IBHRE TESTS COMPILATION BUNDLE

Rheobase correct answer: the lowest point on a strength duration curve at an infinitely long pulse duration Chronaxie time correct answer: the pulse width at twice the rheobase value. It approximates the most efficient stimulation pulse duration Charge (formula) correct answer: Charge= I...

CRT: Non responders and hyperresponders correct answer: - 30% of CRT pts are "nonresponders" - In a subset of patients CRT therapy resulted in normalization of LV function. This finding is observed exclusively in the subgroup of patients with nonischemic DCM and suggests that LBBB may be the cau...

AV Node Reentry Tachycardia (AVNRT) correct answer: - accounts for ~60% of arrhythmias presenting as SVT or paroxysmal atrial tachycardia (PAT) - affects all age groups and genders equally - no correlation with heart disease - heart rate 150-250 bpm, palpitations, light-headedness, near-syncope,...

Name three causes of atrial standstill Myocardial Infarction Digitalis glycosides Hyperkalemia A 59 yo female with ischemic cardiomyopathy presents with palpitations, lightheadedness, insomnia and feels jittery. She has a CRT-D device. Takes Furosemide, potassium, lisinopril, carvedilol and a...

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 ...

Rheobase correct answer: the lowest point on a strength duration curve at an infinitely long pulse duration Chronaxie time correct answer: the pulse width at twice the rheobase value. It approximates the most efficient stimulation pulse duration Charge (formula) correct answer: Charge= I(cu...

Transteleph correct answer: Introduced in 1971 Monitor pacemakers for battery depletion Observes the free-running and magnet mode ECG strips to detect problems with sensing and capture. True or False There is sufficient data to support the use of remote monitoring to remotely manage ...

PVARP....after a _____ event, refractory for the ______ correct answer: ventricle, atrium what is most likely the cause of the under detection of atrial flutter? correct answer: p waves falling into PVAB Which two studies showed that RV pacing in patients could lead to more hospitalizations?...

What are the four pre-operative measures? correct answer: Informed Consent - The physician must explain the procedure to the patient including presence of risks. Documentation - patient's medical history indicates appropriate indication for device implantation. Lab Work - the patients most...

Drugs For HF correct answer: -Class III AntiArrhythmics (only Dofetilide/Amioderone proven safe) -Class II AntiArrhythmics (Beta Blockers): Atenolol/Carvedilol/Metoprolol -Vasodilators: Ace Inhibitors -Inotropics: Digoxin -Diuretics Aldosterone Antagonists (Stages C/D) Spironolactone Class ...

What classification of AAD is CLASS 1? correct answer: Sodium (Na+) Channel Blocker What classification of AAD is CLASS 2? correct answer: BETA BLOCKERS....Autonomic Inhibitors/Activators What classification of AAD is CLASS 3? correct answer: Potassium (K+) Channel Blocker What classific...

101: Which of the following limited sens diagnostic tools has not been shown to be a + predictor for increased risk of SCD? Signal alternans T-wave alternans Heart rate variability P-wave dispersion correct answer: P-wave disperson 102:What will significantly lower myocardial stim threshold...

Adenosine correct answer: Blocks outward K+ current Blocks AVN slows HR Effect is Brief 6mg 1st 12mg 2nd 12mg 3rd Valium correct answer: Benzodiazepine Amnesiac effect Affects respiratory Long acting, painful Reversal Romazicon (flumazenil) 2mg every minute Short acting Never...

Class 1 Anti-Arrhythmic Mechanism correct answer: Sodium (Na) Channel Blockers Class II Anti-Arrhythmic Mechanism correct answer: Beta Blockers Class III Anti-Arrhythmic Mechanism correct answer: Potassium (K) Channel Blockers Class IV Anti-Arrhythmic Mechanism correct answer: L-Type Ca...