Angiography > Exams & Procedures > Paracentesis (Abdominal Tap, plus or minus drain insertion)
A paracentesis is performed when a person has ascites (an abnormal fluid build up in the abdomen). Ultrasound guidance is used. Local anaesthetic is given to numb the area. A fine needle is placed into the peritoneal fluid and drained. If your physician feels it is necessary, a small catheter can be left in place for continuous or intermittent drainage. The procedure takes about 1/2 hour. There is no special preparation. If you are on blood thinners, let us know so blood work can be obtained prior to the procedure.