Gynaecology & Obstetrics Estrogen therapy for urinary incontinence acts by all mechanisms except A Increase collagen deposition thereby increasing urethral coaptation. B Increase Ξ± - adrenergic receptor sensitivity. C Decreases vascularity of periurethral capillary plexus. D Increase urethral blood flow and urethral closing pressure. π‘ Explanation Estrogen therapy for urinary incontinence acts by all mechanisms except β Correct Answer: C. Decreases vascularity of periurethral capillary plexus.