A patient reports dizziness and shortness of breath for several days.During cardiac monitoring in the emergency department (ED),the nurse obtains the following electrocardiographic (ECG)tracing.
The nurse interprets this heart rhythm as

Question

A patient reports dizziness and shortness of breath for several days.During cardiac monitoring in the emergency department (ED),the nurse obtains the following electrocardiographic (ECG)tracing. 
The nurse interprets this heart rhythm as

Quizplus · Accepted Answer

The inconsistency between the atrial and ventricular rates and the variable P-R interval indicate that the rhythm is third-degree AV block.Sinus rhythm with PACs will have a normal rate and consistent P-R intervals with occasional PACs.An accelerated idioventricular rhythm will not have visible P waves.

A Patient Reports Dizziness and Shortness of Breath for Several