• Aaron C Spicer, Carolyn S Calfee, Matthew S Zinter, Robinder G Khemani, Victoria P Lo, Mustafa F Alkhouli, Benjamin E Orwoll, Ana L Graciano, Juan P Boriosi, James P Howard, Heidi R Flori, Michael A Matthay, and Anil Sapru.
• 1Department of Anesthesia, Critical Care, and Pain Medicine, Massachusetts General Hospital, Boston, MA.2Departments of Anesthesia and Medicine, University of California, San Francisco, CA.3Division of Critical Care, Department of Pediatrics, University of California, Benioff Children's Hospital-San Francisco, San Francisco, CA.4Departments of Anesthesiology and Critical Care Medicine, Children's Hospital Los Angeles, University of Southern California Keck School of Medicine, Los Angeles, CA.5Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD.6Department of Pediatrics, Children's Hospital of Central California, Fresno, CA.7Department of Pediatrics, University of Wisconsin-Madison, Madison, WI.8Division of Pediatric Critical Care, University of California, San Francisco Benioff Children's Hospital-Oakland, Oakland, CA.9Department of Pediatrics, University of California, Los Angeles, Los Angeles, CA.
• Pediatr Crit Care Me. 2016 Oct 1; 17 (10): 907-916.

ObjectivesDespite declining mortality, acute respiratory distress syndrome is still involved in up to one third of pediatric intensive care deaths. The recently convened Pediatric Acute Lung Injury Consensus Conference has outlined research priorities for the field, which include the need for accurate bedside risk stratification of patients. We aimed to develop a simple yet robust model of mortality risk among pediatric patients with acute respiratory distress syndrome to facilitate the targeted application of high-risk investigational therapies and stratification for enrollment in clinical trials.DesignProspective, multicenter cohort.SettingFive academic PICUs.PatientsThree hundred eight children greater than 1 month and less than or equal to 18 years old, admitted to the ICU, with bilateral infiltrates on chest radiograph and PaO2/FIO2 ratio less than 300 in the clinical absence of left atrial hypertension.InterventionsNone.Measurements And Main ResultsTwenty clinical variables were recorded in the following six categories: demographics, medical history, oxygenation, ventilation, radiographic imaging, and multiple organ dysfunction. Data were measured 0-24 and 48-72 hours after acute respiratory distress syndrome onset (day 1 and 3) and examined for associations with hospital mortality. Among 308 enrolled patients, mortality was 17%. Children with a history of cancer and/or hematopoietic stem cell transplant had higher mortality (47% vs 11%; p < 0.001). Oxygenation index, the PaO2/FIO2 ratio, extrapulmonary organ dysfunction, Pediatric Risk of Mortality-3, and positive cumulative fluid balance were each associated with mortality. Using two statistical approaches, we found that a parsimonious model of mortality risk using only oxygenation index and cancer/hematopoietic stem cell transplant history performed as well as other more complex models that required additional variables.ConclusionsIn the PICU, oxygenation index and cancer/hematopoietic stem cell transplant history can be used on acute respiratory distress syndrome day 1 or day 3 to predict hospital mortality without the need for more complex models. These findings may simplify risk assessment for clinical trials, counseling families, and high-risk interventions such as extracorporeal life support.

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