Eisenmenger's Complex A congenital heart defect that leads to an increase in blood flow to the lungs and to irreversible high blood pressure in the lungs. Used to measure electrical impulses. A graphic record made by an instrument that measures the electrical activity of the brain and records it as patterns of fluctuating waves. Chemical substance with an available electron in its atomic structure that can transmit electrical impulses when dissolved in fluids. Includes sodium, potassium, magnesium, or chloride, all of which can conduct electrical impulses.
Electrolytes also play an essential role in controlling the pH balance of body fluids.
A graphic record of electrical activity associated with muscle function. A stream of particles that produces high-energy radiation to treat cancer. A machine that continuously records fetal heartbeat or maternal uterine contractions. It may be attached externally to a woman's abdomen by two belts or through the vagina with an electrode on the baby's scalp. A type of cardiac catheterization in which electrodes are inserted through blood vessels into the heart to sense electrical impulses and also to pace the heart.