Pathologic Function
pulmonary valve insufficiency
pul·mo·nar·y valve in·suf·fi·cien·cy
Subclass of:
Heart valve disease
Definitions related to pulmonary valve insufficiency:
  • (pulmonary insufficiency) The retrograde (backwards) flow of blood through the pulmonary valve into the right ventricle during diastole.
    Human Phenotype Ontology (HPO)
    The Human Phenotype Ontology Project, 2025
  • Backflow of blood from the PULMONARY ARTERY into the RIGHT VENTRICLE due to imperfect closure of the PULMONARY VALVE.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2025
  • (pulmonary valvular insufficiency) Dysfunction of the pulmonary valve characterized by incomplete valve closure.
    NCI
    U.S. National Cancer Institute, 2021
  • (pulmonary valvular regurgitation) The backflow of blood from the pulmonary artery into the right ventricle, owing to insufficiency of the pulmonic semilunar valve.
    NCI
    U.S. National Cancer Institute, 2021
  • (pulmonary valve insufficiency/ regurgitation) Incomplete closure or damage to a valve leaflet of the pulmonary valve, resulting in pulmonary valve backflow.
    U.S. FDA Glossary
    U.S. Food & Drug Administration, 2021
  • Pulmonic (pulmonary) regurgitation (PR) is incompetency of the pulmonic valve causing blood flow from the pulmonary artery into the right ventricle during diastole. The most common cause is pulmonary hypertension. PR is usually asymptomatic. Signs include a decrescendo diastolic murmur. Diagnosis is by echocardiography. Usually, no...
    Merck Manuals
    Merck & Co., Inc., 2025
  • The pulmonic valve is normally a thin tricuspid structure that prevents blood from regurgitating into the right ventricle once ejected into the low-pressure pulmonary circulation. Pulmonic regurgitation refers to retrograde flow from the pulmonary artery into the right ventricle during diastole.
    Medscape
    WebMD, 2025
  • Pulmonary regurgitation is rare and is infrequently symptomatic. It gradually develops over many years and results in volume overload and right ventricular (RV) dysfunction. It can be congenital or acquired, caused by conditions that increase pulmonary artery pressure, such as left ventricular (LV) dysfunction or severe lung disease. The...
    Epocrates
    Athenahealth, Inc., 2019
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