The Dilated Pupil Conundrum

A patient on BiPAP develops acute anisocoria. Explore the differential for a unilateral dilated pupil and identify the common iatrogenic cause.

Ipatropium


What nebulized medication is most likely to have caused this patient’s anisocoria?

What is the most likely diagnosis?

Racemic epinephrine
Ipatropium
Ribavirin
Salbutamol
Theophylline

Anisocoria, Anticholinergic, BiPAP, Ipratropium, Mydriasis

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