Paracentesis (Abdominal Fluid Drainage)

Paracentesis is a procedure to remove fluid buildup (ascites) from the abdominal cavity. It helps relieve discomfort, improve breathing, and diagnose the cause of fluid accumulation, which may be due to liver disease, cancer, infection, or heart failure.

• Blood tests may be performed to check clotting status.
• Inform your doctor of all medications, especially blood thinners.
• Empty your bladder before the procedure.

You will lie on your back or slightly upright. After cleaning and numbing the skin, a thin needle or catheter is inserted into the abdomen to remove fluid. The procedure usually takes 20–45 minutes. Some patients experience pressure during fluid withdrawal.

• Bleeding or infection at the puncture site.
• Injury to abdominal organs (rare).
• Low blood pressure or electrolyte imbalance if large amounts of fluid are removed.

The fluid may be sent for lab testing to determine the cause of ascites. Your provider will explain the results and recommend further treatment, such as medication or repeat paracentesis.