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CRAT Study Guide with correct answers
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Normal PRI interval Answer 0.12-0.20 Normal QRS interval Answer 0.11 or less What does the P wave represent? Answer Atrial depolarization What does the QRS complex represent? Answer Atrial repolarization and ventricular depolarization Q wave indicates what? Answer Dead myocardial tissue. Always a negative deflection What is the natural pacemaker of the heart? Answer SA node 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) Which HB would you NOT need a pacemaker for? Answer First-degree AV block (prolonged PRI >0.20 seconds) Define intrinsic beats Answer The patient's own heart beat
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