Syncope: etiology, management, and when to refer

Area of Science:

• Pediatric Cardiology
• Neurology
• Internal Medicine

Background:

• Syncope in children is often caused by blood pressure dysregulation.
• Primary cardiac dysrhythmias are a less common but serious cause, especially with underlying structural heart disease.

Purpose of the Study:

• To outline an appropriate diagnostic work-up for pediatric syncope.
• To differentiate common causes from more serious underlying conditions.

Main Methods:

• Initial evaluation includes a detailed history and an electrocardiogram (ECG) with a 60-second rhythm strip.
• Tilt testing is typically reserved for recurrent episodes unresponsive to initial non-pharmacologic therapy.
• Referral to a cardiologist is recommended for complex cases or those not explained by initial assessment.

Main Results:

• Abnormalities in blood pressure control are the leading cause of syncope in pediatric patients.
• Cardiac dysrhythmias, particularly in children with structural heart disease, represent a critical differential diagnosis.
• Neurally mediated syncope may be linked to breath-holding spells and chronic fatigue syndrome in some cases.

Conclusions:

• An ECG is crucial for the initial assessment of pediatric syncope.
• Systematic evaluation guides management, distinguishing common vasovagal syncope from potentially life-threatening cardiac causes.
• Referral to pediatric cardiology ensures comprehensive evaluation for complex or persistent syncope.