Fat embolism syndrome signs include which of the following?

• A. Petechiae
• B. Bradycardia
• C. Hypoglycemia
• D. Jaundice

Answer: (A)

Petechiae are a classic sign of fat embolism syndrome. After trauma, especially long-bone fractures, fat droplets from the marrow can enter the bloodstream and lodge in small vessels throughout the body. This microvascular occlusion, along with the inflammatory reaction it triggers, leads to a characteristic tiny pinpoint rash that often appears on the chest, neck, and other upper-body areas within about 24 to 72 hours. Because this visible rash directly reflects the fat embolization process, it stands out as the best indicator among the options.

Bradycardia isn’t typical; patients more commonly have tachycardia from hypoxemia and systemic inflammation. Hypoglycemia and jaundice aren’t characteristic features of fat embolism syndrome, so they don’t fit the usual clinical picture.