IRCT201206108588N7 IRCT 2012-08-07 Tehran University of Medical Sciences. Comparison of complications in Morbid obese patients undergone bariatric laparoscopic surgery with and without urinary catheterization Comparison of effect of urinary catheterization in morbid obese patients are undergone bariatric laparoscopic surgery versus patient without catheterization on urinary complication of surgery 2012-06-01 anticipated 80 Complete https://irct.ir/trial/9081 interventional Randomization: N/A, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment. N/A Condition 1: urinary Catheterization. Condition 2: urinary tract infection. Condition 3: urinary retention. Intervention 1: For intervention group, urinary catheterization during surgery isn’t done and if the surgery of these patients take more than two hours, after surgery, urinary bladder will be empty by temporary catheter. Intervention 2: in the control group, preoperative urinary catheterization is done and 24 hours after surgrey it will be removed.