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Thoracentesis

Test Overview

Thoracentesis (say "thor-uh-sen-TEE-sis") is a procedure to remove fluid from the space between the lungs and the chest wall. This is called the pleural space. The procedure may also be called a "chest tap."

It is normal to have a small amount of fluid in the pleural space. But too much fluid can build up because of problems such as infection, heart failure, and lung cancer. The procedure may be done to help with shortness of breath and pain caused by the fluid buildup. Or you may have it done so the doctor can test the fluid to find the cause of the buildup.

Your doctor will put a long, thin needle or a thin plastic tube, called a catheter, between two of your ribs. The doctor will use the needle or catheter to take fluid out.

You may get medicine before the procedure. This helps with pain and helps you relax. The procedure will take about 15 minutes. You can go back to work or your normal activities as soon as you feel up to it.

Information about Thoracentesis

Adaptation Date: 03/02/2022

Adapted By: Alberta Health Services

Adaptation Reviewed By: Alberta Health Services

Adapted with permission from copyrighted materials from Ignite Healthwise, LLC (Healthwise). This information does not replace the advice of a doctor. Healthwise disclaims any warranty and is not responsible or liable for your use of this information. Your use of this information means that you agree to the Terms of Use. How this information was developed to help you make better health decisions.

Information about Thoracentesis

Adaptation Date: 03/02/2022

Adapted By: Alberta Health Services

Adaptation Reviewed By: Alberta Health Services