Micturition syncope

Micturition syncope

Micturition syncope or post-micturition syncope is the name given to the human phenomenon of fainting shortly after or during urination.

People often become pale, nauseated, sweaty and weak before they lose consciousness. Sometimes even defecating, coughing or severe vomiting may cause fainting in a similar way.

Contents

Epidemiology

Responsible for 2.4 to 8.4 percent of all cases of fainting in adults, it most commonly occurs in males. The events often occur at night or after awaking (this means that it occurs while standing immediately after being recumbent for some time).

Causes

When one strains to increase the flow of urine it stimulates the vagus nerve (usually more pronounced in elderly men with large prostates). The vagus nerve stimulus causes slowing down of the heart (bradycardia) and severe drop in blood pressure. The heart cannot perform as a pump effectively because insufficient blood comes to it.

Treatment

There is no specific treatment for micturition syncope. General advice to men who have a micturition syncope is to sit while urinating, and to sit on the edge of the bed for a while before getting up and going to the toilet.

External links


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Look at other dictionaries:

  • Micturition syncope — The temporary loss of consciousness upon urinating. (Syncope is the temporary loss of consciousness or, in plain English, fainting). The situations that trigger this reaction are diverse and include having blood drawn, straining while urinating… …   Medical dictionary

  • Syncope, micturition — The temporary loss of consciousness upon urinating. (Syncope is the temporary loss of consciousness or, in plain English, fainting). The situations that trigger this reaction are diverse and include having blood drawn, straining while urinating… …   Medical dictionary

  • Syncope (fainting) — Partial or complete loss of consciousness with interruption of awareness of oneself and ones surroundings. When the loss of consciousness is temporary and there is spontaneous recovery, it is referred to as syncope or, in nonmedical quarters,… …   Medical dictionary

  • Syncope, coughing — The temporary loss of consciousness upon coughing. Syncope is the temporary loss of consciousness or, in plain English, fainting. The situations that trigger this reaction are diverse and include having blood drawn, straining while urinating… …   Medical dictionary

  • Syncope, defecation — The temporary loss of consciousness upon defecating (having a bowel movement). Syncope is the temporary loss of consciousness or, in plain English, fainting. The situations that trigger this reaction are diverse and include having blood drawn,… …   Medical dictionary

  • Syncope, swallowing — The temporary loss of consciousness upon swallowing. Syncope is the temporary loss of consciousness or, in plain English, fainting. The situations that trigger this reaction are diverse and include having blood drawn, straining while urinating… …   Medical dictionary

  • syncope — Loss of consciousness and postural tone caused by diminished cerebral blood flow. [G. synkope, a cutting short, a swoon] Adams Stokes s. s. due to complete AV block. SYN: Morgagni Adams Stokes s.. cardiac s. fainting with unconsciousness of any …   Medical dictionary

  • Coughing syncope — The temporary loss of consciousness upon coughing. Syncope is the temporary loss of consciousness or, in plain English, fainting. The situations that trigger this reaction are diverse and include having blood drawn, straining while urinating… …   Medical dictionary

  • Defecation syncope — The temporary loss of consciousness upon defecating (having a bowel movement). Syncope is the temporary loss of consciousness or, in plain English, fainting. The situations that trigger this reaction are diverse and include having blood drawn,… …   Medical dictionary

  • Post-micturition convulsion syndrome — Post micturition convulsion syndrome, also colloquially known as piss shivers or pee shivers is a phenomenon in which one feels a shiver running down the spine following urination.cite news url = http://www.straightdope.com/classics/a4 225.html… …   Wikipedia

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