Drugs Flashcards
Epinephrine affinity
B1 and B2 then alpha at higher doses
Epinephrine indications
anaphylactic shock
complete heart block
cardiac arrest
Prolonged Anestetic actions
Adverse affects of Epinephrine
HTN, cerebral hemmorage and arrhythmias
Low dose effect (graph of epi)
up: pulse (B1)
Down: peripheral resistance (B2)
Increase in sys (B1)
Decrease in diastolic (B2)
Epinephrine Reversal
Higher dose epi= pressor
Given w/ alpha antagonist =decrease in pressure. Due to unopposed beta activity.
NE affinity
Alpha 1 and alpha 2 > B1
NE lacks affinity for
B2
NE acts how
Potent vasoconstrictor.
Increases CO.
HR may decrease slightly due to baroreceptor reflex.
NE indications
Hypotension , shock
AEs of NE
High risk of HTN
NE trace
Lowers heart rate: (baroreceptors)
Up: Peripheral resistance (unopposed alpha 1 effect)
Overall increase in MAP
Dopamine affinity
Low (D1): vasodilation in renal , mesenteric, and coronary beds.
Moderate (B1):
High (Alpha)
Dopamine indications
shock and heart failure
Dopamine AEs
Similar to NE… .HTN
Phenylephrine affinity
alpha 1 –vasoconstriction
Phenylephrine indications
hypotension/shock
nasal congestion
mydriasis