Final answer:
A second-degree AV block, type 2 is a specific type of heart block that results in a skipped heartbeat or dropped QRS complex on an ECG. It is characterized by a consistent PR interval but intermittent dropped beats.
Step-by-step explanation:
A second-degree AV block, type 2 is a specific type of heart block that occurs when some signals from the SA node reach the AV node but are not conducted to the ventricles.
This results in a skipped heartbeat or dropped QRS complex on an ECG. It is characterized by a consistent PR interval but intermittent dropped beats. For example, on an ECG, you may see P waves without subsequent QRS complexes.