In first-degree heart block, the electrical current is delayed or blocked along normal conduction pathways ________.
A)Below the AV junction
B)In the ventricles
C)At or above the AV junction
D)Above the SA node

Question

Quizplus · Accepted Answer

In first-degree heart block, the delay or blockage occurs at or above the AV junction, which is the area between the atria and ventricles where the electrical impulses must pass through to reach the ventricles. This results in a prolonged PR interval on an electrocardiogram (ECG).

In First-Degree Heart Block, the Electrical Current Is Delayed or Blocked