Is the Corrected Carotid Flow Time a Clinically Acceptable Surrogate Hemodynamic Parameter for the Left Ventricular Ejection Time?

• DOI: 10.1016/j.ultrasmedbio.2023.12.013
• Publication Date: 2024-01-19T11:14:43Z
• Authors: Joris van Houte; Rob Eerdekens; Fokko Manning; Mariska te Pas; Saskia Houterman; Inge Wijnbergen; Leon Montenij; Pim Tonino; Arthur Bouwman
• Keywords: Ventricular outflow tract; Bland–Altman plot

ObjectiveThe corrected left ventricular ejection time (cLVET) comprises the phase from aortic valve opening to closure for heart rate. As a surrogate measure cLVET, carotid flow (ccFT) has been proposed in previous research. The aim of this study was assess clinical agreement between cLVET and ccFT dynamic setting.MethodsTwenty-five patients with severe stenosis (AS) were selected transcatheter replacement (TAVR). derived outflow tract (LVOT) common artery (CCA), respectively, using pulsed wave Doppler ultrasound. Bazett's (B) Wodey's (W) equations used calculate ccFT. Measurements performed directly before (T1) after (T2) TAVR. Correlation, Bland–Altman concordance analyses performed.ResultsCorrected LVET decreased T1 T2 (p < 0.001), relative reductions 11% 9% (W). Corrected 12% 10% correlation strong B (ρ = 0.74, p 0.001) W 0.81, 0.001). bias –39 ms –37 (W), upper lower levels 19 –98 5 –78 respectively. Trending ability good (concordance 96%) both W.ConclusionIn TAVR patients, acceptable, indicating that could serve as cLVET. setting. Twenty-five performed. W. In