener el embarazo cuando su comportamiento es normal(AU)

Humans , Female , Pregnancy , Laser-Doppler Flowmetry/instrumentation , Pre-Eclampsia/diagnosis , Epidemiology, Descriptive , Cross-Sectional Studies
Acta cir. bras ; 33(4): 296-305, Apr. 2018. tab, graf
Article in English | LILACS | ID: biblio-886282


Abstract Purpose: To evaluate the effect of the cilostazol on the evolution of partially avulsed flaps, using experimental model of cutaneous degloving in rat limbs. Methods: A controlled and randomized experimental study was carried out in which the blood flow and the percentage of flap necrosis were evaluated. We compared the study group, which received cilostazol, and the control group, which received enteral saline solution in the postoperative period. The blood flow in the flap was evaluated through Laser Doppler flowmetry, and a planimetry using the IMAGE J® software was employed for the calculation of the area of necrosis. Results: Enteral administration of cilostazol was associated with a higher mean blood flow in all regions of the flap, with a statistically significant difference in the proximal and middle regions (p<0.001) and a lower percentage of necrotic area in the flap (p<0.001). Conclusion: Postoperative enteral administration of cilostazol increased blood flow and decreased the total area of necrosis of avulsed cutaneous flaps of rat limbs.

Humans , Animals , Male , Tetrazoles/therapeutic use , Disease Models, Animal , Phosphodiesterase 3 Inhibitors/therapeutic use , Degloving Injuries/drug therapy , Reference Values , Regional Blood Flow/drug effects , Surgical Flaps , Tetrazoles/pharmacology , Time Factors , Random Allocation , Reproducibility of Results , Treatment Outcome , Rats, Wistar , Laser-Doppler Flowmetry , Lower Extremity/blood supply , Lower Extremity/injuries , Lower Extremity/pathology , Phosphodiesterase 3 Inhibitors/pharmacology , Degloving Injuries/surgery , Degloving Injuries/pathology , Necrosis/drug therapy
Braz. j. med. biol. res ; 51(3): e6601, 2018. tab, graf
Article in English | LILACS | ID: biblio-889041


The primary aim of this study was to evaluate penile endothelial microvascular function in patients with primary arterial hypertension and age-matched normotensive subjects using laser speckle contrast imaging (LSCI). Additionally, we analyzed the acute penile microvascular effects induced by oral phosphodiesterase type 5 inhibitor (sildenafil; SIL) administration. Endothelium-dependent microvascular reactivity was evaluated in the penises and forearms of hypertensive patients (aged 58.8±6.6 years, n=34) and age-matched healthy volunteers (n=33) at rest and 60 min following oral SIL (100 mg) administration. LSCI was coupled with cutaneous acetylcholine (ACh) iontophoresis using increasing anodal currents. Basal penile cutaneous vascular conductance (CVC) values were not significantly different between control subjects and hypertensive individuals. Penile CVC values increased significantly after SIL administration in control (P<0.0001) and hypertensive (P<0.0001) subjects. Peak CVC values were not different between the two groups during penile ACh iontophoresis before SIL administration (P=0.2052). Peak CVC values were higher in control subjects than in hypertensive subjects after SIL administration (P=0.0427). Penile endothelium-dependent microvascular function is, to some extent, preserved in patients presenting with primary arterial hypertension under effective anti-hypertensive treatment. LSCI may be a valuable non-invasive tool for the evaluation of penile vascular responses to phosphodiesterase type 5 inhibitor.

Humans , Male , Middle Aged , Aged , Endothelium, Vascular/physiopathology , Hypertension/physiopathology , Penis/blood supply , Phosphodiesterase 5 Inhibitors/administration & dosage , Sildenafil Citrate/administration & dosage , Case-Control Studies , Healthy Volunteers , Laser-Doppler Flowmetry/methods , Microcirculation , Penis/drug effects , Regional Blood Flow , Vasodilation/drug effects
Rev. Col. Bras. Cir ; 45(4): e1837, 2018. tab, graf
Article in Portuguese | LILACS | ID: biblio-956572


