Heart rate changes preceding ventricular ectopy in patients with ventricular tachycardia caused by reentry, triggered activity, and automaticity. Stein, K., Karagounis, L., Markowitz, S., Anderson, J., & Lerman, B. Am Heart J, 136(3):425--34, 1998.
bibtex   
@Article{RSM:Ste98,
  author =       "K.M. Stein and L.A. Karagounis and S.M. Markowitz and
                 J.L. Anderson and B.B. Lerman",
  title =        "Heart rate changes preceding ventricular ectopy in
                 patients with ventricular tachycardia caused by
                 reentry, triggered activity, and automaticity.",
  journal =      "Am Heart J",
  year =         "1998",
  volume =       "136",
  number =       "3",
  pages =        "425--34",
  robnote =      "The purpose of this study was to compare and contrast
                 autonomic tone preceding spontaneous ventricular
                 arrhythmias in patients with reentrant, triggered, and
                 automatic forms of VT. Heart rate accelerates before
                 spontaneous ventricular ectopy in patients with VT. The
                 acceleration is disproportionate to parasympathetic
                 withdrawal, implicating increased endogenous
                 sympathetic tone in the genesis of spontaneous
                 ventricular arrhythmias caused by all three
                 electrophysiologic mechanisms: reentry, triggered
                 activity, and automaticity. LQTS. NO hard copy",
}

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