Advanced Arrhythmia Exam Prep Study Guide Review With 53 Correctly Answered Questions Latest Update .

a normal QRS interval is {Ans: < .12 seconds (.04-.11)}premature ventricular contraction (PVC) {Ans: rate: can occur at any rate regularity: regular but interrupted by premature beat P waves: usually NOT seen PR: not applicable - you don't measure it QRS: wide and bizarre in shape; >.12 sec wide T wave: OPPOSITE of QRS}sinus bradycardia (SB) {Ans: < 60 bpm regularity: regular PR: upright, matching, married to QRS PR: 0.12 - .20, constant QRS: < .12 secs}junctional escape HR? {Ans: 40 - 60 bpm}(V Tach) ventricular tachycardia {Ans: rate: GREATER THAN 100 HR regularity: USUALLY regular, but CAN BE a bit irregular QRS: wide and bizarre; > 0.12 secs wide T wave: opposite of QRS}what does P wave represent on the ECG {Ans: ventricular depolarization}backup pacemaker {Ans: AV node w/expected firing rate of 40-60 bpm}sinus exit block {Ans: missing ONE P-QRS-T}A Flutter {Ans: rate: 250 - 350 bpm HR varies!! regularity: regular or irregular P waves: "think of a shark fin or waves" PR: not applicable - you don't measure it QRS: < .12 secs}what does P wave represent on the ECG {Ans: repolarization of ventricles}3*AVB {Ans: rate: 60