Thesis (M.D.)--Boston University

Thesis (M.S.)--University of Michigan, Ann Arbor, 1983. / Typescript (photocopy). Includes bibliographical references (leaves 93-104). Also issued in print.

Thesis (M.S.)--University of Michigan, Ann Arbor, 1983. / Typescript (photocopy). eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 93-104).

Chronic ventricular sympathectomy elicits changes in the coronary circulation, myocardial oxygen consumption and size of infarction resulting fromcoronary occlusion. These changes indicate a change occurring in the basic metabolism of the heart in response to the removal of its sympathetic nervous input. This hypothesis was tested using two groups of dogs, a shamoperated control and a ventricular sympathectomized group. The sympathectomy procedure was an intrapericardial surgical technique which selectively removes ventricular sympathetic input. Four weeks after surgery, left ventricular tissue samples were obtained and rapidly frozen to -80°C. Selected metabolic variables were then compared between the two groups.

UA Open Access Publishing Fund / Resistant hypertension is associated with chronic activation of the sympathetic nervous system resulting in various comorbidities. The prevalence of resistant hypertension is often under estimated due to various reasons. Activation of sympathetic nervous system at the renal- as well as systemic- level contributes to the increased level of catecholamines and resulting increase in the blood pressure. This increased activity was demonstrated by increased muscle sympathetic nerve activity and renal and total body noradrenaline spillover. Apart from the hypertension, it is hypothesized to be associated with insulin resistance, congestive heart failure and obstructive sleep apnea. Renal denervation is a novel procedure where the sympathetic afferent and efferent activity is reduced by various techniques and has been used successfully to treat drug-resistant hypertension improvement of various metabolic derangements. Renal denervation has the unique advantage of offering the denervation at the renal level, thus mitigating the systemic side effects. Renal denervation can be done by various techniques including radiofrequency ablation, ultrasound guided ablation and chemical ablation. Various trials evaluated the role of renal denervation in the management of resistant hypertension and have found promising results. More studies are underway to evaluate the role of renal denervation in patients presenting with resistant hypertension in different scenarios. Appropriate patient selection might be the key in determining the effectiveness of the procedure.

