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  • Title: [Extracorporeal respiratory assistance. Experience in the treatment of severe acute respiratory failure].
    Author: Castillo L, Bugedo G, Hernández G, Montes JM, Pablo Ilic J, Labarca E.
    Journal: Rev Med Chil; 1996 Jan; 124(1):45-56. PubMed ID: 8762618.
    Abstract:
    Acute respiratory distress syndrome (ARDS) secondary to systemic injury has a high mortality. Symptomatic treatment with mechanical ventilation, PEEP and high levels of inspired oxygen is effective for most of the patients. When ventilatory support fails in reversing hypoxemia, extracorporeal respiratory assistance has been advocated as a temporary treatment until lung repair occurs. We described our experience in eleven patients (9M, 2F, 41 +/- 16 yo) with severe ARDS refractory to conventional treatment and expected to die if not assisted with extracorporeal oxygenation. All patients required invasive monitoring; seven needed continuous renal therapy because of concurrent renal failure. Venous-venous percutaneous cannulation and systemic anticoagulation were performed and extracorporeal oxygenation and CO2 removal started with blood pump flows of 20 to 30% of patient cardiac output. Improved oxygenation and decreased CO2 levels were immediately observed in 10/11 patients. One patient failed to have reversal of hypoxemia because recirculation and died shortly after initiation of extracorporeal therapy. Plasma leak syndrome and bleeding were observed in 3 and 2 patients respectively. Extracorporeal assistance was maintained for 52 +/- 34 h (19-134). Five (45%) patients were weaned off the pump and two (18%) survived and were discharged. Despite the high cost, extracorporeal respiratory assistance, when applied to selected patients, can reverse hypoxia and may save some previously unsalvagable patients, allowing them to return to a normal life.
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