IBHRE DRUGS LATEST UPDATE - ACTUAL EXAM

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IBHRE DRUGS LATEST UPDATE - ACTUAL EXAM

QUESTIONS WITH CORRECT VERIFIED ANSWERS/ AGRADE

What drug slows AV conduction to allow enough time to study APs/atrial signals? - Correct Answer - adenosine

what is the action and effect of adenosine? (2) - Correct Answer - fleeting depressive effect on SA and AV nodes Potent but bleeding vasodilatory effect

Drug that treats VT and VF and most commonly used class 1B drug by therapeutic plasma levels can be rapidly obtained - Correct Answer - lidocaine

what is the mechanism of lidocaine? - Correct Answer - slows depolarization and conduction velocity at fast heart rates during ischemia, hypokalemia, and acidosis

what are side effects of lidocaine? (5) - Correct Answer - - may suppress automaticity and EAD and LADs -confusion -dizziness -seizures -respiratory arrest

this drug is similar to lidocaine but is not suitable for emergent acute arrhythmia - Correct Answer - mexiletine

what are the side effects of mexiletine (2) - Correct Answer - - GI side effects -CNS side effects including tremors, blurred vision, uncoordinated movements 1 / 2

pg. 2 What drug would you pick for SVT, AT, multifocal atrial reentry, AV nodal reentry, macro reentrant VT - Correct Answer - verapamil

what is the mechanism of verapamil. (and diltiazem) - Correct Answer - blocks CA++ channels responsible for the depolarization of SA and AV nodes -specifically, it increases refractoriness and depresses automaticity and slows conduction in SA and AV nodes

what are the side effects of verapamil? - Correct Answer - negative inotropic properties, hypotension, constipation, dizziness, nausea, headache, edema, and bradyarrhythmia’s

what drug would you use to treat SVT, AT, AV nodal reentry and macro reentrant VT - Correct Answer - diltiazem (or verapamil)

why is moricizine controversial? - Correct Answer - decreases action potentials and refractory periods

what are the two main things BBs are used for. - Correct Answer - terminate or prevent AV nodal reentrant, SA nodal reentrant and macro reentrant tacos.slow ventricular response to AT (automatic or reentrant), AFL, and AF

• rhythm control and rate control

what are two BBs you need to know - Correct Answer - carvedilol metoprolol

how do BBs work? - Correct Answer - - reduce actions of catecholamines -pronounced effect of areas of rich adrenarche innervation - AKA SA and AV nodes

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