• A G Johnson, T V Nguyen, and R O Day.
• St. Vincents Hospital, Sydney, Australia.
• Ann. Intern. Med. 1994 Aug 15; 121 (4): 289-300.

PurposeA meta-analysis of randomized trials studying the effect of nonsteroidal anti-inflammatory drugs (NSAIDs) on blood pressure.Data Sources And Study SelectionEight databases were searched, yielding 38 randomized, placebo-controlled trials and 12 randomized but not placebo-controlled trials (comparing two or more NSAIDs).Data ExtractionPooled mean treatment effects were computed in each trial for blood pressure, weight, creatinine clearance, plasma renin activity, and daily urinary excretion of sodium and prostaglandins. Meta-analyses of these variables were done for all randomized, controlled trials; for all randomized, uncontrolled trials; and for several subgroups.Data SynthesisWhen pooled, NSAIDs elevated supine mean blood pressure by 5.0 mm Hg (95% CI, 1.2 to 8.7 mm Hg) but had no effect on variables other than blood pressure. Nonsteroidal anti-inflammatory drugs antagonized the antihypertensive effect of beta-blockers (blood pressure elevation, 6.2 mm Hg; CI, 1.1 to 11.4 mm Hg) more than did vasodilators and diuretics. Among NSAIDs, piroxicam produced the most marked elevation in blood pressure (6.2 mm Hg; CI, 0.8 to 11.5 mm Hg), whereas sulindac and aspirin had the least hypertensive effect.ConclusionsNonsteroidal anti-inflammatory drugs may elevate blood pressure and antagonize the blood pressure-lowering effect of antihypertensive medication to an extent that may potentially increase hypertension-related morbidity. Although certain NSAIDs and antihypertensive agents could be more likely to produce these effects, the underlying mechanisms require further study.

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