Anesth Pain Med Search


Anesthetic Pharmacology
Anesthesia and Pain Medicine 2014;9(1):31-35.
Published online January 30, 2014.
Platelet function assay to determine the optimal preoperative cessation period of aspirin
Young Sung Kim, Il Ok Lee, Hye yoon Park, Ji hye Park, Byung Gun Lim, Heezoo Kim
Department of Anesthesiology and Pain Medicine, Korea University Guro Hospital, Korea University College of Medicine, Seoul, Korea.
Received: 24 September 2013   • Revised: 4 October 2013
This study was conducted to assess preoperative residual antiplatelet-induced platelet dysfunction using a platelet function assay to determine the optimal cessation period of aspirin during the preoperative period.
Patients older than 20 years, who were scheduled for elective surgery under general anesthesia, were enrolled prospectively. The last ingestion of the aspirin had occurred within the previous 10 days before surgery (aspirin 100 mg per day). No history of antiplatelet intake was documented in the control group. Platelet function was assessed using a platelet function analyzer-100 (PFA-100). Receiver operating characteristic (ROC) curves were plotted to determine the ability of aspirin cessation time in order to predict platelet function as assessed by the PFA. Patients were assigned to groups according to the period of aspirin discontinuation.
Two hundred patients were enrolled in this study (100 control group and 100 aspirin group). The mean PFA value of the control group was significantly lower than that of the treated groups. The areas under the ROC curve (0.65, P = 0.03) of aspirin cessation period to discriminate PFA prolongation were significant. There were significant decreases in PFA values when aspirin medication was discontinued for 7 days, but not when the intake was discontinued for 5 days.
Platelet function recovered if aspirin intake was discontinued > 7 days prior to surgery; therefore, in these patients, a preoperative platelet function test is not essential. However, the residual antiplatelet effect of aspirin should be assessed using the PFA in patients who discontinue aspirin less than 7 days prior to surgery.
Key Words: Aspirin, Platelet function test, Preoperative period
Share :
Facebook Twitter Linked In Google+ Line it
METRICS Graph View
  • 23,793 View
  • 18 Download
Related articles in Anesth Pain Med

Article category

Browse all articles >


Browse all articles >

Editorial Office
101-3503, Lotte Castle President, 109 Mapo-daero, Mapo-gu, Seoul 04146, Korea
Tel: +82-2-792-5128    Fax: +82-2-792-4089    E-mail:                

Copyright © 2024 by Korean Society of Anesthesiologists.

Developed in M2PI

Close layer
prev next