IBHRE Exam - Questions And 100% Accurate Answers
What lead insulation materials are known for reducing fibroblast in growth and susceptibility to MIO and ESC? - Correct Answer-ePTFE and 80A polyurethane
What are the two most common causes of ventricular safety pacing ? - Correct AnswerVentricular ectopy and loss of atrial sensing
What electrode material would most likely result in higher pacing thresholds and high polarization? - Correct Answer-Elgiloy
Which phase of the action potential would correlate to the relative refractory period?Correct Answer-Phase 3
The ventricoloatrial conduction time of a pacemaker patient with a typical endless loop tachycardia may be calculated by what equation? - Correct Answer-None
What parameter would not be useful to prevent typical crosstalk? - Correct AnswerSafety pacing
What conductor technology combines a silver core with a high strength metal (MP35N0) to obtain a strong low resistance wire? - Correct Answer-DFT
Which of the current ICD capacitor technologies provide the highest energy density and does not require reform? - Correct Answer-Tantalum electrolytic
For treatment of arrhythmias, most drugs work by ? - Correct Answer-Altering conductivity or refractoriness
What battery discharge curve shape does a lithium silver vanadium oxide battery make ? - Correct Answer-Two humps
1.67 Hz would equal how many bum? - Correct Answer-100 bpm
T wave frequencies are typically ? - Correct Answer-Low
What is the electrical circuit that converts a signal with both positive and negative components into a signal with only one component ? - Correct Answer-Rectifier
What would account for the most common cause of inappropriate mode switching ?Correct Answer-Atrial lead sensing ventricular signals
What is the primary reason that the lithium iodine battery has not been used for ICDs?Correct Answer-The battery chemistry is only 2.8V