Anesthesia Terms - A Glossary of Anesthesia Terms and Other Related Medical Terms

Anesthesia Terms Starting With "T"

Therapeutic Index

The ratio of the median lethal dose to the median effective dose. (LD50:ED50) more

Thermistors

Semiconductors whose resistance decreases predictably with warming. more

Thermocouple

A circuit of two dissimilar metals joined so that a potential difference is generated when the metals are at different temperatures. more

Thyroid storm

Also referred to as thyrotoxic crisis, is an acute, life-threatening, hypermetabolic state induced by excessive release of thyroid... more

Train-of-four

Stimulation that denotes four successive twitch stimuli in 2 seconds (2Hz). The twitches in a train-of-four pattern progressively... more

Transcutaneous Electrical Stimulation (TENS)

A Transcutaneous Electrical Nerve Stimulator, more commonly referred to as a TENS unit and pronounced tens, is an electronic device... more

Transesophageal echocardiography

Assesses left ventricular filling (end-diastolic volume and end-systolic volume), ejection fraction, wall motion abnormalities, and... more

Trigeminal Neuralgia (TN)

TN (Trigeminal Neuralgia) is a pain that is described as among the most acute known to mankind. TN produces excruciating, lightning... more

Trigger Points

Trigger points are described as hyperirritable spots in skeletal muscle that are associated with palpable nodules in taut bands of... more

Tuohy Needle

The most common version of the standard epidural needle. Typically 16-18 gauge, 3 inches long, and has a blunt bevel with a gentle... more

Twitch

A single pulse that is delivered from every second to every ten seconds (1-0.1 Hz). more