Intermittent insomnia
See Insomnia, intermittent.
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- Intern
In medicine, a doctor who has completed medical school and is engaged in a year of additional training at a hospital before residency. An intern may, for example, be in pediatrics or internal medicine. The internship year is often quite rigorous.
- Internal bleeding
Bleeding inside the body that is not seen from the outside. Internal bleeding occurs when damage to an artery or vein allows blood to escape the circulatory system and collect inside the body. The internal bleeding may occur within tissues, organs, or in cavities of the body including the head, chest, and abdomen. Examples of […]
- Internal cardiac defibrillator
A device put within the body that is designed to recognize certain types of abnormal heart rhythms (arrhythmias) and correct them. Defibrillators continuously monitor the heart rhythm in order to detect overly rapid arrhythmias such as Ventricular tachycardia (rapid regular beating of the ventricles, the bottom chambers of the heart); and Ventricular fibrillation (rapid irregular […]
- Internal ear
a central cavity (the vestibule), semicircular canals (which open into the vestibule) and the cochlea (a snail-shaped spiral tube). The membranous labyrinth also has a vestibule which consists of two sacs (called the utriculus and sacculus) connected by a narrow tube. The utriculus, the larger of the two sacs, is the principal organ of the […]
- Internal fixation
A surgical procedure that stabilizes and joins the ends of fractured (broken) bones by mechanical devices such as metal plates, pins, rods, wires or screws. Internal fixation is as opposed to external fixation of a fracture by a splint or cast.