Patient Data Exhibits Click to indicate if the listed characteristic is consistent with a fat embolism or blood clot embolism. Each column must have at least one response option selected.

• Chest pain: Blood clot embolism, especially pulmonary embolism, typically causes sudden chest pain due to obstruction of the pulmonary arteries. Fat embolism rarely causes chest pain as the primary symptom, though hypoxia may lead to discomfort. Chest pain is therefore more indicative of thrombotic embolism. • Petechiae: Petechiae on the neck, upper chest, and conjunctiva are hallmark signs of fat embolism. They result from occlusion of dermal capillaries by fat globules and platelet aggregation. Blood clot embolism does not usually cause petechiae. • Origin typically long bone fracture: Fat emboli commonly originate from fractures of long bones such as the femur, tibia, or pelvis. Trauma forces fat from the bone marrow into the bloodstream, creating emboli. Blood clot emboli generally do not arise from bone fractures. • Altered mental status: Fat embolism can impair cerebral oxygenation, leading to confusion, lethargy, or agitation. This neurological involvement is a distinguishing feature of fat embolism. Blood clot embolism rarely affects mental status unless there is severe hypoxia. • Dyspnea: Dyspnea occurs in both fat and blood clot embolism due to impaired oxygen exchange in the lungs. In fat embolism, hypoxia may develop gradually, while blood clot embolism often causes sudden shortness of breath. Both conditions require prompt respiratory support. • Origin typically deep vein thrombosis: Blood clot emboli usually originate from deep veins in the legs or pelvis and travel to the lungs. Fat emboli are not associated with venous thrombi. Identifying the source helps differentiate between the two embolism types. • Tachycardia: Tachycardia is a compensatory response to hypoxia or stress in both fat and blood clot embolism. It helps maintain oxygen delivery to vital organs. While nonspecific, its presence supports the need for urgent intervention in either condition.