Related Experiment Video
Updated: Jul 20, 2026

Chronic Thromboembolic Pulmonary Hypertension and Assessment of Right Ventricular Function in the Piglet
Published on: November 4, 2015
Right ventricular obstruction by tricuspid pouch in simple ventricular septal defect
1Department of Thoracic and Cardiovascular Surgery, Kanagawa Children's Medical Center, Yokohama, Japan.
Abstract:
Tricuspid pouch sometimes causes subpulmonary obstruction in association with transposition of the great arteries, but rarely does so without transposition. A 5-year-old girl with isolated ventricular septal defect exhibited dynamic right ventricular outflow tract obstruction caused by pouches in the anterior and septal tricuspid leaflets. Echocardiography clearly demonstrated features of the tricuspid pouches. Ventricular septal defect closure resulted in disappearance of the tricuspid pouches and resolution of subpulmonary obstruction.
Related Concept Videos
Chambers of the Heart
Deoxygenated blood from the body is received in the right...
Heart Valves
The AV valves prevent the backflow of blood from the ventricles to the atria during ventricular contraction. These valves function with the assistance of the chordae tendineae and papillary muscles. When the ventricles are relaxed, the chordae tendineae are slack, allowing blood to flow from the atria into the...
Development of the Heart
As the embryo undergoes lateral folding, these paired tubes approach each other, merging into a single primitive heart tube by...
Mitral Valve Prolapse I: Introduction
Mitral Regurgitation I: Introduction
Mitral Stenosis I: Introduction

