Tussive (cough) syncope
It is rare and it is produced with a paroxysm of nonproductive violent coughing, resulting in persistent increase in intrathoracic pressure, reduction in venous return to heart and hence reduced cardiac output. The victims are almost exclusively middle-aged, overweight men with lung disease.
Micturition syncope
Is diagnosed when syncope occurs during or after urination.
The person has almost always just arisen from a period of prolonged recumbency.
Onset is abrupt with little or no warning; duration is brief and followed by full recovery.
Deglutition syncope
It is uncommon. Certain types of food or carbonated or cold beverages
can stimulate esophageal sensory- receptors that trigger reflex sinus bradycardia or AV block resulting in syncope.
Defecation syncope
Occurs in older individuals with constipation and the mechanism is due to valsalva like manoeuvre.
It is rare and it is produced with a paroxysm of nonproductive violent coughing, resulting in persistent increase in intrathoracic pressure, reduction in venous return to heart and hence reduced cardiac output. The victims are almost exclusively middle-aged, overweight men with lung disease.
Micturition syncope
Is diagnosed when syncope occurs during or after urination.
The person has almost always just arisen from a period of prolonged recumbency.
Onset is abrupt with little or no warning; duration is brief and followed by full recovery.
Deglutition syncope
It is uncommon. Certain types of food or carbonated or cold beverages
can stimulate esophageal sensory- receptors that trigger reflex sinus bradycardia or AV block resulting in syncope.
Defecation syncope
Occurs in older individuals with constipation and the mechanism is due to valsalva like manoeuvre.