Platelet activity associated with concomitant use of clopidogrel and proton pump inhibitors in children with cardiovascular disease.

Journal Article (Journal Article;Multicenter Study)

CONTEXT: In adults with acute coronary syndrome, decreased platelet inhibition associated with concomitant use of clopidogrel and proton pump inhibitors (PPI) has been reported. OBJECTIVE: To evaluate platelet activity associated with PPI + clopidogrel vs. clopidogrel alone in children enrolled in the Platelet Inhibition in Children On cLOpidogrel (PICOLO) trial of clopidogrel in children with a cardiac condition at risk for arterial thrombosis. DESIGN: Patients 0-24 m randomized to active therapy in the PICOLO trial were included in the present analysis. Platelet aggregation inhibition at baseline and steady state were evaluated in patients taking clopidogrel + PPI vs. clopidogrel only in the overall cohort and sub-group of clopidogrel responders. RESULTS: A total of 49 patients were included (44 clopidogrel only, five clopidogrel + PPI); median age 38 days (interquartile range [IQR] 17-157 days). The majority of patients in each group had undergone systemic-to-pulmonary artery shunt. Compared with the clopidogrel group, patients in the clopidogrel + PPI group had a trend toward lower percent inhibition of maximum extent of platelet aggregation overall (median 6%, IQR 0-44% vs. 49%, IQR 19-63%, P= 0.09), and a significant reduction in the clopidogrel responders sub-group (median 25%, IQR 3-45% vs. 53%, IQR 38-65%, P= 0.04). There was no difference in percent inhibition of rate of platelet aggregation. CONCLUSIONS: Concomitant use of PPI + clopidogrel may be associated with decreased platelet inhibition in children with cardiac disease. Further study in a larger population and assessment of associated clinical outcomes is warranted.

Full Text

Duke Authors

Cited Authors

  • Pasquali, SK; Yow, E; Jennings, LK; Li, JS

Published Date

  • November 2010

Published In

Volume / Issue

  • 5 / 6

Start / End Page

  • 552 - 555

PubMed ID

  • 21106014

Pubmed Central ID

  • PMC3036010

Electronic International Standard Serial Number (EISSN)

  • 1747-0803

Digital Object Identifier (DOI)

  • 10.1111/j.1747-0803.2010.00461.x


  • eng

Conference Location

  • United States