KROK 1 2013 – Question 147 · KROK (Medicine) · Physiology

Since a patient has had myocardial infarction, atria and ventricles contract independently from each other with a frequency of 60-70 and 35-40 per minute. Specify the type of heart block in this case:

  1. A. Partial atrioventricular
  2. B. Intraventricular
  3. C. Intra-atrial
  4. D. Complete atrioventricular
  5. E. Sino-atrial
Hint

Compare the two rates and ask at what level of the conduction pathway transmission must fail, and to what degree, for the ventricles to take up their own slower pacemaker.

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