Journal of the American Society of Echocardiography
Original articleDoppler Tissue Evaluation of Intra-atrial and Interatrial Electromechanical Delay and Comparison with P-wave Dispersion in Patients with Mitral Stenosis
Section snippets
Methods
For this study, 25 patients with pure MS (age 43 ± 10 years; 18 women, 7 men) and 16 control subjects (age 41 ± 8 years; 9 women, 7 men) were studied. All patients were in sinus rhythm, in New York Heart Association class I or II, and not using β-blockers or digitalis derivatives. None of the patients had pacemakers. A complete transthoracic echocardiographic evaluation was performed using commercially available ultrasonographic equipment (System Five, GE Vingmed Ultrasound, Horten, Norway). A
Results
Baseline characteristics were shown in Table 1. There were no significant differences with respect to age, heart rate, blood pressure, LV end-diastolic and end-systolic diameter, and LV ejection fraction.
Echocardiographic parameters of the LA are summarized in Table 2. LA maximum and minimum diameter, and maximum and minimum area, were significantly higher in patients with MS compared with control subjects (Table 2).
Table 3 displays the left and right electromechanical intervals for the control
Discussion
Atrial conduction disorders are frequent for patients with mitral valve disease. The resultant electrophysiologic and electromechanical abnormalities caused by atrial conduction abnormalities are associated with a higher risk of atrial fibrillation.1 This study has demonstrated for the first time that atrial electromechanical delay measured with Doppler tissue gets longer in MS.
Atrial electromechanical delay can be evaluated with invasive and noninvasive methods. Wang et al5 were the first to
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