Related Experiment Video
Updated: Apr 15, 2026

Induction of Right Ventricular Failure by Pulmonary Artery Constriction and Evaluation of Right Ventricular Function in Mice
Published on: May 13, 2019
[Short-term effects of stimulation in the right ventricular outflow tract]
Introduction:
Stimulation in the right ventricular outflow tract (RVOT) showed better clinical and hemodynamic results at short, medium and long term than apical pacing.
Methods:
We enrolled 30 patients undergoing pacemaker implantation with positioning of electrocatheters in the high or low RVOT. All patients underwent clinical, echocardiographic and electrocardiographic evaluation after implantation and at 6-month follow-up.
Results:
After 6 months of pacing, no significant changes in echocardiographic parameters were observed, whereas differences were found between the duration of spontaneous QRS and the duration of QRS stimulated at the time of implantation. Electrocatheter implantation in the high RVOT showed a particular benefit.
Conclusions:
Chronic stimulation in RVOT, preferably in the high tract, can be considered a viable alternative to apical pacing in patients with likely high rates of stimulation, especially of young age.
More Related Videos
10:39Rat Model of Right-Sided Cardiac Remodeling and Arrhythmia Using Pulmonary Artery Banding
Published on: August 30, 2024
12:45Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing
Published on: December 11, 2017
Related Concept Videos
Mitral Stenosis I: Introduction
Mitral Regurgitation I: Introduction
Heart Failure II: Pathophysiology
Aortic Regurgitation II: Clinical Features and Diagnostic Tests
Regulation of Stroke Volume
Preload refers to the degree of stretch on the heart before it contracts. It's analogous to the stretching of a rubber band; the more it's stretched, the more forcefully it snaps back. This concept is encapsulated in the Frank-Starling law of the...