Ibhre questions - Study guides, Class notes & Summaries

Ohm's law equation - ANS V=IR EKG monitored patient should be __________, monitor chassis should be ___________ (nonconductive). Why - ANS ungrounded, grounded. Grounded patients would be able to conduct leakage currents. we don't want this lb to kg - ANS 2.2 lb = 1 kg F to C - ANS C=5/9(F-32) C to F - ANS F=9/5C+32 3 things that change automaticity of automatic cells - ANS 1. slope of phase 4 2. Change of threshold potential 3. Change of resting membrane pot...

IBHRE QUESTIONS AND ANSWERS 100% SOLVED VSP (timing, device type, what is it used for) 110 ms, single chamber, crosstalk and PVCs RBBB paced morphology during implant indicates? Possible RV perforation or lead went through a PFO Fusion vs. Pseudofusion vs. Pseudo pseudo fusion Fusion - stimulus early in complex Pseudofusion - inside the complex, does not capture because it occurs in a refractory period Pseudopseudofusion - pacing artifact is from a different chamber Idioventricular rhy...

IBHRE Questions and Answers 100% Solved Which of the following is described by Ohm's Law? V=IR voltage=current x resistance * Electrophysiologic recorder filters that are sufficient to process intracardiac electrograms must allow passage of frequencies up to: A. 5 Hz B. 50 Hz C. 500 Hz D. 500 kHz E. 50 MHz c. 500 Hz Electrophysiologic recorder filters should have the ability to process 30-40Hz and 400-500Hz * Torsades de Pointes is LEAST likely to occur after administration of whi...

IBHRE CEPS - Trouble Questions -Answered 100- Correct 2024

In general when selecting an IV, what target should you start with? a. largest vein possible b. Vein closest to the heart c. Most medial site d. Most peripheral (distal) site - d. Most peripheral (distal) site allows for cannulation of a more proximal site in the event of failure What is the function of Penicillin/Amoxicillin a. Disinfect b. Bacteriostatic c. Bactericidal d. Antiseptic e. Sterilize - c. Bactericidal What is the most complete, practical, efficient, and inexpensive met...

Random IBHRE Questions and Answers 100% Solved Triggered is associated with digitalis toxicity or elevated interventricular Ca++ levels delayed After depolarization is a mechanism that causes triggered arrhythmias DAD - delayed after depolarization is associated with MI, reperfusion injury, RVOT VT and some A arrhythmias EAD - early after depol is associated with polymorphic VT and VT torsades A signal is what phase in AP phase 0 H signal is what phase in AP between AVN depol & purkinj...

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 answersConstant 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 answersAnterior MI, bundle branch block Acute BBB post MI should be seen as a warning...

EP IBHRE QUESTIONS AND ANSWERS 100% SOLVED A blockage to which coronary artery can cause AV Block? Posterior Descending Artery most commonly supplied by RCA but could be supplied by the circumflex What type of tissue has the longest refractory period? Ventricular Is the femoral vein medial or lateral to the femoral artery? The femoral vein is medial to the femoral artery At what value is something statistically significant? P<0.05 What are the normal cardiac pressures? "RA: 2-8 mm...

CCDS IBHRE Questions with solutions 100% solved 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(resistance to current flo...

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