Objective
To determine the feasibility of conducting a longitudinal prospective study to evaluate functional recovery and predictors of impaired functional recovery in critically ill children.
Design
Prospective pilot study.
Setting
Single center Pediatric Intensive Care Unit (PICU) at McMaster Children’s Hospital, Hamilton, Canada.
Patients
Children aged 12 months to 17 years, with at least one organ dysfunction, limited mobility or bed-rest during the first 48 hours of PICU admission, and a minimum 48 hour PICU length of stay, were eligible. Patients transferred from a neonatal intensive care unit prior to ever being discharged home, already mobilizing well or at baseline functional status at time of screening, with an English language barrier, and prior enrollment into this study were excluded.
Measurements
The primary outcome was feasibility, as defined by the ability to screen, enroll eligible patients, and execute the study procedures and measurements on participants. Secondary outcomes included functional status at baseline, 3 and 6 months, PICU morbidity and mortality. Functional status was measured using the Pediatric Evaluation of Disability Inventory (PEDI), and the Participation and Environment Measure for Children and Youth (PEM-CY).
Main results
Thirty-three patients were enrolled between October 2012 and April 2013. Consent rate was 85%, follow-up rates 93% at 3 months, and 71% at 6 months. We were able to execute the study procedures and measurements, demonstrating feasibility of conducting a future longitudinal study. Functional status deteriorated following critical illness. Recovery appears to be influenced by baseline health or functional status, and severity of illness.
Conclusion
Longitudinal research is needed to understand how children recover after a critical illness. Our results suggest factors that may influence the recovery trajectory, and were used to inform the methodology, outcomes of interest, and appropriate sample size of a larger multi-center study evaluating functional recovery in this population.