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 Wide QRS Complex
Lesson 12 of 14
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Wide QRS Complex

ECG Findings:

  • Dog: >0.06 sec

Cat: >0.04 sec

Assuming rhythm is sinus in origin (and not ventricular)

Wide QRS complexes in a dog – slide to highlight ECG abnormalities

Etiologies:

  1. Aberrant conduction (e.g. bundle branch block) – see below
  2. Myocardial hypoxemia/ischemia
  3. Left ventricular enlargement

Consequences: As per the underlying etiology

Treatment: No specific treatment. Address the underlying etiology

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