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Selective Atrial Vagal Denervation Guided by Evoked Vagal Reflex to Treat Refractory Vasovagal Syncope
Author(s) -
LIANG ZHAO,
JIAYOU ZHANG,
ZONGGUI WU,
DENING LIAO
Publication year - 2012
Publication title -
pacing and clinical electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.686
H-Index - 101
eISSN - 1540-8159
pISSN - 0147-8389
DOI - 10.1111/j.1540-8159.2011.03320.x
Subject(s) - medicine , denervation , vagovagal reflex , vasovagal syncope , reflex , cardiology , anesthesia , tilt table test , ablation , heart rate , refractory (planetary science) , blood pressure , physics , astrobiology
A 57‐year‐old woman with refractory vasovagal syncope and a sinus pause of 6.8 seconds during tilt‐table test accepted the suggestion of atrial vagal denervation. Radiofrequency pulses were delivered on positive vagal reflex sites according to the standard of heart rate (HR) drop ≥20% after high frequency stimulation (HFS). The endpoint of inexistence of HR decrease at repeating HFS was achieved in 18 sites. No syncope attacked during 12 months and three tilt‐table tests performed at 1, 6, and 12 months were negative. Extensive ablation on atrial endocardium for vagal denervation is suggested to be efficient in cardioinhibition type of VVS. (PACE 2012;1–5)