NILTON TOKIO KAWAHARA
Projetos de Pesquisa
Unidades Organizacionais
Instituto Central, Hospital das Clínicas, Faculdade de Medicina - Médico
8 resultados
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Agora exibindo 1 - 8 de 8
- Does weight gain, throughout 15 year follow-up after Nissen laparoscopic fundoplication, compromise reflux symptoms control?(2020) DIB, Victor Ramos Mussa; RAMOS, Almino Cardoso; KAWAHARA, Nilton Tokio; CAMPOS, Josemberg Marins; MARCHESINI, Joao Caetano; GALVAO-NETO, Manoel; GUIMARAES, Adriana Goncalves Daumas Pinheiro; PICANCO-JUNIOR, Adriano Pessoa; DOMENE, Carlos EduardoBackground: Gastroesophageal reflux disease is defined by the abnormal presence of gastric content in the esophagus, with 10% incidence in the Western population, being fundoplication one treatment option. Aim: To evaluate the early (six months) and late (15 years) effectiveness of laparoscopic fundoplication, the long term postoperative weight changes, as well as the impact of weight gain in symptoms control. Methods: Prospective study of 40 subjects who underwent laparoscopic Nissen's fundoplication. Preoperatively and early postoperatively, clinical, endoscopic, radiologic, manometric and pHmetric evaluations were carried out. After 15 years, clinical and endoscopic assessments were carried out and the results compared with the early ones. The presence or absence of obesity was stratified in both early and late phases, and its influence in the long-term results of fundoplication was studied, measuring quality of life according to the Visick criteria. Results: The mean preoperative ages, weight and body mass index were respectively, 51 years, 69.67 kg and 25.68 kg/m(2). The intraoperative and postoperative complications rates were 12.5% and 15%, without mortality. In the early postoperative period the symptoms were well controlled, hernias and esophagitis disappeared, the lower esophageal sphincter had functional improvement and pHmetry parameters normalized. In the late follow-up 29 subjects were assessed. During this period there was adequate clinical control of reflux regardless of weight gain. In both time periods Visick criteria improved. Conclusion: Fundoplication was safe and effective in early and late periods. There was late weight gain, which did not influence effective symptoms control.
- Metabolic Duodenal Switch: The Old Is New Again(2017) KAWAHARA, Nilton T.; ALSTER-VICENTE, Clarissa; KOYAISHI, Akemi; JACOMO, Alfredo L.
- Effect of COVID-19 pandemic on global Bariatric surgery PRActiceS-The COBRAS study(2021) SINGHAL, Rishi; TAHRANI, Abd A.; SAKRAN, Nasser; HERRERA, Miguel; MENON, Vinod; KHAITAN, Manish; FOSCHI, Diego; SUPER, Jonathan; SANDVIK, Jorunn; ANGRISANI, Luigi; KAWAHARA, Nilton; TEIXEIRA, Julio; CAMPOS, Guilherme M.; KOTHARI, Shanu; GRAHAM, Yitka; LUDWIG, Christian; MAHAWAR, KamalIntroduction: There is a paucity of data in scientific literature on the impact of Coronavirus Disease 2019 (COVID-19) pandemic on bariatric surgery. The aim of this study was to evaluate the impact of COVID-19 pandemic on Bariatric Surgery globally. Methods: We conducted a global online survey of bariatric surgeons between 16/04/20 - 15/05/20. The survey was endorsed by five national bariatric surgery societies and circulated amongst their memberships. Authors also shared the link through their personal networks, email groups, and social media. Results: 703 respondents from 77 countries completed the survey. Respondents reported a drop in elective bariatric activity from a median (IQR) of 130 (60-250) procedures in 2019 to a median of 0 (0-2) between16/03/2020 and 15/04/2020 during the pandemic. The corresponding figures for emergency activity were 5 (2-10) and 0 (0-1) respectively. 441 (63%) respondents did not perform any bariatric procedures during this time period. Surgeons reported outcomes of 61 elective bariatric surgical procedures during the pandemic with 13 (21%) needing ventilation and 2 (3.3%) deaths. Of the 13 emergency bariatric procedures reported, 5 (38%) needed ventilation and 4 (31%) died. 90 (13%) surgeons reported having had to perform a bariatric surgical or endoscopic procedure without adequate Personal Protective Equipment. Conclusions: COVID-19 pandemic led to a remarkable decline in global elective and emergency bariatric surgery activity at its beginning. Both elective and emergency procedures performed at this stage of the pandemic had considerable morbidity and mortality.
conferenceObject Modified Nissen Fundoplication After Roux-en-y-gastric Bypass for Obesity: an Antireflux Surgery Alternative(2012) KAWAHARA, Nilton Tokio; ALSTER, Clarissa; MALUF-FILHO, Fause; KOYAISHI, Akemi; CAMPOS, G.- Modified Nissen fundoplication: laparoscopic anti-reflux surgery after Roux-en-Y gastric bypass for obesity(2012) KAWAHARA, Nilton T.; ALSTER, Clarissa; MALUF-FILHO, Fauze; POLARA, Wilson; CAMPOS, Guilherme M.; POLI-DE-FIGUEIREDO, Luiz Francisco
conferenceObject Metabolic Duodenal Switch: Principles and Practice(2020) KAWAHARA, Nilton; KAWAHARA, Lucas; KOYAISHI, Akemi; BARROS, Cecilia; JACOMO, Alfredo; OTOCH, JoseconferenceObject Modified Nissen Fundoplication After Roux-en-Y-Gastric Bypass for Obesity: An Antireflux Surgery Alternative(2013) KAWAHARA, N.; ALSTER, C.; MALUF-FILHO, F.; KOYAISHI, A.; CAMPOS, G.; HIMPENS, J.conferenceObject CALIBRATED HAND-SEWN GASTROJEJUNOSTOMY STANDARDIZATION FOR ROUX EN Y GASTRIC BYPASS(2015) KAWAHARA, Nilton Tokio; VICENTE, Clarissa Alster; KOYAISHI, Akemi; MARUTA, Luis