Pulsed Tissue Doppler Imaging of Left Ventricular Systolic and Diastolic Wall Motion Velocities to Evaluate Differences Between Long and Short Axes in Healthy Subjects☆,☆☆
Section snippets
Study Population
We enrolled 35 consecutive subjects (23 men, 12 women; mean age 26 ± 10 years; range 16 to 38 years) in normal sinus rhythm (mean heart rate 72 ± 7 bpm, range 67 to 79 bpm). These subjects had presented with various disorders (eg, chest pain, dyspnea, heart murmurs, or arrhythmia) and were evaluated by phonocardiography, routine echocardiography, and cardiac catheterization. None showed evidence of clinically significant cardiovascular disease. Also, no medical history of any underlying
Transmitral Flow Velocity
The peak early diastolic velocity (E: 72 ± 14 cm/s) was greater than the peak atrial systolic velocity (A: 44 ± 8 cm/s). Their ratio was greater than 1 (E/A: 1.7 ± 0.5).
LV Wall and Mitral Annulus Motion Velocities
Systolic motion velocities at the LV posterior wall and mitral annulus consisted of 2 peaks: Sw1 and Sw2 (Figure 2). Diastolic motion velocities at the LV posterior wall and mitral annulus also consisted of 2 peaks: Ew and Aw. During recording of the systolic motion velocity at the LV posterior wall and mitral annulus along the
DISCUSSION
LV systolic function has been investigated widely, both experimentally and clinically. It is known that the LV myocardium generally consists of circumferential fibers in the mid-wall and longitudinal fibers in the subendocardial and subepicardial walls.1, 2 It is also recognized that LV systolic function is the sum of the shortening of these fibers.6 Circumferential fibers are generally larger than longitudinal fibers,1, 4 and LV ejection is essentially the result of the shortening of the
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2020, Diastology: Clinical Approach to Heart Failure with Preserved Ejection FractionHigh-Frame-Rate Deformation Imaging in Two Dimensions Using Continuous Speckle-Feature Tracking
2016, Ultrasound in Medicine and BiologyA novel index combining diastolic and systolic Tissue Doppler parameters for the non-invasive assessment of left ventricular end-diastolic pressure
2009, International Journal of CardiologyCitation Excerpt :The number of patients in this study was relatively small; however, we were able to reach several significant observations. TDI velocities in our patients were lower than values reported by other authors [22,36,37,38]. One possible explanation could be that our study included patients referred for clinically indicated left heart catheterization representing a group with high proportion of severe cardiac diseases.
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Reprint requests: Takashi Oki, MD, Second Department of Internal Medicine, School of Medicine, The University of Tokushima, 2-50 Kuramoto-cho, Tokushima 770-8503, Japan.
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