Critical Care Terminologies Combo Exam 1 with Questions and Latest Solutions

Critical Care Terminologies Combo Exam 1 with Questions and Latest Solutions 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 60-100/ minute Rhythm is regular P wave present PR interval: normal 0.12-0.20 QRS complex:normal Interpretation: normal sinus rhythm