[Use of positive pressure in pre and intraoperative of bariatric surgery and its effect on the time of extubation].
OBJECTIVE
to investigate the influence of intraoperative and preoperative airway positive pressure in the time of extubation in patients undergoing bariatric surgery.


METHODS
Randomized clinical trial, in which 40 individuals with a body mass index between 40 and 55kg/m(2), age between 25 and 55 years, nonsmokers, underwent bariatric surgery type Roux-en-Y gastric bypass by laparotomy and with normal preoperative pulmonary function were randomized into the following groups: G-pre (n = 10): individuals who received treatment with noninvasive positive pressure before surgery for one hour, G-intra (n = 10): individuals who received positive end-expiratory pressure of 10cm H2O throughout the surgical procedure and G-control (n = 20): not received any pre or intraoperative intervention. Following were recorded: time between induction of anesthesia and extubation, between the end of anesthesia and extubation, duration of mechanical ventilation, and time between extubation and discharge from the Post-Anesthetic Recovery.


RESULTS
there was no statistical difference between groups. However, when applied to the Cohen coefficient, the use of positive end-expiratory pressure of 10cm H2O during surgery showed a large effect on the time between the end of anesthesia and extubation. About this same time, the treatment performed preoperatively showed moderate effect.


CONCLUSIONS
The use of positive end-expiratory pressure of 10cm H2O in the intraoperative and positive pressure preoperatively, influenced the time of extubation of patients undergoing bariatric surgery.
Programa de Mestrado em Fisioterapia da Universidade Metodista de Piracicaba (UNIMEP), Piracicaba, São Paulo, Brasil.
Letícia
L
Baltieri
Programa de Mestrado em Fisioterapia da Universidade Metodista de Piracicaba (UNIMEP), Piracicaba, São Paulo, Brasil.
Laisa Antonela Dos
LA
Santos
Programa de Mestrado em Fisioterapia da Universidade Metodista de Piracicaba (UNIMEP), Piracicaba, São Paulo, Brasil.
Irineu
I
Rasera-Junior
Programa de Mestrado em Fisioterapia da Universidade Metodista de Piracicaba (UNIMEP), Piracicaba, São Paulo, Brasil.
Maria Imaculada de Lima
MI
Montebelo
Programa de Mestrado em Fisioterapia da Universidade Metodista de Piracicaba (UNIMEP), Piracicaba, São Paulo, Brasil. Electronic address: empforti@unimep.br.
Eli Maria
EM
Pazzianotto-Forti
Bariatric surgery; Cirurgia bariátrica; Diseases; Doenças; Obesidade; Obesity; Ventilation: positive pressure; Ventilação mecânica: pressão positiva