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Q: We compared conventional treatment with pumpless extracorporeal lung membrane (Interventional Lung Assist [iLA] Novalung; Novalung GmbH, Hechingen, Germany) support in a pig model of postpneumonectomy severe acute respiratory distress syndrome.', 'Adult pigs underwent a left thoracotomy without (group I) or with a left extrapericardial pneumonectomy and radical lymphadenectomy (groups II to V). After stabilization, pigs belonging to group II were observed only, whereas in those belonging to groups III to V, a surfactant-depletion severe (Pao(2)/Fio(2) < 100) postpneumonectomy acute respiratory distress syndrome was induced. This was followed by observation (group III); treatment with conventional therapy including protective ventilation, steroids, and nitric oxide (group IV); or femoral arteriovenous iLA Novalung placement, near-static ventilation, steroids, and nitric oxide (group V). Each group included 5 animals. Primary outcome was extubation 12 hours postoperatively or postpneumonectomy acute respiratory distress syndrome.', 'A severe postpneumonectomy acute respiratory distress syndrome was obtained after 9 +/- 2 alveolar lavages over 90 +/- 20 minutes. In group V pigs, the iLA Novalung device diverted 17% +/- 4% of the cardiac output, permitted an oxygen transfer and carbon dioxide removal of 298.4 +/- 173.7 mL/min and 287.7 +/- 87.3 mL/min, respectively, and static ventilation (tidal volume, 2.2 +/- 1 mL/kg; respiratory rate, 6 +/- 2.9 breaths/min). All but 1 pig belonging to group V could be extubated compared with none in groups III and IV (P < .01), and only their lungs normalized cytokine release (P < .001) and surfactant (P < .03) and displayed fewer parenchymal lesions (P < .05).
A:
Does extracorporeal lung membrane provide better lung protection than conventional treatment for severe postpneumonectomy noncardiogenic acute respiratory distress syndrome?