CRAT NEW COMPREHENSIVE EXAM SCRIPT COMPLETE QUESTIONS VERIFIED SOLUTIONS.pdf 1. Document information Change

CRAT NEW COMPREHENSIVE EXAM SCRIPT COMPLETE QUESTIONS VERIFIED SOLUTIONS




Question:
What does the P wave represent?

Answer:
Atrial depolarization



Question:
What does the QRS complex represent?

Answer:
Atrial repolarization and ventricular depolarization



Question:
Q wave indicates what?

Answer:
Dead myocardial tissue. Always a negative deflection



Question:
What is the natural pacemaker of the heart?

Answer:
SA node



Question:
3 types of pacemakers

Answer:

, 1) single (either RA or RV) 2) dual chamber (RA and LV) 3) bi-ventricular (RV and LV -->
Congestive Heart Failure)



Question:
Which HB would you NOT need a pacemaker for?

Answer:
First-degree AV block (prolonged PRI >0.20 seconds)



Question:
Define intrinsic beats

Answer:
The patient's own heart beat



Question:
What is sensing?

Answer:
The ability for the heart to sense and respond to the electrical activity of the heart



Question:
What is capture?

Answer:
The pacemaker sends a stimulus to the heart which causes the heart to depolarize



Question:
Failure to sense

Answer:
Lack of pacemaker spikes where they should have been. Battery can be dead.