[Influence of cardiac circulation and medication on the perfusion of the intestine]

Area of Science:

• Gastroenterology
• Cardiology
• Intensive Care Medicine

Background:

• Abdominal perfusion is intrinsically linked to cardiac function and systemic circulation.
• Non-occlusive bowel ischemia (NOD) is a critical concern in surgical and internal intensive care, stemming from inadequate blood flow to the intestines.

Observation:

• Cardiac medications can adversely affect bowel perfusion: digitalis increases muscle tone, diuretics cause hypovolemia and malperfusion, antihypertensives may induce hypotension requiring catecholamines, and catecholamines can cause vasoconstriction in the splanchnic area.

Findings:

• Preoperative ACE inhibitors should be administered postoperatively due to their beneficial effects on bowel microcirculation.
• Beta-blockers stabilize abdominal vascular tone, mitigate parasympathetic overactivity, and reduce neurogenic shock risk.
• Catecholamine use requires careful consideration to avoid exacerbating bowel ischemia.

Implications:

• Therapeutic strategies for NOD must address underlying vascular and hemodynamic factors.
• Management should also incorporate measures to prevent bacterial translocation and subsequent sepsis, common complications of intestinal ischemia.