Predicting Symptom Relief After Reoperation for Suspected Internal Herniation After Laparoscopic Roux-en-Y Gastric Bypass

Leontine H Wijngaarden, Sophie L van Veldhuisen, René A Klaassen, Erwin van der Harst, Charles C van Rossem, Ahmet Demirkiran, Steve M M de Castro, Frederik H W Jonker
Obesity Surgery 2018, 28 (12): 3801-3808

BACKGROUND: Internal herniation (IH) is one of the most common long-term complications after laparoscopic Roux-en-Y gastric bypass (LRYGB). Diagnosis of IH may be difficult, and not all patients with suspected IH will have full relief of symptoms after closure of both mesenteric defects.

OBJECTIVES: To investigate possible predictive factors for relief of symptoms in patients with suspected IH.

METHODS: All patients that underwent reoperation for (suspected) IH after LRYGB from June 2009 to December 2016 were retrospectively evaluated in this multicentre cohort study. Logistic regression analysis was used to identify predictive factors for pain relief after closure of the mesenteric defects.

RESULTS: A total of 193 patients underwent laparoscopy for (suspected) IH during the study period. The median interval between LRYGB and reoperation was 18.3 ± 19.0 months. In 40.2% of cases, IH was identified on computed tomography (CT), and IH was objectified during surgery in 61.1%. Postoperative symptom relief was observed in 146 patients (77.2%). For patients in which IH was present during surgery, 82.8% had relief of pain postoperatively, as compared to 68.5% for those procedures in which no IH was found. The only significant predictor for postoperative pain relief was a swirl sign on CT (OR 4.24, 95%CI 1.63-11.05).

CONCLUSIONS: Pain relief after closure of the mesenteric defects for IH remains unpredictable. A positive CT for IH was a predictive factor for symptom relief after reoperation for (suspected) IH after LRYGB. However, many patients benefit from closure of the mesenteric defects, irrespective of perioperative presence of IH.

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