| therapeutic index | The ratio of LD50 to ED50, used in quantitative comparison of drugs. (05 Mar 2000) |
|---|---|
| therapeutic iridectomy | An iridectomy performed for the prevention or cure of disease, e.g., angle-closure glaucoma. (05 Mar 2000) |
| therapeutic malaria | Intentionally induced malaria, formerly used against neurosyphilis and certain other paralytic diseases; the mechanism is thought to be immunological, with Plasmodium antibodies cross-reacting against the spirochetes or other agents. (05 Mar 2000) |
| therapeutic pessimism | A disbelief in the curative virtues of remedies in general and especially of drugs. (05 Mar 2000) |
| therapeutic pneumothorax | Pneumothorax designed to create some pulmonary parenchymal collapse, diaphragmatic immobilization, or both. (05 Mar 2000) |
| therapeutic ratio | The ratio of the maximally tolerated dose of a drug to the minimal curative or effective dose; LD50 divided by ED50. (05 Mar 2000) |
| therapeutic touch | The placing of the hands of the healer upon the person to be cured. (12 Dec 1998) |
| therapeutic vaccine | An injected therapy consisting of synthetic HIV antigen (for example, gp160) that is administered to people who already have HIV It is supposed to heighten and broaden the immune response to HIV, helping to halt disease progression. (09 Oct 1997) |
| embolization, therapeutic | A method of haemostasis utilizing various agents such as gelfoam, silastic, metal, glass, or plastic pellets, autologous clot, fat, and muscle as emboli. It has been used in the treatment of spinal cord and cerebral arteriovenous malformations, renal arteriovenous fistulas, gastrointestinal bleeding, epistaxis, hypersplenism, certain highly vascular tumours, traumatic rupture of blood vessels, and control of operative haemorrhage. (12 Dec 1998) |
| absolute system of units | A system based on absolute units accepted as being fundamental (length, mass, time) and from which other units (force, energy or work, power) are derived; such system's in common use are the foot-pound-second, centimeter-gram-second, and meter-kilogram-second system's. (05 Mar 2000) |
| absorbent system | <anatomy> The tissues and organs (including the bone marrow, spleen, thymus and lymph nodes) that produce and store cells that fight infection and the network of vessels that carry lymph. (12 May 1997) |
| alimentary system | The organs that are responsible for getting food into and out of the body and for making use of food to keep the body healthy. These include the mouth, oesophagus, stomach, liver, gallbladder, pancreas, small intestine, colon, and rectum. (12 Dec 1998) |
| anterolateral system | A composite bundle of fibres, located in the ventrolateral part of the lateral funiculus, containing spinothalamic, spinohypothalamic, spinoreticular, and spinomesencephalic (spinotectal, spinal to periaqueductal grey, etc.) fibres; occupies the combined areas of the spinal white matter historically divided into anterior and lateral spinothalamic tracts; located in white matter ventral to the denticulate ligament, hence the anatomical basis for the anterolateral cordotomy; concerned with the transmission of nociceptive and thermal information and with crude (nondiscriminative) touch. (05 Mar 2000) |
| anti-allergic and respiratory system agents | A collective term for drugs used to treat allergic reactions as well as those drugs that produce an effect on the respiratory system. (12 Dec 1998) |
| arch-loop-whorl system | See: Galton's system of classification of fingerprints. (05 Mar 2000) |