This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Other topics and Adverse effects, Subject name: Anatomy
[{'content': 'Which of the following effects is unlikely to occur during treatment with imipramine? \nSelect and explain. \nA. Elevation of seizure threshold, B. Mydriasis, C. Sedation, D. Urinary retention', 'role': 'user'}, {'content': 'Answer: A \nExplanation: (Ref: KDT 6/e p444) Imipramine is a tricyclic antidepressant. It inhibits the reuptake of serotonin and nor-adrenaline. In addition, it possesses anticholinergic and a-blocking propeies are: Increased risk of seizures due to lowering of Seizure threshold is an adverse effect of this drug.', 'role': 'assistant'}]