@misc{10818/63289,
year = {2024},
url = {http://hdl.handle.net/10818/63289},
abstract = {Introduction: Cardiorespiratory exercise testing is a non-invasive alternative in the assessment of subjects with heart failure. Objective: To evaluate the validity of ventilatory equivalents for carbon dioxide (VE/VCO2) as a predictor of left ventricular ejection fraction (LVEF) compared to peak oxygen consumption. Methods: Cross-sectional analytical study in patients undergoing cardiopulmonary exercise testing and transthoracic echocardiography. The study was divided into a group with reduced LVEF < 40% and preserved ≥ 40%. Bivariate analysis comparing qualitative variables with the chi-square test and quantitative variables with Student's t-test was performed. A Receiver Operating Characteristic (ROC) curve was constructed to evaluate the discriminatory capacity between ventilatory equivalent for carbon dioxide and peak oxygen pulse. Results: The final analysis included 138 patients. In patients with reduced LVEF, peak oxygen consumption averaged 1.6 L/min (SD ± 0.68) compared to 1.7 L/min (SD ± 0.66) in the control group (p= 0.513). VE/VCO2 during ventilatory threshold and peak exercise averaged 38.4 (SD ± 7.38) and 44.6 (SD ± 8.24), respectively. The discriminatory performance of VE/VCO2 versus peak oxygen consumption was 0.737 (95% CI: 0.596-0.878; p= 0.008) in patients with reduced LVEF. Conclusions: VE/VCO2 is a reliable predictor of normal or reduced LVEF and performs well compared to peak oxygen consumption. © 2024, Editorial Ciencias Medicas. All rights reserved.},
publisher = {Revista Cubana de Medicina Militar},
title = {Minute ventilation in cardiorespiratory exercise and its relationship with ventricular ejection fraction},
author = {Bastidas-Goyes A. and Tuta-Quintero E. and Botero J.D. and Rosas D.B. and Prieto D. and Rubio D. and López C. and Hincapie G.A. and Mantilla B. and Brito A. and Vargas T. and Forero S. and Villarraga L. and Giraldo A. and Briceño M. and Porras A.},
}