CRAT STUDY GUIDE QUESTIONS WITH CORRECT ANSWERS

CRAT STUDYGUIDEQUESTIONSWITHCORRECT v v v v v




ANSWERS 2025/2026 RATED A+ v v v v




Normal PRI interval - CORRECT ANSWER -0.12-0.20
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Normal QRS interval - CORRECT ANSWER -0.11 or less
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What does the P wave represent? - CORRECT ANSWER -Atrial depolarization
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What does the QRS complex represent? - CORRECT ANSWER -Atrial repolarization and ventricular
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depolarization
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Q wave indicates what? - CORRECT ANSWER -Dead myocardial tissue. Always a negative deflection
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What is the natural pacemaker of the heart? - CORRECT ANSWER -SA node
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3 types of pacemakers - CORRECT ANSWER -1) single (either RA or RV)
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2) dual chamber (RA and LV) v v v v




3) bi-ventricular (RV and LV --> Congestive Heart Failure) v v v v v v v




Which HB would you NOT need a pacemaker for? - CORRECT ANSWER -First-degree AV block (prolonged
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PRI >0.20 seconds)
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Define intrinsic beats - CORRECT ANSWER -The patient's own heart beat
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What is sensing? - CORRECT ANSWER -The ability for the heart to sense and respond to the electrical
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activity of the heart
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