Relationship between microbiologic and histologic features in bacterial pneumonia

American Journal of Respiratory and Critical Care Medicine
C H MarquetteA B Tonnel

Abstract

To investigate the relationship between the lung damage resulting from pneumonia and the local bacterial burden, we conducted a study comparing histologic and bacteriologic findings in pigs infected with bacterial pneumonia while free of antibiotic therapy and previous or concomitant lung disease. Seventy-eight lung specimens were obtained from 17 animals. The main findings are the following: (1) histologic lesions of pneumonia as well as parenchymal bacterial burden were unevenly distributed within the lungs and even within the lung segments; (2) specimens showing histologic evidence of pneumonia had significantly higher bacterial counts than specimens with bronchial infection and specimens with neither bronchial nor lung infection; (3) there was no significant difference in bacterial counts between lesions defined as pneumonia, confluent pneumonia and abscessed pneumonia; (4) we could not define a clearcut threshold for quantitative cultures to discriminate the presence or absence of pneumonia. This study providing experimental insights into the relationship between microbiologic and histologic features in bacterial pneumonia confirms previous findings in humans. Although, for investigational purpose, lung cultures can be hel...Continue Reading

Citations

Feb 4, 1998·Critical Care Clinics·H M LodeH Mauch
Jul 9, 1998·American Journal of Respiratory and Critical Care Medicine·D WermertA B Tonnel
Apr 6, 2002·American Journal of Respiratory and Critical Care Medicine·Jean Chastre, Jean-Yves Fagon
Jun 12, 2001·Intensive Care Medicine·S Ewig, A Torres
Feb 22, 2012·Intensive Care Medicine·Ioannis Pneumatikos
Mar 11, 2004·Infectious Disease Clinics of North America·Saad Nseir, Charles-Hugo Marquette
Apr 2, 2005·Clinics in Chest Medicine·Amalia AlcónAntoni Torres
Jul 11, 2001·Clinics in Chest Medicine·S Ewig, A Torres
Mar 14, 2014·Anesthesiology·Brant M Wagener, Jean-Francois Pittet

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