When the AV bundle is completely interrupted, as in complete heart block, the

Question 1

A. Atrial beat becomes irregular.

B. PR interval shows beat-to-beat variability.

C. Ventricular filling shows beat-to-beat variability.

D. QRS complex shows beat-to-beat variability.

E. Ventricular rate falls below 50 beats/minute.

Question 2

A. False The atria continue to beat regularly at normal sinus rate.

B. True In complete block, atria and ventricles beat independently at different rates.

C. True Due to loss of the normal sequence of the atrial and ventricular contractions.

D. False There is usually a single ventricular pacemaker giving an abnormal but regular QRS complex.

E. True The ventricular intrinsic rate of beating is 30–40/minute.

Sudhakar · Answer 1 · 2019-10-29T00:19:11+0000

A. False The atria continue to beat regularly at normal sinus rate.

B. True In complete block, atria and ventricles beat independently at different rates.

C. True Due to loss of the normal sequence of the atrial and ventricular contractions.

D. False There is usually a single ventricular pacemaker giving an abnormal but regular QRS complex.

E. True The ventricular intrinsic rate of beating is 30–40/minute.

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