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Comment
. 2019 May 15;199(10):1178-1181.
doi: 10.1164/rccm.201811-2163ED.

Teaching an Old Intensivist Neutrophil Tricks: Using Alveolar Neutrophilia to Diagnose Ventilator-associated Pneumonia

Affiliations
Comment

Teaching an Old Intensivist Neutrophil Tricks: Using Alveolar Neutrophilia to Diagnose Ventilator-associated Pneumonia

Samir Gautam et al. Am J Respir Crit Care Med. .
No abstract available

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Figures

Figure 1.
Figure 1.
Pneumonic immune responses. Under healthy conditions (left panel), low levels of commensal bacteria and resting, noninflammatory macrophages predominate. The mechanically ventilated lung (top right panel) has numerous immune stimuli, for example, relating to volutrauma-induced tissue damage and systemic inflammation. These factors lead to endothelial activation and immune infiltrate, but not overt pneumonia. During ventilator-associated pneumonia (depicted in the bottom right panel), pathogenic bacteria further activate macrophages and induce both damage and stimulation of epithelial cells. Together, these drive a robust pyogenic inflammatory response, which may be detected by either one of the diagnostic methods described here.

Comment on

  • Multidimensional Assessment of the Host Response in Mechanically Ventilated Patients with Suspected Pneumonia.
    Walter JM, Ren Z, Yacoub T, Reyfman PA, Shah RD, Abdala-Valencia H, Nam K, Morgan VK, Anekalla KR, Joshi N, McQuattie-Pimentel AC, Chen CI, Chi M, Han S, Gonzalez-Gonzalez FJ, Soberanes S, Aillon RP, Watanabe S, Williams KJN, Lu Z, Paonessa J, Hountras P, Breganio M, Borkowski N, Donnelly HK, Allen JP, Amaral LA, Bharat A, Misharin AV, Bagheri N, Hauser AR, Budinger GRS, Wunderink RG. Walter JM, et al. Am J Respir Crit Care Med. 2019 May 15;199(10):1225-1237. doi: 10.1164/rccm.201804-0650OC. Am J Respir Crit Care Med. 2019. PMID: 30398927 Free PMC article.

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