A prolonged R-R interval indicates which of the following kinds of cardiac arrhythmia?
A) Atrial fibrillation
B) Sinoatrial block
C) Premature ventricular beats
D) Paroxysmal atrial tachycardia

Question

Quizplus · Accepted Answer

Sinoatrial blocks occur when the impulse generated at the sinoatrial node is blocked before it can enter the atrial muscle.On the electrocardiogram this is demonstrated by a sudden loss of P waves resulting from the absence of atrial depolarization.The contour of the QRS complex is normal,but the R-R intervals are usually prolonged,indicating the presence of a junctional escape rhythm.

A Prolonged R-R Interval Indicates Which of the Following Kinds