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.
These include: 1  Silicone coating: The silicone coating makes the catheter more secure and causes less allergies in the patient. 2  Catheter eyes: Catheter eyes are the holes in which the urine drains through. 3  Coude tip: These catheters have a rounded tip that helps it move through the urethra better.