IBHRE Drugs UPDATED ACTUAL Exam
Questions and CORRECT Answers
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
what is the half life of adenosine? - CORRECT ANSWER - less than 10 seconds
will adenosine have an effect on VT? - CORRECT ANSWER - no
What drug treats symptomatic bradycardia, junctional escape mechanism and second or third
degree AV block? - CORRECT ANSWER - atropine
what is the action/effect of atropine? (2) - CORRECT ANSWER - blocked
parasympathetic response of SA node, improves HR and AV conduction
when does atropine require significant caution? - CORRECT ANSWER - in the setting of
acute MI
What drug speeds up SA nodal and atrial conduction to study tachycardias? - CORRECT
ANSWER - isuprel
isuprel is a pure ______ adrenergic stimulator that (increases/decreases) HR - CORRECT
ANSWER - beta, increases
what are side effects of isuprel - CORRECT ANSWER - insomnia, nervousness, anxiety,
tension-- high doses may be life threatening
, what drug cardioverts atrial atrial fib/flutter (3) and reduces defibrillation threshold of chronic
AF - CORRECT ANSWER - corvert
ibutilide
fumarate
what is the mechanism of corvert - CORRECT ANSWER - prolongs action potential
during ERP in atrial and ventricles without affecting conduction
what may corvert cause - CORRECT ANSWER - torsades de pointes
what drug produces systemic vasodilation - CORRECT ANSWER - nitroglycerin
what is the mechanism of nitro? - CORRECT ANSWER - decreases pulmonary vascular
resistance, muscle relaxant
what will nitro do at high doses? - CORRECT ANSWER - produce systemic arterial
dilation
What drug is used to treat cardiac arrest? - CORRECT ANSWER - epinephrine
what is the mechanism of epi? - CORRECT ANSWER - alpha and beta adrenergic
receptor
what drug is used to relieve patient anxiety/sedation? (2) - CORRECT ANSWER -
benzodiazepine (valium and versed)
what are the actions/effects of valium and versed? - CORRECT ANSWER - bind to
plasma proteins. Minor CNS depression and muscle relaxant
Questions and CORRECT Answers
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
what is the half life of adenosine? - CORRECT ANSWER - less than 10 seconds
will adenosine have an effect on VT? - CORRECT ANSWER - no
What drug treats symptomatic bradycardia, junctional escape mechanism and second or third
degree AV block? - CORRECT ANSWER - atropine
what is the action/effect of atropine? (2) - CORRECT ANSWER - blocked
parasympathetic response of SA node, improves HR and AV conduction
when does atropine require significant caution? - CORRECT ANSWER - in the setting of
acute MI
What drug speeds up SA nodal and atrial conduction to study tachycardias? - CORRECT
ANSWER - isuprel
isuprel is a pure ______ adrenergic stimulator that (increases/decreases) HR - CORRECT
ANSWER - beta, increases
what are side effects of isuprel - CORRECT ANSWER - insomnia, nervousness, anxiety,
tension-- high doses may be life threatening
, what drug cardioverts atrial atrial fib/flutter (3) and reduces defibrillation threshold of chronic
AF - CORRECT ANSWER - corvert
ibutilide
fumarate
what is the mechanism of corvert - CORRECT ANSWER - prolongs action potential
during ERP in atrial and ventricles without affecting conduction
what may corvert cause - CORRECT ANSWER - torsades de pointes
what drug produces systemic vasodilation - CORRECT ANSWER - nitroglycerin
what is the mechanism of nitro? - CORRECT ANSWER - decreases pulmonary vascular
resistance, muscle relaxant
what will nitro do at high doses? - CORRECT ANSWER - produce systemic arterial
dilation
What drug is used to treat cardiac arrest? - CORRECT ANSWER - epinephrine
what is the mechanism of epi? - CORRECT ANSWER - alpha and beta adrenergic
receptor
what drug is used to relieve patient anxiety/sedation? (2) - CORRECT ANSWER -
benzodiazepine (valium and versed)
what are the actions/effects of valium and versed? - CORRECT ANSWER - bind to
plasma proteins. Minor CNS depression and muscle relaxant
