Figure 1. Chest computed tomography of the patient during admission revealed posterior atelectasis in both lungs, possibly due to increased airway secretions.

From: Cholinergic Crisis with Normal Serum Cholinesterase Levels due to Excessive Galantamine Ingestion: A Case Report

Figure 2. AChE predominates in the human brain, whereas BuChE is widely distributed in PNS and other organs such as the intestine, heart, and liver. Distigmine and rivastigmine inhibit AChE and BuChE, while galantamine and donepezil selectively inhibit AChE. Blood tests measure the activity of plasma BuChE. The rapid absorption and short half-time of galantamine align well with the rapid onset and resolution of symptoms in our patient.
AChE: acetylcholinesterase, APL: allosteric potentiating ligand, BuChE: butyrylcholinesterase, CNS: central nervous system, nAChRs: nicotinic acetylcholine receptors, PNS: peripheral nervous system, Tmax: time to peak drug concentration.

From: Cholinergic Crisis with Normal Serum Cholinesterase Levels due to Excessive Galantamine Ingestion: A Case Report

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