Final answer:
Air embolism could be the possible cause of death when a central line is removed.
Step-by-step explanation:
The possible cause of death in this scenario could be 1) Air embolism. Air embolism occurs when air bubbles enter the bloodstream, which can be fatal if they block blood flow to vital organs. When a central line is removed, it is important to ensure that the line is properly flushed and all air bubbles are removed to prevent this complication.