Hyperaemia

WikiDoc Resources for Hyperaemia
Articles
Most recent articles on Hyperaemia Most cited articles on Hyperaemia Review articles on Hyperaemia Articles on Hyperaemia in N Eng J Med, Lancet, BMJ
Media
Powerpoint slides on Hyperaemia Images of Hyperaemia Photos of Hyperaemia Podcasts & MP3s on Hyperaemia Videos on Hyperaemia
Evidence Based Medicine
Cochrane Collaboration on Hyperaemia Bandolier on Hyperaemia TRIP on Hyperaemia
Clinical Trials
Ongoing Trials on Hyperaemia at Clinical Trials.gov Trial results on Hyperaemia Clinical Trials on Hyperaemia at Google
Guidelines / Policies / Govt
US National Guidelines Clearinghouse on Hyperaemia NICE Guidance on Hyperaemia NHS PRODIGY Guidance FDA on Hyperaemia CDC on Hyperaemia
Books
Books on Hyperaemia
News
Hyperaemia in the news Be alerted to news on Hyperaemia News trends on Hyperaemia
Commentary
Blogs on Hyperaemia
Definitions
Definitions of Hyperaemia
Patient Resources / Community
Patient resources on Hyperaemia Discussion groups on Hyperaemia Patient Handouts on Hyperaemia Directions to Hospitals Treating Hyperaemia Risk calculators and risk factors for Hyperaemia
Healthcare Provider Resources
Symptoms of Hyperaemia Causes & Risk Factors for Hyperaemia Diagnostic studies for Hyperaemia Treatment of Hyperaemia
Continuing Medical Education (CME)
CME Programs on Hyperaemia
International
Hyperaemia en Espanol Hyperaemia en Francais
Business
Hyperaemia in the Marketplace Patents on Hyperaemia
Experimental / Informatics
List of terms related to Hyperaemia

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Please Take Over This Page and Apply to be Editor-In-Chief for this topic: There can be one or more than one Editor-In-Chief. You may also apply to be an Associate Editor-In-Chief of one of the subtopics below. Please mail us [2] to indicate your interest in serving either as an Editor-In-Chief of the entire topic or as an Associate Editor-In-Chief for a subtopic. Please be sure to attach your CV and or biographical sketch.

Overview

Hyperemia describes the increase of blood flow to different tissues in the body. It can have medical implications, but is also a regulatory response, allowing change in blood supply to different tissues through vasodilation.

Hyperemia and the regulation of blood flow

Functional hyperemia is an increase in blood flow to a tissue due to the presence of metabolites and a change in general conditions. When a tissue increases activity there is a well characterized fall in the partial pressure of oxygen and pH, an increase in partial pressure of carbon dioxide, and a rise in temperature and the concentration of potassium ions. The mechanism for vasodilation is unclear, but it may have something to do with the opening of precapillary sphincters.

Active hyperemia is also a term used to describe dilation of arteriolar smooth muscle to increase blood flow in response to an increase in metabolism. Reactive hyperemia is the same but in response to a profound increase in blood flow to an organ after being occluded. There will be a shortage of oxygen and a build-up of metabolic waste. * Blood flow to the heart becomes hyperemic if a balloon is inflated in a coronary artery (reactive hyperemia) and if there is embolism. The hyperemia in the heart is mediated by local adenosine release which can be documented to rise when the coronary sinus is sampled following embolization.

External links

• Active and reactive hyperemia. Richard E. Klabunde, Ph.D. Cardiovascular Physiology Concepts. Accessed on 27 February 2006.

Template:WikiDoc Sources