Graduate Teaching Assistant Salary. The average pay for a Graduate Teaching Assistant is $18,637 per year. Most people with this job move on to other positions after 20 years in this career. For the first five to ten years in this position, pay increases sharply, but any additional experience does not have a big effect on pay. $12,082 - $32,705.
Some patients experience urinary retention after surgery, which may make a catheter necessary even if the patient did not need one during the procedure. Patients may also experience urinary retention after the removal of a Foley catheter.
When the catheter is in the bladder, a small balloon is inflated to keep the catheter in place. The urine drains from the bladder into a bag that is usually attached to the thigh. Sometimes the catheter tube has a valve that lets you drain the urine into the toilet or other container. You may need this type of catheter if you have nerve damage or if you have problems with your bladder or urethra.