Comparative Study

Detrusor activity is impaired during thoracic epidural analgesia after open renal surgery.

Anesthesiology. 2010 Jun 1;112(6):1345-9.
Randomized Controlled Trial

Patient-controlled epidural analgesia: the role of epidural fentanyl in peripartum urinary retention.

Int J Obstet Anesth. 2006 Jul 1;15(3):206-11.
Article

Effects of thoracic epidural analgesia on lower urinary tract function in women.

Neurourol. Urodyn. 2011 Jan 1;30(1):121-5.