Step 1 → Gastrointestinal Bowel Obstruction and MotilityPreview this topic sectionPreview the conditions. Plans unlock the full Step 1 details when you need them. Free Biochemistry Free Microbiology Plans Bowel Obstruction and Motility conditions Ileus Intussusception Small Bowel Obstruction (SBO) Superior Mesenteric Artery Syndrome Volvulus