Muscarinic agonists Flashcards
Bethanecol
M Not hydrolyzed by AChE Treatment ileum (gut not moving) postop/neurogenic Urinary retention (GERD)
Methacholine
M>N
Hydrolyzed by AChE
Diagnosis of bronchial hyper reactivity
Pilocarpine
M
Not hydrolyzed by AChE
Enters CNS
Treatment of glaucoma (topical) and xerostemia (sjogren)
Direct acting muscarinic agonists:
Ach Bethanecol Methacoline Pilocarpine (Carbacol) - Not hydrolyzed, M & N - Glaucoma
Indirect acting cholinomimetics = Acetylcholinesterase inhibitors
Edrophonium Physostigmine Neostigmine Pyridostigmine Donepezil Tacrine Organo Phosphates
Edrophonium
Diagnosis myastenia
IV
Used to differentiate myasthenia from cholinergic crisis
Short acting
Physostigmine
Enters CNS Tertiary amine Oral Treatment of glaucoma Antidote in atropine overdose
Neostigmine, Pyridostigmine
Treatment ileus, urinary retention, myastenia (long lasting)
Reversal of non depolarizing NM blockers
IV
Cuartiary amines
Donepezil, Tacrine
CNS entry
Oral
Treatment of alzheimer disease
Organo phosphates
Irreversible inhibitors Treatment glaucoma (ecothiopate)
Agonistas sinteticas selectividad M1
Oxotremorina
Xanomelina
Contraindicaciones
Ulceras pepticas
IC
Asma
Epilepsia (pilocarpina)
Insecticides
Malathion, Parathion
paraxón
Nerve gas
Sarin
somán, tabín