Removal of catheter placed during the procedure in first or second post-surgical days.

After removal of the bladder catheter, on postoperative day I or II, the appearance of urinary urge will be assessed and, in case of spontaneous urination, the quantity of urine will be measured. In the event that after the waiting time of 6 hours an adequate urination stimulus does not arise, we will proceed with an ultrasound evaluation of bladder stagnation (RV) and the application of the department protocol, as follows:

• if the sum of diuresis and RV is between 500 and 1000 cc, extemporaneous catheterization and re-evaluation after 4 hours are indicated
• if the sum of diuresis and RV is > 1000cc, positioning of a bladder catheter and maintenance of the same for 5-7 days with subsequent evaluation is indicated.

Before removing the catheter, a chemical-physical examination will be carried out; if this is positive, urine culture will be carried out. The diagnosis of urinary tract infection will be made with leukocyturia greater than 25 cells per field, positivity for urinary nitrite, presence of at least 20 bacteria per field, bacteriuria and/or more than 100,000 colony forming units associated with at least one of the following signs (fever, dysuria, increased urinary frequency, suprapubic pain, burning on urination or worsening of urinary incontinence). Patients with a positive culture and/or who show symptoms attributable to urinary tract infection will be subjected to antibiotic therapy.