A Patient Has Sustained a Fractured Femur in a Car

A patient has sustained a fractured femur in a car accident. The physician has stated concern about the possibility of a fat embolism. The patient's wife asks the nurse about the cause of a fat embolism. The nurse's most appropriate response would be

A) "Arterial blood flow is interrupted at the site of injury."
B) "Floating fat sometimes causes problems."
C) "The break in the bone forces molecules of fat into the bloodstream."
D) "We don't know the cause. We just know that it sometimes happens."