RESUMO Objetivo: avaliar, através de dopplerfluxometria, de venografia, de histologia e de evolução clínica, o uso de enxertos tubulares de biopolímero de cana-de-açúcar (BP) na reconstrução de veias femorais em cães. Métodos: oito cães adultos foram submetidos à reconstrução de veia femoral, à esquerda com enxerto tubular de BP e à direita com veia autóloga. No período pós-operatório, os animais foram submetidos à avaliação clínica e dopplerfluxometria das veias femorais. Após 360 dias, os cães foram reoperados e submetidos à flebografia das veias femorais com contraste iodado. Os segmentos das veias femorais contendo os enxertos foram retirados e enviados para avaliação histopatológica. Resultados: os cães não apresentaram hemorragia, hematoma, infecção da ferida operatória ou edema dos membros operados. Um animal apresentou dilatação venosa superficial na região inguinal esquerda. A flebografia realizada 360 dias após a primeira cirurgia demonstrou que três (37,5%) enxertos de BP e sete (87,5%) do grupo controle (C) estavam pérvios. Na avaliação histopatológica foi encontrada uma reação inflamatória com neutrófilos e linfócitos na superfície externa de ambos os grupos. Na camada íntima de revestimento dos enxertos e na camada externa nos dois grupos, foi encontrada fibrose. Conclusão: com base nos resultados obtidos com o modelo experimental utilizado, conclui-se que a BP apresenta potencial para ser utilizado como enxerto tubular para revascularização venosa, porém novas pesquisas precisam ser realizadas para confirmar a sua eficácia na revascularização de veias de médio e grande calibre, o que poderia permitir o seu uso na prática clínica.

ABSTRACT Objective: to evaluate, through Doppler flowmetry, venography, histology and clinical evolution, the use of sugarcane biopolymer (BP) tubular grafts in the reconstruction of femoral veins in dogs. Methods: we submitted eight adult dogs to femoral vein reconstruction, on the left with BP tubular graft and on the right with autologous vein. In the postoperative period, the animals underwent clinical evaluation and femoral vein Doppler flowmetry. After 360 days, we reoperated the dogs and submitted them to femoral vein phlebography with iodinated contrast. We removed the segments of the femoral veins containing the grafts and sent them for histopathological evaluation. Results: the dogs did not present hemorrhage, hematoma, surgical wound infection or operated limb edema. One animal had superficial venous dilatation in the left inguinal region. Phlebography performed 360 days after the first surgery showed that three (37.5%) BP grafts and seven (87.5%) grafts from the control group (C) were patent. In the histopathological evaluation, we found an inflammatory reaction, with neutrophils and lymphocytes on the external surface of both groups. In the intimal layer of the grafts and in the outer layer in the two groups, we observed fibrosis. Conclusion: based on the results obtained with the experimental model used, BP presents potential to be used as a tubular graft for venous revascularization. However, new research must be performed to confirm its efficacy in the revascularization of medium and large diameter veins, which could allow its use in clinical practice.

Animals , Male , Female , Dogs , Bioprosthesis , Blood Vessel Prosthesis , Blood Vessel Prosthesis Implantation/methods , Femoral Vein/transplantation , Vascular Grafting/methods , Transplantation, Autologous/methods , Biopolymers/therapeutic use , Random Allocation , Laser-Doppler Flowmetry , Blood Vessel Prosthesis Implantation/instrumentation , Plastic Surgery Procedures/methods , Models, Animal , Saccharum , Femoral Vein/pathology
Rev. bras. ginecol. obstet ; 39(9): 464-470, Sept. 2017. tab
Article in English | LILACS | ID: biblio-898900


Abstract Objective To describe the blood flow velocities and impedance indices changes in the uterine arteries of leiomyomatous uteri using Doppler sonography. Methods This was a prospective, case-control study conducted on 140 premenopausal women with sonographic diagnosis of uterine leiomyoma and 140 premenopausal controls without leiomyomas. Pelvic sonography was performed to diagnose and characterize the leiomyomas. The hemodynamics of the ascending branches of both main uterine arteries was assessed by Doppler interrogation. Statistical analysis was performed mainly using non-parametric tests. Results The median uterine volume of the subjects was 556 cm3, while that of the controls was 90.5 cm3 (p < 0.001). The mean peak systolic velocity (PSV), end-diastolic velocity (EDV), time-averaged maximum velocity (TAMX), time-averaged mean velocity (Tmean), acceleration time (AT), acceleration index (AI), diastolic/systolic ratio (DSR), diastolic average ratio (DAR), and inverse pulsatility index (PI) were significantly higher in the subjects (94.2 cm/s, 29.7 cm/s, 49.1 cm/s, 25.5 cm/s, 118 ms, 0.8, 0.3, 0.6, and 0.8 respectively) compared with the controls (54.2 cm/s, 7.7 cm/s, 20.0 cm/s, 10.0 cm/s, 92.0 ms, 0.6, 0.1, 0.4, and 0.4 respectively); p < 0.001 for all values. Conversely, the mean PI, resistivity index (RI), systolic/diastolic ratio (SDR) and impedance index (ImI) of the subjects (1.52, 0.70, 3.81, and 3.81 respectively) were significantly lower than those of the controls (2.38, 0.86, 7.23, and 7.24 respectively); p < 0.001 for all values. Conclusion There is a significantly increased perfusion of leiomyomatous uteri that is most likely due to uterine enlargement.