Introdução: Atualmente, a simpatectomia torácica videoassistida tornou-se o tratamento de escolha para hiperidrose palmar. O principal efeito colateral após operação é a hiperidrose compensatória (HC), sendo considerada a maior causa de insatisfação pelos pacientes. Objetivo: Comparar os resultados obtidos com a simpatectomia torácica videotoracoscópica realizada em dois níveis ganglionares distintos (terceiro versus quarto gânglio torácico) no tratamento da hiperidrose palmo-plantar, por meio de um ensaio clínico randomizado e cego. Método: Foram selecionados 40 pacientes entre fevereiro de 2007 e maio de 2009. Os participantes foram aleatorizados em dois grupos de 20 pacientes (G3 e G4) e submetidos à operação com seguimento de 12 meses (1ª semana, 1° mês, 6° mês e 12° mês). Utilizamos um método objetivo para mensuração do suor, aferindo a TEWL (transepidermal water loss) pelo VapoMeter, além da avaliação da qualidade de vida antes e após a operação. Também foram estudados: resolução da hiperidrose palmar, incidência e intensidade da HC. Resultados: Todos os pacientes apresentaram resolução da hiperidrose palmar após a operação, com diferença estatística em relação ao fator tempo, quando comparados os valores da TEWL palmar no pré-operatório com os seus respectivos valores na 1ª semana, 1° mês, 6° mês e 12° mês. O principal efeito colateral observado foi a hiperidrose compensatória, incidindo com maior frequência no grupo G3 após 12 meses de seguimento; apesar disto, não houve diferença estatística em relação à intensidade (gravidade) da HC nos grupos estudados. Verificou-se melhora da qualidade de vida desde a primeira avaliação do pós-operatório, sem diferença entre os grupos, que assim se manteve até o fim do estudo. As regiões mais acometidas pela HC foram dorso, tórax, abdome e coxas; no entanto, não houve diferença estatística da TEWL mensurada nessas regiões após 12 meses de acompanhamento. Conclusão: Ambas as técnicas foram efetivas no tratamento da hiperidrose palmar, gerando redução objetiva da TEWL independente do gânglio operado. A simpatectomia no nível de G3 apresentou maior incidência de HC; apesar disso, a melhora da qualidade de vida foi similar em ambos os grupos, não existindo diferença significativa da TEWL quantificada no dorso, abdome, coxas e pés após 12 meses / Introduction: Currently, video-assisted thoracic sympathectomy has become the preferred treatment for palmar hyperhidrosis. The main side effect after surgery remains compensatory hyperhidrosis (CH), considered the major cause of dissatisfaction for patients. Objective: To compare the results obtained of video-assisted sympathectomy performed on two distinct ganglion levels (third versus fourth thoracic ganglion) in the treatment of palmo-plantar hyperhidrosis, through a blind randomized clinical trial. Method: We selected 40 patients from February 2007 to May 2009. All participants were randomized into two groups of 20 patients (G3 and G4) and underwent the operation, being followed for 12 months (1 week, 1 month, 6 months and 12th month). We used an objective method for measuring sweat, checking the \"TEWL (transepidermal water loss) measured by the\"VapoMeter\", and evaluated the quality of life before and after the operation. Also studied were: palmar hyperhidrosis, incidence and intensity of the CH. Results: All patients ceased suffering from palmar hyperhidrosis after surgery, with statistical difference regarding the time factor when we compared the values of \"TEWL\" palmar preoperatively with their respective values at 1 week, 1 month, 6 months and 12th month. The main side effect observed was compensatory sweating, most frequent in G3 after 12 months of follow-up; despite this, there was no statistical difference regarding the intensity (severity) of CH in both groups. There was an improvement in quality of life since the first evaluation of the postoperative period, with no difference between groups, and so it remained until the end of follow-up. The areas most affected by CH were back, chest, abdomen and thighs; however, there was no statistical difference in the \"TEWL\" measured in these areas after 12 months of follow-up. Conclusion: Both techniques were effective in the treatment of palmar hyperhidrosis, generating objective reduction of \"TEWL\" regardless of the ganglion operated. Sympathectomy G3 had a higher incidence of CH, yet the improvement in quality of life was similar in both groups without significant differences of \"TEWL\" quantified on the back, abdomen, thighs and legs after 12 months of follow up

