Moderators of peak respiratory exchange ratio during exercise testing in children and adolescents with Fontan physiology.
Patricia M CareyHung-Wen YehKaroline KrzywdaKelli M TesonJessica S WatsonSuma GoudarDaniel ForshaDavid A WhitePublished in: Cardiology in the young (2023)
Demographic, physical activity, and cardiopulmonary exercise test measures could not classify meeting peak exercise criteria (respiratory exchange ratio ≥ 1.1) at a satisfactory accuracy. Correlations between respiratory exchange ratio and oxygen pulse suggest the augmentation of stroke volume with exercise may affect the Fontan patient's ability to sustain high-intensity exercise.