What precautions should be taken to prevent venous air embolism during the removal of a central venous catheter?

To prevent venous air embolism during the removal of a central venous catheter, position the patient in a flat supine or Trendelenburg position, have the patient hold their breath or perform a Valsalva maneuver during removal, and keep the catheter clamped throughout the procedure.

These precautions help ensure that the intrathoracic pressure remains higher than atmospheric pressure, reducing the risk of air being drawn into the venous system through the catheter exit site. Additionally, it is important to measure the catheter length after removal to ensure that the entire catheter was extracted.