perfusion (redirected from perfusion:ventilation ratio)

perfusion /per·fu·sion/ (-zhun)

1. the act of pouring over or through, especially the passage of a fluid through the vessels of a specific organ.

2. a liquid poured over or through an organ or tissue.

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luxury perfusion  abnormally increased flow of blood to an area of the brain, leading to swelling.

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per·fu·sion (pr-fyzhn)

n.

1. The act of perfusing.

2. The injection of fluid into a blood vessel in order to reach an organ or tissues, usually to supply nutrients and oxygen.

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Perfusion

The passage of fluid (such as blood) through a specific organ or area of the body (such as the heart).

Mentioned in: Shock, Thallium Heart Scan

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perfusion

[pərfyo̅o̅′zhən]

Etymology: L, perfundere, to pour over

1 the passage of a fluid through a specific organ or an area of the body.

2 a therapeutic measure whereby a drug intended for an isolated part of the body is introduced via the bloodstream.

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perfusion (prfūzhn),

n a therapeutic measure whereby a drug intended for an isolated part of the body is introduced via the bloodstream.

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perfusion

1. the act of pouring through or over; especially the passage of a fluid through the vessels of a specific organ.

2. a liquid poured through or over an organ or tissue.

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perfusion pressure

the gradient between arterial blood pressure and venous pressure in a comparable location in the vascular tree.

pulmonary perfusion

blood flow through the pulmonary capillaries.

renal perfusion

the rate of perfusion in the kidney is much higher than in any other organ. The rate of formation of urine depends to a large extent on the perfusion rate.

perfusion scan

using pulmonary scintigraphy, radionucleotide agents injected into a peripheral vein can be detected where it is trapped in the pulmonary capillary bed. Used to assess pulmonary blood flow.

perfusion technique

maintenance of blood circulation to tissues during cardiopulmonary bypass.

perfusion:ventilation ratio

see ventilation: perfusion ratio.

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perfusion

Bathing an organ or tissue with a fluid. See Arterial perfusion, Hyperthermic perfusion, Isolated hepatic perfusion, Limb perfusion, Myocardial perfusion Oncology A technique used for a melanoma of an arm or leg; circulation to and from the limb is stopped with a tourniquet; chemotherapy is put directly into the circulation to ↑ regional drug dose Transplantation The intravascular irrigation of an isolated organ with blood, plasma or physiologic substance, to either studying its metabolism or physiology under 'normal' conditions or for maintaining the organ as 'fresh' as possible, while transporting donated organs to recipients. See Slush preparation.