Hunainover 1 year ago

Causes of micturition syncope

While not entirely clear, doctors believe that a low blood pressure and slow heart rate play a role in micturition syncope. When your bladder is full, your blood pressure and heart rate are higher. When you empty your bladder during urination, your blood pressure and heart rate drop. This drop causes your blood vessels to widen, or dilate. Blood moves more slowly in dilated blood vessels, so it can pool in your legs. This can affect how much blood reaches your brain, causing fainting. Blood pressure also decreases when you stand, such as when standing at a urinal or getting up from a toilet.