Effect of stellectomy and vagotomy on ventricular refractoriness in dogs

P. J. Schwartz, R. L. Verrier, B. Lown

Research output: Contribution to journalArticlepeer-review

Abstract

The influence of tonic sympathetic and parasympathetic nervous system activity on ventricular refractory period duration was studied in 13 mongrel dogs. Strength-interval curves were obtained from the apex of the right ventricular endocardium with a transvenous bipolar catheter. The effects of sympathetic activity were assessed by unilateral and bilateral stellectomies and tonic vagal effects were studied by inducing cholinergic blockade with atropine (0.2 mg/kg) and by sectioning the cervical vagi bilaterally. Right stellectomy shifted the strength-interval curve 3-5 msec earlier (P

Original languageEnglish
Pages (from-to)536-540
Number of pages5
JournalCirculation Research
Volume40
Issue number6
Publication statusPublished - 1977

ASJC Scopus subject areas

  • Physiology
  • Cardiology and Cardiovascular Medicine

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