Journal
PEDIATRIC CRITICAL CARE MEDICINE
Volume 9, Issue 3, Pages 270-277Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/PCC.0b013e31816c7260
Keywords
hematopoietic stem cell transplantation; cancer; critically ill; mechanical ventilation; respiratory failure; pediatrics; mortality
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Objective: To assess the following hypotheses regarding mechanically ventilated pediatric oncology patents, including those receiving hematopoietc stem cell transplant (HSCT) and those not receiving HSCT: 1) outcomes are more favorable for nontransplant oncology patents than for those requiring HSCT; 2) outcomes have improved for both populations over time; and 3) there are factors available during the time of mechanical ventilation that identify patents with a higher likelihood of dying. Design: Retrospective review. Setting. Free-standing, tertiary care, pediatric hematology oncology hospital. Patients: All patents requiring invasive mechanical ventilation with a diagnosis of cancer or following HSCT from January 1996 to December 2004. Interventions. Bivariate and multivariate analysis. Dates of admission were grouped into time periods for analysis: 1996-1998, 1999-2001, and 2002-2004. Measurements and Main Results: There were 401 courses of mechanical ventilation (329 patents) analyzed. Forty-five percent of HSCT admissions (92 of 206) vs. 75% of non-HSCT oncology admissions (146 of 195) were extubated and discharged from the pediatric intensive care unit (p < .0001). Twenty-five percent of HSCT vs. 60% of non-HSCT admissions survived 6 months (p < .0001). Among admissions with an abnormal chest radiograph and a Pao(2)/Fio(2) ratio <200, pediatric intensive care unit survival increased for each successive time period, with 45% of HSCT and 83% of non-HSCT admissions surviving during 2002-2004. In multivariate analysis of all study patents, Pediatric Risk of Mortality scores on the day of intubation, allogeneic HSCT, cardiovascular failure, hepatic failure, neurologic failure, a previous course of mechanical ventilation within 6 months, and the time period intubated were associated with mortality. With the exception of time period, these same variables were associated with mortality in multivariate analysis of only HSCT patents. Conclusions: HSCT patents who require mechanical ventilation have worse outcomes than non-HSCT oncology patents. Outcomes for both groups have improved over time. Allogeneic transplant higher Pediatric Risk of Mortality scores, need for repeated mechanical ventilation, and concomitant organ system dysfunction are risk factors for death.
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