The Development and Preliminary Exploratory Validation of the PEdiatric Delirium Scale: Assessing the Feasibility and Accessibility of a Novel Delirium Scale

Abstract

Delirium screening and identification in the pediatric intensive care unit (PICU) can be a diagnostic challenge. Primarily, the burden of screening falls on the bedside nurses, who are juggling countless tasks throughout their shift. The nursing staff at the researcher's institution were concerned that the existing screen, Cornell Assessment for Pediatric Delirium (CAPD), detracted from workflow. The PEdiatric Delirium Scale (PEDS) was developed to accurately identify delirium in children of all developmental abilities and improve nursing workflow. This is a single-center, double-blinded, preliminary exploratory validation study that assesses the feasibility and accessibility of PEDS. This study was performed in a busy 24-bed quaternary PICU serving a diverse, noncardiac patient population. Enrolled patients underwent screening for delirium using the CAPD and PEDS. These results were compared to the gold standard psychiatric evaluation to determine the validity of the novel screen. Finally, the surveyed nurses reviewed their experience with CAPD and PEDS. The primary outcome was to explore the validation of PEDS in the PICU. Using the Youden index, an overall sensitivity of 79% for the detection of delirium (95% confidence interval [CI]: 0.61–0.91) and a specificity of 68% (95% CI: 0.64–0.73) were achieved with an optimal cut-point of 4, on a scale of 0 to 10. PEDS demonstrated a higher predictive value compared to CAPD. Elicited nursing feedback favored PEDS over CAPD, with 86% of respondents citing a shorter time to perform the screen. PEDS is a streamlined tool that can be used to detect pediatric delirium regardless of developmental abilities. Nursing surveys revealed improved workflow when comparing PEDS to CAPD.