Donate Help Contact The AHA Sign In Home
American Heart Association
Circulation Research
Search: search_blue_button Advanced Search
« Previous Article | Table of Contents | Next Article »
Circulation Research. 1977;40:342-347

This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrowRequest Permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by White, C. W.
Right arrow Articles by Abboud, F. M.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by White, C. W.
Right arrow Articles by Abboud, F. M.

Circulation Research, Vol 40, 342-347, Copyright © 1977 by American Heart Association

ARTICLES

Distribution of coronary artery flow to the canine right atrium and sinoatrial node

CW White, ML Marcus and FM Abboud

We assessed segmental distribution of blood flow to the right atrium and the region of the sinoatrial node using micropheres (7-10 mum) in 20 anesthetized dogs. Mean right atrial flow averaged 83+/-7 (SE) ml/min X 100 g, which was 56% of the left ventricular blood flow. The distribution of right atrial flow was not homogeneous. For example, flow to anterior right atriaater (105+/-8 ml/min X 100 g) than mean right atrial flow. Following ligation of the sinus node artery, perfusion of the segment containing the sinus node decreased by only 36%. Relative preservation of perfusion to the sinus node following sinus node artery ligation may explain why ligation of the sinus node artery does not alter heart rate. Furthermore, we also found that cannulation and pump perfusion of the sinus node artery at pressures 10 and 50 mm Hg greater than systolic pressure did not alter the distribution of right atrial flow. Thus, because cannulation and perfusion of the sinus node artery do not artifactually distort regional right atrial blood flow, we conclude that this should be a useful method for evaluating responsiveness of the sinus node to various interventions.


This article has been cited by other articles:


Home page
 J Am Coll CardiolHome page
O. F. Sharifov, V. V. Fedorov, G. G. Beloshapko, A. V. Glukhov, A. V. Yushmanova, and L. V. Rosenshtraukh
Roles of adrenergic and cholinergic stimulation in spontaneous atrial fibrillation in dogs
J. Am. Coll. Cardiol., February 4, 2004; 43(3): 483 - 490.
[Abstract] [Full Text] [PDF]

Home page
 Circ. Res.Home page
J. Kneller, R. Zou, E. J. Vigmond, Z. Wang, L. J. Leon, and S. Nattel
Cholinergic Atrial Fibrillation in a Computer Model of a Two-Dimensional Sheet of Canine Atrial Cells With Realistic Ionic Properties
Circ. Res., May 17, 2002; 90 (9): e73 - e87.
[Abstract] [Full Text] [PDF]

Home page
 J. Appl. Physiol.Home page
D. P. Slovut, J. C. Wenstrom, R. B. Moeckel, C. T. Salerno, S. J. Park, and J. W. Osborn
Beat-to-beat modulation of heart rate is coupled to coronary perfusion pressure in the isolated heart
J Appl Physiol, February 1, 1999; 86(2): 694 - 700.
[Abstract] [Full Text] [PDF]

Home page
 Am. J. Physiol. Heart Circ. Physiol.Home page
J. Kneller, R. J. Ramirez, D. Chartier, M. Courtemanche, and S. Nattel
Time-dependent transients in an ionically based mathematical model of the canine atrial action potential
Am J Physiol Heart Circ Physiol, April 1, 2002; 282(4): H1437 - H1451.
[Abstract] [Full Text] [PDF]


Circulation Research Home | Subscriptions | Archives | Feedback | Authors | Help | AHA Journals Home | Search
Copyright © 1977 American Heart Association, Inc. All rights reserved. Unauthorized use prohibited.