Obi Veterinary Education
Obi Veterinary Education
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Electrocardiology

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  1. Basics of ECG Interpretation
    11 Topics
  2. Normal ECG Parameters
  3. ECG Interpretation of Chamber Enlargement
    4 Topics
  4. Dysrhythmias
  5. Bradycardia
  6. Heart Block
    3 Topics
  7. Sick Sinus Syndrome
  8. Tachycardia
    8 Topics
  9. Hyperkalemia
  10. Myocardial Hypoxia/Ischemia
  11. Low Amplitude QRS Complex
  12. Wide QRS Complex
  13. Bundle Branch Block
  14. Differentials for ECG Abnormalities

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Electrocardiology Heart Block Overview
Lesson 6, Topic 1
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Overview

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Heart block refers to a group of disorders characterized by variable conduction from the atria to the ventricles.

Heart block can be classified as

  • 1st degree heart block – prolonged conduction across the atrio-ventricular node
  • 2nd degree heart block – failure of SA impulse to activate the ventricular myocardium
  • 3rd degree heart block – no conduction through AV node, and ventricular activation is due to an automatic subsidiary pacemaker focus (escape focus)

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