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Low prevalence of heparin-induced thrombocytopenia after cardiac surgery in Thai patients.
MedLine Citation:
PMID:  25204999     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
INTRODUCTION: Heparin induced-thrombocytopenia (HIT) has been well recognized in Western countries. However, there are no data in the Thai population. We therefore investigated the prevalence of anti-platelet factor 4 (PF4)/heparin antibodies, HIT, and its thrombotic complications in Thai patients undergoing cardiac surgery using unfractionated heparin.
MATERIALS AND METHODS: Seventy-three consecutive patients were prospectively enrolled in this study. Blood samples before operation and week 1, week 2, and week 3 after operation were collected from each patient for HIT antibody screening by enzyme-linked immunosorbent assay using IgG antibody specific to the PF4/heparin complex. Positive samples were further analyzed by (14)C-serotonin release assay. Complete blood count was performed daily during the first week, then weekly for 3weeks.
RESULTS: No patient had detectable anti-PF4/heparin antibodies at baseline. Five patients sero-converted during the course of the study for anti-PF4/heparin IgG: 3 (4.1%) at week 1, 4 (5.5%) at week 2, and 5 (6.8%) at week 3 after surgery. However, none of these patients had anti-PF4/heparin antibodies that resulted in (14)C-serotonin release to be considered clinically significant antibodies. Post-operative thrombocytopenia after the operation was found in 35 patients (47.9%), but was not considered to be caused by HIT. Thromboembolic events occurred in 3 patients (4.1%) during follow up; however, none of these patients had positive PF4/heparin antibody tests.
CONCLUSIONS: Our study represents the first study to examine Thai patients exposed to heparin in the context of cardiac surgery. We found a lower prevalence of positive anti-PF4/heparin antibodies and clinical HIT than previously published studies.
Authors:
Kochawan Boonyawat; Pantep Angchaisuksiri; Katcharin Aryurachai; Suchart Chaiyaroj; Zohra Ahmadi; Beng Hock Chong
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-8-28
Journal Detail:
Title:  Thrombosis research     Volume:  -     ISSN:  1879-2472     ISO Abbreviation:  Thromb. Res.     Publication Date:  2014 Aug 
Date Detail:
Created Date:  2014-9-10     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0326377     Medline TA:  Thromb Res     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2014 Elsevier Ltd. All rights reserved.
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