IBHRE CEPS - Trouble Questions with correct answers

168. Compared to the the permanent pacemaker, does a temp pacer have constant current or voltage? Also, how much voltage can it generate? 5V or 20V? - correct answer Constant current, 20V. (Doubles 9.5V) 171. Which patient with acute MI is most likely to need a temp pacer? Inferior MI, Mobitz I AV Bock Inferior MI, bundle branch block Anterior MI, Mobitz I AV Bock Anterior MI, bundle branch block - correct answer Anterior MI, bundle branch block Acute BBB post MI should be seen as a warning and often proceeds CHB. The RCA commonly supplies blood to the AV node making the impact of an Anterior MI more significant 12. For maximum electrical safety, the ECG monitored patient should be _____________, and the monitor chassis should be _______________ or non-conductive. (Grounded vs Ungrounded) - correct answer Ungrounded, grounded 34. What channel is responsible for the SA and AV node upstroke? - correct answer Ca++ Slow Channel 38. How does gender effect SVT frequency for AVNRT and AVRT? - correct answer Women twice as likely to get AVNRT, men twice as likely to get AVRT 39. The plateau (phase 2) occurs on the surface ECG during the_________ , and during mechanical _________________ . - correct answer QT interval, Systole 48. The pause after atrial pacing is termed: - correct answer Overdrive suppression 49. Most arrhythmias in the EP lab are caused by?