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Cardiac Rate and Rhythm

Physiological, Morphological and Developmental Aspects

  • Book
  • © 1982

Overview

Part of the book series: Developments in Cardiovascular Medicine (DICM, volume 17)

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Table of contents (31 chapters)

  1. Introduction

  2. Fundamentals of Pacemaker Activity

  3. Interaction of Pacemaker Cells

  4. Establishment of Cardiac Rhythm

Keywords

About this book

In the denervated state the mammalian heart, both in vivo and in vitro, is excited at very regular intervals, the coefficient of variance of the interbeat intervals not exceeding 2%. The pacemaker that is the source of this regular ex­ citation is localised normally within the sinus node (" sino-atrial node " node of Keith and Flack), a most intriguing small piece of tissue in the caval corner of the right atrium. A small portion of this node containing a group of probably only a few thousands of cells fires spontaneously, that means without any exter­ nal influence to trigger their activity. The so called pacemaker cells do this by letting their membrane potential fall to the level where an action potential will start which subsequently activates surrounding cells to fire an action po­ tential. The first question which is tackled in this book is which processes underly this spontaneous diastolic depolarization. This is discussed in section I, concerning the fundamental properties of pacemaker cells with special refer­ ence to ionic membrane currents. Although views still quite differ about the exact nature of the membrane processes that cause the automatic pacemaker dis­ charge there is agreement that diastolic depolarization is brought about by the interaction of a number of ionic current systems, including both inward and out­ ward going currents.

Editors and Affiliations

  • Department of Physiology, University of Amsterdam, The Netherlands

    Lennart N. Bouman, Habo J. Jongsma

Bibliographic Information

  • Book Title: Cardiac Rate and Rhythm

  • Book Subtitle: Physiological, Morphological and Developmental Aspects

  • Editors: Lennart N. Bouman, Habo J. Jongsma

  • Series Title: Developments in Cardiovascular Medicine

  • DOI: https://doi.org/10.1007/978-94-009-7535-4

  • Publisher: Springer Dordrecht

  • eBook Packages: Springer Book Archive

  • Copyright Information: Martinus Nijhoff Publishers, The Hague 1982

  • Hardcover ISBN: 978-90-247-2626-4Due: 30 April 1982

  • Softcover ISBN: 978-94-009-7537-8Published: 12 October 2011

  • eBook ISBN: 978-94-009-7535-4Published: 06 December 2012

  • Series ISSN: 0166-9842

  • Edition Number: 1

  • Number of Pages: 696

  • Topics: Cardiology

  • Industry Sectors: Biotechnology, Engineering, Finance, Business & Banking, Health & Hospitals, Pharma

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