Internal hernia-related bowel obstructions can present subtly, masking developing bowel strangulation. A study of 119 patients found 68.9% had strangulated hernias, highlighting the severe consequences of delayed surgery. Patients facing delays were more likely to require bowel resection, suffer bowel necrosis, and endure longer hospital stays.
Key biomarkers indicating threatened bowel viability, even without obvious bedside signs, included lactate and D-dimer. Preoperative CT findings also played a role, with the absence of peritonitis and the whirlpool sign, alongside a higher base excess, associated with surgical delays. These factors can obscure early ischemia.
Early ischemia is reversible, but delayed recognition can lead to irreversible necrosis. In the delayed group, 85.7% needed bowel resection, compared to 53.2% in the timely surgery group. The findings underscore the need for surgeons to integrate laboratory and imaging data, not just rely on overt peritoneal signs.
Lactate and D-dimer reflect established strangulation, while base excess combined with CT can offer earlier clues to mesenteric compromise. A "quiet abdomen" or unremarkable imaging does not rule out dangerous bowel ischemia. Earlier, integrated interpretation can preserve bowel viability and reduce the need for resection.