Reflex vasovagal syncope--is there a benefit in pacemaker therapy?

Area of Science:

• Cardiology
• Neurology

Background:

• Reflex vasovagal syncope is common, typically benign, but recurrent episodes significantly impair quality of life.
• Pacemaker therapy has been considered for refractory cases since the 1990s, with early studies showing promise but limited by placebo effects.

Purpose of the Study:

• To review the role of cardiac pacing in managing reflex vasovagal syncope.
• To propose a diagnostic and therapeutic flowchart for patients with probable reflex syncope.

Main Methods:

• Literature review on cardiac pacing for reflex vasovagal syncope.
• Analysis of recent data utilizing implantable loop recorders to identify patient subgroups benefiting from pacing.

Main Results:

• Implantable loop recorders identified specific patient profiles that may benefit from dual-chamber pacemakers.
• Patients over 40 with recurrent, injury-associated syncope and documented long asystole (≥3s with syncope, ≥6s without) are potential candidates.

Conclusions:

• Cardiac pacing can be a valuable option for carefully selected patients with severe reflex vasovagal syncope.
• A structured diagnostic and therapeutic approach is essential for optimizing treatment decisions.