Low molecular weight heparin decreases rebound ischemia in unstable angina or non-Q-wave myocardial infarction: the Canadian ESSENCE ST segment monitoring substudy
Shaun G. Goodman, MD, FACC*,
Aiala Barr, PhD*,
Anatoli Sobtchouk, MD*,
Marc Cohen, MD, FACC ,
Gregg J. Fromell, MD ,
Luc Laperrière, MD ,
Carol Hill, RN*,
Anatoly Langer, MD, FACC* for the Canadian Efficacy and Safety of Subcutaneous Enoxaparin in Non-Q-Wave Coronary Events (ESSENCE) ST Segment Monitoring Substudy Group
* Canadian Heart Research Center, Division of Cardiology, St. Michaels Hospital, University of Toronto, Toronto, Canada
Division of Cardiology, Hahnemann University Hospital, Philadelphia, Pennsylvania, USA
Covance Clinical Trials Research and Development, Inc., Princeton, New Jersey, USA
Fournier Pharma and Department of General Medicine, Hospital Center of the University of Montreal, Montreal, Quebec, Canada

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Figure 1 Flowchart showing disposition of patients.
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Figure 2 Kaplan-Meier plot of 1-year event-free survival from death or nonfatal myocardial (re)infarction among patients with (solid line, n = 87) and without (dashed line, n = 144) ST segment change (ischemia) during either initial or study drug discontinuation monitoring.
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Figure 3 Kaplan-Meier plot of 1-year event-free survival from death or nonfatal myocardial (re)infarction among heparin patients (solid lines): 1) with ST segment change (ischemia) during continuous monitoring (heavy solid line, n = 52) and 2) without ischemia during continuous monitoring (light solid line, n = 67) and among enoxaparin patients (dashed lines): 1) with ischemia (heavy dashed line, n = 35) and 2) without ischemia (light dashed line, n = 77).
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Figure 4 Kaplan-Meier plot of 1-year event-free survival from death or nonfatal myocardial (re)infarction among patients with ST segment shift on baseline 12-lead ECG (solid lines): 1) with ST segment change (ischemia) during continuous monitoring (heavy solid line, n = 44) and 2) without ischemia during continuous monitoring (light solid line, n = 41) and among patients without ST segment shift on baseline 12-lead ECG (dashed lines): 1) with ischemia (heavy dashed line, n = 43) and 2) without ischemia (light dashed line, n = 103).
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