After a myocardial infarction, a patient has slowing of atrial contraction. The nurse would anticipate seeing the most evidence of this dysfunction in which part of the electrocardiogram tracing?

Question

Quizplus · Accepted Answer

The PR interval reflects the time it takes for the impulse to travel from the atria to the ventricles. Slowing of atrial contraction would indicate impairment in this conduction, causing a prolonged PR interval on the electrocardiogram tracing.

After a Myocardial Infarction, a Patient Has Slowing of Atrial