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T

T-piece circuit

A breathing circuit used in anesthesia, which is shaped like the letter "T". The exhaled gases are passed into a reservoir tube from which they are pushed by fresh gas from the anesthetic machine as it passes from the stem to the other arm of the T during expiration. There are no valves.

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telemetry

Medical equipment which monitors the remote measurement and transmission of patient data via a telecommunications system to a provider's site for analysis and decision making.

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teleradiology

The electronic transmission of radiological images from one location to another for the purposes of interpretation and/or consultation.

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thermometer

A device that measures temperature or using a variety of different principles. A thermometer has two important elements: the temperature sensor in which some physical change occurs with temperature, plus a means of converting this physical change to a measurable value. Thermometers increasingly use electronic means to provide a digital display or input to a computer.

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thoracic surgery

Operative care of patients with conditions within the chest, including coronary artery disease, lung cancer, esophageal cancer, heart valve and major vessel abnormalities.

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tissue dissection

Tissue dissection is a general medical term for the process of cutting apart or separating tissue in a surgical procedure. The process includes a careful operation which removes some structures but preserves others. For example, the removal of cancerous tissue, as in the separation of tissue during a breast biopsy or mastectomy, is a type of tissue dissection. See also: dissection

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tissue forceps

A category of forceps used for handling tissue without doing damage during surgery.

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tracheotomy

Also referred to as a tracheostomy, this term refers to an incision made through through the neck into the windpipe to create a temporary outside opening in order to bypass the mouth and throat which is made when the upper airway is blocked.

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tranquilizer

A drug that depresses the central nervous system causing relaxation, reduction of anxiety, drowsiness and slowed breathing.

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transducers

Any device or element which converts an input signal into an output signal of a different form. Examples include the microphone, phonographic pickup, loudspeaker, barometer, photelectric cell, automobile horn, doorbell, and underwater soundtransducer.

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trauma surgery

Concerned with the treatment of wounds and injuries through surgical methods.

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treadmill test

Also known as an "exercise stress test," this term refers to a test which is performed to determine irregular heart rhythms which may occur during exercise.

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trendelenburg

A position in which the patient is on his back with the head and chest lowered and the legs elevated.

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