Answer:
A tube inserted through the skin into a blood vessel or cavity to draw out body fluid or infuse fluid. In peritoneal dialysis (see dialysis), a catheter is used to infuse dialysis solution into the abdominal cavity and drain it out again.
| Previous Question | Next Question |
| What is electrolytes (ee-LEK-troh-lites)? | What is lupus (LOO-pus) nephritis (nef-RY-tis)? |