Fat embolism syndrome following long bone fracture can present with which symptoms?

• A. Abdominal cramping
• B. Rash and joint swelling
• C. Sudden dyspnea and chest pain
• D. Severe headache

Answer: (C)

Fat embolism syndrome after a long-bone fracture mainly shows up with acute pulmonary signs because fat droplets travel to the lungs and obstruct small vessels, causing a sudden drop in oxygenation. This drives sudden dyspnea (shortness of breath) and chest pain as the heart and lungs struggle to exchange gases. You’ll often see rapid breathing and low oxygen levels, and some patients also develop mental status changes and a petechial rash, illustrating the broader triad of respiratory distress, neuro symptoms, and skin findings. Among the options, sudden dyspnea and chest pain best match the immediate pulmonary involvement that fat emboli cause after a fracture. Abdominal cramps aren’t typical, and severe headache or rash with joint swelling aren’t as characteristic for the acute pulmonary presentation.