Measuring Left Ventricular Peak Longitudinal Systolic Strain from a Single Beat in Atrial Fibrillation: Validation of the Index Beat Method

Background It is traditionally difficult to estimate left ventricular (LV) systolic function in atrial fibrillation (AF). The aim of this study was to validate the use of an index beat, the beat after the nearly equal preceding (RR1) and pre-preceding (RR2) intervals, for the measurement of LV peak...

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Veröffentlicht in:	Journal of the American Society of Echocardiography 2012-09, Vol.25 (9), p.945-952
Hauptverfasser:	Lee, Chee-Siong, MD, Lin, Tsung-Hsien, PhD, Hsu, Po-Chao, MD, Chu, Chun-Yuan, MD, Lee, Wen-Hsien, MD, Su, Ho-Ming, MD, Voon, Wen-Chol, MD, Lai, Wen-Ter, MD, Sheu, Sheng-Hsiung, MD
Format:	Artikel
Sprache:	eng
Schlagworte:	Aged Atrial fibrillation Atrial Fibrillation - diagnostic imaging Atrial Fibrillation - physiopathology Cardiovascular Chi-Square Distribution Echocardiography, Doppler - methods Female Heart Rate - physiology Humans Image Interpretation, Computer-Assisted Index beat Left ventricular systolic function Linear Models Male Myocardial Contraction - physiology Prospective Studies Regression Analysis Reproducibility of Results Risk Assessment Systole - physiology Systolic strain Ventricular Dysfunction, Left - diagnostic imaging Ventricular Dysfunction, Left - physiopathology
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Zusammenfassung:	Background It is traditionally difficult to estimate left ventricular (LV) systolic function in atrial fibrillation (AF). The aim of this study was to validate the use of an index beat, the beat after the nearly equal preceding (RR1) and pre-preceding (RR2) intervals, for the measurement of LV peak longitudinal systolic strain (PLSS). The difference between RR1 and RR2 intervals of the index beat must be
ISSN:	0894-7317 1097-6795
DOI:	10.1016/j.echo.2012.06.006