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CRAT Study Guide UPDATED ACTUAL Exam Questions and CORRECT Answers

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CRAT Study Guide UPDATED ACTUAL Exam Questions and CORRECT Answers Normal PRI interval - CORRECT ANSWER 0.12-0.20 Normal QRS interval - CORRECT ANSWER 0.11 or less What does the P wave represent? - CORRECT ANSWER Atrial depolarization What does the QRS complex represent? - CORRECT ANSWER Atrial repolarization an

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CRAT Study Guide UPDATED ACTUAL
Exam Questions and CORRECT Answers
Normal PRI interval - CORRECT ANSWER 0.12-0.20



Normal QRS interval - CORRECT ANSWER 0.11 or less



What does the P wave represent? - CORRECT ANSWER Atrial depolarization



What does the QRS complex represent? - CORRECT ANSWER Atrial repolarization and
ventricular depolarization


Q wave indicates what? - CORRECT ANSWER Dead myocardial tissue. Always a negative
deflection


What is the natural pacemaker of the heart? - CORRECT ANSWER SA node



3 types of pacemakers - CORRECT ANSWER 1) single (either RA or RV)
2) dual chamber (RA and LV)
3) bi-ventricular (RV and LV --> Congestive Heart Failure)


Which HB would you NOT need a pacemaker for? - CORRECT ANSWER First-degree AV
block (prolonged PRI >0.20 seconds)


Define intrinsic beats - CORRECT ANSWER The patient's own heart beat



What is sensing? - CORRECT ANSWER The ability for the heart to sense and respond to the
electrical activity of the heart

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