The Comparative Study of Abdominal Pain Characteristics after Laparoscopic Roux-en-Y Gastric Bypass and Laparoscopic One-Anastomosis Gastric Bypass in Patients with Morbid Obesity

This study aimed to investigate and compare the characteristics of abdominal pain after bariatric surgery with two techniques of Laparoscopic One-Anastomosis Gastric Bypass (LOAGB) and Laparoscopic Roux-en-Y Gastric Bypass (LRYGB) in patients with morbid obesity.

This prospective descriptive-analytical study was conducted on 114 patients who were candidates for bariatric surgery. Patients were entered to study in one of two groups of LOAGB and LRYGB by convenient and continuous sampling. The characteristics of abdominal pain of patients were investigated and compared at certain periods (24 and 48 hours and 10, 20, 30, and 90 days after surgery) using McGill Pain Questionnaire.

The frequency of severe abdominal pain in the LOAGB group within 48 hours after surgery was significantly higher than the LRYGB group (P < 0.05). The highest abdominal pain distribution at the first 5 time periods in the two groups was in the left lower quadrant of the abdomen. The frequency of description of ambiguous pain within 48 hours and 10 days in the LOAGB group was significantly higher than LRYGB. The frequency of pattern of periodical (intermittent) pain at the periods of 48 hours and 10 and 20 days after surgery in the LOAGB group was significantly higher than LRYGB.

The results of this study showed that there was no significant difference in the frequency of abdominal pain and its distribution between LOAGB and LRYGB groups. However, the definitive decision to choose a bariatric surgery technique for lower abdominal pain requires further study.