High risk features in the history of a syncopal event

High risk features in the history of a syncopal event

Some features in history of syncope indicating a high risk of cardiac origin are:

1. Associated with new onset of chest discomfort or breathlessness
2. Syncope during exertion or while supine
3. Sudden onset palpitation soon followed by syncope

Syncope which occurs after prolonged standing or in crowded or hot places indicates reflex syncope as the most likely possibility. Other associated features for a low risk syncope are being triggered by cough, defecation or micturition, during a meal or post prandial, after sudden unexpected unpleasant sight, sound, smell or pain and while getting up from supine or sitting position.

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