Resumo Objetivo Descrever as velocidades do fluxo sanguíneo e as alterações dos índices de impedância nas artérias uterinas leiomiomatoso utilizando a ultrassonografia Doppler. Métodos Estudo prospectivo, caso-controle, realizado em 140 mulheres pré-menopáusicas com diagnóstico ultrassonográfico de leiomioma uterino e em 140 controles na pré-menopausa sem leiomiomas. A ultrassonografia pélvica foi realizada para diagnosticar e caracterizar os leiomiomas. A hemodinâmica dos ramos ascendentes de ambas as artérias uterinas principais foi avaliada por meio de interrogatório Doppler. A análise estatística foi feita principalmente por meio de testes não paramétricos. Resultados A média do volume uterino dos das pacientes foi de 556 cm3, enquanto a dos controles foi de 90,5 cm3 (p < 0,001). A média de velocidade de pico sistólico (VPS), a velocidade diastólica final (VDF), a velocidade máxima do tempo médio (VMTM), a velocidade média do tempo médio (VMdTM), o tempo de aceleração (TA), o índice de aceleração (IA), a relação diástole/sístole (RDS), a proporção diastólica média (PDM) e o índice de pulsatilidade (IP) inversa foram significativamente maiores em pacientes (94,2 cm/s, 29,7 cm/s, 49,1 cm/s, 25,5 cm/s, 118 ms, 0,8, 0,3, 0,6 e 0,8, respectivamente) do que nos controles (54,2 cm/s, 7,7 cm/s, 20,0 cm/s, 10,0 cm/s, 92,0 ms, 0,6, 0,1, 0,4 e 0,4, respectivamente); p < 0,001 para todos os valores. Por outro lado, o IPmédio, o índice de resistividade (IR), a relação sístole/diástole (RSD) e o índice de impedância (II) nas pacientes (1,52, 0,70, 3,81 e 3,81, respectivamente) foram significativamente mais baixos do que os dos controles (2,38, 0,86, 7,23 e 7,24, respectivamente); p < 0,001 para todos os valores. Conclusão Existe um aumento significativo da perfusão dos úteros leiomiomatosos, que provavelmente se deve ao alargamento uterino.

Humans , Female , Adult , Uterine Neoplasms/blood supply , Uterine Neoplasms/diagnostic imaging , Laser-Doppler Flowmetry , Uterine Artery/diagnostic imaging , Leiomyoma/blood supply , Leiomyoma/diagnostic imaging , Case-Control Studies , Prospective Studies , Ultrasonography, Doppler
Rev. méd. Hosp. José Carrasco Arteaga ; 9(2): 195-198, Julio 2017. Cuadros
Article in Spanish | LILACS | ID: biblio-1015813


INTRODUCCIÓN: La enfermedad hemolítica perinatal causada principalmente por la producción de anticuerpos irregulares anti D, es una enfermedad que por mucho tiempo fue de etiología y pronóstico desconocido, en la actualidad un manejo oportuno ha aumentado las expectativas de sobrevida. CASO CLÍNICO: Paciente femenino de 27 años de edad, multípara 1, embarazo de 27+1 semanas de gestación, RH negativo sensibilizada con Rogham después de postparto anterior, anemia fetal y diagnóstico reciente de diabetes gestacional. Los exámenes de laboratorio mostraron la velocidad máxima del flujo de la arteria cerebral media fuera de rangos normales, se hospitalizó para cordocentesis y transfusión intraútero. EVOLUCIÓN: Se realizó transfusión intrauterina, se evidenciaron parámetros normales, y se controló bisemanalmente. A las 29+1 semanas se realizó una segunda transfusión intrauterina, a las 33+4 semanas de gestación y durante control de rutina, se detectó por tercera vez aumento de la velocidad máxima del flujo de la arteria cerebral media, se interrumpió la gestación, se obtuvo recién nacido (RN) de sexo masculino, peso 2130 gramos, APGAR 6-8. CONCLUSIÓN: El uso de la velocidad máxima del flujo de la arteria cerebral media nos ayuda a realizar un diagnóstico certero no invasivo y un tratamiento oportuno de enfermedad hemolítica perinatal. Las transfusiones intrauterinas, lograron prolongar el embarazo por un periodo de 6 semanas, permitiendo un incremento de peso cercano a los mil gramos, desde el diagnóstico de nemia severa hasta su resolución.(au)

