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Heart rate variability in inappropriate sinus tachycardia
A Castellanos1, F Moleiro, S Chakko
1Division of Cardiology of the University of Miami School of Medicine, Florida 33101, USA.
The American Journal of Cardiology
|September 2, 1998
Abstract:
Analysis of heart rate variability in patients with inappropriate sinus tachycardia showed a 24-hour decrease in all temporal and spectral indexes, even after attempted correction to a rate of 75 beats/min. This may have resulted from a global decrease in parasympathetic activity or from a rapid sinus rate produced by other ill-defined mechanisms.