Quantitative relation between sites of atrial impulse origin and cycle length.

J. P. Boineau, R. B. Schuessler, William R Roeske, L. J. Autry, C. B. Miller, A. C. Wylds

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

Having previously described the multicentric origin of the atrial impulse from sites widely distributed over the right atrium as well as an intrinsic link between these sites of origin and cycle length (CL), we undertook a quantitative study of this relationship. In 132 dogs anesthetized with pentobarbital sodium or fentanyl citrate, we recorded atrial activation sequence maps from 360 closely positioned electrodes and determined locations of impulse origin at heart rates between 80 and 240 (CL between 750 and 250). We used cardiac nerve stimulation and agonist-antagonist infusion to produce changes in CL and impulse origin. Results demonstrate a significant correlation between site of impulse origin and CL. These sites, associated with both the sinus node (SN) and extranodal sites, function predictably and consistently controlling impulse initiation at heart rates above and below rates at which the SN predominates. This relationship can be used to specify an anatomic-functional model of atrial pacemaker hierarchy and to quantitate the response of different atrial regions to specific pharmacological and physiological interventions.

Original languageEnglish (US)
JournalThe American journal of physiology
Volume245
Issue number5 Pt 1
StatePublished - Nov 1983
Externally publishedYes

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Sinoatrial Node
Heart Rate
Anatomic Models
Fentanyl
Pentobarbital
Heart Atria
Electrodes
Pharmacology
Dogs
sodium citrate

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Boineau, J. P., Schuessler, R. B., Roeske, W. R., Autry, L. J., Miller, C. B., & Wylds, A. C. (1983). Quantitative relation between sites of atrial impulse origin and cycle length. The American journal of physiology, 245(5 Pt 1).

Quantitative relation between sites of atrial impulse origin and cycle length. / Boineau, J. P.; Schuessler, R. B.; Roeske, William R; Autry, L. J.; Miller, C. B.; Wylds, A. C.

In: The American journal of physiology, Vol. 245, No. 5 Pt 1, 11.1983.

Research output: Contribution to journalArticle

Boineau, JP, Schuessler, RB, Roeske, WR, Autry, LJ, Miller, CB & Wylds, AC 1983, 'Quantitative relation between sites of atrial impulse origin and cycle length.', The American journal of physiology, vol. 245, no. 5 Pt 1.
Boineau JP, Schuessler RB, Roeske WR, Autry LJ, Miller CB, Wylds AC. Quantitative relation between sites of atrial impulse origin and cycle length. The American journal of physiology. 1983 Nov;245(5 Pt 1).
Boineau, J. P. ; Schuessler, R. B. ; Roeske, William R ; Autry, L. J. ; Miller, C. B. ; Wylds, A. C. / Quantitative relation between sites of atrial impulse origin and cycle length. In: The American journal of physiology. 1983 ; Vol. 245, No. 5 Pt 1.
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