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ANS DRUGS I - Coggle Diagram
ANS DRUGS I
Nonselective agonists
Epinephrine
acts on b1, b2, a1, a2 (dose dependent order)
Heart
increases CO, HR, MAP, and PP
BP = inc systolic, dec diastolic
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constricts arterioles in skin, mucuous membranes, and viscera
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Respiratory = bronchodilation (B2 action), dec. histamine, bronchial decongestion
Eye - decreases red eye, aqueous formation
Hyperglycemia = increases glycogenolysis in liver, increase glucagon release, dec. insulin release
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Adverse effects - CNS, arryhthmias, angina, pulmonary edema, cerebral hemorrhage, caution in diabetics
Norepinephrine
equal a1 = a2 = b1, NO B2 or B3 action
Heart
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vasoconstriction
induces baroreceptor reflex, counteracts local actions on heart
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NO fx on cardiac output, dec HR, INC MAP, Inc PP
Dopamine
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Increases GI and renal bloodflow, stims cardiac contractility (b1), raises TPR (a1)
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Isoproterenol
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Inc HR, CO, contractility
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Selective B1 agonists
Dobutamine
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Used in acute heart failure, cardiogenic shock
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Selective B3 agonists
Mirabegron
relaxes detrusor, inc bladder capacity
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