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Malignant Neurocardiogenic Vasovagal Syncope Associated with Chronic Exaggerated Vagal Tone
Author(s) -
NAKAGAWA MIKIKO,
TAKAHASHI NAOHIKO,
YUFU KUNIO,
FUJINO TAKAO,
OOIE TATSUHIKO,
YONEMOCHI HIDETOSHI,
NOBE SEIKI,
HARA MASAHIDE,
SAIKAWA TETSUNORI,
ITO MORIO
Publication year - 2000
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 - 10.1046/j.1460-9592.2000.01695.x
Subject(s) - medicine , vasovagal syncope , asystole , syncope (phonology) , vagal tone , cardiology , metoprolol , tilt table test , anesthesia , heart rate , implantable loop recorder , heart rate variability , blood pressure , atrial fibrillation
NAKAGAWA, M., et al. : Malignant Neurocardiogenic Vasovagal Syncope Associated with Chronic Exaggerated Vagal Tone. A head‐up tilt test was performed in a 23‐year‐old woman with a history of two syncopal episodes. The patient developed abrupt syncope with 48 seconds of sinus arrest. Analysis of the high frequency (HF) power of heart rate variability over 24 hours before and after metoprolol therapy showed a significantly elevated HF power in this patient compared to age– and sex‐matched healthy subjects. It is suggested that an exaggerated resting vagal tone might be associated with the pathogenesis of prolonged asystole in our patient.