Background: The actual gold standard technique for obesity treatment is the Roux-en-Y gastric
bypass. However, complications may occur and the surgeon must be prepared for
them. Aim: To evaluate retrospectively the complications occurrence and associated factors in
patients who underwent bariatric surgery. Methods: In this study, 469 medical charts were considered, from patients and from data
collected during outpatient consultations. The variables considered were gender,
age, height, pre-operatory BMI, pre-operatory weight, pre-operatory comorbidities,
time of hospital stay, postoperative complications that demanded re-admission to
the hospital and the time elapsed between the procedure and the complication. The
patients' follow up was, at least, one year. Results: The incidence of postoperative complications that demanded a hospital care was
24,09%. The main comorbidity presented in this sample was hepatic steatosis. The
comorbidity that was associated with the postoperative period was type 2 diabetes.
There was a tendency for the female gender be related to the complications. The
cholecystectomy was the most frequent complication. Complications occurred during
the first year in 57,35%. Conclusion: The most frequent complication was the need to perform a cholecystectomy, where
the most frequent comorbidity was hepatic steatosis. Over half the complications
occurred during the first year postoperatively. Type 2 diabetes was associated
with the occurrence of postoperative complications; women had the highest
incidence; body mass index was not associated with the occurrence of
complications.