Explanation: The rate of thrombosis is highest in neonates and teens. Even if a child has thrombophilia, the risk of thrombotic events is rare unless they are exposed to additional high-risk situations (admission to the pediatric intensive care unit, presence of a central venous catheter, major surgery with immobilization and bed rest, etc.). The 16-year-old postsurgery will be at some risk, but surgeons will have him be ambulatory as soon as possible after this type of surgery. Having cancer does increase the risk of thrombosis, but this child is in remission and in maintenance therapy. The primary risk factor for thrombosis in any child (central venous catheter) also has been removed from this patient. Therefore, the infant on total parenteral nutrition who by definition has a central venous catheter is at highest risk.
Question 13
