Thoracentesis

Learn about the Thoracentesis test.

What is Thoracentesis?

Thoracentesis is performed in cases of pleural effusion, or excess fluid in the pleural space around the lungs.

During the Thoracentesis procedure small needle is inserted into the pleural space in order to remove the excess fluid and help you breathe easier. This test can also determine the cause of the pleural effusion.

Why the Test is Performed

The procedure is performed to determine the cause of pleural effusion as well as to relieve the symptoms of pleural effusion by removing excess fluid.

How to Prepare for the Test

This is a quick procedure that can often be performed in your doctor’s office. There is no special preparation needed for thoracentesis.

What Happens During the Test

The procedure is performed in a doctor’s office or hospital and usually takes 10 to 15 minutes. Most patients sit on the edge of a chair or bed with their head and arms resting on a table. Your doctor may use ultrasound to help guide the needle. Your doctor will inject numbing medicine and insert a needle between your ribs into the pleural space, in order to remove the excess fluid. You may feel the need to cough or have chest pain.

What is Monitored During the Test

Your blood pressure and breathing will be monitored to ensure you do not have complications. The fluid will be sent to a lab to determine the cause of your pleural effusion and determine further treatment.

What Equipment is Used

A small needle, and possibly ultrasound.

Potential Risks of the Test

Some risks may include collapsed lung, pain, bleeding, bruising, or infection. Liver or spleen injuries are rare.

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