Mesenteric ischaemia in haemodialysis patients: a case/control study

Area of Science:

• Nephrology
• Gastroenterology
• Vascular Surgery

Background:

• Mesenteric ischaemia is an increasing concern in dialysis patients, with unclear risk factors and prognosis.
• This study addresses the need for better understanding of mesenteric ischaemia in this population.

Purpose of the Study:

• To describe clinical, biological, and radiological aspects of mesenteric ischaemia in haemodialysis patients.
• To identify risk factors for mesenteric ischaemia in haemodialysis patients.
• To evaluate the prognosis of haemodialysis patients following mesenteric ischaemia.

Main Methods:

• A case-control study involving 15 haemodialysis patients with mesenteric ischaemia and 30 matched controls.
• Data collected included clinical presentation, laboratory results, radiological findings, and treatment outcomes.
• Survival analysis was performed to compare case and control groups.

Main Results:

• Hypotensive episodes during dialysis preceded mesenteric ischaemia in 47% of cases.
• Common symptoms included abdominal pain, guarding, fever, and hyperleucocytosis (87%).
• The caecum was the most frequently affected segment (47%); 12 patients underwent surgery.
• No significant differences in cardiovascular risk factors or haemodialysis characteristics were found between cases and controls.
• Median survival for cases was 600 days, significantly lower than controls (P=0.0132).
• Patients surviving >3 months had a median survival of 1500 days, similar to controls.

Conclusions:

• Mesenteric ischaemia should be suspected in dialysis patients with abdominal pain during or after dialysis.
• Prompt diagnosis and treatment are crucial for a favourable prognosis.
• Survival outcomes can be similar to matched controls if patients survive the initial 3 months post-ischaemia.