I26.04

Clinical Causes: Trauma or fractures of long bones such as the femur or pelvis Orthopedic surgery involving bone manipulation Severe burns or crush injuries Lipomatous tumors releasing fat particles into the bloodstream Medical procedures that disrupt bone marrow or fat tissues

Key Symptoms: Sudden onset of respiratory distress Shortness of breath and rapid breathing Chest pain that may worsen with deep breaths Cough, sometimes accompanied by hemoptysis (coughing up blood) Rapid heart rate (tachycardia) Altered mental status or confusion In severe cases, signs of right-sided heart failure such as swelling in the legs or neck veins Skin petechiae, especially around the chest, axillae, or conjunctiva, due to small fat particles blocking skin capillaries

Diagnosis Path: History of recent trauma or orthopedic procedure Physical examination revealing respiratory and cardiovascular signs Chest X-ray to identify characteristic lung changes Blood tests including arterial blood gases (ABGs) to assess oxygen levels Laboratory markers indicating inflammation or fat globules Imaging studies such as computed tomography (CT) or magnetic resonance imaging (MRI) to detect emboli Right heart catheterization may be used in some cases to evaluate pulmonary pressures

Treatment Protocols: Oxygen therapy to improve oxygenation Mechanical ventilation in severe respiratory failure Hemodynamic support with intravenous fluids and medications to maintain blood pressure Use of vasopressors if necessary to support heart function Treating underlying cause, such as stabilizing fractures or controlling bleeding Monitoring in an intensive care setting for severe cases In some instances, corticosteroids may be considered to reduce inflammation, though their use is debated Surgical or procedural interventions are generally reserved for specific situations, such as removing large fat globules if accessible