JOSE OTAVIO COSTA AULER JUNIOR
Projetos de Pesquisa
Unidades Organizacionais
Departamento de Cirurgia, Faculdade de Medicina - Docente
Instituto do Coração, Hospital das Clínicas, Faculdade de Medicina
LIM/08 - Laboratório de Anestesiologia, Hospital das Clínicas, Faculdade de Medicina - Líder
Instituto do Coração, Hospital das Clínicas, Faculdade de Medicina
LIM/08 - Laboratório de Anestesiologia, Hospital das Clínicas, Faculdade de Medicina - Líder
5 resultados
Resultados de Busca
Agora exibindo 1 - 5 de 5
- Effects of Positive End-expiratory Pressure Titration and Recruitment Maneuver on Lung Inflammation and Hyperinflation in Experimental Acid Aspiration-induced Lung Injury(2012) AMBROSIO, Aline M.; LUO, Rubin; FANTONI, Denise T.; GUTIERRES, Claudia; LU, Qin; GU, Wen-Jie; OTSUKI, Denise A.; MALBOUISSON, Luiz M. S.; AULER JR., Jose O. C.; ROUBY, Jean-JacquesBackground: In acute lung injury positive end-expiratory pressure (PEEP) and recruitment maneuver are proposed to optimize arterial oxygenation. The aim of the study was to evaluate the impact of such a strategy on lung histological inflammation and hyperinflation in pigs with acid aspiration-induced lung injury. Methods: Forty-seven pigs were randomly allocated in seven groups: (1) controls spontaneously breathing; (2) without lung injury, PEEP 5 cm H2O; (3) without lung injury, PEEP titration; (4) without lung injury, PEEP titration + recruitment maneuver; (5) with lung injury, PEEP 5 cm H2O; (6) with lung injury, PEEP titration; and (7) with lung injury, PEEP titration + recruitment maneuver. Acute lung injury was induced by intratracheal instillation of hydrochloric acid. PEEP titration was performed by incremental and decremental PEEP from 5 to 20 cm H2O for optimizing arterial oxygenation. Three recruitment maneuvers (pressure of 40 cm H2O maintained for 20 s) were applied to the assigned groups at each PEEP level. Proportion of lung inflammation, hemorrhage, edema, and alveolar wall disruption were recorded on each histological field. Mean alveolar area was measured in the aerated lung regions. Results: Acid aspiration increased mean alveolar area and produced alveolar wall disruption, lung edema, alveolar hemorrhage, and lung inflammation. PEEP titration significantly improved arterial oxygenation but simultaneously increased lung inflammation in juxta-diaphragmatic lung regions. Recruitment maneuver during PEEP titration did not induce additional increase in lung inflammation and alveolar hyperinflation. Conclusion: In a porcine model of acid aspiration-induced lung injury, PEEP titration aimed at optimizing arterial oxygenation, substantially increased lung inflammation. Recruitment maneuvers further improved arterial oxygenation without additional effects on inflammation and hyperinflation.
