| high-frequency jet ventilation | Respiratory support system used primarily with rates of about 100 to 200/min with volumes of from about one to three times predicted anatomic dead space. Used to treat respiratory failure and maintain ventilation under severe circumstances. (12 Dec 1998) |
|---|---|
| injections, jet | The injection of solutions into the skin by compressed air devices so that only the solution pierces the skin. (12 Dec 1998) |
| jet | <chemical> A variety of lignite, of a very compact texture and velvet black colour, susceptible of a good polish, and often wrought into mourning jewelry, toys, buttons, etc. Formerly called also black amber. <zoology> Jet ant, a blackish European ant (Formica fuliginosa), which builds its nest of a paperlike material in the trunks of trees. Origin: OF. Jet, jayet, F. Jaiet, jais, L. Gagates, fr. Gr.; so called from or, a town and river in Lycia Alternative forms: jeat, jayet. Source: Websters Dictionary (01 Mar 1998) |
| jet ejector pump | A suction pump in which fluid under high pressure is forced through a nozzle into an abruptly larger tube where a high velocity jet, at a low pressure in accordance with Bernoulli's law, entrains gas or liquid from a side tube opening just beyond the end of the nozzle to create suction; e.g., the pump by which steam is used to evacuate an autoclave, a water aspirator. (05 Mar 2000) |
| jet injection | Hypodermic injection of drugs by a jet injector. (05 Mar 2000) |
| jet injector | An injector that uses high pressure to force a liquid through a small orifice at a velocity sufficient to penetrate skin or mucous membrane without the use of a needle. (05 Mar 2000) |
| jet lag | An imbalance of the normal circadian rhythm resulting from subsonic or supersonic travel through a varied number of time zones and leading to fatigue, irritability, and various functional disturbances. (05 Mar 2000) |
| jet nebuliser | An atomiser that uses an air or gas stream to change a liquid into small particles. (05 Mar 2000) |
| admixture lesion | <radiology> Cyanosis and increased pulmonary blood flow, transposition (TGV), truncus arteriosis, TAPVR, tricuspid atresia (sort of intracardiac TAPVR) (12 Dec 1998) |
| andersson lesion | <radiology> Discovertebral fracture, seen in ankylosing spondylitis (12 Dec 1998) |
| Baehr-Lohlein lesion | Focal embolic glomerulonephritis occurring in bacterial endocarditis. Synonym: Baehr-Lohlein lesion. (05 Mar 2000) |
| benign lymphoepithelial lesion | Benign tumour-like masses of lymphoid tissue in the parotid gland, containing scattered small, mainly solid islands of epithelial cells. Synonym: Godwin tumour. (05 Mar 2000) |
| Bracht-Wachter lesion | A focal collection of lymphocytes and mononuclear cells within the myocardium in bacterial endocarditis. (05 Mar 2000) |
| bright t1 lesion | <radiology> (short T1), fat (lipoma, dermoid), sub-acute haemorrhage (metHb), paramagnetic agent (Gd, ? posterior pituitary), proteinaceous fluid (colloid cyst) most abnormalities cause long T1 and T2 (dark/bright) see also: dark T2 lesion (12 Dec 1998) |
| bubbly bone lesion | <radiology> Fibrous dysplasia, enchondroma, giant cell tumour (GCT), non-ossifying fibroma, osteoblastoma, myeloma, aneurysmal bone cyst (ABC), angioma, simple (solitary, unicameral) bone cyst, hyperparathyroid cyst, infection (Brodie's abscess; coccidioidomycosis; echinococcus), chondromyxoid fibroma, chondroblastoma mnemonic: FEGNOMASHIC (!!) (12 Dec 1998) |