Management of Sudden Onset Periumbilical Pain

Diagnostic Approach

The American Heart Association recommends obtaining contrast-enhanced CT angiography (CTA) of the abdomen and pelvis immediately in patients with sudden onset periumbilical pain and cardiovascular risk factors, atrial fibrillation, or severe pain out of proportion to physical findings 1, 2, 3, 4
Pain out of proportion to physical examination findings is a hallmark of acute mesenteric ischemia (AMI) and should be assumed to be AMI until proven otherwise, according to the American College of Cardiology 1, 2, 5, 4
The European Society of Cardiology suggests that abrupt or instantaneous onset of severe periumbilical pain suggests vascular catastrophe (mesenteric ischemia or aortic dissection) 5
Tachycardia is the most sensitive early warning sign of surgical complications and should trigger urgent investigation, as recommended by the World Journal of Emergency Surgery 5

Peritoneal signs (rebound tenderness, guarding, rigidity) indicate ischemia, perforation, or peritonitis requiring emergency surgery, according to the World Journal of Emergency Surgery 6, 7, 5
Elevated lactate suggests ischemia or sepsis, but normal levels do not exclude early ischemia, as noted by the World Journal of Emergency Surgery 6, 5
Leukocytosis and elevated CRP may indicate infection or inflammation, though CRP has superior sensitivity/specificity compared to WBC for surgical disease, according to Praxis Medical Insights 5

CTA has 95-100% sensitivity and specificity for detecting mesenteric vascular abnormalities, as reported by Praxis Medical Insights 4
CTA identifies the etiology of AMI, including arterial embolism, arterial thrombosis, venous thrombosis, or non-occlusive mesenteric ischemia, according to the European Heart Journal 3, 4
CTA evaluates bowel viability simultaneously, detecting pneumatosis intestinalis, portal venous air, bowel wall thickening, and perforation, as recommended by the American Heart Association 1, 2

Immediate resuscitation and revascularization are recommended for confirmed acute mesenteric ischemia, according to the World Journal of Emergency Surgery and the American Heart Association 6, 1, 3, 4
Endovascular therapy is the first-line treatment for thrombotic SMA occlusion, with lower mortality than surgery in meta-analyses, as reported by the European Heart Journal 3, 4
Emergency laparotomy is indicated if peritonitis, septic shock, or markedly elevated lactate suggests infarcted bowel, according to the American Heart Association and Praxis Medical Insights 1, 2, 4