Ibhre 2 - Study guides, Class notes & Summaries

IBHRE CEPS Exam with Complete Solutions Ohm's law equation V=IR EKG monitored patient should be __________, monitor chassis should be ___________ (nonconductive). Why ungrounded, grounded. Grounded patient would be able to conduct leakage currents. we dont want this lb to kg 2.2 lb = 1 kg F to C C=5/9(F-32) C to F F=9/5C+32 3 things that change automaticity of automatic cells 1. slope of phase 4 2. Change of threshold potential 3. Change of resting membrane potential a systole is...

IBHRE EXAM 2024 WITH 100% CORRECT ANSWERS Voltage is? - correct answer The electromotive force pushing on electrons If the PM output voltage is 5v and the measured lead resistance is 330 ohms, then the current that flows out of the pacemaker into the heart is? - correct answer 15.15 I=V/R=5V/.33 k ohm If a unipolar lead wire has an insulation break one would expect the resistance to? - correct answer decrease for a wire fracture the resistance? - correct answer increases if th...

IBHRE Study Material: GTP Trivia Questions and Answers 100% Solved Most common form of SVT AVNRT AVNRT Characteristics 1. prolonged PR interval in the beat that starts reentry 2. HR: 150- 250 bpm 3. neck pounding, palpitations, light-headiness, near-syncope 4. narrow QRS 5. abrupt onset and termination of episodes 6. more common in women 7. frequently presents after age 20 rheobase the lowest point on a strength-duration curve at an infinitely long pulse duration chronaxie time pulse...

IBHRE Exam Questions with Complete Solutions 100% Verified Lithium iodine battery V? - Correct Answer 2.8V- not used for ICDs due to low peak power. Qmr Lithium Iodine/ silver V? - Correct Answer 3.2V Qhr- used for ICDS Which is an example of a closed loop sensor? - Correct Answer myocardial contractility and O2 stat Primary Sensor - Correct Answer detects changes in normal physiologic responses Secondary - Correct Answer detects internal changes from exercise- QT MV pH Tertiary ...

CCDS IBHRE Exam With 100% Correct Answers 2023 Rheobase the lowest point on a strength duration curve at an infinitely long pulse duration Chronaxie time the pulse width at twice the rheobase value. It approximates the most efficient stimulation pulse duration Charge (formula) Charge= I(current) x T(time) Furman's formula Energy(microjoules)= I(current)xV(voltage)xT(pulse width) Ohms law formula Voltage(electromotive force)= I(current/flow of electrons) x R(res...

IBHRE Exam Questions and Answers 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 acceler...

IBHRE Test Questions and Answers 100% Solved Class I Drugs Sodium Channel blockers (Phase 0) Class II Drugs Beta blockers (SA/AV Node) Class III Drugs Potassium Channel blockers (Phase 3) Class IV Drugs Calcium Channel Blockers (Phase 2) Class V Drugs Digitalis (SA + AV Nodes) What is the most posterior structure of the heart? LA On an EKG, what structure is always negative? AVN Lead I: + aVF: + normal axis deviation Lead I: + aVF: - left axis deviation Lead I: - aVF: + right axis de...

IBHRE Test Questions and Answers 100% Solved Functional Refractory Period (FRP) the coupling interval which first results in a measurable degree of delay in impulse conduction effective refractory period the longest coupling interval to be associated with block resting (transmembrane) potential the voltage difference between the inside and outside of the cell fiber (negative inside cell) action potential the cellular characteristics of depolarization and repolarization. Consists of 5 ...

IBHRE Exam with Complete Solutions ICD Battery Types 1. Li/SVO: Lithium/Silver-Vanadium Oxide (1st gen.) 2. Lithium/Manganese Dioxide (2 manufacturers) 3. Lithium/Silver-Vanadium Oxide-Carbon Monofluoride (2 manufacturers -MDT) Capacitor Types -Aluminum Electrolytic -Tantalum 5 Phases of Cardiac Action Potential *Phase 0: influx of Na+ (depolarization - conduction velocity) *Phase 1: transient efflux of K+ (how quickly the cell can be depolarized again) *Phase 2: influx of Ca 2+ & Na+ ...

IBHRE practice exam #1 Questions with solutions 100% solved Wenkebach window Max tracing interval(in ms) - TARP(in ms) 2:1 Block Point 60,000/TARP Basic unit of capacitance Farad Function of pacemaker circuitry that allows the pacemaker output pulse to be dissipated quickly maximizing both output and sensing capabilities Charge dump Av sequentially paced pts with frequent ventricular ectopy should have what programmed to decrease chance of competition Short blanking period