electrical axis
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e·lec·tri·cal ax·is
the net direction of the electromotive forces developed in the heart during its activation, usually represented in the frontal plane. See: triaxial reference system.
e·lec·tri·cal ax·is
(ĕ-lek'tri-kăl ak'sis)The net direction of the electromotive forces developed in the heart during its activation, usually represented in the frontal plane.
electrical
producing, produced by or powered by electricity.
electrical anesthesia
see electrical immobilization.
electrical analgesia
see electrical immobilization.
electrical axis
in electrocardiographic work is the direction of the electrical forces in the heart at a given moment in the cardiac cycle. See also mean electrical axis.
electrical conductivity
in milk increases with an increase in the severity of inflammation of the mammary tissue. Used as a mastitis detection device.
electrical fences
temporary fences, usually one or two strands of wire, electrified by low voltage batteries, used to confine cattle, pigs or horses to specified sections of a pasture. Similar wires are added to wooden and other fences to prevent animals rubbing against them.
electrical ignition sources
electric power outlets, switches and electrical equipment in the surgery can be the cause of explosion if flammable anesthetic agents or oxygen are being used.
electrical injuries
shock caused by the passage of electric current passing through the body can cause irritation, unconsciousness, burns or immediate death depending on the voltage, the amperage of the current, the efficiency of the patient as an earth contact and the duration of the shock. Signs and the fatal outcome are due to paralysis of medullary centers in the medulla oblongata. Burns when they occur are usually at the points of contact between the animal and the earth. High voltage current will cause sudden death (electrocution). Low voltage house current will knock a cow down and may cause death, trickle current loss will cause cows to bellow and to kick. Lower voltage current still has been associated with a high prevalence rate of mastitis. See also lightning strike.
Household pets, particularly puppies and kittens, most often are injured from chewing on electrical cords. If not electrocuted, they incur burns of the mouth or lips that vary from small, punctate lesions to large areas. These are caused by coagulation and necrosis and do not become apparent until 2 to 3 weeks after the incident, making the diagnosis very difficult. Pulmonary edema is also a major feature of electrical injury in dogs and cats and it can be the cause of death.
electrical point finding
identification of acupuncture points by the use of an electrical point finder; this measures the resistance of the skin to the flow of electricity; it is much lower over acupuncture points.
electrical stimulators
battery-powered instruments which generate a current sufficient to stimulate acupuncture points.
electrical stunning
the passage of a low voltage electrical current through the brain to cause unconsciousness. The current is passed through a pair of tongs clamped to the head like a pair of earphones. Used mostly for pigs and poultry but also for lambs and calves. The tongs should be applied for at least 10 seconds and the amperage not less than 250 milliamps and the voltage not less than 75 volts. See also stunning.