Recurrent cardiac ischemic events early after discontinuation of short-term heparin treatment in acute coronary syndromes - Results from the thrombolysis in myocardial infarction (TIMI) 11B and efficacy and safety of subcutaneous enoxaparin in non-Q-wave coronary events (ESSENCE) studies

被引:21
作者
Bijsterveld, NR
Peters, RJG
Murphy, SA
Bernink, PJLM
Tijssen, JGP
Cohen, M
机构
[1] Acad Med Ctr, Dept Cardiol, NL-1100 DD Amsterdam, Netherlands
[2] Beth Israel Deaconess Med Ctr, Dept Cardiol, Newark, NJ USA
[3] Martini Hosp, Dept Cardiol, Groningen, Netherlands
[4] TIMI Data Coordinating Ctr, Boston, MA USA
关键词
D O I
10.1016/j.jacc.2003.05.014
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
OBJECTIVES The aim of this study was to determine whether discontinuation of low-molecular-weight heparin (LMWH) treatment results in a clustering of cardiac ischemic events as previously observed after cessation of unfractionated heparin (UFH) in acute coronary syndrome (ACS) patients. BACKGROUND Clinical trials in patients with ACS have shown early recurrent ischemic events after discontinuation of UFH treatment. We analyzed whether LMWE cessation also results in early ischemic recurrence events and if continuation of a fixed-dose LMWH prevents this complication. METHODS The combined incidence of death, myocardial infarction, or urgent revascularization in the first seven days after discontinuation of UFH (n = 3,012), short-term enoxaparin 1 mg/kg subcutaneously twice a day (n = 2,011), and short-term enoxaparin followed by prolonged enoxaparin 60 mg subcutaneously twice a day (n = 1,075) was analyzed from the combined Thrombolysis In Myocardial Infarction (TIMI) 11B/Efficacy and Safety of Subcutaneous Enoxaparin in Non-Q-Wave Coronary Events (ESSENCE) database in a per patient analysis. RESULTS The cessation of both UFH and short-term enoxaparin resulted in a similar clustering of recurrent ischemic events on the first day, with an incidence of the primary end point of 2.8% in both groups. Of all recurrent events in the first week after cessation, 40% occurred in the first 24 h. The continuation of a fixed-dose enoxaparin treatment prevented this early excess, with a first day incidence of 0.4% (p < 0.0001). The TIMI risk score characteristics predicted the incidence of early rebound ischemic events. CONCLUSIONS There is significant clustering of recurrent ischemic events within 24 h after cessation of both short-term UFH and enoxaparin treatment, and patients should be carefully monitored during that period. This early rebound may be prevented by continuation of a fixed dose of enoxaparin. (J Am Coll Cardiol 2003-,42:2083-9) (C) 2003 by the American College of Cardiology Foundation.
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页码:2083 / 2089
页数:7
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