The ECG you are looking at has one P wave for every QRS complex and the PR interval is 0.30 second. What is your interpretation?

Question

Quizplus · Accepted Answer

The presence of one P wave for every QRS complex indicates normal sinus rhythm. The PR interval of 0.30 second is within normal limits (0.12-0.20 seconds). Therefore, this ECG does not indicate third-degree heart block or atrial hypertrophy. However, the prolonged PR interval suggests first-degree heart block, which is characterized by a delay in the conduction of the electrical impulse from the atria to the ventricles.

The ECG You Are Looking at Has One P Wave