Medical Dictionary Definitions A-Z List
Medical Dictionary Definitions A - Z - «I»:
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 medicine (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...
Internal cardiac defibrillator
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...
Internal carrier: In the drug trade, an individual used to transport internally concealed illicit drugs. Also called a body packer. See: Body packer....
Internal ear: There are three sections of the
ear. They are the external
ear, the middle ear, and the internal ear. The internal ear
is far and away
the most highly complex. The essential component of the
inner ear for
hearing is the membranous labyrinth where the fibers 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....
Internal genitalia, female
Internal genitalia, female: See: Female internal genitalia....
Internal genitalia, male
Internal genitalia, male: See: Male internal genitalia....
Internal jugular vein
Internal jugular vein: The deeper of the two jugular veins in the neck that drain blood from the head, brain, face and neck and convey it toward the heart.
The internal jugular vein collects blood from the brain, the outside of the face and the neck. It runs down the inside of the neck outside the i...
Internal medicine: A medical specialty dedicated to the
diagnosis and medical treatment of adults. A physician who specializes in internal
medicine is referred to as an internist. A minimum of seven years of medical school and
postgraduate training are focused on learning the prevention, diagnosis, ...
Internal pacemaker: A device that uses electrical impulses to regulate the heart rhythm or to reproduce that rhythm. An internal pacemaker is one in which the electrodes into the heart, the electronic circuitry and the power supply are implanted (internally) within the body.
Although there are dif...
Internal radiation therapy
Internal radiation therapy: Radiation therapy in which radioactive material is placed in or near a tumor....
International AIDS Vaccine Initiative
International AIDS Vaccine Initiative: See: IAVI....
International normalized ratio
International normalized ratio: A system, commonly called the INR, established by the World Health Organization (WHO) and the International Committee on Thrombosis and Hemostasis for reporting the results of blood coagulation (clotting) tests. All results are standardized using the international sen...
International unit (IU)
International unit (IU): An international unit (IU) is an internationally accepted amount of a substance. This type of measure is used for the fat-soluble vitamins (such as vitamins A, D and E) and certain hormones, enzymes, and biologicals (such as vaccines).
The definition of an international ...