Changes Of Electro-Mechanical Excitation And Ventricular Function In Patients With Completed Right Bundle Branch Block

Objective To investigate the effects of complete right bundle branch block (CRBBB) on electro-mechanical excitation and ventricular function, regional and integrated cardiac function, in terms of systolic and diastolic velocity and time interval, of 48 CRBBB patients without structural heart diseases, was assessed by measuring by tissue Doppler imaging ( M-TDI or PW-TDI).Methods1. Subjects with isolated CRBBB (n=48 ) and controls ( n=42) were enrolled in this study. Diagnostic standard of CRBBB was based on Guo Ji-hong's Electrocardiogram(Book).2. All subjects recieved the test of Electrocardiogram. The time internal of PR,QRS and RR were measured.3. All subjects recieved the test of Two-Dimensional echocardiography and PW-TDI.3.1 LV end-diastolic diameters, RV end-diastolic diameters and inter-ventricular septum and posterior wall thicknesses were measured from the parasternal long-axis projection. LV end-systolic and diastolic volumes,RV end-systolic and diastolic volumes were obtained from the...