What is the definition or description of: pericardiocentesis?

Heart procedure : Pericardiocentesis is a procedure that is performed to sample or drain fluid that has collected around the heart. It involves inserting a needle under the breastbone into the sac around the heart. It is usually performed with the assistance of ultrasound.

Remove fluid: Pericardiocentesis refers to placing a needle into the sac surrounding the heart (pericardium) and withdrawing fluid which can be for diagnosis or treatment. This is often done using ultrasound to help guide the needle.

Draining fluid: A pericardiocentesis is a procedure where fluid in the pericardium (sack around the heart) is drained using a needle, usually with ultrasound guidance.