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Contributor score: 27
I totally skipped over the word "parentally" when taking this - ugh!
A/B - i think both of these are just thalamic nuclei; C -> STN; D -> substantia nigra; E -> hippocampus
B might be Internal capsule!?
Tiotropium would cause constipation bc it’s an anticholinergic. Don’t have any insight into why dextromethorphan is the right answer though, other than process of elimination and diphenhydramine wouldn’t treat his symptoms.
I thought it was dextromethorphan because it would bind NMDA receptors and have weaker opioid effect = less constipation? Idk though :/
I agree. I mainly went by way of elimination but even DXM made me think of opiod-induced constipation. Though, all the other answer choices had obvious anticholinergic effects. At least, that was my reasoning for picking dxm.