* acute decompensated heart failure * recent myocardial infarction within the last 3 months * unstable angina pectoris * severe hypertension \> 180/110 mm hg * coagulopathy with international normalized ratio of prothrombin time \> 2.0 * moderate to severe aortic regurgitation * abdominal aortic aneurysm (\>5 mm) or dissection * arrhythmias that may interfere with triggering of eecp system (uncontrolled atrial fibrillation, flutter and very frequent premature ventricular contractions) * heart rate of \<35 or \>125 beats per minute * any surgical intervention within 6 weeks before eecp * recent cardiac catheterization (1-2 weeks) or arterial femoral puncture * severe peripheral arterial disease * severe venous disease (thrombophlebitis, prior or current deep vein thrombosis or pulmonary embolism) * severe chronic obstructive pulmonary disease * pregnancy or women of childbearing age who do not have a negative pregnancy test

* acute decompensated heart failure * recent myocardial infarction within the last 3 months * unstable angina pectoris * severe hypertension \> 180/110 mm hg * coagulopathy with international normalized ratio of prothrombin time \> 2.0 * moderate to severe aortic regurgitation * abdominal aortic aneurysm (\>5 mm) or dissection * arrhythmias that may interfere with triggering of eecp system (uncontrolled atrial fibrillation, flutter and very frequent premature ventricular contractions) * heart rate of \<35 or \>125 beats per minute * any surgical intervention within 6 weeks before eecp * recent cardiac catheterization (1-2 weeks) or arterial femoral puncture * severe peripheral arterial disease * severe venous disease (thrombophlebitis, prior or current deep vein thrombosis or pulmonary embolism) * severe chronic obstructive pulmonary disease * pregnancy or women of childbearing age who do not have a negative pregnancy test

acute decompensated heart failure recent myocardial infarction within the last 3 months unstable angina pectoris severe hypertension > 180/110 mm hg coagulopathy with international normalized ratio of prothrombin time > 2.0 moderate to severe aortic regurgitation abdominal aortic aneurysm (>5 mm) or dissection arrhythmias that may interfere with triggering of eecp system (uncontrolled atrial fibrillation, flutter and very frequent premature ventricular contractions) heart rate of <35 or >125 beats per minute any surgical intervention within 6 weeks before eecp recent cardiac catheterization (1-2 weeks) or arterial femoral puncture severe peripheral arterial disease severe venous disease (thrombophlebitis, prior or current deep vein thrombosis or pulmonary embolism) severe chronic obstructive pulmonary disease pregnancy or women of childbearing age who do not have a negative pregnancy test

acute decompensated heart failure recent myocardial infarction within the last 3 months unstable angina pectoris severe hypertension > 180/110 mm hg coagulopathy with international normalized ratio of prothrombin time > 2.0 moderate to severe aortic regurgitation abdominal aortic aneurysm (>5 mm) or dissection arrhythmias that may interfere with triggering of eecp system (uncontrolled atrial fibrillation, flutter and very frequent premature ventricular contractions) heart rate of <35 or >125 beats per minute any surgical intervention within 6 weeks before eecp recent cardiac catheterization (1-2 weeks) or arterial femoral puncture severe peripheral arterial disease severe venous disease (thrombophlebitis, prior or current deep vein thrombosis or pulmonary embolism) severe chronic obstructive pulmonary disease pregnancy or women of childbearing age who do not have a negative pregnancy test