INTRODUÇÃO: O nível ótimo de simpatectomia para a hiperidrose palmar seria aquele que resultasse na definitiva desnervação simpática da palma da mão com mínima intensidade de hiperidrose compensatória. OBJETIVOS: Comparar duas técnicas cirúrgicas (níveis de desnervação) de simpatectomia por videotoracoscopia para tratamento da hiperidrose palmar ou palmo-plantar a curto e médio prazo. MÉTODOS: De maio de 2003 a junho de 2006, 60 pacientes com hiperidrose palmar foram prospectivamente randomizados para a simpatectomia por videotoracoscopia nos níveis do gânglio T2 ou T3. Foram acompanhados pelo período médio de 20 meses avaliando-se: a resolução da hiperidrose palmar; a incidência e a intensidade da hiperidrose compensatória; sua evolução durante o estudo; e a qualidade de vida dos pacientes. RESULTADOS: 59 pacientes apresentaram resolução da hiperidrose palmar. Uma falha terapêutica ocorreu no grupo T3. A maioria dos pacientes apresentou melhora da hiperidrose plantar sem diferença entre os grupos. Após 20 meses, todos os pacientes de ambos os grupos apresentavam algum grau de hiperidrose compensatória, mas com menor intensidade no grupo T3 (p=0,007). A HC desenvolveu-se na maioria dos pacientes no primeiro mês do pós-operatório, com incidência e intensidade estáveis com o passar do tempo. Verificou-se melhora da qualidade de vida desde a primeira avaliação de pós-operatório, sem diferença em nenhum dos grupos, e assim se manteve até o fim do seguimento. CONCLUSÕES: Ambas as técnicas são efetivas para tratar a hiperidrose palmar. A complicação mais frequente foi a hiperidrose compensatória, que cronologicamente apresentou incidência e intensidade estáveis durante o estudo. A simpatectomia no nível T3 apresentou menor intensidade de HC, mas, apesar disso, a melhora da qualidade de vida foi similar em ambos os grupos. / INTRODUCTION:The optimum level for sympathectomy to treat palmar hyperhidrosis would be the level that produced definitive sympathetic denervation of the palm of the hand with minimal compensatory hyperhidrosis. OBJECTIVE: To compare two surgical techniques (denervation levels) of sympathectomy using video-assisted thoracoscopy to treat palmar or palmar-plantar hyperhidrosis for short and medium-term. METHODS: From May 2003 to June 2006, 60 patients with palmar hyperhidrosis were prospectively randomized for video-assisted thoracoscopic sympathectomy at the T2 or T3 ganglion level. They were followed up for a mean of 20 months and were evaluated regarding their degree of improvement of palmar hyperhidrosis; incidence and severity of compensatory hyperhidrosis and its evolution over time; and quality of life. RESULTS: Fifty-nine cases presented resolution of the palmar hyperhidrosis. One case of therapeutic failure occurred in the T3 group. Most of the patients presented an improvement in plantar hyperhidrosis, without any difference between the groups. Twenty months later, all of the patients in both groups presented some degree of compensatory hyperhidrosis, but with less severity in the T3 group (p = 0.007). Compensatory hyperhidrosis developed in most patients during the first month after the operation, with incidence and severity that remained stable over time. An improvement in quality of life was seen, starting from the first postoperative evaluation, but without any difference between the groups. This was maintained until the end of the follow-up. CONCLUSION: Both techniques were effective for treating palmar hyperhidrosis. The most frequent complication was compensatory hyperhidrosis, which presented stable incidence and severity over the study period. Sympathectomy at the T3 level presented compensatory hyperhidrosis of less severity. Nevertheless, the improvement in quality of life was similar between the groups.

