"systemic hypotension (e.g. cardiogenic, septic, or haemorrhagic shock)"
"systemic hypotension (e.g. cardiogenic, septic, or haemorrhagic shock)"
"medication-induced (e.g. vasoconstriction from digitalis, amphetamines, cocaine)"
"atherosclerotic stenosis of the superior mesenteric artery (e.g. mesenteric angina)"