IBHRE Latest Update 2024-2025 Actual Exam Questions and 100% Verified Correct Answers Guaranteed A+
1 French size = - CORRECT ANSWER: .3 mm
40% of athletic field deaths? - CORRECT ANSWER: HCM
AFFIRM - CORRECT ANSWER: rate control vs rhythm control and they are equivalent
Anode should be how much bigger than the cathode? - CORRECT ANSWER: 3xs (4-
20mm in pacing leads)
antibiotics typically given within 60 minutes of implant but VANcomycin is what? -
CORRECT ANSWER: within 2 hours
Basic Unit of Energy? - CORRECT ANSWER: Joule
Battery capacitance of a pacemaker is given in? - CORRECT ANSWER: Current
Bipolar configuration has: - CORRECT ANSWER: higher impedance and higher threshold
Brugada - CORRECT ANSWER: Prominent in SE Asia and considered a major cause
of SCD in young.Linked to mutation of the SCN5A gene ECG has a distinct ST elevation in the right precordial leads (V1-V3)
chronaxie - CORRECT ANSWER: twice the rheobase voltage
Class I infection? **Endocarditis** - CORRECT ANSWER: remove device, 6-8 weeks of antibiotics, epicardial device placement
Class IA infection? - CORRECT ANSWER: infected cardiac tissue
Class IB infection - CORRECT ANSWER: infected vegetation
Class IC infection - CORRECT ANSWER: infected foreign Body
Class II infection - CORRECT ANSWER: septecemia without endocarditis
Class II-IV infection? - CORRECT ANSWER: remove device, 36 hours of antibiotics, endocardial device placement
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Class III infection - CORRECT ANSWER: Subcutaneous tissue infection
Class IV infection - CORRECT ANSWER: infected pocket
Drug interactions with amiodarone? - CORRECT ANSWER: digoxin should be reduced
by 50% Warfarin should be reduced by 25% large amounts of grapefruit juice can also interfere
electrolyte abnormalities that increase threshold - CORRECT ANSWER: acidosis
alkalosis hyperkalemia hypocalcemia hyperglycemia hypercarbia hypoxemia
ENERGY EQUATION (uJ) - CORRECT ANSWER: V * I* PW
estimated battery life? Time= - CORRECT ANSWER: Time= Q (battery capacity in Ah) / I ( current drain in amperes)
Excitable Gap - CORRECT ANSWER: area of tissue in front of fibrillating wave that could trigger a wave front block and terminate the tachycardia
Factors that can Decrease Threshold - CORRECT ANSWER: exercise
catecholamines hypocapnia sympathetic agents- epi, iso hyperoxia
Fluoroquinolone antibiotic is known for what cardiac effect? - CORRECT ANSWER:
prolonging the QT
Frequency - CORRECT ANSWER: # of times a signal fluctuates in 1 sec expressed in hertz
frequent VT, fibro-fatty V myocardial replacement, QRS >110,epsilon waves in V1-V3,
and accounts for 10% of unexplained deaths in young? - CORRECT ANSWER: RV
Dysplasia
Heart Rate turbulence - CORRECT ANSWER: looks at 10 to 20 beats following a PVC.absence of it is the best non invasive prediction of cardiac mortality following a MI
Hypercalcemia can result in? - CORRECT ANSWER: Short QT
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