Mastering Cardiac Arrhythmias

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Questions and Answers

What is the most common cause of arrhythmias?

  • Hereditary or acquired abnormalities of the cardiac conduction system
  • Channelopathies
  • Direct damage or dilation of heart chambers (correct)
  • Sick sinus syndrome

What is the leading cause of sudden cardiac death?

  • Coronary artery disease (correct)
  • Hereditary or acquired abnormalities of the cardiac conduction system
  • Mitral valves prolapse
  • Pulmonary hypertension

What is the difference between first degree heart block and third degree heart block?

  • First degree heart block is a simple prolongation of the P-R interval on the Electrocardiogram, while third degree heart block is a complete failure (correct)
  • First degree heart block is a complete failure of the AV node, while third degree heart block is a simple prolongation of the P-R interval on the Electrocardiogram
  • First degree heart block is a prolong P-K interval, while third degree heart block is an intermittent transmission of the signal
  • First degree heart block is an intermittent transmission of the signal, while third degree heart block is a complete failure

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