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Change in renal function associated with drug treatment in heart failure: national guidance
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    Kidney injury attributable to treatment of acute gout in heart failure

    Under the heading "Changes in kidney function during intercurrent illness"(1) mention must be made of the risk of acute kidney injury when nonsteroidal anti inflammatory drugs(NSAIDs) are prescribed for acute gout, the latter complication(the equivalent of "intercurrent illness") sometimes documented as a consequence of diuretic use in congestive heart failure(CHF)(2). Coprescription of NSAIDs, diuretics, and angiotensin converting enzyme inhibitors(or angiotensin receptor blockers), so-called triple therapy, is associated with increased risk of acute kidney injury(rate ratio 1.31, 95% Confidence Interval 1.12 to 1.53)(3). This was shown in a nested case-control study which enrolled patients in whom hypertension was the indication for prescription of diuretics and/or angiotensin converting enzyme inhibitors(or angiotensin receptor blockers)(3), but might be equally applicable in the context of CHF. Additionally, among CHF patients who have a drug regime which includes spironolactone, the use of NSAIDs might increase the risk of hyperkalaemia. The rationale is that NSAIDs "interfere with the stimulatory effect of prostaglandins on the release of renin"(4). The risk of hyperkalaemia may be compounded by concurrent use of beta adrenergic blocking agents(4).
    For all the above reasons, NSAIDs should be contraindicated in CHF patients with gout. The recommended alternatives include colcichine(5) and intraarticuoar corticosteroids(6), resp...

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