Objective: To determine the effect of proton pump inhibitor (PPI) on in-stent restenosis (ISR) in patients receiving clopidogrel therapy.
Methods: Total 439 patients underwent percutaneous coronary intervention (PCI) were enrolled in the study,including 250 post-PCI patients discharged on clopidogrel alone and 189 patients discharged on clopidogrel with PPI. The in-stent restenosis (ISR) ratio of the patients in these two groups were observed.
Results: During a mean follow-up period of (13 ± 5.9) months, the post-PCI patients discharged on concomitant clopidogrel-PPI therapy had higher risk of ISR than those discharged on clopidogrel alone (19.6% Compared with 8%, P<0.001).
Conclusion: Concomitant use of clopidogrel and PPI after hospital discharge would increase the risk of ISR for post-PCI patients.