- Transfusion Requirements in Surgical Oncology Patients A Prospective, Randomized Controlled Trial(2015) ALMEIDA, Juliano Pinheiro de; VINCENT, Jean-Louis; GALAS, Filomena Regina Barbosa Gomes; ALMEIDA, Elisangela Pinto Marinho de; FUKUSHIMA, Julia T.; OSAWA, Eduardo A.; BERGAMIN, Fabricio; PARK, Clarice Lee; NAKAMURA, Rosana Ely; FONSECA, Silvia M. R.; CUTAIT, Guilherme; ALVES, Joseane Inacio; BAZAN, Mellik; VIEIRA, Silvia; SANDRINI, Ana C. Vieira; PALOMBA, Henrique; RIBEIRO JR., Ulysses; CRIPPA, Alexandre; DALLOGLIO, Marcos; DIZ, Maria del Pilar Estevez; KALIL FILHO, Roberto; AULER JR., Jose Otavio Costa; RHODES, Andrew; HAJJAR, Ludhmila AbrahaoBackground: Several studies have indicated that a restrictive erythrocyte transfusion strategy is as safe as a liberal one in critically ill patients, but there is no clear evidence to support the superiority of any perioperative transfusion strategy in patients with cancer. Methods: In a randomized, controlled, parallel-group, double-blind (patients and outcome assessors) superiority trial in the intensive care unit of a tertiary oncology hospital, the authors evaluated whether a restrictive strategy of erythrocyte transfusion (transfusion when hemoglobin concentration <7 g/dl) was superior to a liberal one (transfusion when hemoglobin concentration <9 g/dl) for reducing mortality and severe clinical complications among patients having major cancer surgery. All adult patients with cancer having major abdominal surgery who required postoperative intensive care were included and randomly allocated to treatment with the liberal or the restrictive erythrocyte transfusion strategy. The primary outcome was a composite endpoint of mortality and morbidity. Results: A total of 198 patients were included as follows: 101 in the restrictive group and 97 in the liberal group. The primary composite endpoint occurred in 19.6% (95% CI, 12.9 to 28.6%) of patients in the liberal-strategy group and in 35.6% (27.0 to 45.4%) of patients in the restrictive-strategy group (P = 0.012). Compared with the restrictive strategy, the liberal transfusion strategy was associated with an absolute risk reduction for the composite outcome of 16% (3.8 to 28.2%) and a number needed to treat of 6.2 (3.5 to 26.5). Conclusion: A liberal erythrocyte transfusion strategy with a hemoglobin trigger of 9 g/dl was associated with fewer major postoperative complications in patients having major cancer surgery compared with a restrictive strategy.
article 0 Citação(ões) na Scopus Vasopressin versus Norepinephrine in Patients with Vasoplegic Shock after Cardiac Surgery: The VANCS Randomized Controlled Trial (vol 126, pg 85, 2017)(2017) HAJJAR, L. A.; VINCENT, J. L.; GALAS, Barbosa Gomes F. R.; RHODES, A.; LANDONI, G.; OSAWA, E. A.; MELO, R. R.; SUNDIN, M. R.; GRANDE, S. M.; GAIOTTO, F. A.; POMERANTZEFF, P. M.; DALLAN, L. O.; FRANCO, R. A.; NAKAMURA, R. E.; LISBOA, L. A.; ALMEIDA, J. P. de; GERENT, A. M.; SOUZA, D. H.; GAIANE, M. A.; FUKUSHIMA, J. T.; PARK, C. L.; ZAMBOLIM, C.; FERREIRA, Rocha G. S.; STRABELLI, T. M.; FERNANDES, F. L.; CAMARA, L.; ZEFERINO, S.; SANTOS, V. G.; PICCIONI, M. A.; JATENE, F. B.; AULER JR., Costa J. O.; FILHO, R. K.- Nebulization of Vancomycin Provides Higher Lung Tissue Concentrations than Intravenous Administration in Ventilated Female Piglets with Healthy Lungs(2020) MORAIS, Cristiane Luchesi de Mello; NASCIMENTO, Jorge Willian Leandro; RIBEIRO, Aline Correa; CORTINEZ, Luis Ignacio; CARMONA, Maria Jose Carvalho; MAIA, Debora Rothstein Ramos; MONSEL, Antoine; AULER JR., Jose Otavio Costa; ROUBY, Jean-Jacques; OTSUKI, Denise AyaBackground: Intravenous vancomycin is used to treat ventilator-associated pneumonia caused by methicillin-resistant Staphylococcus aureus, but achieves high rates of failure. Vancomycin nebulization may be efficient to provide high vancomycin lung tissue concentrations. The aim of this study was to compare lung tissue and serum concentrations of vancomycin administered intravenously and by aerosol in mechanically ventilated and anesthetized healthy piglets. Methods: Twelve female piglets received a single intravenous dose of vancomycin (15mg/kg) and were killed 1 (n = 6) or 12h (n = 6) after the end of administration. Twelve piglets received a single nebulized dose of vancomycin (37.5mg/kg) and were killed 1 (n = 6) or 12h (n = 6) after the end of the aerosol administration. In each group, vancomycin lung tissue concentrations were assessed on postmortem lung specimens using high-performance liquid chromatography. Blood samples were collected for serum vancomycin concentration measurement 30min and 1, 2, 4, 6, 8, and 12h after the end of vancomycin administration. Pharmacokinetics was analyzed by nonlinear mixed effect modeling. Results: One hour after vancomycin administration, lung tissue concentrations in the aerosol group were 13 times the concentrations in the intravenous group (median and interquartile range: 161 [71, 301] mu g/g versus 12 [4, 42] mu g/g; P < 0.0001). Twelve hours after vancomycin administration, lung tissue concentrations in the aerosol group were 63 (23, 119) mu g/g and 0 (0, 19) mu g/g in the intravenous group (P < 0.0001). A two-compartment weight-scaled allometric model with first-order absorption and elimination best fit serum pharmacokinetics after both routes of administration. Area under the time-concentration curve from 0 to 12 h was lower in the aerosol group in comparison to the intravenous group (56 [8, 70] mg . h . l(-1)vs. 121 [103, 149] mg . h . l(-1), P = 0.002). Using a population model, vancomycin bioavailability was 13% (95% CI, 6 to 69; coefficient of variation = 85%) and absorption rate was slow (absorption half life = 0.3h). Conclusions: Administration of vancomycin by nebulization resulted in higher lung tissue concentrations than the intravenous route.
