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Delayed systemic air embolism in a child with severe blunt chest trauma treated with high-frequency oscillatory
Jörg Brederlau1, Ralf M Muellenbach, Christian Wunder
1Department of Intensive Care Medicine, HELIOS Klinikum Berlin-Buch, Schwanebecker Chaussee 50, 13125, Berlin, Germany. joerg.brederlau@helios-kliniken.de
Insights
Blunt chest trauma can cause fatal arterial air embolism, even hours after ventilation begins. This case highlights a rare, late presentation of this severe pediatric injury.
Area of Science:
- Pediatric Trauma Surgery
- Critical Care Medicine
- Pulmonary Embolism
Background:
- Blunt chest trauma is a leading cause of pediatric mortality.
- Hemoptysis following chest trauma indicates severe injury, risking exsanguination or arterial air embolism.
- Cardiovascular collapse often follows intubation and positive pressure ventilation.
Observation:
- A 13-year-old boy sustained blunt chest trauma after being hit by a car.
- An alveolar to pulmonary venous fistula developed during lung protective ventilation, including high-frequency oscillatory ventilation.
- Cerebral and coronary artery involvement led to irreversible damage and fatal collapse.
Findings:
- Arterial air embolism presented atypically late, one hour after initiating positive pressure ventilation.
- Necropsy revealed severe right lower lobe pulmonary damage involving pulmonary vessels.
- Rapid diagnosis of the fistula did not prevent fatal outcomes.
Implications:
- Blunt chest trauma with hemoptysis poses significant diagnostic and therapeutic challenges in children.
- Delayed presentation of arterial air embolism requires heightened clinical suspicion.
- This case underscores the critical need for advanced monitoring and rapid intervention in pediatric trauma patients with chest injuries.
Purpose:
Trauma is the leading cause of death in children over one year of age. Even with optimal field care, blunt chest trauma with hemoptysis is a potentially fatal injury due to exsanguination or arterial air embolism. Most often, cardiovascular collapse that is unresponsive to therapy develops shortly after endotracheal intubation and initiation of positive pressure ventilation. We present a case of arterial air embolism after blunt chest trauma that manifested atypically late, i.e., one hour after initiation of positive pressure ventilation.
Clinical Features:
A 13-yr-old Caucasian boy was admitted to the emergency room after he had been run over by a car. While lung protective ventilation, including high frequency oscillatory ventilation, was performed, an alveolar to pulmonary venous fistula developed. Although the complication was diagnosed quickly, involvement of the cerebral and coronary arteries resulted in irreversible cerebral damage and fatal hemodynamic collapse. Necropsy confirmed severe damage of the right pulmonary lower lobe with involvement of the pulmonary vessels.
Conclusion:
Patients with blunt chest trauma and hemoptysis present a diagnostic dilemma with limited therapeutic options.
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