<prompt> Which of the following effects is unlikely to occur during treatment with imipramine?Elevation of seizure thresholdMydriasisSedationUrinary retention  <response>: Ref: KDT 6e 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. 