Castellanos A, Moleiro F, Chakko S, Acosta H, Huikuri H, Mitrani R D, Myerburg R J
Division of Cardiology of the University of Miami School of Medicine, Florida 33101, USA.
Am J Cardiol. 1998 Aug 15;82(4):531-4. doi: 10.1016/s0002-9149(98)00373-7.
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.
