| Autor: |
Ricardo S. Mishima, Jonathan P. Ariyaratnam, Bradley M. Pitman, Varun Malik, Mehrdad Emami, Olivia McNamee, Michael B. Stokes, Dennis H. Lau, Prashanthan Sanders, Adrian D. Elliott |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
International Journal of Cardiology: Heart & Vasculature, Vol 42, Iss , Pp 101083- (2022) |
| Druh dokumentu: |
article |
| ISSN: |
2352-9067 |
| DOI: |
10.1016/j.ijcha.2022.101083 |
| Popis: |
Background: Low cardiorespiratory fitness (CRF) and obesity are related to the development and maintenance of atrial fibrillation (AF). The aim of this study was to determine the association between CRF, obesity and left atrial (LA) mechanical parameters in patients with AF. Methods: A cohort of 154 consecutive paroxysmal and persistent AF patients (Age: 62 ± 10, 26% female) referred for exercise stress testing and transthoracic echocardiography were included. We included patients in sinus rhythm with preserved left ventricular ejection fraction who were able to complete a maximal exercise test. Left atrial strain in the reservoir (LASr), booster (LASb) and conduit (LASc) phases were assessed using dedicated software. LA stiffness, emptying fraction (LAEF) and LA to LV ratio were calculated using previously described formulas. Results: CRF was positively associated with LAEF (β = 1.3, 95% CI 0.1–2.3, p = 0.02), reservoir (β = 1.5, 95% CI 0.9–2.1, p |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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