Data-Driven Nurse Staffing in the Neonatal Intensive Care Unit

Neonatal acuity tool-defined staffing ratios in a tertiary Australian neonatal intensive care unit

AIMS

There is well-established data linking the adequacy of nurse staffing to patient outcomes. Evidence-based standards for staffing are therefore critical to drive improvements in clinical care. One such evidence-based approach is the use of patient acuity-based tools. The objective of this study is to determine the performance of a neonatal acuity tool in an Australian tertiary neonatal health-care setting, focusing on the classification of patient acuity and nursing:patient staffing ratios compared to current practice.

METHODS

Acuity data were collected in a neonatal intensive care unit (NICU) and special care baby unit (SCBU) over a 10-week period in 2023. Patient data were scored in the 16 domains at two time points (prior to morning and evening nursing shift changeover) for all admitted newborns.

RESULTS

For ventilated newborns nursed with a nurse:patient staffing ratio of 1:1, 78% of scores were within the L4-high acuity (score ≥ 26) band, with the remaining scores within the L3-high acuity (18-25) band. For newborns on non-invasive respiratory support in NICU staffed 1:1, the proportion scoring within the L4 acuity band was higher in the nasal high-flow group compared to the nasal continuous positive airway pressure group (P = 0.032), an effect not seen for those nursed 1:2 in NICU or for those on nasal high-flow nursed in SCBU either 1:2 or 1:3.

CONCLUSION

This study of how a neonatal acuity classification system compares with current nurse:patient staffing allocations in an Australian tertiary NICU, suggests refinements in staffing ratios for specific patient groups on respiratory support are possible.

Acuity Tools for the Antepartum and Neonatal Intensive Care Units

PURPOSE

To evaluate content validity and interrater reliability for acuity tools developed for the antepartum and neonatal intensive care unit (NICU) patient population.

STUDY DESIGN AND METHODS

Antepartum and NICU acuity tools were developed to better evaluate nurse staffing assignment equity and patient needs. Following several iterations with staff nurses and nurse leaders, content validity of the acuity tools was established via a panel of experts in each substantive area using the Content Validity Index. The final tools were then evaluated for interrater reliability using Intraclass Correlation.

RESULTS

Content validity for the Antepartum Acuity Tool was S-CVI/Ave = 0.87 and for the NICU Acuity Tool was S-CVI/Ave = 0.98. Interrater Reliability for the Antepartum Acuity tool was ICC = 0.88, and the NICU Acuity Tool was ICC = 0.95.

CLINICAL IMPLICATIONS

These tools have established content validity and interrater reliability and are appropriate for use in the antepartum and NICU settings to determine patient acuity and promote appropriate nurse-to-patient assignments.