Related Experiment Video
Updated: Feb 8, 2026

Transcatheter Pulmonary Valve Replacement from Autologous Pericardium with a Self-Expandable Nitinol Stent in an Adult Sheep Model
Published on: June 8, 2022
Trileaflet pulmonary valve reconstruction for pulmonary regurgitation in childhood
Kazuhiko Ishimaru1, Tomomitsu Kanaya1, Shigeru Sakamoto1
1Department of Cardiovascular Surgery, Kanazawa Medical University, Ishikawa, Japan.
Abstract:
A 6-year-old boy with pulmonary regurgitation after complete repair of congenital heart disease underwent an alternative surgical repair for pulmonary valve replacement. Trileaflet pulmonary valve reconstruction using expanded polytetrafluoroethylene membrane is a clinically feasible technique for pulmonary regurgitation in such a young child in whom large-sized bioprosthetic valves cannot be implanted.
Related Concept Videos
Pulmonary Tuberculosis I
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
Pulmonary Tuberculosis II
Here is a detailed explanation of its pathophysiology:
Transmission: The process begins when a person inhales droplet nuclei containing M. tuberculosis. These are typically released into the air when an individual with pulmonary or...
Pulmonary Tuberculosis V
Latent tuberculosis infection occurs when TB bacteria are present in a person's body, but are not causing illness or symptoms. It is not contagious, and preventive treatment is crucial to avoid the...
Other Pulmonary Disorders
Overview of Pulmonary Circulation
The process begins with the right ventricle of the heart pumping deoxygenated blood into the pulmonary trunk. This large vessel extends about 5 centimeters before splitting into the left and right pulmonary arteries. These arteries...
Factors Affecting Pulmonary Ventilation
Alveolar Surface Tension
The alveolar fluid lines the luminal surface of the alveoli and exerts a force called surface tension. This force is caused by the polar water molecules in the liquid being more strongly attracted to each...

