electro-, electr-, electri-

The graphic process by which an electrobasograph is made; used for gait or walking analysis.

The liquid used in electroplating, in which the metal to be deposited is held in a solution.

1. The study of electrical activity in organisms (plants and animals) and of the effect of electricity on them.
2. The scientific study of electric phenomena present in the living body and in other organisms; either those produced by the organism itself or by outside sources.

1. A method of determining the presence, or absence, of life in an animal organism by using a current of electricity.
2. The use of a galvanic current to determine whether a tissue is living by recording of electrical activity in a bodily tissue or organism.
3. The examination of a body by means of an electric current, to discover muscular contractions as evidence of life.

The change in position of the interface between two liquids in a capillary tube (a tube with a very small internal diameter) when a voltage is applied across them.

1. The graphic recording of the potentials of the heart detected on the surface of the body by electrocardiography.
2. A record of the electric currents produced in the body by the heart-beats of a patient. The electrocardiogram gives important information concerning the spread of excitation to the different parts of the heart, and is of value in diagnosing cases of abnormal cardiac rhythm and myocardial damage which refers to the muscular tissue of the heart.

1. An instrument for recording the potential of the electrical currents that traverse the heart and initiate its contraction.
2. A device used for recording the electrical activity of the myocardium (heart muscle) to detect transmissions of the cardiac impulses through the conductive tissues of the muscle.

Electrocardiography allows for the diagnosis of specific cardiac abnormalities.

3. An instrument for recording the waveforms of voltages developed in the chest and lower parts of the human body in synchronism with the action of the heart.
4. An instrument used for making electrocardiograms.

I contains a lead-switching network, a differential amplifier, and a strip-chart recorder to trace the electrocardiogram on paper output.

A reference to the science or technique of using an electrocadiograph or the instrument that detects and records the electrical impulses produced by the action of the heart with each beat and which is used to diagnose diseases of the heart.

1. An electrode placed o a part of the body and connected to an electrocardiograph.
2. A record, made by the electrocardiograph, which varies with the site of the electrode.

A health worker with special training and experience in operating and maintaining electrocardioraphic equipment and providing recorded data for diagnositic reviews by a physician.

1. A painless procedure in which the heart's electrical impulses are amplified for making a graphic recording (electrocardiogram) of the electrical impulses which pass through the heart to initiate and to control its activity: Electrocardiography is accomplished by placing metal plates called electrodes on body surfaces and they cause no discomforts.

These plates are attached to a recording instrument, and they pick up the electrical impulses of the heart during which small changes occur as the heart beats. The normal form of these beats is altered by heart disease.

2. The creation and study of graphic records produced by electric currents originating in the heart and the interpretation of electrocardiograms: Electrodes connected to a recording machine are applied to the chest, wrists, and ankles. 3. The specialty or science of recording and interpreting the electrical activity of the heart: An ECG, or EKG, can be taken at home, in the physician's office, or in the hospital where a 24-hour record can be obtained from a tape recorder worn by the patient.

The record obtained by electrocardiophonography (a method of electrically recording the heart sounds).

This record provides information about the part of the heart that triggers each heartbeat (the pacemaker), the nerve conduction pathways of the heart, and the rate and rhythm of the heart.

A device for recording heart sounds.

A reference to a method of electrically recording the sounds of the heart.

Phonocardiography (diagnostic method of graphic registration of heart sounds and murmurs) and electrocardiography (science of recording and interpreting the electrical activity that precedes and is a measure of the action of heart muscles) performed simultaneously.