ANS drugs Flashcards
adrenergic drug:
MOA: inhibit storage in vesicles
inhibit NE and Dopamine response
Reserpine
cant be stored kay naa ngpa Reserve
MOA: inhibit release of catecholamines (2) examples
Guanethedine ,Brethylium
when u use adrenaline.. ma Gua imo Breth
MOA: stimulate sympathetic response (4) examples
amphetamine, metamphetamine, ephedrine, tyramine
[Amp! Phred Met Tyra]
Class?
MOA: Produce sympathetic response by causing an increase in the concentration of NE in the synaptic clef
Indirect-acting sympathomimetics
class?
MOA: stimulate directly adrenergic receptors
Direct acting sympathomimetics
Catecholamines is degraded by?
COMT
(Catechol-O-methyl transferase, found in the GI)
enumerate (2) common metabolite of catecholamines
metanephrine
Vanillyl mandelic acid (VMA)
Vanillyl mandelic acid (VMA) is seen in what condition?
Pheochromocytoma
enumerate (3) natural catecholamines
Epinephrine
Norepinephrine
Dopamine
[END]
decreased catecholamine concentration stimulates (?) receptors?
Beta receptors
increased catecholamine concentration stimulates (?) receptors?
alpha receptors
Endogenous source of epinephrine, what site?
adrenal medulla
Indication: ACLS, anaphylaxis, shock
epinephrine
Pivalic ester derivative of epinephrine given as opthalmic drops for glaucoma
Dipivefrin
catecholamine affinity with receptor a1 and b1 ( no effect on a2 b2)
norepinephrine
first line mgt of septic shock
norepinephrine
receptor for vasodilation of renal and splanchnic blood vessels
D1
[D shape like a kidney]
receptor for inotropic agent for shock
B1
receptor for vasoconstriction
a1
selective b1 agonist drug (1)
dobutamine
selective b2 agonist drug (rapid and short acting)
fenoterol albuterol salbutamol terbultaline
[FAST]
selective a1 agonist drug
phenylephrine, prophylhexedine, oxymetazoline
-ephrine, -edine, -zoline
selective a2 agonist drug
useful in HPN mgt
Clonidine, Methyldopa, Guanfancine, Guanbenz
[GMC]
Receptor: Suppression of release of norepinephrine (noradrenaline) by negative feedback
A2