Nosocomial pneumonia.
OBJECTIVE
Despite abundant literature on the management of nosocomial pneumonia, a number of aspects, from diagnosis to the therapy of nosocomial pneumonia, are still controversial. This review focuses on recent advances that can aid in the day-to-day care of these critically ill patients.


RESULTS
The risk factors for nosocomial pneumonia in specific subsets of trauma, postoperative and burn injury patients have been identified, with emphasis on the type of pneumonia developing in these populations - early or late onset nosocomial pneumonia. Resolution of nosocomial pneumonia, in terms of improvement of clinical parameters such as oxygenation, fever, leukocytosis and bacterial eradication, has been reported, and these data can lead to a better understanding of the natural course of the disease. The importance of initial, accurate empiric therapy in improving mortality in nosocomial pneumonia has been reinforced by multiple studies. Newer techniques to study colonization and the routes of spread of pathogenic organisms in the intensive care unit are adding to our understanding of how pneumonia develops, the role of infection control measures and the types of strategies that are needed for prevention. Oral decontamination is showing promise as a technique to prevent ventilator-associated pneumonia, and noninvasive ventilation has been shown to be useful in various etiologies of respiratory failure, with the beneficial effect of reducing the incidence of ventilator-associated pneumonia and its associated mortality. The implementation of protocolized treatment guidelines and antibiotic rotation policies are emerging as useful tools for reducing the frequency of antibiotic resistance and the impact of nosocomial pneumonia.


CONCLUSIONS
There is a better understanding of nosocomial pneumonia risk factors, mechanisms of bacterial colonization, and resolution of illness, with exciting developments in prevention and treatment emerging, and these data can help us achieve more effective management of this complex illness.
Mehta
Ravindra M
RM
Pulmonary and Critical Care Medicine, Winthrop-University Hospital, Mineola, NY 11501, USA.
Niederman
Michael S
MS
D003428:Cross Infection / Q000453:epidemiology* / Q000401:mortality / Q000517:prevention & control; D006801:Humans; D011014:Pneumonia / Q000453:epidemiology* / Q000401:mortality / Q000517:prevention & control; D012121:Respiration, Artificial / Q000009:adverse effects; D012307:Risk Factors