After the pre-treatment ultrasound acupuncture will be performed according to the following: 1) The points Sanyinjiao (SP 6) and Zusanli (ST 36) on the right side will be punctured 1/5-2 cm deep and moderate stimulation will be applied. 2) The needles will be retained for 30 minutes after achieving Qi and will be manipulated once every 3-5 minutes. After 30 minutes of acupuncture treatment, the patient will have an opportunity to void. If the patient is successful in voiding a post-treatment ultrasound recording the residual urine volume will be performed. If the post-void residual (PVR) urine volume is less than 100 ml acupuncture treatment will be considered a success. If the patient is not successful at voiding during the hour after acupuncture treatment, a post-treatment ultrasound recording the residual urine volume will be performed. If the post-void residual (PVR) urine volume is greater than 100 ml, acupuncture treatment will be considered a failure and the patient will be catheterized.