Bilevel positive airway pressure in two moments after bariatric surgery

Objective: To investigate the use of Bilevel Positive Airway Pressure (BiPAP) in morbidly obese individuals in two moments following bariatric surgery (Roux-en-Y gastric bypass): post-anesthetic recovery (PAR) and first postoperative day (1PO). DESIGN: Randomized and blinded clinical trial. Methods: We studied 40 morbidly obese individuals aged between 25 and 55 years who underwent pulmonary function test and chest X-ray preoperatively, and on the day of discharge (2nd day after surgery). They were randomly allocated into two groups: PAR-G (BiPAP in PAR for one hour), and 1PO-G (BIPAP for one hour on the 1PO). Results: In the PAR-G and 1PO-G, respectively there were significant reductions in slow vital capacity (SVC) (p=0.0007 vs. p<0.0001), inspiratory reserve volume (IRV) (p=0.0016 vs. p=0.0026), and forced vital capacity (FVC) (p=0.0013 vs. p<0.0001) and expiratory reserve volume (ERV) was maintained only for the PAR-G (p=0.4446 vs. p=0.0191). Comparing the groups, the SVC (p=0.0027) and FVC (p=0.0028) showed a significant difference between the treatments, while the PAR-G showed smaller declines in these capacities. The prevalence of atelectasis was 10% for the PAR-G and 30% for the 1PO-G (p=0.0027). Conclusion: Thus, the use of BiPAP in PAR can promote restoration of ERV and contribute to the reduction of atelectasis.65911611167FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESP2013/w-

Influence of age, anthropometric characteristics and body fat distribution in women's thoracic mobility

La acumulación de la grasa torácica puede contribuir a la reducción de la movilidad torácica (MT) con disminución del volumen pulmonar. También las alteraciones de la MT pueden ocurrir en el envejecimiento, debido a la progresiva calcificación de las articulaciones implicadas en los movimientos respiratorios y a la reducción de los espacios intervertebrales. Este estudio tuvo el objetivo de verificar la influencia de la edad, de las características antropométricas y de la distribución de grasa corporal en conductas de la MT de mujeres, así como verificar cuál de las variables es la más relevante para la MT. Se trata de un estudio transversal, del cual participaron 100 mujeres con edades entre 25 y 75 años y con índice de masa corporal (IMC) entre 18,5 y 55kg/m2. Se midieron las circunferencias del cuello (CC), de la cintura, de las caderas y la relación entre cintura/cadera. Se evaluó la MT a través de la cirtometría torácica en los niveles axilar y xifoides y, tras realizarse las tres mediciones, se determinó la MT por la diferencia entre el valor más grande obtenido en la inspiración y el menor valor en la espiración. Se emplearon los test de correlación y de regresión lineal múltiple. Mediante las correlaciones significativas, los resultados demostraron que la MT disminuye debido al aumento de edad y a la obesidad. La CC tuvo mayor influencia (16,60%) bajo la MT en el nivel axilar y el IMC en el nivel xifoides (18,16%). Se concluyó que la MT redujo con el envejecimiento y la obesidad, y que la acumulación de grasa en el cuello y el aumento del IMC son los factores que más influyen en el comprometimiento de la MT de mujeres.The accumulation of fat in the chest can contribute to reduced thoracic mobility (TM) with a decrease of lung volumes. TM changes can also occur in aging, due to progressive calcification of joints involved in respiratory movements and reduced intervertebral spaces. The objective of this study was to verify the influence of age, anthropometric characteristics and distribution of body fat on the behavior of women's TM and to check which of these variables is more relevant to the TM. This is a cross-sectional study with 100 women, from 25 to 75 years and body mass index (BMI) between 18.5 and 55kg/m2. Circumferences of neck (NC), waist, hips and waist/hip ratio were measured. TM was assessed by thoracic cirtometry, in axillary and xiphoid levels and, after three measures, the TM was determined by the difference between the highest value obtained in the inspiration and the lowest value at expiration. We used correlation tests and multiple linear regression. Results show, through significant correlations, that with increasing age and obesity, TM decreases. The NC had the greatest influence (16.60%) on TM in axillary level and on BMI in xiphoid level (18.16%). It is concluded that TM is reduced with aging and obesity and that the deposition of fat in the neck and the increase of BMI are the most important factors in the commitment of women's TM.O acúmulo de gordura no tórax pode contribuir para a redução da mobilidade torácica (MT) com declínio de volumes pulmonares. Alterações da MT também podem ocorrer no envelhecimento, devido à progressiva calcificação das articulações envolvidas nos movimentos respiratórios e redução dos espaços intervertebrais. O objetivo deste estudo foi verificar a influência da idade, das características antropométricas e da distribuição de gordura corporal no comportamento da MT de mulheres e verificar qual dessas variáveis é mais relevante para a MT. Trata-se de um estudo transversal, com 100 mulheres com idades entre 25 e 75 anos e índice de massa corporal (IMC) entre 18,5 e 55kg/m2. Foram mensuradas as circunferências do pescoço (CP), da cintura, do quadril e a relação cintura/quadril. A MT foi avaliada pela cirtometria torácica nos níveis axilar e xifoidiano e, após a realização de três medidas, a MT foi determinada pela diferença entre o maior valor obtido na inspiração e o menor valor obtido na expiração. Foram utilizados testes de correlação e de regressão linear múltipla. Os resultados mostram, por meio de correlações significativas, que com o aumento da idade e devido à obesidade ocorre diminuição da MT. A CP exerceu maior influência (16,60%) sobre a MT no nível axilar e o IMC no nível xifoidiano (18,16%). Conclui-se que a MT está reduzida com o envelhecimento e obesidade e que a deposição de gordura no pescoço e o aumento do IMC são os fatores mais importantes no comprometimento da MT de mulheres

