what causes syncope in young adults
It results from arrhythmias, mechanical abnormalities, or structural abnormalities, and is generally seen in older adults. Cardiac causes of syncope often are unprovoked and are more likely to present in the emergency department. Sudden death in young adults with syncope is often the result of arrhythmias. Orthostatic hypotension can be caused by autonomic dysfunction, medications, or volume depletion resulting in syncope. It is rare in patients younger than 40 years, and is commonly seen in older patients with comorbid conditions.1,6.
Cardiac outflow obstruction may also result in sudden-onset syncope with little or no prodrome. One critical clue is the exertional nature, and the other is the presence of a cardiac murmur. Young athletes may present with this etiology for syncope.