Moderate
Established
Description
Naproxen reduces the diuretic response to furosemide by inhibiting prostaglandin synthesis, potentially causing fluid retention and worsening edema or heart failure.
Mécanisme
Renal prostaglandins mediate part of furosemide's natriuretic action; naproxen-mediated prostaglandin inhibition blunts this response and promotes sodium reabsorption.
Signification clinique
Clinically relevant in patients with heart failure, nephrotic syndrome, or hepatic cirrhosis where diuretic response is already marginally adequate.
Prise en charge
Avoid NSAIDs in patients dependent on furosemide for volume control; if necessary, monitor weight, BP, renal function, and electrolytes closely.