What does constant urination refer to in cholinergic effects?

Constant urination in the context of cholinergic effects is best understood as polyuria, which refers to the production of an abnormally large volume of urine. Cholinergic agents stimulate the parasympathetic nervous system, which can lead to increased bladder activity and enhanced urine production, thus resulting in increased frequency and volume of urination. This is particularly evident in conditions where there is excessive stimulation of the cholinergic system, leading to a more active urinary tract.

Other terms, such as oliguria, refer to reduced urine output, which does not align with the concept of constant urination. Retention implies difficulty or the inability to urinate, and nocturia refers to the need to awaken at night to urinate. None of these terms accurately capture the phenomenon associated with cholinergic stimulation, which is characterized by increased urination or polyuria. Therefore, polyuria is the most fitting term in this context.