NCT01966016

Efficacy and Safety of Multisite Cardiac Resynchronization Therapy

Efficacy and Safety of Multisite Cardiac Resynchronization Therapy - a Prospective Single Center Study in Selected Patient Population

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 11 (actual)
• Sponsor: Barzilai Medical Center · Academic / Other
• Sex: All
• Age: 40 Years – 90 Years
• Healthy volunteers: Not accepted

Summary

Cardiac resynchronization therapy (CRT) is a proven therapy in patients with severe left ventricular (LV) dysfunction with ejection fraction (EF)\<35%., moderate to severe congestive heart failure and wide QRS in ECG. Positive response presents as improvement in quality of life, decrease in congestive hrat failure symptoms and signs, improvements in echocardiographic measurements and longer survival. About 30% of the patients do not respond to this treatment. A decrease in clinical response to CRT is expected in patients with those predictors: advanced age, male, ischemic etiology of cardiomyopathy, Non-LBBB pattern in ECG, lack of mechanical dyssynchrony, large scar in LV, congestive heart failure stage IV, and non-cardiac co-morbidities (lung disease, pulmonary hypertension, renal failure and diabetes). There are few solutions to increase the rate of clinical response to CRT, for example: endocardial pacing of LV or pacing a few simultaneous sites on LV. A study that investigated a method of simultaneous pacing on LV of patients with congestive heart failure and LBBB with QRS\>150ms has shown major improvement of cardiac contraction (increased dP/dtmax) compared to a single pacing site over a postero-basal or lateral wall site). Implantation of pacemaker leads- one in right ventricle (RV) and two over LV, i.e. multisite cardiac resynchronization therapy (MSCRT), has a few potential advantages, compared to conventional CRT.

Conditions

• Ventricular Tachycardia

Interventions

Type	Name	Description
PROCEDURE	Pacing	In this study we intend to include patients that have indication to and are intended to undergo CRT implantation with an additional electrode on LV, that have inclusion criteria and have signed an informed consent. In this study we will include 20 patients for each study arm (overall 100)- each patient will have both treatment configurations and these two will be compared

Timeline

• Start date: 2012-11-20
• Primary completion: 2015-11-17
• Completion: 2015-11-17
• First posted: 2013-10-21
• Last updated: 2019-01-23

Locations

1 site across 1 country: Israel