tourniquet
tour·ni·quet
T0291000 (to͝or′nĭ-kĭt, tûr′-)tourniquet
(ˈtʊənɪˌkeɪ; ˈtɔː-)tour•ni•quet
(ˈtɜr nɪ kɪt, ˈtʊər-)n.
| Noun | 1. |  tourniquet - bandage that stops the flow of blood from an artery by applying pressure |
n.
tourniquet
tourniquet
(to͝or`nĭkĕt, –kā, tûr`–), compression device used to cut off the flow of blood to a part of the body, most often an arm or leg. It may be a special surgical instrument, a rubber tube, a strip of cloth, or any flexible material that can be tightened to exert pressure. Compression should not be maintained for more than 20 min at a time because of the danger of congestion and gangrene. In cases of a bleeding emergency, a tourniquet is used to stop the flow of blood if other means, e.g., the application of a pressure bandage to the wound, are not effective. In arterial hemorrhage (bright red blood spurting out in jets) the tourniquet is applied above the wound, i.e., between the wound and the heart. In hemorrhage from a vein (an even flow of dark red blood) the tourniquet is applied below the wound, i.e., away from the heart.Tourniquet
an elastic rubber tube (tape, bandage, cuff, and the like) for temporarily stopping hemorrhage when there is a wound or during an operation.
The various types of tourniquets used are based on constricting the extremities. A properly applied tourniquet must constrict the arterial trunks, otherwise hemorrhage is intensified owing to cessation of outflow of venous blood. A tourniquet is applied either on clothing or on a layer of cloth (a towel). The more elastic the tourniquet, the less it traumatizes the body tissues. A tourniquet is applied for no longer than two hours; during that time it should be loosened two or three times (more often in winter) to restore the circulation. (The artery should be pressed with a finger when the tourniquet is loosened.)
tourniquet
[′tu̇r·nə·kət]tourniquet
tourniquet
tourniquet
[toor´nĭ-ket]For hemorrhage, a tourniquet should be used only as a last resort, when the bleeding is so severe that it is threatening the life of the injured person and cannot be stopped by direct pressure. In the case of snakebite, a moderately tight tourniquet may be applied to impede the spread of venom while not stopping arterial blood flow. For an intravenous injection, a loosely applied tourniquet inhibits blood flow in the superficial veins, making them more prominent so that a vein can be found for the injection. For maintenance of a nearly bloodless field" >operative field, pneumatic tourniquets are often used. The American Association of Operating Room Nurses (AORN) has published guidelines for the use of tourniquets during surgery; see their web site at http://www.aorn.org.
tour·ni·quet
(tūr'ni-ket),tourniquet
(to͝or′nĭ-kĭt, tûr′-)tourniquet
A cord or constrictive band used to ↓ blood flow to 1+ extremity; tourniquets have clinical currency in ↓ the centripetal flow of toxins in snake and scorpion bites, and in ↓ the cardiac load in acute CHF, as may occur in an acute MI, where the tourniquets are rotated, simultaneously with other emergency measures–eg, O2, lasix, nitroprusside, nitroglycerin; when used, a tourniquet should be confined to the proximal part of the extremity. See Rotating tourniquet.tour·ni·quet
(tŭr'ni-kĕt)tourniquet
An encircling band placed around a limb and tightened enough to compress blood vessels and prevent blood flow. Tourniquets are used in surgery or in the emergency control of severe bleeding from an artery or a large vein, but are dangerous if left in place for more than an hour or so. A forgotten tourniquet inevitably causes GANGRENE and loss of the limb beyond the point of application.Tourniquet
tour·ni·quet
(tŭr'ni-kĕt)tourniquet
- noun
Synonyms for tourniquet
noun bandage that stops the flow of blood from an artery by applying pressure
Synonyms
- compression bandage
Related Words
- bandage
- patch
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