Ask Question
24 December, 18:43

If there is a blockage between the av node and the av bundle, how will this affect the appearance of the electrocardiogram?

+4
Answers (1)
  1. 24 December, 20:12
    0
    Out of the following given choices;

    A. PR interval would be smaller

    B. QRS interval would be shorter

    C. There would be more P waves than QRS complexes

    D. There would be more QRS complexes than P waves

    E. The T wave would be absent

    The answer is C. Waves on the ECG represent the depolarization an repolarization of the atrial and ventricular walls. The sequence of waves on the ECG is P waves, QRS complex, then T waves. Therefore, If there is a blockage between the av node and the av bundle, P waves of atrial contraction are of longer intervals (more than 200 ms) compared to those of QRS complex of ventricular contraction. This is referred to as the First Degree Heart Block. In second-degree heart block, no QRS complex follows the P waves
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “If there is a blockage between the av node and the av bundle, how will this affect the appearance of the electrocardiogram? ...” in 📘 Biology if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers