| alert | <neurology> Attentive and quick to think or act. (18 Nov 1997) |
|---|---|
| adverse event | A toxic reaction to a medical therapy. (09 Oct 1997) |
| vertical displacement event | Disruption which occurs because plasma is not adequately stabilised against vertical motions. (09 Oct 1997) |
| event, adverse | In pharmacology, an adverse event is any unexpected or dangerous reaction to a drug. (12 Dec 1998) |
| event-related potentials, p300 | A late-appearing component of the event-related potential. P stands for positive voltage potential and 300 represents 300 millisecond poststimulus. Its amplitude increases with unpredictable, unlikely, or highly significant stimuli and thereby constitutes an index of mental activity. (12 Dec 1998) |
| sentinel | 1. One who watches or guards; specifically, a soldier set to guard an army, camp, or other place, from surprise, to observe the approach of danger, and give notice of it; a sentry. "The sentinels who paced the ramparts." (Macaulay) 2. Watch; guard. "That princes do keep due sentinel." 3. <zoology> A marine crab (Podophthalmus vigil) native of the Indian Ocean, remarkable for the great length of its eyestalks. Synonym: sentinel crab. Origin: F. Sentinelle (cf. It. Sentinella); probably originally, a litle path, the sentinel's beat, and a dim. Of a word meaning, path; cf. F. Sente path. L. Semita; and OF. Sentine, sentele, senteret, diminutive words. Cf. Sentry. Source: Websters Dictionary (01 Mar 1998) |
| sentinel animal | An animal deliberately placed in a particular environment to detect the presence of an infectious agent, such as a virus. (05 Mar 2000) |
| sentinel gland | A single enlarged lymph node in the omentum that may be an indication of an ulcer opposite to it in the greater or lesser curvature of the stomach. (05 Mar 2000) |
| sentinel loop sign | In gastrointestinal radiology, dilatation of a segment of large or small intestine, indicative of localised ileus from nearby inflammation. (05 Mar 2000) |
| sentinel pile | A circumscribed thickening of the mucous membrane at the lower end of a fissure of the anus. (05 Mar 2000) |
| sentinel spinous process fracture | Fracture of the spinous process with undetected deeper fracture's of the vertebral arch. (05 Mar 2000) |
| sentinel surveillance | Monitoring of rate of occurrence of specific conditions to assess the stability or change in health levels of a population. It is also the study of disease rates in a specific cohort, geographic area, population subgroup, etc. To estimate trends in larger population. (12 Dec 1998) |
| sentinel tag | Projecting edematous skin at the lower end of an anal fissure. (05 Mar 2000) |