Concomitant use of proton pump inhibitors in patients taking clopidogrel was not significantly associated with overall mortality (RR 1.09; 95% CI 0.94-1.26; P=0.23).
Meta-Analysis (n=93,278)
Does concomitant proton pump inhibitor use increase cardiovascular events and mortality in patients receiving clopidogrel?
High-quality evidence from RCTs and propensity-matched studies shows no significant adverse cardiovascular interaction between clopidogrel and PPIs, suggesting PPIs should not be withheld when indicated for gastrointestinal protection.
Relative Risk: 1.09 (95% CI 0.94–1.26)
p-value: p=0.23
BACKGROUND: Recent studies have suggested an adverse interaction between proton pump inhibitors (PPI) and clopidogrel. AIM: To perform a meta-analysis of cardiovascular outcomes and mortality in patients taking clopidogrel, with and without concomitant PPI. METHODS: We searched MEDLINE, EMBASE, Cochrane Controlled Trials Register in October 2009, and checked conference abstracts for randomized and nonrandomized studies that reported the risk of cardiovascular events and mortality with PPI exposure in patients taking clopidogrel. We performed random effects meta-analysis, stratified by study design and assessed heterogeneity using the I2 statistic. RESULTS: Our review included 23 studies covering 93,278 patients. There was substantial heterogeneity in the meta-analyses of major cardiovascular events (19 studies, I2 = 79%) or myocardial infarction (12 studies, I2 = 77%). Analysis of propensity-matched or randomized trial participants showed no associated cardiovascular risk with PPIs, whereas other observational studies generally showed a significant association. Meta-analysis of 13 studies showed no significant association between PPI use and overall mortality (RR 1.09, 95% CI: 0.94-1.26, P = 0.23, I2 = 60%). CONCLUSION: As there are conflicting and inconsistent data regarding the adverse clopidogrel-PPI interaction, clinicians should focus on potential harm from ulcers/haemorrhage before deciding to omit PPIs in patients taking clopidogrel.
Kwok et al. (2010) conducted a meta-analysis in patients taking clopidogrel (n=93,278). Proton pump inhibitors (PPI) vs. Without concomitant PPI was evaluated on overall mortality (RR 1.09, 95% CI 0.94-1.26, p=0.23). Concomitant use of proton pump inhibitors in patients taking clopidogrel was not significantly associated with overall mortality (RR 1.09; 95% CI 0.94-1.26; P=0.23).