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Ann Lab Med. 2018 Sep;38(5):413-419. English. Original Article. https://doi.org/10.3343/alm.2018.38.5.413
Lim HH , Li S , An GD , Woo KS , Kim KH , Kim JM , Kim MH , Han JY .
Department of Laboratory Medicine, Dong-A University College of Medicine, Busan, Korea. jyhan@dau.ac.kr
Department of Nephrology, Heilongjiang Academy of Traditional Chinese Medicine, Harbin, China.
Department of Cardiology, Dong-A University College of Medicine, Busan, Korea.
Abstract

Background

Clopidogrel is one of the most commonly used anti-platelet agents in cardiovascular diseases. We analyzed the relationship between the platelet function analyzer (PFA)-200 P2Y (INNOVANCE PFA-200 System, Siemens Healthcare, Germany) results and occurrence of major adverse cardiac events (MACEs) in Korean patients with recent-onset acute coronary syndrome (ACS) taking clopidogrel.

Methods

Between August 2013 and June 2016, we prospectively enrolled 106 patients with recent-onset ACS who had been treated with clopidogrel. We obtained blood samples and measured closure time (CT) using the PFA-200 P2Y test. Patients were divided into two groups on the basis of a CT cut-off value of 106 seconds. We compared patient characteristics and various MACEs that occurred during the follow-up period.

Results

The CTs for 78 patients exceeded the cut-off value. At the time of these analyses, 11 patients had been diagnosed with MACEs. In the time-to-event analysis, there was a difference between the two groups (P < 0.001). After adjusting other variables associated with MACE occurrence, CT value was the strongest predictor of MACEs, with a 7.30-fold occurrence risk (P=0.002).

Conclusions

We found a strong relationship between CT and MACE risk in Korean patients with recent-onset ACS taking clopidogrel. Accordingly, PFA-200 P2Y results could be used as a predictive marker for MACE risk in such patients.

Copyright © 2019. Korean Association of Medical Journal Editors.