The role of citrulline, intestinal fatty acid–binding protein, and D-dimer as potential biomarkers in the diagnosis of internal herniation after Roux-en-Y gastric bypass

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Background: Diagnosing internal herniation (IH) in Roux-en-Y gastric bypass (RYGB) patients with acute abdominal pain poses a diagnostic challenge. Diagnostic laparoscopy is often required for a definitive diagnosis. We hypothesized that intestinal ischemia biomarkers would aid in the diagnosing of IH. Objectives: To explore intestinal ischemia biomarkers in diagnosing IH. Setting: University Hospital, Sweden. Methods: Prospective inclusion of 46 RYGB patients admitted for acute abdominal pain between June 2015 and December 2017. Blood samples for analysis of citrulline, intestinal fatty acid–binding protein (I-FABP), and D-dimer were drawn <72 hours from admission and compared between patients with IH (n = 8), small bowel obstruction (SBO) (n = 5), other specified diagnoses (n = 12), or unspecified abdominal pain (n = 21). Levels of white blood cell count (WBC), C-reactive protein (CRP), and lactate at admission were compared. A prospective pain questionnaire for time of pain onset and level of pain at onset and at admission was analyzed. Results: None of the investigated biomarkers differed significantly between diagnosis categories. Most patients with IH had normal CRP, WBC, and D-dimer levels while their lactate levels were significantly lower (P = .029) compared with the rest of the cohort. Neither pain level nor pain duration differed between the groups. Conclusion: This study shows that citrulline, I-FABP, and D-dimer cannot be used to diagnose IH and indicates that CRP, D-dimer, and lactate are rarely elevated by an IH. Furthermore, pain intensity and duration cannot differentiate patients with IH. A diagnostic laparoscopy remains the gold standard to diagnose and rule out an IH.

Originalspråkengelska
Sidor (från-till)1704-1712
TidskriftSurgery for Obesity and Related Diseases
Volym17
Utgåva10
DOI
StatusPublished - 2021

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