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 ?
Dynamic pulmonary perfusion and flow quantification with MR imaging, 3.0T vs.
The evaluation of patients for deep vein thrombosis and pulmonary perfusion defects in the beginning stages of PH would help clarify whether PE or an in situ thrombotic arteriopathy is the cause of PH in SCD.
Two patterns of pulmonary perfusion are seen in patients with PPH.
The provision of nuclear medicine services in the region of murcia, for patients of the murcian health service, in a health center that has sufficient facilities and means to perform the following diagnostic tests: - thyroid scan, - bone scintigraphy in 3 phases, - 3-phase gammagraphy with iodine or gallium, - pulmonary scintigraphy ventilation, - pulmonary perfusion scintigraphy, - total body bone scan, - renogram with captopril or furosemide, - lymphoscintigraphy, - sentinel node detection in the operating room.
Nevertheless, the morphologic information regarding the presence of PTE and functional information of lung perfusion impairment can be obtained in one examination using a dual-energy technique (9), and quantitative evaluations of PTE using LPBV indicate the degree of pulmonary perfusion when determined using a workstation (14).
A retrospective case control study conducted at Miami in 2009-2013 on 274 patients concluded that continued ventilation and pulmonary perfusion during CPB is not associated with improved postoperative outcomes19.
Dail, "Tumor microembolism: pulmonary perfusion pattern," Journal of Nuclear Medicine, vol.
Pulmonary perfusion is more uniform in the prone than in the supine position: scintigraphy in healthy humans.
To test this, MRI-based measures of regional lung density, MRI arterial spin labeling quantification of pulmonary perfusion, and density-normalized perfusion were made in six healthy subjects.