Impact of proton pump inhibitors and dual antiplatelet therapy cessation on outcomes following percutaneous coronary intervention: Results From the PARIS Registry

Jaya Chandrasekhar, Sameer Bansilal, Usman Baber, Samantha Sartori, Melissa Aquino, Serdar Farhan, Birgit Vogel, Michela Faggioni, Gennaro Giustino, Cono Ariti, Antonio Colombo, Alaide Chieffo, Annapoorna Kini, Richard Saporito, C. Michael Gibson, Bernhard Witzenbichler, David Cohen, David Moliterno, Thomas Stuckey, Timothy HenryStuart Pocock, George Dangas, P. Gabriel Steg, Roxana Mehran

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


Background: Proton pump inhibitors (PPI) may decrease the availability of clopidogrel by competitive antagonism, leading to a potential increase in ischemic events. Methods: We evaluated patients from the all-comer PARIS registry treated with dual antiplatelet therapy (DAPT) with aspirin and clopidogrel following coronary stenting for outcomes stratified by PPI use. Two-year major adverse cardiovascular events (MACE), composite of cardiac death, myocardial infarction, definite or probable stent thrombosis or target lesion revascularization (TLR), and net adverse cardiac events (NACE), composite of MACE or Bleeding Academic Research consortium (BARC) type 3 or 5 bleeding were assessed. We also explored associations between PPI use and patterns of 2-year DAPT cessation. Results: The cohort comprised 4635 patients (23% PPI users) with mean age 64.4 ±11.4 years. Two year adjusted risk of MACE (HR: 1.27, 95% CI: 1.04–1.55), NACE (HR: 1.21, 95% CI: 1.01–1.44) and TLR (HR: 1.33, 95% CI: 1.04–1.71) were significantly higher in PPI users vs. non-users, without a difference in bleeding. Although the incidence of 2-year DAPT discontinuation and interruption was similar, DAPT disruption was significantly lower among PPI users vs. non-users (10.0% vs. 14.7%, P <0.0001). Compared to non-PPI users on continued DAPT, disruption was associated with higher MACE in both PPI users (HR: 2.34, 95% CI: 1.38–3.97) and non-users (HR: 1.41, 95% CI: 1.02–1.94) but greater BARC 3,5 bleeding only in non-PPI users (HR: 2.06, 95% CI: 1.21–3.51). Conclusions: In clopidogrel treated PCI patients, the 2-year adjusted risk of MACE and NACE was significantly higher in PPI users driven by higher TLR compared to non-PPI users, without a difference in bleeding. PPI use was associated with lower incidence of DAPT disruption without an increase in disruption related bleeding compared to non-PPI users on DAPT.

Original languageEnglish
Pages (from-to)E217-E225
JournalCatheterization and Cardiovascular Interventions
Issue number7
StatePublished - 1 Jun 2017


  • P2Y12 receptor inhibitor
  • dual antiplatelet therapy cessation
  • percutaneous coronary intervention
  • proton pump inhibitor
  • thienopyridine


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