Related Experiment Video
Updated: Aug 18, 2026

Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing
Published on: December 11, 2017
Congestive heart failure treated by the upgrade from VVI to DDD pacing
S A Kontoyannis1, J N Nanas, S F Stamatelopoulos
1University of Athens School of Medicine, Department of Clinical Therapeutics, Alexandra Hospital, Greece.
Abstract:
The case is presented of an elderly woman with normal left ventricular (LV) systolic function and VVI pacing complicated by severe congestive heart failure. The symptoms and findings of congestive heart failure became refractory to medical treatment and resolved with the upgrade of the VVI to a DDD system. Right heart catheterization during VVI pacing showed increased mean pulmonary capillary wedge and right atrial pressures both being normalized under DDD pacing. This case report illustrates the need to consider permanent physiological pacing in elderly patients, even in presence of normal LV systolic function, to ensure AV synchrony when the atrium can be paced, since diastolic LV dysfunction is quite common in these subjects.
More Related Videos
06:10Utilizing Percutaneous Ventricular Assist Devices in Acute Myocardial Infarction Complicated by Cardiogenic Shock
Published on: June 12, 2021
07:49A Pacing-Controlled Procedure for the Assessment of Heart Rate-Dependent Diastolic Functions in Murine Heart Failure Models
Published on: July 21, 2023
Related Concept Videos
Heart Failure II: Pathophysiology
Heart Failure IV: Classification and Diagnostic Evaluation
Heart Failure V: Medical Management
Heart Failure VI: Adjunct Therapies
Cardiomyopathy II: Dilated Cardiomyopathy
Cardiomyopathy V: Interprofessional Care