What Is Micturition Syncope

Micturition (or post-micturition) syncope is fainting during or, more commonly, immediately after urination due to a severe drop in blood pressure. Micturition syncope is most common in older men and usually occurs at night after a deep sleep.

Is micturition syncope is harmful?

Most of the time, micturition syncope is not serious. This is also true of fainting for other reasons, like fainting at the sight of blood or fainting when pregnant.

Is micturition syncope a type of vasovagal syncope?

Micturition syncope is a neurally mediated syncope, one of a number of ‘situational syncopes’; others including defecation syncope and cough syncope. The underlying cause of micturition syncope is thought to be related to vasovagal syncope with hypotension and possibly bradycardia.