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Medicina Intensiva

versión impresa ISSN 0210-5691

Resumen

ESTELLA, Ángel et al. Bronchoalveolar lavage for diagnosing pneumonia in mechanically ventilated patients. Med. Intensiva [online]. 2008, vol.32, n.9, pp.419-423. ISSN 0210-5691.

Objective. To evaluate the diagnostic role of bronchoalveolar lavage (BAL) in mechanically ventilated patients with suspected pneumonia and to describe the clinical outcome in the different kinds of pneumonia in critically ill patients. Design. Descriptive study. Setting. A 17-bed medical and surgical intensive care unit. Patients. Mechanically ventilated patients admitted to the ICU from November 2003 to March 2006 with suspected pneumonia who underwent bronchoscopy with BAL. Interventions. BAL was performed by fiberoptic bronchoscopy with three aliquots of 50 ml sterile normal saline. Recovered BAL fluid was processed for microbiologic analysis. Main variables of interest. Age, APACHE II score within the first 24 hours of admission, time on mechanical ventilation, ICU length of stay, mortality, and isolated bacteria were analyzed. Results. A total of 96 cases of suspected pneumonia with BAL were recruited, including 4 groups: community associated pneumonia (CAP), 12 cases, early-onset ventilator-associated pneumonia (VAP), 26 cases, late-onset ventilator-associated pneumonia, 43 cases, and immunocompromised patients, 15 cases. BAL was positive (> 10000 ufc/ml) in 40 (41.7%) patients (2, 16, 17 and 5 patients with CAP, early-onset VAP, late-onset VAP and immunocompromised, respectively). Mortality was 33.3%, 26.9%, 25.6% and 73.3% in CAP, early-onset VAP, late-onset VAP and immunocompromised patients respectively. Conclusions. The low incidence of positive BAL in the CAP group supports using BAL only for particularly severe, selected cases. Mortality was very high in the immunocompromised patients. In the light of our personal experience, BAL is most useful in the diagnosis of pneumonia in the group of patients with VAP.

Palabras clave : Pneumonia; Bronchoalveolar lavage; Mechanical ventilation.

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