ECG Case #11 - Question #2 Answer

Answer: No treatment is needed. AV blocking medications should be avoided.

Explaination: First degree AV nodal block is a benign finding on an ECG and does not present any significant danger to the patient. Data is conflicting, however many cardiologists would simply avoid AV nodal blocking agents in a patient with 1st degree AV block. On very rare occasion the PR interval can be so prolonged that the P wave actually occurs during the preceding QRS complex. This results in the atrium contracting at the same time as the ventricle. If significant symptoms are present, a pacemaker can resolve them in this uncommon scenario.