ANSWERS | VERIFIED AND WELL DETAILED ANSWERS | LATEST
EXAM UPDATE
Nitroprusside purpose - CORRECT ANSWER - decreases preload and
afterload by vasodilation (mainly afterload)
Dobutamine mechanism of action - CORRECT ANSWER - contractility
Dopamine at a low-end dose "renal dose" - CORRECT ANSWER - 0.5-
4mcg/kg/min
increases renal and mesentric perfusion
Dopamine at a mid-range dose - CORRECT ANSWER - 4-10mcg/kg/min
increases contractility and heart rate
Dopamine at a high-range dose - CORRECT ANSWER - greater than
10mcg/kg/min
vasoconstriction and increases BP
Dopamine and Levophed infiltration - CORRECT ANSWER - leads to tissue
necrosis
Dopamine antidote - CORRECT ANSWER - regitine (phentolamine)
TpA monitor for - CORRECT ANSWER - bleeding-hemorrhagic CVA
,diltiazem (cardizem) works by? - CORRECT ANSWER - (calcium channel
blocker) slows ventricular rate by slowing conduction through the SA and AV
node
Diltazem (cardizem) biggest effect on which hemodynamic - CORRECT
ANSWER - hypotension
diltazem is used for patients with - CORRECT ANSWER - a-fib or a-flutter
amiodarone (Cordarone) is a - CORRECT ANSWER - antiarrythmic
prolongs the cardiac duration
You MUST use a __________ when using amiodarone infusion - CORRECT
ANSWER - 0.22 micron filter
Watch out for ____________ in patients on a amiodarone infusion -
CORRECT ANSWER - hypotension, prolongation of QT interval and
bradycardia
amiodarone is used for patients with - CORRECT ANSWER - a-fib, a-flutter
and VT
how much amiodarone is given to a stable VT with a pulse and a unstable
pulseless VT/VF? - CORRECT ANSWER - 150mg over 10min for VT with
pulse
300mg push; repeat x1 at 150mg
Epinephrine has what effect on the body? - CORRECT ANSWER - increases
HR, BP, and contractility
, what is the first line drug for pulseless arrest? - CORRECT ANSWER -
Epinephrine
What rhythms are considered fatal? - CORRECT ANSWER - V-fib, Vtach
(pulseless), and asystole
Epinephrine is also given for? - CORRECT ANSWER - anaphylaxis and as a
vasopressor for hypotension
Heparin is used for? Antidote is? - CORRECT ANSWER - anticoagulant
Protamine Sulfate
What is the osmotic diuretic of choice to decrease intracranial pressure? -
CORRECT ANSWER - mannitol
How does mannitol work? - CORRECT ANSWER - pulls fluids into
intravascular space to be excreted by the kidneys to reduce intracranial pressure
what insulin is given IV?
What is the peak? - CORRECT ANSWER - Regular insulin can only be given
IV
2-4 hr peak time
Which insulin has a peak of 8-14 hrs? - CORRECT ANSWER - NPH
Atropine is ineffective in which heart rhythms types? - CORRECT ANSWER
- high degree AV blocks: 2nd degree type2 and 3rd degree
Atropine works by? - CORRECT ANSWER - increasing heart rate-increasing
conduction through SA node