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Understanding the Electrocardiogram

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  2. Understanding the Electrocardiogram In Health & Disease
  3. 5.0.0 ELECTROLYTE ABNORMALITIES, DRUG EFFECTS AND THE LONG QT SYNDROMES

5.2.0 High Potassium (9)

The electrocardiogram is uniquely sensitive to changes in extracellular potassium and calcium. The electrocardiogram on this and on the next several pages demonstrates the effects of an increase in extracellular potassium. Shown here is the ECG from an 82 year old male whose serum potassium concentration was 4.2 mM. The ECG is normal with the possible exception of the R wave which measures 2.5mV (29mm) in lead V5. This R wave amplitude is above normal limits and suggests the possibility of left ventricular hypertrophy,

  • 5.2.1 (10)
  • 5.2.2(frame 11)
  • 5.2.3 (12)
  • 5.2.4 (13)
  • 5.2.5(14)
  • 5.2.6 (15)
  • 5.2.7(16)
  • 5.2.8(17)
  • 5.2.9 (18)

Book traversal links for 5.2.0 High Potassium (9)

  • 5.1.8 (8)
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  • 5.2.1 (10)

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Book navigation

  • Introduction to First Edition
  • 1.0.0 Generation of the ECG
  • 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
    • 5.1.0 Ion Channel R review (frame 1)
    • 5.2.0 High Potassium (9)
      • 5.2.1 (10)
      • 5.2.2(frame 11)
      • 5.2.3 (12)
      • 5.2.4 (13)
      • 5.2.5(14)
      • 5.2.6 (15)
      • 5.2.7(16)
      • 5.2.8(17)
      • 5.2.9 (18)
    • 5.2.10 (frame 19)
    • 5.3.0 low potassium (frame 28)
    • 5.4.0 CHANGES IN CALCIUM AND SODIUM (frame 36)
    • 5.5.0 Drug effects (frame 45)
    • 5.6.0 (frame 96) Hypothermia
    • 5.7.0 Brugada syndrome frame 116
  • 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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