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Category: First Responder

  • xiphoid

    The small, cartilaginous, and bony portion of the sternum attached to the lower end of the body of the sternum.

  • Xylocaine

    A trade name for lidocaine.

  • zygoma

    The cheek bone.

  • white blood cell

    Leukocyte; the cellular element of the blood that produces antibodies and participates in the inflammatory response.

  • willis, circle of

    Arterial loop under brain that is responsible for autoregulation and constant perfusion of cerebral arteries.

  • withdrawal

    Symptoms produced by abstinence from a drug to which one is addicted.

  • volume expander

    An intravenous fluid that stays in the vascular space, usually a colloid or crystalloid.

  • voluntary commitment

    A situation in which a patient signs himself into a psychiatric facility of his own free will.

  • voluntary muscles

    The muscles that function under the conscious control of the brain.

  • vomiting

    A forceful, active expulsion of stomach contents through the mouth (as opposed to regurgitation, which is passive).

  • vomitus

    The matter ejected from the stomach by vomiting.

  • vulnerable period

    An interval during the relative refractory period of the ventricular repolarization, corresponding to the upstroke of the T wave, near its peak, in which an ectopic impulse or an unsynchronized current can produce ventricular tachycardia or fibrillation.