منابع مشابه
Importance of Exercise Capacity
The measurement of left ventricular ejection fraction (LVEF) plays a key role in many strategies for managing patients after acute myocardial infarction. We tested the hypothesis that exercise capacity 1 month after myocardial infarction provides additional information in patients with a low LVEF and therefore assists in risk stratification. One hundred fifteen patients, with documented myocard...
متن کاملPreoperative Exercise Capacity
Forty-five symptomatic patients with aortic regurgitation underwent graded treadmill exercise testing before operation. Twenty-seven patients (group A) could not complete stage I of the National Institutes of Health exercise protocol because of limiting symptoms (exercise duration < 22.5 minutes); 18 patients (group B) completed this stage without limiting symptoms (exercise duration > 22.5 min...
متن کاملVagal determinants of exercise capacity
Indirect measures of cardiac vagal activity are strongly associated with exercise capacity, yet a causal relationship has not been established. Here we show that in rats, genetic silencing of the largest population of brainstem vagal preganglionic neurons residing in the brainstem's dorsal vagal motor nucleus dramatically impairs exercise capacity, while optogenetic recruitment of the same neur...
متن کاملRight Ventricle and Exercise Capacity
Almost 3 quarters of a century ago, an experimental dog model, involving the electrocautery ablation of the free wall of the right ventricle (RV), served as the basis for the contention that the RV serves functionally as a passive conduit. Clearly, our understanding of the RV has evolved over subsequent decades, and the prognostic significance of RV dysfunction is now recognized in a wide array...
متن کاملEffect of lung resection on exercise capacity and on carbon monoxide diffusing capacity during exercise.
OBJECTIVE To evaluate the effect of lung resection on lung function and exercise capacity values, including diffusion capacity of the lung for carbon monoxide (Dlco), during exercise, and to determine whether postoperative lung function, including exercise capacity and Dlco during exercise, could be predicted from preoperative lung function and the number of functional segments resected. DESI...
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ژورنال
عنوان ژورنال: Circulation
سال: 2003
ISSN: 0009-7322,1524-4539
DOI: 10.1161/01.cir.0000094408.38603.7e