(Pericardial Tap; Cardiac Needle Aspiration)
by Mary Calvagna, MS
The pericardial sac surrounds the heart. It normally contains a small amount of fluid. Pericardiocentesis is the withdrawal of fluid from this sac with a needle.
Reasons for Procedure TOP
Pericardiocentesis may be used as a treatment. If too much fluid builds up in the sac, this can put extra pressure on the heart. This is known as cardiac tamponade. It is a life-threatening condition. Withdrawing some of the fluid will help to relieve the pressure on the heart.
Pericardiocentesis may also be used to diagnose the cause of fluid buildup. Fluid buildup is known as pericardial effusion. The buildup can be caused by an infection, cancer, trauma, autoimmune disorders, or drug use. It may also indicate the presence of rheumatoid arthritis, heart attack, or kidney failure.
Possible Complications TOP
Problems from the procedure are rare, but all procedures have some risk. Your doctor will review potential problems, like:
Before your procedure, talk to your doctor about ways to manage factors that may increase your risk of complications such as:
What to Expect TOP
Prior to Procedure
Pericardiocentesis may be a scheduled or emergency procedure. This can have an impact on which tests are done prior to the procedure. The following tests may be conducted prior to your procedure:
Leading up to your procedure:
Light sedation will be given to help you relax. You will be awake during the procedure. A local anesthesia will be injected at the insertion site. It will numb an area on your chest.
Description of Procedure TOP
Your heart will be monitored. The needle will be inserted into the chest. It will be slowly moved toward the heart. Ultrasound and possibly fluoroscopy will be used to help guide the needle to the correct location. The needle will be passed into the pericardial sac, but no further.
Once in the pericardial sac, the fluid will be removed. The needle may be used, or a catheter tube may be inserted over the needle. After some fluid is collected or enough of the fluid has drained out, the needle or catheter will be removed. Pressure will be applied to the injection site for several minutes. This is done to stop the bleeding.
In some cases, your doctor may leave the catheter in place. This will allow draining to continue over several hours or days.
Immediately After Procedure TOP
You will have a chest x-ray to make sure your lung has not been punctured. You will be closely monitored for several hours after the procedure. Your pulse, blood pressure, and breathing will be checked regularly.
The fluid removed from the pericardial sac is sent to a lab to be analyzed under a microscope.
How Long Will It Take? TOP
About 20-60 minutes
How Much Will It Hurt? TOP
You may feel pain when the needle is inserted.
Average Hospital Stay TOP
Hospital stay can vary from one day to several days. If the catheter remains in place to continue draining fluid, you may need to stay in the hospital several days.
Postoperative Care TOP
During your stay, the hospital staff will take steps to reduce your chance of infection such as:
There are also steps you can take to reduce your chances of infection such as:
Call Your Doctor TOP
It is important to monitor your recovery. Alert your doctor to any problems. If any of the following occur, call your doctor:
If you think you have an emergency, call for emergency medical services right away.
American Heart Association
National Heart, Lung, and Blood Institute
Heart and Stroke Foundation of Canada
Cardiac tamponade. Merck Manual Professional Version website. Available at:
...(Click grey area to select URL)
Updated January 2017. Accessed November 30, 2017.
Explore pericarditis. National Heart Lung and Blood Institute website. Available at: https://www.nhlbi.nih.gov/health/health-topics/topics/peri. Updated September 26, 2012. Accessed November 30, 2017.
Pericardial effusion and tamponade. EBSCO DynaMed Plus website. Available at: http://www.dynamed.... Updated June 15, 2017. Accessed November 30, 2017.
Pericardiocentesis. Cleveland Clinic website. Available at: https://my.clevelandclinic.org/health/articles/pericarditis. Accessed November 30, 2017.
6/2/2011 DynaMed Plus Systematic Literature Surveillance http://www.dynamed...: Mills E, Eyawo O, Lockhart I, Kelly S, Wu P, Ebbert JO. Smoking cessation reduces postoperative complications: a systematic review and meta-analysis. Am J Med. 2011;124(2):144-154.
Last reviewed November 2017 by EBSCO Medical Review Board Michael J. Fucci, DO, FACC
Last Updated: 12/20/2014
EBSCO Information Services is fully accredited by URAC. URAC is an independent, nonprofit health care accrediting organization dedicated to promoting health care quality through accreditation, certification and commendation.
This content is reviewed regularly and is updated when new and relevant evidence is made available. This information is neither intended nor implied to be a substitute for professional medical advice. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with questions regarding a medical condition.
To send comments or feedback to our Editorial Team regarding the content please email us at firstname.lastname@example.org. Our Health Library Support team will respond to your email request within 2 business days.