Mechanism of preserved exercise capacity in patients with reduced left ventricular function
نویسندگان
چکیده
منابع مشابه
Reduced left ventricular functional reserve in hypertensive patients with preserved function at rest.
In many hypertensive patients, left ventricular pump function is normal at rest but abnormal during exercise. Myocardial dysfunction or altered left ventricular loading may be responsible for this finding. To verify the hypothesis of impaired myocardial functional reserve in the hypertensive heart, we assessed the response of stress-adjusted midwall shortening to graded, low-dose dobutamine inf...
متن کاملLeft ventricular mechanical dyssynchrony impairs exercise capacity in patients with coronary artery disease with preserved left ventricular systolic function and a QRS duration ≤ 120 ms.
BACKGROUND Left ventricular (LV) mechanical dyssynchrony can lead to impairment of LV function and is associated with adverse clinical outcomes in coronary artery disease (CAD) patients. The impact of LV dyssynchrony on exercise capacity (EC) in patients with CAD was investigated. METHODS AND RESULTS An echocardiographic examination with tissue Doppler imaging and exercise treadmill testing i...
متن کاملLeft ventricular global longitudinal strain is associated with exercise capacity in failing hearts with preserved and reduced ejection fraction
AIMS Heart failure patients with reduced and preserved left ventricular (LV) ejection fraction (EF) show reduced exercise capacity. We explored the relationship between exercise capacity and systolic and diastolic myocardial function in heart failure patients. METHODS AND RESULTS Exercise capacity, by peak oxygen uptake (VO2), was assessed in 100 patients (56 ± 12 years, NYHA functional class...
متن کاملExercise capacity in patients with severe left ventricular dysfunction.
Normal or near-normal exercise capacity has been thought to reflect normal left ventricular function. Many compensatory mechanisms could preserve exercise capacity in patients with severe left ventricular dysfunction. We evaluated exercise capacity using a treadmill exercise test in 26 patients with severe left ventricular dysfunction defined by a left ventricular ejection fraction of 30% or le...
متن کاملEchocardiographic Evaluation of left Ventricular Function and Geometry in Pediatric Patients with Kidney Transplantation
Extended abstract Echocardiographic Evaluation of Left Ventricular Function and Geometry in Pediatric Patients with Kidney Transplantation Cardiovascular disease (CVD) is an important, leading cause of mortality and morbidity in patients with chronic kidney disease (CKD) as well as in renal transplant recipients. Cardiovascular complications become more important in children because of the i...
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ژورنال
عنوان ژورنال: Journal of the American College of Cardiology
سال: 1996
ISSN: 0735-1097
DOI: 10.1016/s0735-1097(96)81731-1