Abstract

Proton pump inhibitors (PPI) are frequently used to prevent upper gastrointestinal bleeding (UGIB) in patients receiving dual-antiplatelet therapy (DAPT) with aspirin and clopidogrel. However, the concomitant therapy of PPI and DAPT has been associated with a decreased effect of the antiplatelet drugs and an increased risk of major adverse cardiovascular events (MACE). It has been suggested that histamine H2 receptor antagonists (H2RA) can be used as alternatives to PPI to prevent UGIB during DAPT without an increase in the risk of MACE. We tested this hypothesis in a retrospective cohort study including patients without a prior history of upper gastrointestinal events. We examined the incidence of UGIB and MACE in 296 patients treated with H2RA (H2RA group) and 447 patients not treated with H2RA (control group) during DAPT with aspirin and clopidogrel after drug-eluting stent implantation. The patients treated with PPI were excluded. In the 1-year follow-up, UGIB occurred in 2 patients (0.7%) in the H2RA group and 12 (2.7%) in the control group. The incidence of UGIB was significantly different between the two groups (p = 0.049 in log-rank test). MACE occurred in 31 patients (10.5%) in the H2RA group and in 54 patients (12.1%) in the control group, and the incidence was not significantly different (p = 0.447 in logrank test). Thus, H2RA may be effective safe alternatives to PPI during DAPT in patients without a prior history of upper gastrointestinal events.

Author Details

Authors

• Takeo Yasu¹,²,³
• Noriko Sato⁴
• Yosuke Kurokawa²
• Shigeru Saito⁵
• Masaru Shoji³

Departments

• ¹ Department of Pharmacy, Shonan Kamakura General Hospital, Kanagawa,
• ² Department of Pharmacy, The Research Hospital, The Institute of Medical Science, The University of Tokyo,
• ³ Department of Pharmacodynamics, Meiji Pharmaceutical University, Tokyo,
• ⁴ Department of Pharmacy, Hayama Heart Center, and
• ⁵ Department of Cardiology and Catheterization Laboratory and Heart Center, Shonan Kamakura General Hospital, Kanagawa, Japan

Address

Takeo Yasu, MSc
The Research Hospital
The Institute of Medical Science
The University of Tokyo
4-6-1, Shirokanedai, Minatoku, Tokyo 108-8639, Japan
Email: [email protected]

Citation