• Pediatr Crit Care Me · Mar 2012

    Lipoxin A(4) and 8-isoprostane in the exhaled breath condensate of children hospitalized for status asthmaticus.

    • Rashed A Hasan, Edmund OʼBrien, and Peter Mancuso.
    • Providence Hospital and Medical Center, Toledo, OH, USA. rashedh48@gmail.com
    • Pediatr Crit Care Me. 2012 Mar 1;13(2):141-5.

    ObjectiveTo measure levels of 8-isoprostane and Lipoxin A4 in the exhaled breath condensate of children (7-17 yrs old) recovering from status asthmaticus in a pediatric intensive care unit and to compare their respective levels in the exhaled breath condensate collected from age-matched "healthy" children enrolled from an ambulatory pediatric clinic during well-child visits.DesignProspective case-controlled study.SettingTeaching hospitals and a research laboratory.PatientsChildren recovering from status asthmaticus and age-matched controls.InterventionsCollection of exhaled breath condensate from patients recovering from status asthmaticus and controls for purpose of measurement of 8-isoprostane and Lipoxin A4.Measurements And Main ResultsThere was no difference in age (11.9 ± 3.0 vs. 12.0 ± 3.3 yrs, p = .9) between patients and control subjects. All participants completed the exhaled breath condensate collection without complications. There was no difference in the pulmonary index (3.3 ± 2.2 vs. 3.1 ± 1.9, p = 1.0) after collection of exhaled breath condensate compared with baseline values in patients with status asthmaticus. The level of 8-isoprostane was significantly higher (63 ± 9 vs. 41 ± 13 pg/mL, p < .001), whereas the level of Lipoxin A4 was significantly lower (5.6 ± 2.9 vs. 10.5 ± 3.1 ng/mL, p < .001) in the exhaled breath condensate from children recovering from status asthmaticus compared with control subjects.Conclusions8-Isoprostane was elevated and Lipoxin A4 is decreased in the exhaled breath condensate of children recovering from status asthmaticus in a pediatric intensive care unit. These data may provide new insight into the pathophysiology of asthma in children in this clinical setting.

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