Critical Care Exam 1 Correct Questions & Answers(GRADED A)
P wave - ANSWER Depolarization of the atria PR interval - ANSWER -Normal is 0.12 to 0.2 seconds - onset of atrial depolarization until onset of ventricular polarization QRS complex - ANSWER -Normal is 0.06 to 0.11 seconds -Ventricular depolarization -systole T wave - ANSWER -appears after QRS complex - Ventricular repolarization -Spiked T-wave occurs with hyperkalemia U wave - ANSWER - repolarization of the purkinje fibers - seen in patients with hypokalemia SA node - ANSWER the pace-maker of the heart; where the impulse conduction of the heart usually starts; located in the top of the right atrium just below superior vena cava *sends impulses 60-100 BPM Normal Sinus Rhythm - ANSWER Rate is 60
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