| acute situational reaction | An acute emotional reaction related to extreme environmental stress. Synonym: acute situational reaction. (05 Mar 2000) |
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| situational psychosis | A transitory but severe emotional disorder caused in a predisposed person by a seemingly unbearable situation. (05 Mar 2000) |
| situational test | In psychology and psychiatry, a test situation in which a subject is observed as he or she performs a task or an actual sample of the job or role to be performed; e.g., a test used to select individuals for the Office of Strategic Services during the Second World War and for managerial positions today. (05 Mar 2000) |
| Adams-Stokes syncope | Syncope due to complete atrioventricular block. (05 Mar 2000) |
| cardiac syncope | Fainting with unconsciousness of any cardiac cause. (05 Mar 2000) |
| vasodepressor syncope | Faintness or loss of consciousness due to reflex reduction in blood pressure. Synonym: vasovagal syncope. (05 Mar 2000) |
| vasovagal syncope | A form of syncope (fainting) that occurs as a part of a normal physiologic response to stress (often emotional stress). The individual becomes lightheaded, nauseated, flushed, feels warm and then may lose consciousness for several seconds. (27 Sep 1997) |
| carotid sinus syncope | <cardiology> Syncope which results from the over activity of the carotid sinus. Attacks may be spontaneous or produced by pressure on the carotid sinus. (27 Sep 1997) |
| micturition syncope | Syncope occurring in association with the act of emptying the bladder. (05 Mar 2000) |
| postural syncope | Syncope upon assuming an upright position; caused by failure of normal vasoconstrictive mechanisms. (05 Mar 2000) |
| hysterical syncope | Fainting due to, or to avoid, emotional stress. (05 Mar 2000) |
| swallow syncope | Faintness or unconsciousness upon swallowing. This is nearly always due to excessive vagal effect on the heart that may already have bradycardia or atrioventricular block. (05 Mar 2000) |
| syncope | <clinical sign> A temporary suspension of consciousness due to generalised cerebral ischaemia, a faint or swoon. (19 Jan 1998) |
| syncope, vasovagal | A transient vascular and neurogenic reaction marked by pallor, nausea, sweating, bradycardia, and rapid fall in arterial blood pressure which, when below a critical level, results in loss of consciousness and characteristic electroencephalographic changes. It is most often evoked by emotional stress associated with fear or pain. It is also called vasovagal attack and gowers' syndrome. (12 Dec 1998) |
| tussive syncope | Fainting as a result of a coughing spell, caused by persistent increased intrathoracic pressure diminishing venous return to the heart, thus lowering cardiac output; most often occurs in heavy-set male smokers who have chronic bronchitis. Synonym: Charcot's vertigo, laryngeal vertigo. (05 Mar 2000) |