Publications by authors named "Olivia McNamee"
Background: Left atrial (LA) function contributes to the augmentation of cardiac output during exercise. However, LA response to exercise in patients with atrial fibrillation (AF) is unknown. We explored the LA mechanical response to exercise and the association between LA dysfunction and exercise intolerance.
View Article and Find Full Text PDFBackground: Atrial fibrillation (AF) and heart failure with preserved ejection fraction (HFpEF) commonly coexist. We hypothesize that patients with symptomatic AF but without overt clinical HF commonly exhibit subclinical HFpEF according to established hemodynamic criteria.
Objectives: The authors sought to use invasive hemodynamics to investigate the prevalence and implications of subclinical HFpEF in AF ablation patients.
Article Synopsis
- - The study investigates how cardiorespiratory fitness (CRF) and obesity impact the mechanical function of the left atrium (LA) in patients with atrial fibrillation (AF).
- - Results reveal that higher CRF is linked to better LA function and less stiffness, while obesity leads to larger LA volumes but does not significantly affect LA function.
- - The findings suggest that promoting higher CRF could benefit AF patients by improving their LA mechanics, despite the negative implications of obesity on heart structure.