Introdução: Atualmente, a simpatectomia torácica videoassistida tornou-se o tratamento de escolha para hiperidrose palmar. O principal efeito colateral após operação é a hiperidrose compensatória (HC), sendo considerada a maior causa de insatisfação pelos pacientes. Objetivo: Comparar os resultados obtidos com a simpatectomia torácica videotoracoscópica realizada em dois níveis ganglionares distintos (terceiro versus quarto gânglio torácico) no tratamento da hiperidrose palmo-plantar, por meio de um ensaio clínico randomizado e cego. Método: Foram selecionados 40 pacientes entre fevereiro de 2007 e maio de 2009. Os participantes foram aleatorizados em dois grupos de 20 pacientes (G3 e G4) e submetidos à operação com seguimento de 12 meses (1ª semana, 1° mês, 6° mês e 12° mês). Utilizamos um método objetivo para mensuração do suor, aferindo a TEWL (transepidermal water loss) pelo VapoMeter, além da avaliação da qualidade de vida antes e após a operação. Também foram estudados: resolução da hiperidrose palmar, incidência e intensidade da HC. Resultados: Todos os pacientes apresentaram resolução da hiperidrose palmar após a operação, com diferença estatística em relação ao fator tempo, quando comparados os valores da TEWL palmar no pré-operatório com os seus respectivos valores na 1ª semana, 1° mês, 6° mês e 12° mês. O principal efeito colateral observado foi a hiperidrose compensatória, incidindo com maior frequência no grupo G3 após 12 meses de seguimento; apesar disto, não houve diferença estatística em relação à intensidade (gravidade) da HC nos grupos estudados. Verificou-se melhora da qualidade de vida desde a primeira avaliação do pós-operatório, sem diferença entre os grupos, que assim se manteve até o fim do estudo. As regiões mais acometidas pela HC foram dorso, tórax, abdome e coxas; no entanto, não houve diferença estatística da TEWL mensurada nessas regiões após 12 meses de acompanhamento. Conclusão: Ambas as técnicas foram efetivas no tratamento da hiperidrose palmar, gerando redução objetiva da TEWL independente do gânglio operado. A simpatectomia no nível de G3 apresentou maior incidência de HC; apesar disso, a melhora da qualidade de vida foi similar em ambos os grupos, não existindo diferença significativa da TEWL quantificada no dorso, abdome, coxas e pés após 12 meses / Introduction: Currently, video-assisted thoracic sympathectomy has become the preferred treatment for palmar hyperhidrosis. The main side effect after surgery remains compensatory hyperhidrosis (CH), considered the major cause of dissatisfaction for patients. Objective: To compare the results obtained of video-assisted sympathectomy performed on two distinct ganglion levels (third versus fourth thoracic ganglion) in the treatment of palmo-plantar hyperhidrosis, through a blind randomized clinical trial. Method: We selected 40 patients from February 2007 to May 2009. All participants were randomized into two groups of 20 patients (G3 and G4) and underwent the operation, being followed for 12 months (1 week, 1 month, 6 months and 12th month). We used an objective method for measuring sweat, checking the \"TEWL (transepidermal water loss) measured by the\"VapoMeter\", and evaluated the quality of life before and after the operation. Also studied were: palmar hyperhidrosis, incidence and intensity of the CH. Results: All patients ceased suffering from palmar hyperhidrosis after surgery, with statistical difference regarding the time factor when we compared the values of \"TEWL\" palmar preoperatively with their respective values at 1 week, 1 month, 6 months and 12th month. The main side effect observed was compensatory sweating, most frequent in G3 after 12 months of follow-up; despite this, there was no statistical difference regarding the intensity (severity) of CH in both groups. There was an improvement in quality of life since the first evaluation of the postoperative period, with no difference between groups, and so it remained until the end of follow-up. The areas most affected by CH were back, chest, abdomen and thighs; however, there was no statistical difference in the \"TEWL\" measured in these areas after 12 months of follow-up. Conclusion: Both techniques were effective in the treatment of palmar hyperhidrosis, generating objective reduction of \"TEWL\" regardless of the ganglion operated. Sympathectomy G3 had a higher incidence of CH, yet the improvement in quality of life was similar in both groups without significant differences of \"TEWL\" quantified on the back, abdomen, thighs and legs after 12 months of follow up

Objectives: Patients with hyperhidrosis suffer from an extreme perspiration that cannot be aligned with natural or situ- ational standards. Endoscopic sympathectomy is a meaningful option for palmar and axillary hyperhidrosis. A stan- dardized method of monitoring the immediate intraoperative success has not been established yet. The presented investigation shows one proposed sollution by monitoring skin surface temperature. The main aspect is to demonstrate a sig- nificant rise in temperature with utility for monitoring the immediate success of surgery. Methods: Twenty patients with primary hyperhidrosis were observed and treated in a standardized setting against a control group (n = 10). We obtained diverse data that permit determination of a point of time of measurement of surface temperature and definition of a degree of temperature variance. Results: After 5 minutes a significant change of 0.5 ̊ Celcius was noted on the palms; after 10 minutes on average 1.2 ̊ Celcius. Axillary temperature had significantly changed after 10 minutes with a mean temperature variation of 0.8 ̊ Celcius on the right side and 0.6 ̊ Celcius on the left side. Conclusions: Under consideration of appropriate time intervals of measurement and determined changes in surface temperature an early control of correct clip application in ETS is possible. In the palmar aspect an increase of 0.5 ̊ Celcius at an 5 minutes interval, and more than 1 ̊ Celcius at 10 minutes after placement of the clip as compared to basic values before application of the clip can be proposed.

Diss. (sammanfattning) Stockholm : Karol. inst., 2004. / Härtill 4 uppsatser.