In recent years, data have been accumulated on the negative effect of right ventricular (RV) stimulation, leading to left (LV) asynchrony, proarrhythmias and progressive heart failure (HF). On other hand, biventricular pacing has shown affect reduce HF manifestations, improve prognosis in patients with LV dysfunction wide QRS complex. The induced asynchrony from apical is unequivocally associat...

objectives in this study, besides studying the rv function in ssc patients, attempts have been made to find a new possible noninvasive echocardiographic test for early diagnosis of systolic failure as a pah complication. methods 30 patients with at least a 2-year history of diffuse ssc confirmed by an expert rheumatologist were enrolled in this study. all the patients underwent transthoracic ec...