AUTHOR=Kim Minkwan , Bae SungA , Park Jin Hye , Jung In Hyun 

TITLE=Relative importance of left atrial reservoir strain compared with components of the HFA-PEFF score: a cross-sectional study

JOURNAL=Frontiers in Cardiovascular Medicine

VOLUME=Volume 10 - 2023

YEAR=2023

URL=https://www.frontiersin.org/journals/cardiovascular-medicine/articles/10.3389/fcvm.2023.1213557

DOI=10.3389/fcvm.2023.1213557

ISSN=2297-055X

ABSTRACT=Background: The relative importance of the left atrial reservoir strain (LASr) regarding the Heart Failure Association Pre-test assessment, Echocardiography and natriuretic peptide, Functional testing, Final etiology (HFA-PEFF) score, a diagnostic tool for patients with heart failure with preserved ejection fraction (HFpEF), is unclear. We aimed to identify the relative importance of LASr compared with variables associated with HFpEF and HFA-PEFF score.
Methods: Between August 2021 and July 2022, we obtained data retrospectively from the participants visiting a single cardiovascular center with subjective symptom of heart failure, such as dyspnea or chest discomfort. In all, 2,712 participants with sinus rhythm and ejection fraction more than 50% were enrolled. Multivariable logistic regression analysis, random forest analysis, and supervised learning algorithm were performed to identify the relative importance of LASr on the HFA-PEFF score.
Results: The average HFA-PEFF score was 2.4 ± 1.6 points. Two hundred and thirty-eight participants had 5 or 6 points. LASr showed a moderate correlation with the HFA-PEFF score (r=-0.50, p<0.001). Impaired LASr <25.2% was an independent variable affecting high HFA-PEFF score with traditional diastolic function parameters and components of HFA-PEFF diagnostic algorithm. The odds ratio ([OR] 1.74, 95% confidence interval [CI] 1.23–2.47) for LASr was higher when compared to that of left ventricular global longitudinal strain (OR 1.59, 95% CI 1.14–2.21), septal E/e’ (OR 1.23, 95% CI 0.85–1.77), and relative wall thickness (OR 1.20, 95% CI 0.76–1.89). LASr was also a relatively more important variable to estimate high HFA-PEFF score than TR-Vmax, septal E/e’, septal e’, left ventricular mass index, and relative wall thickness, the major echocardiographic components of the HFA-PEFF score.
Conclusions: LASr is an important factor with components of the HFA-PEFF score and is a useful tool to assess patients with HFpEF.