Ventilator-induced lung injury and multiple system organ failure: a critical review of facts and hypotheses
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To review how biotrauma leads to the development of multiple system organ failure (MSOF).
Design and setting
Published articles on experimental and clinical studies and review articles in the English language were collected and analyzed.
The concept that ventilation strategies using “large” tidal volumes and zero PEEP of injured lungs can enhance injury by the release of inflammatory mediators into the lungs and circulation, a mechanism that has been called biotrauma, is supported by evidence from experimental models ranging from mechanically stressed cell systems, to isolated lungs, intact animals, and humans. Biotrauma may lead to MSOF via spillover of lung-borne inflammatory mediators into the systemic circulation. However, spillover of other agents such as bacteria and soluble proapoptotic factors may also contribute to the onset of MSOF. Other less well studied mechanisms such as peripheral immunosuppression and translocation of bacteria and/or products from the gut may play an important role. Finally, genetic variability is a crucial factor.
The development of MSOF is a multifactorial process. Our proposed mechanisms linking mechanical ventilation and MSOF suggest several novel therapeutic approaches. However, it will first be necessary to study the mechanisms described above to delineate more precisely the contribution of each proposed factor, their interrelationships, and their time course. We suggest that scientific advances in immunology may offer novel approaches for prevention of MSOF secondary to ventilator-induced lung injury.
KeywordsBiotrauma Ventilator-induced lung injury Multiple organ system failure Compartmentalization Peripheral immunosuppression Proapoptotic soluble factors
- 11.Amato MBP, Barbas CSV, Medeiros DM, Magaldi RB, Schettino GPP, Lorenzi-Filho G, Kairalla RA, Deheinzelin D, Munoz C, Oliveira R, Takagaki TY, Carvalho CR (1998) Effect of a protective-ventilation strategy on mortality in the acute respiratory distress syndrome. N Engl J Med 338:347–354CrossRefPubMedGoogle Scholar
- 23.Dreyfuss D, Ricard JD, Saumon G. (2004) Comment: biotrauma hypothesis of ventilator-induced lung injury. Am J Respir Crit Care Med 169:315Google Scholar
- 24.Vlahakis NE, Schroedr MA, Limper AH, Hubmayr RD (1999) Stretch induces cytokine release by alveolar epithelial cells in vitro. Am J Physiol 227:L167–L173Google Scholar
- 59.Imai Y, Parodo J, Kajikawa O, de Perrot M, Fischer S, Edwards V, Cutz E, Liu M, Keshavjee S, Martin TR, Marshall JC, Ranieri VM, Slutsky AS (2003) Injurious mechanical ventilation and end-organ epithelial cell apoptosis and organ dysfunction in an experimental model of acute respiratory distress syndrome. JAMA 289:2104–2112CrossRefPubMedGoogle Scholar
- 68.Wells CL, Maddaus MA, Simmons RL (1988) Proposed mechanisms for the translocation of intestinal bacteria. Rev Infect Dis 110:958–979Google Scholar
- 71.Plötz FB, Vught AJ van, Heijnen CJ (1999) Ventilator-induced lung inflammation: is it always harmful? Intensive Care Med 125:236Google Scholar