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V

vaporizer

Medical equipment that produces vapor from volatile anaesthetic agents such as ether, chloroform, or halothane. Gases are blown through, over the surface, or over a wick of the volatile liquids to produce vapor. Vaporizers usually fit on the back of the anaesthetic machine so that the gas mixtures from the flowmeters can pass through, collecting the vapor.

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vascular surgery

Concerned with the surgical treatment of disorders of the blood vessels.

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ventilator, respiratory

Medical equipment or a breathing machine for providing assisted or artificial ventilation of the lungs. It can thus mean a resuscitator for emergency use, a body respirator, or lung ventilator. In any form its function is to assist or take over from the spontaneous respiratory effort of the patient. These are used during anaesthesia, in intensive care for life support, and during emergency resuscitation.

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vital signs

Vital signs include resiration (breathing), pulse (heart rate), blood pressure, and body temperature. These measurements indicate the degree of functionality of the body systems which are essential to keep the patient alive.

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volt

A unit of electromotive force in the International System of Units that will produce a current of 1 ampere in a circuit that has resistance of 1 ohm.

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