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IBHRE 2023 Actual Questions and Answers 100% Correct
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IBHRE 2023 Actual Questions and Answers 100% Correct
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By: kanakkishore • 1 year ago
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IBHRE 2023 Actual Questions and Answers 100% Correct Lithium iodine battery V? - Answer 2.8V - not used for ICDs due to low peak power. Qmr Lithium Iodine/ silver V? - Answer 3.2V Qhr - used for ICDS Which is an example of a closed loop sensor? - Answer myocardial contractility and O2 stat Primary Sensor - Answer detects changes in normal physiologic responses Secondary - Answer detects internal changes from exercise - QT MV pH Tertiary - Answer detects changes as a result of exercise - piezo accelerometer The smaller the cathode surface the - - Answer higher the current density, lower the threshold, and higher the impedance (2 -6mm as small as 1.2) Anode should be how much bigger than t he cathode? - Answer 3xs (4 -20mm in pacing leads) ICD tip electrodes tend to run - - Answer 2-10mm Rv coil size? - Answer 300-600mm SVC coil size? - Answer 400-860mm OHMS LAW - Answer V=I * R ENERGY EQUATION (uJ) - Answer V * I* PW I is what? - Answer Current - flow of electrons through a circuit What can cause increase in threshold, wide QRS, latency, and undersensing? - Answer Hyperkalemia - high levels of potassium Hypercalcemia can result in? - Answer Short QT Hypocalcemia can result in? - Answer Long QT Normal Potassium level? - Answer 3.7-5.2 estimated battery life? Time= - Answer Time= Q (battery capacity in Ah) / I ( current drain in amperes) Which of the following is necessary to initiate reentr y tachy? - Answer unidirectional block of one pathway (travels down the slow up the fast) can be large (WPW) or small (AVNRT) Slew Rate - Answer max rate of change between the sensing electrode and first derivative on ECG change in V/ Change in TIm e Frequency - Answer # of times a signal fluctuates in 1 sec expressed in hertz The Basic Unit of Capacitance is? - Answer Farad Basic Unit of Energy? - Answer Joule Unit of charge? - Answer Coulomb= 1 amp per second Microvolt T wave testi ng - Answer measures beat to beat variations in the T wave, performed with exercise ideally hr between 105 and 110 Heart Rate turbulence - Answer looks at 10 to 20 beats following a PVC. absence of it is the best non invasive prediction of cardiac m ortality following a MIThe benefits of buying summaries with Stuvia:
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