CCDS EXAM REVIEW|QUESTIONS WITH 100% CORRECT ANSWERS

Document Content and Description Below

What lead insulation materials are known for reducing fibroblast in growth and susceptibility to Metal-ion induced oxidation (MIO) and Environmental Stress-Cracking (ESC) Correct Answer ePTFE and 80A ... polyurethane What is the most common cause of safety pacing or "ventricular safety standby?" Correct Answer Ventricular Ectopy Ventricular safety standby is a feature designed to avoid the inappropriate inhibition of V-pacing due to crosstalk over sensing of an Ap event on the ventricular EGM. Not sure why the book says that PVCs are the most common cause, perhaps because bipolar leads have made Crosstalk such a rare-occurring issue now. Which electrode material is most likely to result in higher pacing thresholds and higher degree of polarization? Correct Answer Elgiloy What phase of the action potential correlates to relative refractory period? Correct Answer 3 The ventriculoatrial conduction time of a pacemaker patient with a typical endless-loop-tachycardia may be calculated by which equation? Correct Answer (upper rate limit interval) - ( AV delay + PVARP) ???????????????? or is it just MTR (URL) - AVD For treatment of arrhythmias, most drugs work by altering _______ or __________. Correct Answer Conductivity or Refractoriness 1Hz = ??bpm Correct Answer 60bpm What would cause a more significant drain on battery charge... ATP before charge or ATP during charge? Correct Answer ATP DURING charge Increased current density is expected with what type of lead feature? Correct Answer Small tip (cathode) surface area ________ is the component of a device that converts both positive and negative components into a signal with only one component. Correct Answer Rectifier Which of the following would account for the most common cause of inappropriate Mode switching? A: Ventricular lead sensing atrial signals [Show More]

Last updated: 1 year ago

Preview 1 out of 5 pages