Establishing a novel model to assess exercise capacity in chronic heart failure based on stress echocardiography.

ABSTRACT:

Aims

The aim of this study was to develop a simple, fast and efficient clinical diagnostic model, composed of exercise stress echocardiography (ESE) indicators, of the exercise capacity of patients with chronic heart failure (CHF) by comparing the effectiveness of different classifiers.

Methods and results

Eighty patients with CHF (aged 60 ± 11 years; 78% male) were prospectively enrolled in this study. All patients underwent both cardiopulmonary exercise test (CPET) and ESE and were divided into two groups according to the VE/VCO₂ slope: 30 patients with VE/VCO₂ slope ventilation classification (VC)1 (i.e., VE/VCO₂ slope < 30) and 50 patients with VC2 (i.e., VE/VCO₂ slope ≥ 30). The analytical features of all patients in the four

SUBMITTER: Cen H 

PROVIDER: S-EPMC11631253 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature