Post Operative Urinary Retention (POUR) Following Thoracic Oncological Surgery

Tamsulosin 0.4 mg one time daily after a meal for seven days prior to surgery. Post-surgery, an ultrasound of the bladder will be completed approximately six hours after surgery to assess the bladder. If the bladder ultrasound shows more than 400 cc of urine in the bladder, or if the study subject passes urine on his own and there is more than 100cc or less than 400 cc of urine left in the bladder, he will be encouraged to try to pass urine. Study subject will be monitored for two additional hours. If a study subject is unable to pass urine at this time or the bladder has 400 cc or more of urine left in it, he will have an intermittent catheter (in and out) to drain urine. If the bladder has greater than 500 cc (which is approximately 16 and two-thirds ounces) per catheterization for more than 24 hours, and the study subject cannot pass urine, an indwelling catheter may be considered.