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 ?
Tissue perfusion parameters were similar with T0 with no significant difference.
I n the NE "Ineffective Peripheral Tissue Perfusion", the defining characteristic: Altered skin characteristics (78.3%) and the related factors: SAH and DM (100.0%) were the most examined in participants.
The brachial plexus block may be a convenient additional therapy to maintain tissue perfusion combined with anticoagulants and vasodilators drugs after the intra-arterial injection.
THE RELATION OF DOSE-DEPENDENT PROGESTERONE-INDUCED GENERALIZED VASODILATATION WITH BETTER TISSUE PERFUSION, TO DECREASED ERYTHROCYTE COUNT BOTH IN NONPREGNANTAND PREGNANT STATE
Lapoint, "Lateral traction during shoulder arthroscopy: its effect on tissue perfusion measured by pulse oximetry," The American Journal of Sports Medicine, vol.
Myocardial Tissue Perfusion. A bolus injection of ICG was associated with a quick appearance of red color, initially in the epicardial coronary arteries and then in myocardial tissue.
Under cardiovascular there were changes as increased pulse rate, increase in mean arterial pressure, decrease in cardiac output and increase in systemic vascular resistance which in turn compromises tissue perfusion.
Synchronized Cardiac Assist overlays or superimposes a physiological pulse wave onto the patient's weakened pulse and is designed to be a less-invasive treatment than the current standard while using a more physiological treatment essential to endothelial function, which ensures adequate tissue perfusion in the organs.
In the initial phase of shock, the compensatory mechanism is vasoconstriction through neurohumoral response; in the late phase, the participation of peripheral circulation supporting tissue perfusion is weak to the point of disappearing.
Vasodilatation, tissue perfusion defects, cardiac arrhythmias, and decreased oxygen deliveries might be the cause of myocardial injury.
Twelve chapters are: intracranial pressure monitoring; transcranial Doppler monitoring; continuous EEG monitoring; cerebral oxygenation; brain tissue perfusion monitoring; cerebral microdialysis; cerebral autoregulation; neuroimaging; evoked potentials in neurocritical care; bioinformatics for multimodal monitoring; nursing: the essential piece to successful neuromonitoring; multimodal monitoring: challenges in implementation and clinical utilization.
For instance, incisions might take longer to close on obese patients, and challenges, such as impaired tissue perfusion and limited blood supply can impact the healing and subsequent cosmetic results.