Impaired chronotropic response to physical activities in heart failure patients

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چکیده

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Impaired chronotropic response to physical activities in heart failure patients

BACKGROUND While exercise-based cardiac rehabilitation has a beneficial effect on heart failure hospitalization and mortality, it is limited by the presence of chronotropic incompetence (CI) in some patients. This study explored the feasibility of using wearable devices to assess impaired chronotropic response in heart failure patients. METHODS Forty patients with heart failure (left ventricu...

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Impaired Chronotropic Response to Exercise in Patients With Congestive Heart Failure

The mechanism responsible for the attenuated heart rate (HR) response to exercise in patients with congestive heart failure (CHF) was investigated in 46 normal subjects and 59 patients with CHF stratified by peak exercise oxygen consumption (Vo2). The peak exercise HR and the increment in HR from rest to peak exercise were decreased in CHF patients, and both correlated strongly with peak Vo2 (r...

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Impaired heart rate recovery and chronotropic incompetence in patients with heart failure with preserved ejection fraction.

BACKGROUND This study assessed the chronotropic response to exercise and heart rate (HR) recovery after exercise in a carefully phenotyped group of patients with heart failure with preserved left ventricular ejection fraction (HfpEF) and a control group of similar age and gender distribution. METHODS AND RESULTS We studied 41 patients with HfpEF, 41 healthy controls, and 16 hypertensive contr...

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Impaired Chronotropic Response to Exercise in Patients With Congestive Heart Failure Role of Postsynaptic j3-Adrenergic Desensitization

The mechanism responsible for the attenuated heart rate (HR) response to exercise in patients with congestive heart failure (CHF) was investigated in 46 normal subjects and 59 patients with CHF stratified by peak exercise oxygen consumption (Vo2). The peak exercise HR and the increment in HR from rest to peak exercise were decreased in CHF patients, and both correlated strongly with peak Vo2 (r...

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Impaired chronotropic response to exercise in patients with congestive heart failure. Role of postsynaptic beta-adrenergic desensitization.

The mechanism responsible for the attenuated heart rate (HR) response to exercise in patients with congestive heart failure (CHF) was investigated in 46 normal subjects and 59 patients with CHF stratified by peak exercise oxygen consumption (VO2). The peak exercise HR and the increment in HR from rest to peak exercise were decreased in CHF patients, and both correlated strongly with peak VO2 (r...

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ژورنال

عنوان ژورنال: BMC Cardiovascular Disorders

سال: 2017

ISSN: 1471-2261

DOI: 10.1186/s12872-017-0571-9