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Understanding the Electrocardiogram

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  1. Home
  2. Understanding the Electrocardiogram In Health & Disease
  3. 1.0.0 Generation of the ECG
  4. 1.8.0 Electrodes

1.8.1

Electrical activity in individual fibers and/or the entire heart can be recorded by two extracellular electrodes  of opposite polarity (one positive, the other negative) placed on the surface of individual fibers, or on the surface of the heart. The wave form recorded as the cells sequentially depolarize and then sequentially repolarize is an extracellular electrogram.

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  • 1.8.0 Electrodes
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  • Introduction to First Edition
  • 1.0.0 Generation of the ECG
    • 1.1.0 Basic Physiology
    • 1.2.0 SA Node & Pacemakers
    • 1.3.0 Atrial Depolarization
    • 1.4.0 Atrio Ventricular Conduction
    • 1.5.0 Ventricular Depolarization
    • 1.6.0 Repolarization
    • 1.7.0 Events at the Cellular Level
    • 1.8.0 Electrodes
      • 1.8.1
      • 1.8.2
      • 1.8.3
      • 1.8.4
      • 1.8.5
      • 1.8.6
      • 1.8.7
      • 1.8.8
      • 1.8.9
      • 1.8.10
      • 1.8.11
      • 1.8.12
      • 1.8.13
      • 1.8.14
    • 1.9.0 ECG Leads and Placement
  • 2.0.0 The Normal Electrocardiogram
  • 3.0.0 Inter and intra-ventricular Conduction Disturbances
  • 4.0.0 Ventricular Hypertrophy
  • 5.0.0 ELECTROLYTE ABNORMALITIES, DRUG EFFECTS AND THE LONG QT SYNDROMES
  • 6.0.0 Ischemia and Infarction - Introduction (frame i and ii)
  • 7.0.0 Tachycardias- Introduction
  • 8.0.0 The Bradycardias frame i-introduction
  • 9.0.0 The ECG of Heart Murmurs-introduction
  • 10.0.0 The Electrocardiogram in the Emergency Department-Introduction
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