[Non-steroid anti-inflammatory agents, diuretics and kidney function: a warning].

Area of Science:

• Nephrology
• Pharmacology
• Internal Medicine

Background:

• Diuretic agents are commonly prescribed for fluid management.
• Non-steroidal anti-inflammatory drugs (NSAIDs) are widely used for pain and inflammation.
• Concurrent use of these drug classes is prevalent in clinical practice.

Observation:

• The combination of diuretics and NSAIDs can significantly diminish the natriuretic efficacy of certain diuretics.
• This drug interaction poses a risk for acute kidney injury, specifically non-oliguric renal failure.
• Predisposing factors amplify the risk, including volemic depletion, compromised effective circulating volume (e.g., cardiac insufficiency, liver cirrhosis), pre-existing nephropathy (e.g., lupus erythematosus, chronic renal failure), and borderline renal function (e.g., elderly patients, diabetics).

Findings:

• Concurrent administration of diuretics and NSAIDs can lead to a drastic reduction in diuretic efficacy.
• Acute non-oliguric renal failure is a potential adverse outcome in susceptible patients.
• Risk stratification is crucial, identifying patients with volemic depletion, circulatory dysfunction, or renal impairment.

Implications:

• Clinicians should exercise caution when prescribing concurrent diuretic and NSAID therapy.
• Patient monitoring for renal function is essential, particularly in those with identified risk factors.
• Alternative pain management strategies may be considered for patients on diuretic therapy to mitigate renal risk.