BACKGROUND: The Hemolytic Perinatal Disease is a disease unknown etiology and prognosis, actually a timely management has increased expectations of survival, is caused by the production of irregular antibodies anti D. CASE REPORT: 27-year-old female patient, multiparous 1, pregnancy of 27 + 1 weeks of gestation, RH negative sensitized with Rogham after postpartum, fetal anemia and recent diagnosis of gestational diabetes. Laboratory tests show maximum speed of the middle cerebral artery outside normal ranges, it was decided to hospitalize for cordocentesis and intrauterine transfusion. EVOLUTION: Intrauterine transfusion was performed, normal parameters were evident, and it was monitored biweekly. At 29 + 1 weeks, a second intrauterine transfusion was performed, at 33 + 4 weeks of gestation and during routine control, a third time increase of maximum speed of the middle cerebral artery was detected, gestation was interrupted, newborn male, weight 2130 grams, APGAR 6-8. CONCLUSION: The use of maximum speed of the middle cerebral artery helps us to make an accurate non-invasive diagnosis and timely treatment of the hemolytic perinatal disease. Intrauterine transfusions were able to prolong the pregnancy for a period of 6 weeks, allowing a weight increase of around one thousand grams, from the diagnosis of severe anemia to its resolution.(AU)

Humans , Female , Pregnancy , Rh Isoimmunization/prevention & control , Laser-Doppler Flowmetry , Perinatal Care , Blood Transfusion, Intrauterine , Cordocentesis
Rev. ADM ; 73(5): 241-244, sept.-oct. 2016.
Article in Spanish | LILACS | ID: biblio-835301


El efecto Doppler es la base científica de la flujometría láser Doppler. El efecto fue descrito por primera vez en el año de 1842 por el físico austriaco Christian Doppler en su tratado Über das farbige licht der doppelsterne und einige andere gestirne des himmels (Sobre el color de la luz en estrellas binarias y otros astros). Este principio ha permitido desarrollar técnicas y aparatos que han sido empleados en el ramo médico para medir la perfusión en diversos órganos y tejidos del cuerpo, y que han sido útiles como método diagnóstico. En la odontología, poco a poco comienza a reportarse información acerca del uso del Doppler en las diversas estructuras bucodentales, y ha demostrado ser no invasivo y de gran utilidad diagnóstica. Son pocos los estudios reportados en la rama de la odontología en cuanto a esta nueva tecnología; es importante comenzar líneas de investigación apoyadas en ella para beneficio de los pacientes.

The Doppler eff ect, the scientifi c basis of laser Doppler fl owmetry, wasfi rst described in 1842 by Austrian physicist Christian Doppler in histreatise Über das farbige Licht der doppelsterne und einige andere gestirnedes Himmels (On the Colored Light of the Binary Stars and SomeOther Stars of the Heavens). This principle has led to the developmentof techniques and devices that have been used in the fi eld of medicineto measure perfusion in various organs and tissues, and have provideda useful method of diagnosis. In dentistry, information on the use ofthis method in the various structures of the mouth has slowly begunto be published. As a result, the need for its continued use in the fi eldof oral health has become evident, given that it has proven to be noninvasiveand extremely useful in diagnosis. It is a diagnostic technique that is commonly used in healthcare and has been widely developedin the fi eld of medicine, yet there have been few reported studies of it suse in dentistry, which is an important step towards opening new linesof research based on this new technology for the benefi t of patients.

Humans , Laser-Doppler Flowmetry/standards , Laser-Doppler Flowmetry/trends , Dentistry/trends , Wound Healing/radiation effects , Tooth/radiation effects , Tooth Fractures/diagnosis , Technology, Dental/trends , Mouth Mucosa/radiation effects