Hemoglobin is an independent predictor of improvement exercise tolerance in male patients with non-ischemic cardiomyopathy

Exercise intolerance is a symptom of chronic heart failure (CHF). The magnitude of exercise tolerance, as measured by peak oxygen uptake (peak VO 2 ), is strongly associated with prognosis in patients with CHF. We aimed to evaluate the factors associated with improved exercise tolerance in patients...

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Bibliographic Details
Published in:Heart and vessels 2024-05, Vol.39 (5), p.412-426
Main Authors: Tanihata, Akiko, Shibata, Atsushi, Yoshida, Toshitake, Kitada, Ryoko, Izumiya, Yasuhiro, Fukuda, Daiju
Format: Article
Language:English
Subjects:
Biomedical Engineering and Bioengineering
Cardiac Surgery
Cardiology
Cardiomyopathies - diagnosis
Cardiomyopathy
Congestive heart failure
Exercise Test
Exercise Tolerance
Heart Failure - diagnosis
Hemoglobin
Hemoglobins
Humans
Ischemia
Male
Males
Medicine
Medicine & Public Health
Original Article
Oxygen Consumption
Oxygen uptake
Prospective Studies
Rank tests
Regression analysis
Statistical analysis
Stroke Volume
Vascular Surgery
Ventricular Function, Left
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Summary:Exercise intolerance is a symptom of chronic heart failure (CHF). The magnitude of exercise tolerance, as measured by peak oxygen uptake (peak VO 2 ), is strongly associated with prognosis in patients with CHF. We aimed to evaluate the factors associated with improved exercise tolerance in patients with HF. In this prospective study, we recruited patients who were diagnosed with non-ischemic cardiomyopathy between September 2017 and September 2021. All patients underwent cardiopulmonary exercise testing at discharge and 6 months after enrollment. The patients were stratified according to whether peak VO 2 was increased or not at 6 months. One hundred patients with a reduced left-ventricular ejection fraction (LVEF 
ISSN:0910-8327
1615-2573
DOI:10.1007/s00380-024-02358-w