IBHRE Latest Update -

IBHRE Latest Update - 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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