Final answer:
a. to check for residual urine. Catheterization is performed for various reasons, such as checking for residual urine, instilling medications into the bladder, relieving bladder distention from urinary retention, and relieving urinary suppression with overflow. However, it is not typically performed to check for residual urine.
Step-by-step explanation:
Catheterization is performed for various reasons, such as checking for residual urine, instilling medications into the bladder, relieving bladder distention from urinary retention, and relieving urinary suppression with overflow. However, it is not typically performed to check for residual urine. By inserting a catheter, healthcare workers can empty the bladder and measure the amount of urine left behind.