PMID- 18768578 OWN - NLM STAT- MEDLINE DCOM- 20090508 LR - 20130523 IS - 1399-3003 (Electronic) IS - 0903-1936 (Linking) VI - 32 IP - 6 DP - 2008 Dec TI - Ventilator-induced coagulopathy in experimental Streptococcus pneumoniae pneumonia. PG - 1599-606 LID - 10.1183/09031936.00045908 [doi] AB - Pneumonia, the main cause of acute lung injury, is characterised by a local pro-inflammatory response and coagulopathy. Mechanical ventilation (MV) is often required. However, MV can lead to additional injury: so-called ventilator-induced lung injury (VILI). Therefore, the current authors investigated the effect of VILI on alveolar fibrin turnover in Streptococcus pneumoniae pneumonia. Pneumonia was induced in rats, followed 48 h later by either lung-protective MV (lower tidal volumes (LV(T)) and positive end-expiratory pressure (PEEP)) or MV causing VILI (high tidal volumes (HV(T)) and zero end-expiratory pressure (ZEEP)) for 3 h. Nonventilated pneumonia rats and healthy rats served as controls. Thrombin-antithrombin complexes (TATc), as a measure for coagulation, and plasminogen activator activity, as a measure of fibrinolysis, were determined in bronchoalveolar lavage fluid (BALF) and serum. Pneumonia was characterised by local (BALF) activation of coagulation, resulting in elevated TATc levels and attenuation of fibrinolysis compared with healthy controls. LV(T)-PEEP did not influence alveolar coagulation or fibrinolysis. HV(T)-ZEEP did intensify the local procoagulant response: TATc levels rose significantly and levels of the main inhibitor of fibrinolysis, plasminogen activator inhibitor-1, increased significantly. HV(T)-ZEEP also resulted in systemic elevation of TATc compared with LV(T)-PEEP. Mechanical ventilation causing ventilator-induced lung injury increases pulmonary coagulopathy in an animal model of Streptococcus pneumoniae pneumonia and results in systemic coagulopathy. FAU - Haitsma, J J AU - Haitsma JJ AD - Interdepartmental Division of Critical Care Medicine, University of Toronto, Keenan Research Center, Li Ka Shing Knowledge Institute, St Michael's Hospital, 30 Bond Street, Queen Wing 4-042, Toronto, ON, M5B 1W8 Canada. jack.haitsma@utoronto.ca FAU - Schultz, M J AU - Schultz MJ FAU - Hofstra, J-J H AU - Hofstra JJ FAU - Kuiper, J W AU - Kuiper JW FAU - Juco, J AU - Juco J FAU - Vaschetto, R AU - Vaschetto R FAU - Levi, M AU - Levi M FAU - Zhang, H AU - Zhang H FAU - Slutsky, A S AU - Slutsky AS LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20080903 PL - England TA - Eur Respir J JT - The European respiratory journal JID - 8803460 RN - 0 (Antithrombins) RN - 0 (Lipopolysaccharides) RN - EC 3.4.21.5 (Thrombin) SB - IM MH - Animals MH - Antithrombins/chemistry MH - Blood Coagulation Disorders/complications/*diagnosis MH - Bronchoalveolar Lavage Fluid MH - Disease Models, Animal MH - Fibrinolysis MH - Lipopolysaccharides/metabolism MH - Male MH - Pneumonia, Bacterial/complications/*therapy MH - Pulmonary Gas Exchange MH - Rats MH - Rats, Sprague-Dawley MH - Streptococcus pneumoniae/*metabolism MH - Thrombin/chemistry MH - Ventilator-Induced Lung Injury/*diagnosis/etiology EDAT- 2008/09/05 09:00 MHDA- 2009/05/09 09:00 CRDT- 2008/09/05 09:00 PHST- 2008/09/05 09:00 [pubmed] PHST- 2009/05/09 09:00 [medline] PHST- 2008/09/05 09:00 [entrez] AID - 09031936.00045908 [pii] AID - 10.1183/09031936.00045908 [doi] PST - ppublish SO - Eur Respir J. 2008 Dec;32(6):1599-606. doi: 10.1183/09031936.00045908. Epub 2008 Sep 3.