Cardiovascular events associated with the long-term use of NSAIDs: a review of randomized controlled trials and observational studies
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Francesco Salvo1, Stefania Antoniazzi, Mai Duong
1University of Bordeaux, Pharmacology , 146 rue Leo Saignat, 33076 Bordeaux , France +33 557574671 ; +33 557574671 ; nicholas.moore@u-Bordeaux.fr.
Introduction:
An increased risk of cardiovascular thrombotic events in users of NSAIDs was first demonstrated for rofecoxib. This risk seems to be related to the COX-2 inhibitory potency and has been found with most NSAIDs except naproxen. Two main hypotheses have been advanced: an imbalance between COX-1-dependent platelet production of thromboxane and partly COX-2-dependent endothelial production of prostacyclin, and a COX-2-dependent increase in blood pressure.
Areas Covered:
Clinical trials and observational studies providing information about cardiovascular risk associated with long-term use of NSAIDs were retrieved; 14 clinical trials and 16 observational studies mentioned a follow-up of at least 6 months.
Expert Opinion:
Results are ambiguous: long-term exposure seemed associated with an increased risk of myocardial infarction or stroke with high-dose rofecoxib, and perhaps diclofenac, but less with other NSAIDs. In other studies, little or no increase in risk was associated with exposures shorter than 30 days. Since most NSAIDs are rarely used long term, there is little information on risks associated with long-term use. The relative risks or odds ratios associated with most drugs are mostly well below 2.
Insights
Non-steroidal anti-inflammatory drugs (NSAIDs) may increase cardiovascular thrombotic event risk, particularly with long-term use of high-dose drugs like rofecoxib and diclofenac. Naproxen appears safer, with most NSAIDs showing a risk ratio below 2.
Area of Science:
- Pharmacology
- Cardiovascular Medicine
- Epidemiology
Background:
- NSAIDs, particularly rofecoxib, are linked to increased cardiovascular thrombotic events.
- Risk is associated with COX-2 inhibitory potency, with naproxen being an exception.
- Hypotheses include prostacyclin/thromboxane imbalance and COX-2-mediated hypertension.
Purpose of the Study:
- To evaluate the cardiovascular risk associated with NSAID use.
- To analyze data from clinical trials and observational studies on NSAID cardiovascular safety.
Main Methods:
- Systematic review of clinical trials and observational studies.
- Inclusion criteria: studies with follow-up of at least 6 months.
- Analysis of cardiovascular risk data for various NSAIDs.
Main Results:
- Ambiguous results regarding long-term NSAID exposure and cardiovascular risk.
- Increased risk of myocardial infarction or stroke noted with high-dose rofecoxib and possibly diclofenac.
- Limited risk increase with shorter NSAID exposure (under 30 days) and most other NSAIDs (risk ratio < 2).
Conclusions:
- Long-term NSAID use, especially high-dose rofecoxib and diclofenac, may elevate cardiovascular risk.
- Most NSAIDs show a low relative risk, particularly for short-term use.
- Further research is needed to clarify risks associated with long-term use of most NSAIDs.
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