Journal
PEDIATRIC CRITICAL CARE MEDICINE
Volume 22, Issue 1, Pages 114-124Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/PCC.0000000000002547
Keywords
fluid overload; fluid therapy; late fluid accumulation; outcomes; timing
Categories
Funding
- Center for Clinical and Translational Science Training Grant Support [8UL1-TR000077]
- Cincinnati Children's Hospital Medical Center's Acute Care Nephrology Fellowship through a grant from Gambro Renal Products, Inc
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This study aimed to determine if the timing of excess fluid accumulation is associated with adverse patient outcomes. The results showed that peak fluid overload value after 48 hours of ICU admission was related to longer ICU and hospital stays, as well as increased risk of mortality.
Objectives: To determine if the timing of excess fluid accumulation (fluid overload) is associated with adverse patient outcomes. Design: Secondary analysis of a prospectively collected dataset. Setting: PICU of a tertiary care hospital. Patients: Children 3 months to 25 years old admitted to the PICU with expected length of stay greater than or equal to 48 hours. Interventions: Patients were dichotomized by time of peak overload: peak fluid overload from ICU admission (Day(0)) to 48 hours (Day(3-7)) and peak fluid overload value after 48 hours of ICU admission, as well as time of first-time negative daily fluid balance: net fluid out greater than net fluid in for that 24-hour period. Measurements and Main Results: There were 177 patients who met inclusion criteria, 92 (52%) male, with an overall mortality rate of 7% (n = 12). There were no differences in severity of illness scores or fluid overload on Day(0) between peak fluid overload from ICU admission (Day(0)) to 48 hours (Day(3-7)) (n = 97; 55%) and peak fluid overload value after 48 hours of ICU admission (n = 80; 45%) groups. Peak fluid overload value after 48 hours of ICU admission was associated with a longer median ICU course (8 [4-15] vs 4 d [3-8 d]; p <= 0.001], hospital length of stay (18 [10-38) vs 12 [8-24]; p = 0.01], and increased risk of mortality (n = 10 [13%] vs 2 [2%]; chi(2) = 7.6; p = 0.006]. ICU length of stay was also longer in the peak fluid overload value after 48 hours of ICU admission group when only patients with at least 7 days of ICU stay were analyzed (p = 0.02). Timing of negative fluid balance was also correlated with outcome. Compared with Day(0-2), a negative daily fluid balance on Day(3-7) was associated with increased length of mechanical ventilation (3 [1-7] vs 1 d [2-10 d]; p <= 0.001) and increased hospital (17 [10-35] vs 11 d [7-26 d]; p = 0.006) and ICU (7 [4-13] vs 4 d [3-7 d]; p <= 0.001) length of stay compared with a negative fluid balance between Day(0-2). Conclusions: Our results show timing of fluid accumulation not just peak percentage accumulated is associated with patient outcome. Further exploration of the association between time and fluid accumulation is warranted.
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