Tabriz University of Medical Sciences Medical Journal of Tabriz University of Medical Sciences 2783-2031 35 4 2013 10 06 Comparing the Triple-Chamber Pacemakers Programming with Echocardiographic Index and Manufacturers Recommended Settings 18 25 EN Fariborz Akbarzadeh Mehrnoosh Tofan Tabrizi Babak Kazemi Arbat Ali Abasnejad Journal Article 2012 10 13 2012 10 29 Background and Objectives: Cardiac Resynchronization Therapy (CRT) is a therapeutic modality in patients who suffering severe heart failure and Left Bundle Branch Block (LBBB). One of CRT adjustment methods is to convey the manufacturers designed program. There are also Doppler echocardiography’s methods for determining atrioventricular (AVD) and inter ventricular delay times (VV delay). This study has designed to compare CRT adjusting based on these two methods. Material and Methods: In a prospective study, CRT candidates referring to Shahid Madani Educational-Therapy and Research center of Tabriz Medical Sciences University were studied in two groups. In first group systolic and diastolic parameters were measured randomly by echocardiography and CRT programmed based on that findings. In the second group implementation only performed by manufacturer’s guide. Results: There was not any significant difference between these two groups in terms of background disease, and heart block, There wasn’t any significant differences between these two modality in term of clinical results pre-study function class, post-study function class, AVD and VVD. Conclusion: There is no additional advantage in choosing any of CRT adjustment methods based on echocardiography suggestion or based on manufacturer suggestion, comparing to each other from clinical point of view.