Parasympathomimetics · Pharmacology

Which therapeutic effect explains the use of bethanechol in postoperative urinary retention?

  1. Complete relaxation of the bladder wall muscles
  2. Increased detrusor muscle contraction
  3. Reduced kidney filtration
  4. Decreased urine production
Show answer and explanation

Correct answer: Increased detrusor muscle contraction

Bethanechol stimulates muscarinic receptors in the bladder detrusor muscle. This increases contraction of the bladder and helps promote urination in urinary retention.

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