Abstract
To use Doppler tissue imaging to evaluate heart function and to predict rehospitalization rate in progressive systemic sclerosis, we studied 40 patients (limited in 24 patients, diffuse in 16 patients) with chest roentgenography, pulmonary function test, routine echocardiography, and myocardial Doppler tissue. Another 45 volunteers without any sign of heart failure served as the control group. Significant difference of echocardiographic parameters was found in peak transmitral early diastolic velocity, right ventricular (RV) ejection fraction (EF) (RVEF), pulmonary artery systolic pressure, and Doppler tissue parameters of the RV and septum (peak transmitral early diastolic velocity, P = .012; RVEF, P < .0001; pulmonary artery systolic pressure, P < .0001). The parameters derived by pulsed wave Doppler tissue decreased in RV, including peak systolic myocardial velocity (Sm), early diastolic velocity, late diastolic velocity, and myocardial performance index. RVEF and left ventricular EF were estimated by Simpson's method. RV-Sm could be used to identify RV failure. Receiver operating characteristic area under the curve for RV-Sm was 0.935. RV-Sm less than 11 cm/s indicted RVEF less than 40% with sensitivity of 87% and specifici...Continue Reading
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