World Library  
Flag as Inappropriate
Email this Article

Pulmonary artery pressure

Article Id: WHEBN0021755845
Reproduction Date:

Title: Pulmonary artery pressure  
Author: World Heritage Encyclopedia
Language: English
Subject: Hereditary hemorrhagic telangiectasia
Publisher: World Heritage Encyclopedia

Pulmonary artery pressure

Artery: Pulmonary artery
Anterior (frontal) view of the opened heart. White arrows indicate normal blood flow. (Pulmonary artery labeled at upper right.)
Diagram of the alveoli with both cross-section and external view
Latin truncus pulmonalis, arteria pulmonalis
Gray's subject #141 543
Source right ventricle   
Vein pulmonary veins
Precursor truncus arteriosus
MeSH Pulmonary+Artery

The pulmonary artery carries deoxygenated blood from the heart to the lungs. It is one of the only arteries (other than the umbilical arteries in the fetus) that carry deoxygenated blood.

In the human heart, the pulmonary trunk (pulmonary artery or main pulmonary artery) begins at the base of the right ventricle. It is short and wide—approximately 5 centimetres (2.0 in) in length and 3 centimetres (1.2 in) in diameter. It then branches into two pulmonary arteries (left and right), which deliver de-oxygenated blood to the corresponding lung.

In contrast to the pulmonary arteries, the bronchial arteries supply nutrition to the lungs themselves.

Role in disease

Pulmonary hypertension occurs alone and as a consequence of a number of lung diseases. It can also be a consequence of heart disease (Eisenmenger's syndrome) but equally a cause (right-ventricular heart failure); it also occurs as a consequence of pulmonary embolism and scleroderma. It is characterised by reduced exercise tolerance. Severe forms, generally, have a dismal prognosis.

Pulmonary artery pressure

The pulmonary artery pressure is a measure of the blood pressure found in the pulmonary artery. Mean pulmonary arterial pressure is normally 9 - 18 mmHg.[1]

It is usually higher than the pulmonary wedge pressure.

It can be elevated in sickle cell disease.[2]

It can be used to measure pulmonary artery hypertension.[3]

Additional images

See also

External links

  • GPnotebook
  • eMedicine Dictionary
  • Great vessels"
  • 20:07-0105 - "Heart: Openings of Great Vessels into the Pericardial Sac"
  • Mediastinal surface of the right lung."
  • 19:06-02 - "Mediastinal surface of the left lung."
  • 13802loa


This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.

Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.