Document Detail

Clinical implications of thrombocytopenia among patients undergoing intra-aortic balloon pump counterpulsation in the coronary care unit.
MedLine Citation:
PMID:  20063298     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Thrombocytopenia Hypothesis: intra-aortic balloon pump (IABP)-associated thrombocytopenia is not associated with an increased risk of major bleeding or in-hospital death. Thrombocytopenia is a common adverse effect of the IABP. However, the clinical implications of IABP-associated thrombocytopenia are unknown.
METHODS: We assessed the incidence and predictors of thrombocytopenia, and the association between thrombocytopenia and relevant clinical end points, using prospectively collected data on 252 consecutive patients undergoing IABP in a single coronary care unit (CCU).
RESULTS: Anticoagulation with intravenous heparin was administered to 182 patients (72%). Baseline platelet counts were 232 000 +/- 96 000 mL, decreased to 154 000 +/- 74 000 mL at day 3, and recovered to baseline by day 8. Thrombocytopenia (nadir < 150 000 mL or > 50% reduction from baseline) occurred in 109 patients (43%), with a similar incidence among patients who received heparin and those who did not (45% vs 40%, P = 0.5). Independent predictors of thrombocytopenia were lower body weight, cardiogenic shock, and duration of IABP support. The incidence of both major bleeding and in-hospital death were higher among patients who developed thrombocytopenia than among those who did not (13.8% vs 4.2%, P = 0.01 and 28% vs 16%, P = 0.02, respectively). However, after controlling for confounding variables, thrombocytopenia was not an independent predictor of either major bleeding (odds ratio [OR]: 2.2, 95% confidence interval [CI]: 0.8-6.4, P = 0.1) or in-hospital death (OR: 1.5, 95% CI: 0.8-2.9, P = 0.3).
CONCLUSIONS: Among patients undergoing IABP in the CCU, thrombocytopenia is generally mild, appears to be unrelated to concomitant heparin use, and is not associated with an increased risk of major bleeding or in-hospital death.
Sion K Roy; Edward W Howard; Julio A Panza; Howard A Cooper
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Clinical cardiology     Volume:  33     ISSN:  1932-8737     ISO Abbreviation:  Clin Cardiol     Publication Date:  2010 Jan 
Date Detail:
Created Date:  2010-01-18     Completed Date:  2011-02-04     Revised Date:  2011-02-09    
Medline Journal Info:
Nlm Unique ID:  7903272     Medline TA:  Clin Cardiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  30-5     Citation Subset:  IM    
Copyright Information:
Copyright 2010 Wiley Periodicals, Inc.
Department of Medicine, Georgetown University Hospital, Washington, DC 20010, USA.
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MeSH Terms
Anticoagulants / adverse effects*,  therapeutic use
Body Weight
Confidence Intervals
Coronary Care Units
District of Columbia / epidemiology
Heparin / adverse effects*,  therapeutic use
Intra-Aortic Balloon Pumping / adverse effects*,  methods
Middle Aged
Odds Ratio
Platelet Count
Postoperative Hemorrhage / etiology
Prospective Studies
Risk Factors
Thrombocytopenia / epidemiology,  etiology*,  mortality
Reg. No./Substance:
0/Anticoagulants; 9005-49-6/Heparin

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