What Is the Pulmonary Valve?

Located between the right ventricle and the pulmonary artery, it inhibits the flow of blood back into the right ventricle.

Pulmonary valve

Located between the right ventricle and the pulmonary artery, it inhibits the flow of blood back into the right ventricle.

Chinese name

Pulmonary valve

Location

Between right ventricle and pulmonary artery

Features

Suppresses blood flow back into the right ventricle into the pulmonary artery

Precautions

Aortic valve injury should be prevented during surgery

The heart has two atrioventricular valves and two aortic valves, the tricuspid valve between the right atrium and the right ventricle, the pulmonary valve between the right ventricle and the pulmonary artery, and the mitral valve between the left atrium and the left ventricle And the aortic valve located between the left ventricle and the aorta. Familiar with the anatomical characteristics and adjacent structures of the heart valve, and help to correctly treat heart valve lesions during valve surgery and avoid damage to adjacent tissues.

The pulmonary valve is a 3 and a half meniscus valve, and the leaflets and annulus are relatively weak. The annulus is connected to the funnel of the right ventricle, and there is no direct fibrous continuity with the tricuspid valve. The three leaflets can be divided into left, right and anterior. The septum of the left lobe and the funnel continued, and the right lobe continued the wall of the funnel. The inner 1/2 of the left and right valves are attached to the aortic wall, and the junction between the left and right pulmonary valves corresponds to the junction of the left and right valves of the aorta, but these two junctions are not completely connected at the same point The interface of the pulmonary valve is slightly higher. The anterior pulmonary valve is connected to the free wall of the right ventricle.

When performing open-sight incision for pulmonary stenosis, care should be taken in cutting the junction of the left and right valves. If the pulmonary artery wall is cut through, the aorta may be injured, and the location is deep enough to stop bleeding.

When the congenital pulmonary valve annulus and right ventricular outflow tract are narrow, the pulmonary valve annulus can be cut along the longitudinal axis of the outflow tract, and then the patch is widened. If it can be cut along the right pulmonary valve anterior valve interface, it may reduce the degree of pulmonary valve insufficiency after operation.

Clinically, the same or autologous pulmonary valve can be used as a substitute for valve transplantation. Because the pulmonary artery is under the muscle, it is difficult to exfoliate it. The left main coronary artery runs behind the pulmonary artery, and the anterior descending branch and the first interval branch run below the main pulmonary artery. Damage to the coronary artery should be prevented when performing autologous pulmonary artery transplantation.

The upper edge of the subvalvular ventricular septal defect is closely related to the 4 semilunar valves (the left and right aortic valves and the left and right pulmonary valves). In particular, the aortic valve should not be injured during surgery.