Neil A. Goldenberg, MD; Linda Jacobson, MT; Marilyn J. Manco-Johnson, MD
Acknowledgments: The authors thank Chris Bombardier for assistance in study coordination and Chris McKelvey and Sue Hurwitz for their technical expertise in performing the PFA-100 testing. They also thank William E. Hathaway, MD, and Philip Altus, MD, for valued commentary on the manuscript and the study participants for their contribution to this research.
Potential Financial Conflicts of Interest: None disclosed.
Requests for Single Reprints: Neil Goldenberg, MD, The Mountain States Regional Hemophilia and Thrombosis Center, University of Colorado Health Sciences Center, PO Box 6507, Mail Stop F416, Aurora, CO 80045-0507; e-mail, email@example.com.
Current Author Addresses: Dr. Goldenberg, Ms. Jacobson, and Dr. Manco-Johnson: Mountain States Regional Hemophilia and Thrombosis Center, University of Colorado Health Sciences Center, PO Box 6507, Mail Stop F416, Aurora, CO 80045-0507.
Author Contributions: Conception and design: N.A. Goldenberg, L. Jacobson, M.J. Manco-Johnson.
Analysis and interpretation of the data: N.A. Goldenberg, L. Jacobson, M.J. Manco-Johnson.
Drafting of the article: N.A. Goldenberg, L. Jacobson.
Critical revision of the article for important intellectual content: N.A. Goldenberg, L. Jacobson, M.J. Manco-Johnson.
Final approval of the article: N.A. Goldenberg, L. Jacobson, M.J. Manco-Johnson.
Provision of study materials or patients: N.A. Goldenberg, M.J. Manco-Johnson.
Statistical expertise: N.A. Goldenberg.
Obtaining of funding: M.J. Manco-Johnson (local funding).
Administrative, technical, or logistic support: N.A. Goldenberg, L. Jacobson, M.J. Manco-Johnson.
Collection and assembly of data: N.A. Goldenberg, L. Jacobson.
Despite a paucity of evidence, clinicians routinely advise that patients discontinue using nonsteroidal anti-inflammatory drugs (NSAIDs), including ibuprofen, at least 1 week before most surgical procedures.
To define the duration of ibuprofen-induced platelet dysfunction.
Prospective cohort study.
11 healthy adult volunteers.
Individuals were tested at baseline and serially after completion of a 7-day course of ibuprofen (600 mg orally every 8 hours). The platelet function analyzer (PFA-100, Dade Behring, Newark, Delaware), a test that has replaced the bleeding time in many clinical settings, was used.
All participants exhibited normal platelet function before starting ibuprofen. Platelet dysfunction was apparent after completion of the ibuprofen course in 7 of the 11 participants and normalized by 24 hours after the last ibuprofen dose.
The sample size in this study was small, and no participants had a major illness. Correlation between PFA-100 results and clinical bleeding has not been established.
Platelet function seems to normalize within 24 hours after cessation of regular ibuprofen use in healthy individuals. Further studies are warranted to provide a rational basis for timing of NSAID withdrawal in a range of patients undergoing surgery.
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Goldenberg NA, Jacobson L, Manco-Johnson MJ. Brief Communication: Duration of Platelet Dysfunction after a 7-Day Course of Ibuprofen. Ann Intern Med. 2005;142:506-509. doi: 10.7326/0003-4819-142-7-200504050-00009
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Published: Ann Intern Med. 2005;142(7):506-509.
Coagulopathies, Hematology/Oncology, Platelet Disorders.
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