Kritikos O, Tsangaris H, Tsoutsos D A, Papadopoulos S, Karabinis A, Ioannovich J
Department of Plastic Surgery, Microsurgery and Burns Centre.
Ann Burns Fire Disasters. 2006 Sep 30;19(3):153-5.
Inhalation injury is one of the main causes of death in patients with severe burns. Administration of exogenous surfactant appears promising for the treatment of acute respiratory failure. We report our clinical experience with this approach. A 35 yr-old man was admitted to our burns unit after an industrial accident. He had sustained a 60% total body surface area full-thickness burn combined with severe inhalation injury. Fiberoptic bronchoscopy confirmed the diagnosis, demonstrating severe blisters and ulcers of the bronchial mucosa. Refractory hypoxaemia (PaO (2)/FiO (2)56 mm Hg, where PaO (2)is oxygen tension in arterial blood and FiO (2)is the fraction of inspired oxygen) was treated with optimal mechanical ventilatory support; additionally, an initial dose of natural bovine surfactant (Alveofact) of 50 mg/kg body weight was administered by intrabronchial instillation on day 3 postburn. A significant improvement in oxygenation was observed 12 h after administration (from 56 mm Hg initially to 194 mm Hg), followed by an improvement in dynamic compliance (from 26 ml/cm H (2)O initially to 41 ml/cm H (2)O) and inspiratory resistance (from 14 cm H (2)O/lps initially to 11 cm H (2)O/lps). The same dose of surfactant was repeated 48 h later to prevent potential deterioration, resulting in maintenance of gas exchange and lung mechanics at the above levels. No complication associated with the surfactant administration was observed. However, the patient died on day 9 post-burn owing to extrapulmonary causes. Our results demonstrate a significant improvement in gas exchange and lung mechanics in a burn patient with severe inhalation injury after repeated administration of exogenous surfactant. Further study is needed in order to elucidate the clinical impact of surfactant administration and the complications associated with its use in cases of inhalation injury.
吸入性损伤是重度烧伤患者死亡的主要原因之一。给予外源性表面活性剂似乎有望治疗急性呼吸衰竭。我们报告了我们采用这种方法的临床经验。一名35岁男性在一次工业事故后被收入我们的烧伤科。他全身60%体表面积为深度烧伤,并伴有重度吸入性损伤。纤维支气管镜检查确诊,显示支气管黏膜有严重水泡和溃疡。难治性低氧血症(动脉血氧分压/吸入氧分数为56 mmHg,其中动脉血氧分压是动脉血中的氧分压,吸入氧分数是吸入氧的比例)采用最佳机械通气支持治疗;此外,在烧伤后第3天经支气管内滴注给予初始剂量为50 mg/kg体重的天然牛表面活性剂(肺泡表面活性物质)。给药12小时后观察到氧合有显著改善(从最初的56 mmHg升至194 mmHg),随后动态顺应性改善(从最初的26 ml/cm H₂O升至41 ml/cm H₂O),吸气阻力改善(从最初的14 cm H₂O/lps降至11 cm H₂O/lps)。48小时后重复给予相同剂量的表面活性剂以防止可能的恶化,使气体交换和肺力学维持在上述水平。未观察到与表面活性剂给药相关的并发症。然而,患者在烧伤后第9天因肺外原因死亡。我们的结果表明,在重度吸入性损伤的烧伤患者中,重复给予外源性表面活性剂后气体交换和肺力学有显著改善。需要进一步研究以阐明表面活性剂给药的临床影响及其在吸入性损伤病例中使用相关的并发症。