Prophecy ECG Exam Questions with Correct Answers

Prophecy ECG Exam Questions with Correct Answers steps for interpreting rhythms - Answer-1. Regular/Irregular 2. Rate? 3. P before every QRS and a QRS for every P wave? 4. P-R interval measurement and is it consistent? 5. QRS wide or narrow? where to put limb leads on 12 lead EKG - Answer-on wrists and ankles best lead for atrial rhythms - Answer-lead II best lead for ventricular rhythms - Answer-V1 SA node intrinsic rate - Answer-60-100 AV node intrinsic rate - Answer-40-60 atrial depolarization - Answer-P wave PR interval - Answer-measured BEFORE P WAVE and AT THE Q norm: 0.12-.20s ***its too long if it is longer than 5 little boxes or one big box normal PR Interval - Answer-0.12-0.20 seconds ventricular depolarization - Answer-QRS complex ventricular repolarization - Answer-T wave absolute refractory period - Answer-The minimum length of time after an action potential during which another action potential cannot begin -toilet theory -problem when QT interval increases 5 large boxes - Answer-1 second 15 large boxes - Answer-3 seconds 30 large boxes - Answer-6 seconds normal P wave - Answer-less than 0.12 normal QRS - Answer-0.04-0.12s QT interval - Answer-BEGINNING OF Q TO END OF T -normal 0.34-0.43