Some patients are not able to move, sit and stand; hence, they are not able to go to washroom for urinating. Certified nursing assistants provide special care to such patients with the help of a catheter. Catheter is a rubber / plastic tube that is placed into the bladder of the patient, in order to drain urine. One end of this tube is placed inside a bladder. It has a balloon-like structure and the other end is attached to the urine / drainage bag. It is the duty of a CNA to clean the drainage bag and catheter tube daily and make the patient feel comfortable.