期刊
ULTRASOUND IN MEDICINE AND BIOLOGY
卷 46, 期 2, 页码 255-262出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.ultrasmedbio.2019.10.028
关键词
Atrial fibrillation; Echocardiography; Ventricular function; Index beat
Atrial fibrillation (AF) poses challenges in use of the echocardiogram to assess left ventricular (LV) function. The index beat method has been found to agree well with the average method. We aimed to assess the value of the index beat method in evaluation of LV function using the dual pulsed wave Doppler technique. Peak early diastolic mitral inflow velocity (E) and diastolic (e') and systolic (s') mitral annulus velocity were simultaneously obtained and measured beat-to-beat in patients with AK The index beat s' exhibited the best correlation (r = 0.96 and 0.92, respectively, for septal and lateral wall, both p values = 0.000) with the mean, while E/e' at the pre-index beat, rather than at the index beat-initiated cycle, had the best correlation with the mean (r = 0.88 for septal and 0.97 for lateral wall, both p values = 0.000). (C) 2019 World Federation for Ultrasound in Medicine & Biology. All rights reserved.
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