56 Collapse
INTRODUCTION
Collapse may be sustained (recumbency), or may occur episodically, with spontaneous resolution.
Causes of collapse
1. Syncope (fainting, see Table 56.1) is a temporary loss of consciousness due to an inadequate supply of oxygen or glucose to the brain from:
Table 56.1 Distinguishing seizures from syncope
Syncope | Seizure | |
---|---|---|
Associated activity | May or may not be associated with exercise, feeding, Valsalva manoeuvre | Often at rest |
Duration of collapse | <1 minute | >1 minute |
Convulsive movements | Rare | Common |
Urine incontinence | Unusual | Common |
Return of mental alertness | Within seconds | Usually quiet, lethargic for minutes to hours |
Mucous membranes | Pale | Cyanosis or normal |
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