Heart rate variability in inappropriate sinus tachycardia.


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.

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@article{Castellanos1998HeartRV, title={Heart rate variability in inappropriate sinus tachycardia.}, author={Ana M. Castellanos and Federico Moleiro and Simon C Chakko and Helbert Acosta and Heikki Huikuri and Raul David Mitrani and Robert Jerome Myerburg}, journal={The American journal of cardiology}, year={1998}, volume={82 4}, pages={531-4} }