Vasovagal Syncope and Associated Clinical Features

Mechanism and Clinical Characteristics

Vasovagal syncope is characterized by transient loss of consciousness due to cerebral hypoperfusion, typically lasting less than a minute, as noted by the European Society of Cardiology 2
The European Society of Cardiology guidelines specifically note that incontinence may occur during vasovagal syncope episodes, which can be attributed to a reflex-mediated drop in blood pressure and often heart rate, leading to reduced cerebral blood flow 1, 2
Urinary incontinence can occur during syncope episodes and does not differentiate between epileptic seizures and syncope, according to the European Heart Journal 1

Incontinence alone cannot be used to differentiate between epileptic seizures and syncope; other clinical features such as duration of loss of consciousness, presence of prodromal symptoms, pattern of movements, and recovery pattern must be considered for proper diagnosis, as recommended by the European Society of Cardiology 1, 2, 3
Patient education about recognizing prodromal symptoms and using countermeasures, such as physical counterpressure maneuvers, is essential for preventing syncope episodes, as suggested by the American Heart Association 3
Lying down or sitting with legs crossed and muscles tensed can abort an impending episode, and adequate hydration and sufficient salt intake are recommended as first-line measures, according to the European Society of Cardiology 2, 3