Estimation of Heart Valves Velocity Value in Healthy Males by Using Doppler Echocardiography
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Objectives: To determine the velocity of heart valves’ flow in fit Sudanese males. Materials and Methods: The study was conducted on 160 men and the mean age was 44.2 years (mean age 44.2 ±9.7 years). Free from any heart problems. Different ultrasound modes were used in this survey. Results: The healthy participant males, show standard normal limits of heart valves’ mean velocity. In comparison to previous studies, there was no difference in the detected values. onclusion: The outcomes of the current survey indicate that the velocities of cardiac valves in Sudanese population correspond to those reported values in Western literature. So normal values of these Doppler parameters should be borne in mind for non-invasive cardiovascular function assessment. Keywords: Echocardiography; Velocity values; Valves; Healthy Males; Heart.Keywords:
Doppler ultrasound
Cardiac Ultrasound
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Objectives: To determine the velocity of heart valves’ flow in fit Sudanese males. Materials and Methods: The study was conducted on 160 men and the mean age was 44.2 years (mean age 44.2 ±9.7 years). Free from any heart problems. Different ultrasound modes were used in this survey. Results: The healthy participant males, show standard normal limits of heart valves’ mean velocity. In comparison to previous studies, there was no difference in the detected values. onclusion: The outcomes of the current survey indicate that the velocities of cardiac valves in Sudanese population correspond to those reported values in Western literature. So normal values of these Doppler parameters should be borne in mind for non-invasive cardiovascular function assessment. Keywords: Echocardiography; Velocity values; Valves; Healthy Males; Heart.
Doppler ultrasound
Cardiac Ultrasound
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Fifty-five consecutive adult patients with mitral stenosis (MS) were in vestigatedby Doppler echocardiography, to assess the severity of MS. The measurement of mitral valve area (MVA) by cross-sectional echocardiography (CSE) was considered as the reference method, because catheterization data are often inadequate when combined lesions are present. Doppler MVA was calculated from apical mitral flow using the pressure half-time method. Adequate Doppler recordings (52 on 55) were easier to obtain than adequate CSE images[47]. The correlation between both methods was excellent (r = 0.90, SEE: 0.42 cm2) despite systematic underestimation of MVA by Doppler versus CSE. From our data, the following regression equation could be drawn, providing MVA from Doppler measurements: MVA = 250 (pressure half-time)−1 +0.15, where the area is in cm1 and half-time in ms. Both severe and mild MS were identified by Doppler with enough accuracy for clinical use. Reproducibility, inter and intraobserver variability were better for Doppler than for CSE. We conclude that Doppler seems particularly suitable for noninvasive quantification of MS and for patient follow-up.
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Abstract During the past decade Doppler echocardiography has evolved to an extent that it has become a major noninvasive tool for cardiac evaluation in both acquired and congenital heart disease. This article describes current applications of Doppler techniques in the evaluation of cardiac anatomy and hemodynamics. The principles and methods employed in the use of Doppler echocardiography are described and illustrated for assessment and quantitation of flow velocities, pressure gradients, valve areas, valve regurgitation, stroke volume, cardiac output, cardiac shunts, and diastolic filling indices. The increasing accuracy of these applications has led to a substantial reduction in the need for invasive diagnostic methods, such as cardiac catheterization, especially in patients where frequent follow‐up evaluations are indicated.
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