Enteral and Parenteral Nutrition Timing in eICU Collaborative Research Database by Race: A Retrospective Observational Study

Introduction

Racial and ethnic disparities in malnutrition are well-known, but it is unknown if there are disparities in early nutrition delivery for intensive care unit (ICU) patients, which is associated with better outcomes. We investigated the timing of enteral nutrition (EN) and parenteral nutrition (PN) initiation in the ICU, examining for racial differences.

Methods

Using the eICU-Collaborative Research Database (eICU-CRD) from 2014 to 2015, we analyzed patients eligible for EN and PN from 208 hospitals. EN and PN delivery was captured through intake/output entries. Exclusions included pre-existing EN/PN and short (<4 d) mechanical ventilation. Severity-of-illness was assessed using the sequential organ failure assessment (SOFA) score. Self-identified race was defined as the primary exposure, and Cox proportional hazards models were used to examine the association between race and time to EN and PN initiation, adjusting for patient, ICU, and hospital characteristics.

Results

Of 1914 patients from 14 hospitals with EN data (5.3% Black, 42.4% female, median age 65 y), 888 received EN. Among Black and White patients, the median [Q1, Q3] time from mechanical ventilation to EN was 1.5 [1.0, 2.8] d. Race was not associated with time until EN initiation (hazard ratio = 0.961, 95% confidence interval 0.693, 1.333). Rather, other variables including sex, SOFA score, hospital characteristics and ICU unit type appeared to account for variation in EN initiation. Among 31,551 patients from 59 hospitals with PN data (11.3% Black, 45.1% female, median age 67 y), 1140 received PN, with a median [Q1, Q3] time to PN initiation of 7.4 [4.2, 12.4] d amongst Black and White patients. Race was not associated with time until PN initiation (hazard ratio = 1.095, 95% confidence interval = 0.901, 1.331). Instead, sex, body mass index, SOFA score, hospital characteristics and ICU unit type appeared to account for variation in PN initiation.

Conclusions

Disparities in EN and PN delivery in the eICU-CRD dataset from 2014 to 2015 were not associated with race, but rather with sex, body mass index, SOFA, hospital characteristics and ICU unit type. Further investigations using more current data are needed.