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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. 1.2.0 SA Node & Pacemakers

1.2.4


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The rate of spontaneous diastolic depolarization is modulated by the autonomic nervous system and by circulating catecholamines. The beta-adrenergic agonists isoproterenol, metaneprine and epinephrine enhance the rate of spontaneous diastolic depolarization while parasympathetic stimulation and the neuro transmitter acetylcholine slow it.

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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
      • 1.2.1
      • 1.2.2
      • 1.2.3
      • 1.2.4
      • 1.2.5
      • 1.2.6
      • 1.2.7
    • 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
    • 1.9.0 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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