| occupational safety and health administration | One of the U.S. Agencies responsible for regulation of biotechnology. The major law under which the agency has regulatory powers is the Occupational Safety and Health act. (09 Oct 1997) |
|---|---|
| oesophageal and gastric varices | Submucosal varices of the lower oesophagus or gastric fundus mucosa, frequently caused by the development of portal collateral vessels consequent to portal hypertension. (12 Dec 1998) |
| oesophageal webs and rings | <radiology> Congenital web, web secondary to bullous disease, cervical web, Plummer-Vinson (Patterson-Kelly) syndrome, mucosal (Schatzki) ring (12 Dec 1998) |
| organization and administration | The planning and managing of programs, services, and resources. (12 Dec 1998) |
| outcome and process assessment | Evaluation procedures that focus on both the outcome or status (outcome assessment) of the patient at the end of an episode of care - presence of symptoms, level of activity, and mortality; and the process (process assessment) - what is done for the patient diagnostically and therapeutically. (12 Dec 1998) |
| task performance and analysis | The detailed examination of observable activity or behaviour associated with the execution or completion of a required function or unit of work. (12 Dec 1998) |
| tax equity and fiscal responsibility act | Pl97-248. Title II of the act specifies "provisions relating to savings in health and income security programs." this includes changes in payment for services, benefits and premiums of medicare as well as changes in provisions under medicaid and other specific programs covered by social security. Title II includes various revenue measures. (12 Dec 1998) |
| tendon sheath of abductor pollicis longus and extensor pollicis brevis muscles | The synovial sheath lining the compartment of the extensor retinaculum that contains the abductor pollicis longus and extensor pollicis brevis tendons. Synonym: vagina tendinum musculorum abductoris longi et extensoris brevis pollicis. (05 Mar 2000) |
| tendon sheath of extensor digitorum and extensor indicis muscles | The synovial sheath that surrounds the four tendons of the extensor digitorum muscle and the tendon of the extensor indicis deep to the extensor retinaculum. Synonym: vagina tendinum musculorum extensoris digitorum et extensoris indicis. (05 Mar 2000) |
| tetanus and gas gangrene antitoxins | A mixture of antibodies obtained from animals immunised against the toxins of Clostridium tetani, C. Perfringens, and C. Septicum. (05 Mar 2000) |
| third and fourth pharyngeal pouch syndrome | <syndrome> Also called the digeorge syndrome (dgs), this disorder is characterised by (1) low blood calcium levels (hypocalcaemia) due to underdevelopment (hypoplasia) of the parathyroid glands which control calcium; (2) underdevelopment (hypoplasia) of the thymus, an organ behind the breastbone in which lymphocytes mature and multiply; and (3) defects of the heart involving the outflow tracts more than from the heart. most cases of dgs are due to a microdeletion in chromosome band 22q11.2. A small number of cases have defects in other chromosomes, notably 10p13. Named after the american paediatric endocrinologist angelo digeorge. Another name for dgs is hypoplasia of the thymus and parathyroids. (12 Dec 1998) |
| threatened, endangered, and sensitive species | formal classifications of species. Sensitive Species for which population viability is a concern. Sensitive species are not federally designated under the Endangered Species act. The U.S. Fish and Wildlife Service, after study, makes the following designations (05 Dec 1998) |
| through-and-through laceration | A laceration that penetrates two surfaces of a structure, generally restricted to skin or mucosal surfaces, such as the cheek, lip, ala nasi, pinna, etc. (05 Mar 2000) |
| through-and-through myocardial infarction | Infarction that involves the whole thickness of the heart muscle from endocardium to epicardium. Synonym: through-and-through myocardial infarction. (05 Mar 2000) |
| thymus and parathyroids, hypoplasia of | See third and fourth pharyngeal pouch syndrome. (12 Dec 1998) |