Muscarinic Antagonists Flashcards
Belladonna Alkaloids
Atropine
Scopolamine
QAC
Ipatropium
Tiotropium
Glycopyrrolate
Tertiary Amines
Atropine Scopolamine Homatropine Cyclopentolate Topicamide Beztropine Trihexylphenidyl Tolterodine
DOC motion sickness
Scopolamine
Decreases urinary hypermotility
Atropine
Bradycardia in low dose (pre M2)
Tachycardia in higher dose (atrial M2)
Atropine
CNS AE for muscarinic antagonists
Hallucinations Delirium Depression Restlessness Confusion
DOC OD cholinergic
Atropine (farmer, insecticide)
Eye effects of Atropine
Mydriasis
Cycloplegia
Unreactive to light
GI effects of Atropine
Antispasmodic
Decrease motility
Sympathetic effects of atropine
Salivary, sweat, lacrimal secretions blocked
Blocks short term memory
Scopolamine
Bronchodilation and which receptor
Ipratropium
Tiotropium
M3
Shorter duration so use over Atropine
Homatropine
Cyclopentolate
Tropicamide
Action of Benztropine and Trihexyphenidyl
Restore balance input after loss of DAergic neurons in Substantia Nigra