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Understanding the Electrocardiogram

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  1. Home
  2. Understanding the Electrocardiogram In Health & Disease
  3. 2.0.0 The Normal Electrocardiogram
  4. 2.1.0 P Wave

2.1.26

This ECG strip shows lead II from the patient whose ECGs were shown on the previous page. It demonstrates that the shift of the pacemaker from the sinus node to an ectopic site occurs after an ectopic atrial premature beat (arrow). This suppresses the sinus node and allows the ectopic pacemaker to emerge.

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  • Introduction to First Edition
  • 1.0.0 Generation of the ECG
  • 2.0.0 The Normal Electrocardiogram
    • 2.1.0 P Wave
      • 2.1.1
      • 2.1.2
      • 2.1.3
      • 2.1.4
      • 2.1.5
      • 2.1.6
      • 2.1.7
      • 2.1.8
      • 2.1.9
      • 2.1.10
      • 2.1.11
      • 2.1.12
      • 2.1.13
      • 2.1.14
      • 2.1.15
      • 2.1.16
      • 2.1.17
      • 2.1.18
      • 2.1.19
      • 2.1.20
      • 2.1.21
      • 2.1.22
      • 2.1.23
      • 2.1.24
      • 2.1.25
      • 2.1.26
      • 2.1.27
      • 2.1.28
      • 2.1.29
      • 2.1.30
      • 2.1.31
      • 2.1.32
      • 2.1.33
    • 2.2.0 PR Interval
    • 2.3.0 QRS Complex
    • 2.4.0 ST segment
    • 2.5.0 T wave
    • 2.6.0 QT Interval
    • 2.7.0 U Wave
  • 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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