Neurocardiogenic syncope: aetiology and management

Area of Science:

• Cardiology
• Autonomic Nervous System

Background:

• Neurocardiogenic syncope is the most frequent cause of fainting in outpatient settings.
• It can occur independently or alongside cardiac conditions, involving a vasovagal response with hypotension and bradycardia.
• The autonomic reflex activation underlies this condition.

Purpose of the Study:

• To elucidate the pathophysiology of neurocardiogenic syncope.
• To review diagnostic methods and treatment strategies for vasovagal syncope.

Main Methods:

• Tilt table testing is a key noninvasive method to reproduce vasovagal events.
• Review of existing literature on drug therapies and cardiac pacing for refractory cases.

Main Results:

• Tilt table testing effectively elucidates the pathophysiology of neurocardiogenic syncope.
• While most cases require no specific treatment, frequent or traumatic events necessitate intervention.
• Limited randomized controlled trials exist for drug efficacy.

Conclusions:

• Treatment for neurocardiogenic syncope should be individualized based on patient history, clinical presentation, and diagnostic findings.
• Cardiac pacing is an option for drug-refractory patients or those with severe cardioinhibitory responses.