What is the term for the fail-safe mechanism that allows a lower pacemaker to take over when a higher site fails?
A)AV conduction
B)polarization
C)escape
D)irritability

Question

Quizplus · Accepted Answer

The term for the fail-safe mechanism that allows a lower pacemaker to take over when a higher site fails is called an "escape" rhythm or pacemaker. When the SA node (the primary pacemaker site) fails, another site (such as the AV node or Purkinje fibers) will take over and produce electrical impulses at a slower rate, which is known as an escape rhythm. This mechanism helps maintain a consistent heart rate even in the event of pacemaker failure. Therefore, the correct option is C) escape.

What Is the Term for the Fail-Safe Mechanism That Allows