| vent | ventilation; ventral; ventricle, ventricular |
|---|---|
| VLG | ventral nucleus of the lateral geniculate body |
| VPN | ventral pontine nucleus |
| VR | right arm [electrode]; valve replacement; variable ratio; vascular resistance; venous reflux; venous... |
| VRP | ventral root potential |
| lacrimal duct obstruction | Interference with the secretion of tears by the lacrimal glands. Obstruction of the lacrimal sac or nasolacrimal duct causing acute or chronic inflammation of the lacrimal sac (dacryocystitis). It is caused also in infants by failure of the nasolacrimal duct to open into the inferior meatus and occurs about the third week of life. In adults occlusion may occur spontaneously or after injury or nasal disease. (12 Dec 1998) |
|---|---|
| arteriosclerotic gangrene | Dry gangrene resulting from sclerotic changes in the arteries, with subsequent occlusion, as in the aged. (05 Mar 2000) |
| bivalent gas gangrene antitoxin | Antitoxin specific for the toxins of Clostridium perfringens and C. Septicum. (05 Mar 2000) |
| gangrene | <pathology> Death of tissue, usually in considerable mass and generally associated with loss of vascular (nutritive) supply and followed by bacterial invasion and putrefaction. Compare: necrosis. Origin: L. Gangraena, Gr. Gangraina = an eating sore (18 Nov 1997) |
| gas gangrene | <microbiology> A severe form of gangrene (tissue necrosis) caused by Clostridium infection. Also referred to as necrotising subcutaneous infection. Results in death of the subcutaneous tissues and muscle layers. See: necrotising fascitis. (27 Sep 1997) |
| gas gangrene antitoxin | Antitoxin specific for the toxin of one or more species of Clostridium that cause gaseous gangrene and associated toxaemia, especially C. Perfringens C. Novyi, C. Histolyticum, and commercially available preparations are usually polyvalent, i.e., contain antitoxin for two or more species. Synonym: pentavalent gas gangrene antitoxin. (05 Mar 2000) |
| venous gangrene | Moist gangrene due to obstruction in the return circulation. Synonym: venous gangrene. (05 Mar 2000) |
| Meleney's gangrene | Undermining ulcer of the skin and subcutaneous tissues, usually following an operation, caused by a synergistic interaction between microaerophilic nonhemolytic streptococci and aerobic haemolytic staphylococci. Synonym: Meleney's gangrene, progressive bacterial synergistic gangrene. (05 Mar 2000) |
| pentavalent gas gangrene antitoxin | Antitoxin specific for the toxin of one or more species of Clostridium that cause gaseous gangrene and associated toxaemia, especially C. Perfringens C. Novyi, C. Histolyticum, and commercially available preparations are usually polyvalent, i.e., contain antitoxin for two or more species. Synonym: pentavalent gas gangrene antitoxin. (05 Mar 2000) |
| moist gangrene | Ischemic necrosis of an extremity with bacterial infection, producing cellulitis adjacent to the necrotic areas. Synonym: moist gangrene. (05 Mar 2000) |
| cold gangrene | A form of gangrene in which the involved part is dry and shriveled. Synonym: cold gangrene, mummification necrosis, mummification. (05 Mar 2000) |
| wet gangrene | Ischemic necrosis of an extremity with bacterial infection, producing cellulitis adjacent to the necrotic areas. Synonym: moist gangrene. (05 Mar 2000) |
| white gangrene | Death of a part accompanied by the formation of grayish white sloughs. Synonym: leukonecrosis. (05 Mar 2000) |
| haemorrhagic gangrene | Gangrene occurring rarely in advanced meningococcal septicaemia. (05 Mar 2000) |
| Pott's gangrene | Dry gangrene occurring in the aged in consequence of occlusion of an artery, particularly affecting the extremities. Synonym: Pott's gangrene. (05 Mar 2000) |