ECG Tut

• Ventricular Tachycardia:

  • medical emergency + needs defibrillator as it can lead to ventricular fibrillation
  • cant distinguish a P wave
  • regular pattern of heart rate, but tachycardia

  
• Ventricular Fibrillation:

  • ventricular tachycardia can lead to ventricular fibrillation
  • where the ventricles are continuously fibrillate
  • can lead to myocardial infarction, but itself is not a myocardial infarction

  
• • atrial flutter is less common than atrial fibrillation
  • flutter is an unstable rhythm
  • regularly irregular
  • saw-tooth features
• 3rd degree heart block:

  • 3rd degree heart block is a total loss of electrical connection between atria and ventricles
• Atrial Fibrillation and Atrial Flutter:

  • Possible causes?
  • Pathology: - Myocardial ischemia (CAD- AMI – Heart failure – COPD or PEs), myocardial irritability (hypoxia, cardiac surgery), electrolytes
  • Health: - nicotine, caffeine, alcohol
  • Possible signs and symptoms?
  • Irregular to very irregular raised pulse
  • SOBOE – loss of atrial kick
• • Atrial Fibrillation - Irregular / chaotic wave forms from numerous different locales
  • Atrial Flutter - Regular repeating waves, Caused by a single big circular circuit, Saw-tooth shape
  • Nodal/Junctional Rhythm - There is no atrial electrical activity
• AV Heart Block:

  • First degree heart block – Long PR interval no dropped beats
  • Second degree heart block (2 types)
  • Mobitz Type I – PR interval Longer, Longer, Longer .... Drop
  • Mobitz Type II – PR interval Longer but constant ..... AND Drop
  • Third degree heart block – PR interval all over the place