Food Aversions in Women During The 2 Years After Roux-En-Y Gastric Bypass

The anatomical and physiological changes of the gastrointestinal tract after Roux-en-Y gastric bypass lead to changes in dietary patterns and their effects are still little known. Hence, the objective of this work was to characterize the prevalence, the associated factors and the list of food aversions with the effect of surgery on the body weight of women in the first two years after Roux-en-Y gastric bypass. A total of 141 women were studied. Their food aversions were assessed with a short food frequency questionnaire (FFQ-S) containing 26 items before and 6, 12 and 24 months after surgery. The FFQ-S was filled out during individual interviews and referenced in the medical records. The association between total aversion score and body weight variables and general characteristics of the group was analyzed. Variation of food aversions over time was assessed for 26 foods individually and grouped. of all the studied variables, a weak but significant negative correlation (rs = -0.1944; p = 0.0208) was found between total aversion score and shorter postoperative period and a weak but significant positive correlation was found between total aversion score and percentage of weight regained (rs = -0.1759; p = 0.0369). Food aversions were more common in the first six months after surgery, especially to red meats, rice, chicken, eggs, pasta, milk and others. Food aversions in the early postoperative period are associated with weight variations in the first two years after surgery and subside significantly over time, probably because of a physiological and cognitive adaptation of the individual to the surgical procedure.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP

Use of positive pressure in preoperative and intraoperative of bariatric surgery and its effect on the time of extubation

BACKGROUND AND OBJECTIVE: To investigate the influence of intraoperative and preoperative positive pressure in the time of extubation in patients undergoing bariatric surgery. METHOD: Randomized clinical trial, in which 40 individuals with a body mass index between 40 and 55 kg/m2, 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 1 h; G-intra (n = 10): individuals who received positive end-expiratory pressure of 10 cm H2O throughout the surgical procedure; and G-control (n = 20): not received any preoperative 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 10 cm 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. CONCLUSION: The use of positive end-expiratory pressure of 10 cm H2O in the intraoperative and positive pressure preoperatively, influenced the time of extubation of patients undergoing bariatric surgery