- Vasopressin versus Norepinephrine in Patients with Vasoplegic Shock after Cardiac Surgery The VANCS Randomized Controlled Trial(2017) HAJJAR, Ludhmila Abrahao; VINCENT, Jean Louis; GALAS, Filomena Regina Barbosa Gomes; RHODES, Andrew; LANDONI, Giovanni; OSAWA, Eduardo Atsushi; MELO, Renato Rosa; SUNDIN, Marcia Rodrigues; GRANDE, Solimar Miranda; GAIOTTO, Fabio A.; POMERANTZEFF, Pablo Maria; DALLAN, Luis Oliveira; FRANCO, Rafael Alves; NAKAMURA, Rosana Ely; LISBOA, Luiz Augusto; ALMEDIA, Juliano Pinheiro de; GERENT, Aline Muller; SOUZA, Dayenne Hianae; GAIANE, Maria Alice; FUKUSHIMA, Julia Tizue; PARK, Clarice Lee; ZAMBOLIM, Cristiane; FERREIRA, Graziela Santos Rocha; STRABELLI, Tania Mara; FERNANDES, Felipe Lourenco; CAMARA, Ligia; ZEFERINO, Suely; SANTOS, Valter Garcia; PICCIONI, Marilde Albuquerque; JATENE, Fabio Biscegli; AULER JR., Jose Otavio Costa; KALIL FILHO, RobertoBackground: Vasoplegic syndrome is a common complication after cardiac surgery and impacts negatively on patient outcomes. The objective of this study was to evaluate whether vasopressin is superior to norepinephrine in reducing postoperative complications in patients with vasoplegic syndrome. Methods: This prospective, randomized, double-blind trial was conducted at the Heart Institute, University of Sao Paulo, Sao Paulo, Brazil, between January 2012 and March 2014. Patients with vasoplegic shock (defined as mean arterial pressure less than 65 mmHg resistant to fluid challenge and cardiac index greater than 2.2 l.min(-1).m(-2)) after cardiac surgery were randomized to receive vasopressin (0.01 to 0.06 U/min) or norepinephrine (10 to 60 mu g/min) to maintain arterial pressure. The primary endpoint was a composite of mortality or severe complications (stroke, requirement for mechanical ventilation for longer than 48 h, deep sternal wound infection, reoperation, or acute renal failure) within 30 days. Results: A total of 330 patients were randomized, and 300 were infused with one of the study drugs (vasopressin, 149; norepinephrine, 151). The primary outcome occurred in 32% of the vasopressin patients and in 49% of the norepinephrine patients (unadjusted hazard ratio, 0.55; 95% CI, 0.38 to 0.80; P = 0.0014). Regarding adverse events, the authors found a lower occurrence of atrial fibrillation in the vasopressin group (63.8% vs. 82.1%; P = 0.0004) and no difference between groups in the rates of digital ischemia, mesenteric ischemia, hyponatremia, and myocardial infarction. Conclusions: The authors' results suggest that vasopressin can be used as a first-line vasopressor agent in postcardiac surgery vasoplegic shock and improves clinical outcomes.