Tuberculosis and Respiratory Diseases

The Korean Academy of Tuberculosis and Respiratory Diseases (대한결핵및호흡기학회)
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Clinical Utility of Pre-B-Cell Colony-Enhancing Factor in Bronchoalveolar Lavage Fluid of Acute Critical Ill Patients with Lung Infiltrates

폐 침윤을 동반한 급성 중증 환자의 기관지 폐포 세척액에서 측정한 Pre-B-Cell Colony-Enhancing Factor의 임상적 유용성

  • Lee, Kwangha (Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine) ;
  • Hong, Sang-Bum (Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine)
  • 이광하 (울산대학교 의과대학 서울아산병원 호흡기내과학교실) ;
  • 홍상범 (울산대학교 의과대학 서울아산병원 호흡기내과학교실)
  • Received : 2009.10.12
  • Accepted : 2009.10.14
  • Published : 2009.11.30
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Abstract

Background: Pre-B-cell colony enhancing factor (PBEF) has been suggested as a novel biomarker in sepsis and acute lung injury. We measured the PBEF in bronchoalveolar lavage (BAL) fluid of acute critically ill patients with lung infiltrates in order to evaluate the clinical utility of measuring PBEF in BAL fluid. Methods: BAL fluid was collected by bronchoscope from 185 adult patients with lung infiltrates. An enzyme-linked immunosorbent assay was then performed on the collected fluids to measure the PBEF. Results: Mean patient age was 59.9 ${\pm}$14.5 years and 63.8% of patients were males. The mean concentration of PBEF in BAL fluid was 17.5 ${\pm}$88.3 ng/mL, and patients with more than 9 ng/mL of PBEF concentration (n=26, 14.1%) had higher Acute Physiology and Chronic Health Evaluation (APACHE) II and Sequential Organ Failure Assessment (SOFA) scores on the BAL exam day. However, there were no significant differences in clinical characteristics between survivors and non-survivors. In patients with leukocytosis (n=93) seen on the BAL exam day, the linear regression analysis revealed a significant, positive relationship between PBEF and APACHE II ($r^2$=0.06), SOFA score ($r^2$=0.08), Clinical Pulmonary Infection Score ($r^2$=0.05), and plateau pressure in patients on ventilators ($r^2$=0.07) (p<0.05, respectively). In addition, multivariate regression analysis with PBEF as a dependent variable showed that the plateau pressure ($r^2$=0.177, p<0.05) was correlated positively with PBEF. Conclusion: The PBEF level in the BAL fluid may be a useful, new biomarker for predicting the severity of illness and ventilator-induced lung injury in critically ill patients with lung infiltates and leukocytosis.

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References

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