Perfusion


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perfusion

[pər′fyü·zhən]
(physiology)
The pumping of a fluid through a tissue or organ by way of an artery.

Perfusion

 

a method of passing physiological solutions, blood, blood substitutes, or other fluids through the blood vessels of an organ, a part of the body, or the entire body. Perfusion may be performed on organs completely removed from the body or on organs within the body but isolated from the general vascular system. Widely used in experimental physiology, it permits preservation of the vital activities of organs for a certain period, enabling the study of organ functions and of the effect of hormones, mediators, enzymes, and medicinal substances on physiological systems and the entire body. The method is used in various branches of surgery, including transplantation of organs and tissues. Perfusion of the entire body is used, for example, during heart surgery.

The term “perfusion” also designates the supplying of blood to organs of the body under natural conditions (for example, perfusion of the kidneys, brain, or other organs), which is determined by the state of cardiac activity and local vascular tonus.

References in periodicals archive ?
By far the most benefits and greatest savings with continuous operation and perfusion are experienced with commercial manufacturing.
At the end of the four-hour procedure, the propofol and remifentanil were ceased (Figure 1c, arrow), and over five minutes the Bispectral Index rose from 45 to 68, the perfusion index dropped from six to one and the patient emerged from anaesthesia three minutes after reaching a Bispectral Index of 68.
We describe a sixty-year old patient with effort chest pain and reverse perfusion pattern at tetrofosmin Tc-99m SPECT who evidenced a significant stenosis on the proximal portion of the left anterior descendent coronary artery.
With expertise and reach in the perfusion, diagnostic and therapeutic markets, Applied Medical Products not only provides our company with immediate access to the medical community in the greater New England area, but it has a deep understanding of the emerging opportunities in the broader market with respect to critical perfusion services and applications," said Raymond F.
One hour later, the tail veins of the anaesthetized rats were cannulated by 24 gauge branule, and perfusion CT was performed with an automatic injector for both testes.
With abstinence from alcohol, brain perfusion abnormalities may recover, but there are several factors that may influence recovery, such as age, diet, exercise, genetic predispositions and - the topic of our research -other substances such as tobacco products.
These results are consistent with the INSPIRE study and the COURAGE trial, which found that aggressive and optimal treatment can reverse myocardial perfusion abnormalities.
Reduced uterine perfusion pressure (RUPP) was surgically induced in female rats from the experimental group (n=18) on gestational day 14.
Effect of perilymphatic air perfusion on cochlear potentials.
Belzer's solution was originally developed for continuous hypothermic perfusion, but Southard's group is the first to demonstrate that their perfusion fluid works as well in simplecold storage.
announces new functional-based clinical applications - Dual Energy and Myocardial Perfusion (both works-in-progress), as well as Body Perfusion - for its Aquilion(TM) CT systems.
Scope - Market size for Cardiovascular Surgery Devices categories - Beating Heart Surgery Systems, Cardiac Ablation Devices, Cardiopulmonary Bypass Equipment and Perfusion Disposables - Annualized market revenue (USD million), volume (units) and average selling price ($) data for the market categories.