Final answer:
Pericardiocentesis commonly uses a long bevel, large bore needle such as an 18-gauge intravenous cannula or Tuohy needle to remove fluid from the pericardial space.
Step-by-step explanation:
The needle size used for pericardiocentesis typically involves a long bevel and is often of a large bore. This procedure involves the insertion of a needle into the pericardial space to remove excess fluid from around the heart. The commonly used needle for this procedure is called an intravenous cannula or Tuohy needle, which is usually around 18-gauge, meaning it is a large bore needle that allows for rapid fluid removal. The long bevel is preferred to reduce the risk of injury to the heart.
For pericardiocentesis, a long-beveled needle is typically used. The choice of needle size depends on the purpose of the procedure. A large bore needle, such as a 14-16 gauge needle, may be used for the initial drainage of a large pericardial effusion. After initial drainage, a smaller bore needle, such as an 18-22 gauge needle, may be used to prevent complications.