Acronym

SMA - Superior Mesenteric Artery

Superior Mesenteric Artery

Major artery arising from abdominal aorta, supplying small intestine, proximal colon

Expansion

Superior Mesenteric Artery

Purpose

Assess for occlusion (mesenteric ischaemia), dissection, stenosis

Clinical Context

Superior mesenteric artery: arises from anterolateral aorta at L1; supplies jejunum, ileum, caecum, ascending colon. Superior mesenteric artery thrombosis or dissection equals mesenteric ischaemia (high mortality).

  • Superior mesenteric vein
  • Mesenteric vasculature

Key Points

  • Superior mesenteric artery occlusion equals acute mesenteric ischaemia; presents with abdominal pain and elevated lactate