Pattern of ventilation during exercise in chronic heart failure
نویسندگان
چکیده
منابع مشابه
Pattern of ventilation during exercise in chronic heart failure.
OBJECTIVE To determine the pattern of the abnormal ventilatory response in heart failure and how it relates to symptoms by looking at tidal volume (VT) and frequency (f) during exercise. METHODS 45 patients with heart failure and 21 controls underwent maximal treadmill based exercise testing with metabolic gas exchange analysis. The relation of ventilation (VE) to VT was plotted to look for a...
متن کاملPerfusion/ventilation mismatch during exercise in chronic heart failure: an investigation of circulatory determinants.
BACKGROUND The ventilatory cost of carbon dioxide (CO2) elimination on exercise (VE/VCO2) is increased in chronic heart failure (CHF). This reflects increased physiological dead space ventilation secondary to mismatching between perfusion and ventilation during exercise. The objectives of this study were to investigate the relation of this increased VE/VCO2 slope to the syndrome of CHF or to li...
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objectives the aim of this study was to investigate the relation between respiratory muscle strength and the severity of chf, and the influence of respiratory muscle strength on abnormal ventilation during exercise in chf patients. conclusions respiratory muscle strength is related to the severity of chf, and associated with rapid and shallow ventilation or excessive ventilation during exercise...
متن کاملPulmonary Congestion at Rest and Abnormal Ventilation During Exercise in Chronic Systolic Heart Failure
BACKGROUND In patients with chronic heart failure, abnormal ventilation at cardiopulmonary testing (expressed by minute ventilation-to-carbon dioxide production, or VE/VCO2 slope, and resting end-tidal CO2 pressure) may derive either from abnormal autonomic or chemoreflex regulation or from lung dysfunction induced by pulmonary congestion. The latter hypothesis is supported by measurement of pu...
متن کاملOscillatory ventilation during exercise in patients with chronic heart failure: clinical correlates and prognostic implications.
STUDY OBJECTIVES Although breathing disorders are often found in patients with chronic heart failure, exertional oscillatory ventilation (EOV) has been occasionally described. The aim of this study was to determine the prevalence, clinical characteristics, and outcome of patients with chronic heart failure and EOV. SETTING Cardiology division at tertiary-care hospital. STUDY POPULATION We s...
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ژورنال
عنوان ژورنال: Heart
سال: 2003
ISSN: 0007-0769
DOI: 10.1136/heart.89.6.610