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Deterioration in renal function associated with angiotensin converting enzyme inhibitor therapy is not always
M A Devoy1, C R Tomson, M E Edmunds
1Department of Nephrology, Leicester General Hospital, UK.
Insights
Angiotensin converting enzyme (ACE) inhibitors can cause serious kidney damage, especially in patients with existing vascular disease. Careful monitoring is crucial to prevent irreversible renal function decline.
Area of Science:
- Nephrology
- Cardiology
- Pharmacology
Background:
- Angiotensin converting enzyme (ACE) inhibitors are widely prescribed for hypertension and heart failure.
- Their known side effects include cough and hyperkalemia.
- Renal function decline is a recognized, though typically reversible, complication.
Observation:
- A cohort of 15 patients experienced renal function deterioration coinciding with ACE inhibitor initiation.
- Most patients had pre-existing renal impairment or extra-renal vascular disease.
- A significant minority required dialysis, with some experiencing irreversible kidney damage.
Findings:
- ACE inhibitor use was associated with acute kidney injury in susceptible patients.
- Conventional explanations for renal function decline do not fully explain irreversible outcomes.
- Patients with atherosclerotic vascular disease appear at higher risk.
Implications:
- ACE inhibitors should be used with extreme caution in patients with likely atherosclerotic vascular disease.
- Further research is needed to elucidate mechanisms of irreversible renal injury.
- Clinical guidelines should be updated to identify and manage high-risk patients.
Abstract:
Fifteen patients presented between January 1986 and January 1991 with deterioration in renal function coincident with the introduction of angiotensin converting enzyme inhibitors. There was evidence of extrarenal vascular disease in 12 patients and preexisting renal impairment in 13. Four patients remained dialysis-dependent and died within 4 weeks of presentation. Five patients required short-term dialysis. Serum creatinine remained above pre-treatment values in seven patients. Conventional explanations of the decline in renal function with ACE inhibition do not account for irreversible decrements in renal function. Possible mechanisms for this observation and clinical guidelines to identify patients at risk are suggested. We conclude that these agents should be used with great care in patients in whom atherosclerotic vascular disease is likely.
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