Outcomes in early mobilisation research in critically ill children: A scoping review

The implementation of physical activity protocols within the Paediatric Intensive Care Unit (PICU) represents a significant shift toward proactive rehabilitation for critically ill children. Prior research has shown that early mobilisation is both safe and feasible for this vulnerable population, yet its impact on long-term recovery remains poorly understood. Historically, clinical management focused primarily on deep sedation and immobilization to ensure patient safety during acute illness. Clinical teams frequently encounter challenges when attempting to quantify the physiological benefits of these interventions due to a lack of standardized measurement tools. Without consistent metrics, comparing the efficacy of different rehabilitation strategies across various medical centers becomes nearly impossible. The current literature often focuses on immediate safety rather than comprehensive functional recovery or quality of life indicators. This gap motivated a systematic investigation into the specific endpoints used by researchers to evaluate the success of early movement protocols.

This scoping review maps the diverse array of metrics employed to assess early physical activity interventions in critically ill pediatric patients. The investigators sought to identify every reported variable to understand how success is currently defined in the intensive care setting. By categorizing these endpoints, the team aimed to highlight which aspects of patient recovery receive the most scientific attention. The analysis also intended to uncover areas of recovery, such as life impact and perception, that remain underrepresented in contemporary clinical trials. Providing a structured overview of these variables serves as a necessary step toward harmonizing future research efforts across the globe. The ultimate goal involves creating a foundation for a consensus-based measurement framework that incorporates both clinical and parental perspectives. Establishing this comprehensive overview facilitates the eventual creation of a standardized measurement framework for the entire field.

The research team conducted a comprehensive systematic search across Medline, Embase, Cochrane library, and CINAHL databases on April 3rd, 2023. This search strategy imposed no restrictions on study design to ensure the inclusion of a wide variety of evidence sources from different clinical contexts. Two independent reviewers performed a multi-stage screening process involving titles, abstracts, and full-text manuscripts to identify relevant literature. Data extraction focused on identifying every outcome measure associated with early physical intervention in the Paediatric Intensive Care Unit (PICU). A second reviewer subsequently verified all extracted data points to maintain high levels of accuracy and procedural rigor throughout the analysis. The investigators then organized these findings into seven distinct domains: mortality, physiological status, life impact, resource use, adverse events, process indicators, and perception. This structured approach allowed for a clear comparison of how different studies prioritize various aspects of patient health and recovery.

The analysis revealed 148 unique metrics across 25 included studies, which the investigators eventually condensed into 40 distinct outcome clusters. These findings were derived from a systematic screening of 3380 titles that met the predefined criteria for pediatric rehabilitation research. Resource use emerged as a dominant theme, with the length of Paediatric Intensive Care Unit (PICU) stay being the most frequently reported variable. Adverse events also received significant attention, particularly the unintentional removal of catheters, tubes, or medical lines during physical activity. Process indicators, such as the specific types and frequencies of mobilisation activities, were well-documented across the included literature. In contrast, mortality and long-term functionality outcomes were selected the least often by the study authors. These findings demonstrate a high degree of heterogeneity in how researchers measure the impact of early movement on critically ill children.

The high level of heterogeneity identified in this review underscores the urgent need for a Core Outcome Set (COS) in pediatric critical care. Standardizing these metrics will enable more effective data synthesis and improve the overall quality of evidence for rehabilitation interventions. Pediatric intensive care unit experts and parents must collaborate to identify which recovery indicators hold the most value for families during the healing process. Future research should strive to include more assessments of long-term functionality and life impact to provide a holistic view of patient health. This categorized overview provides the necessary groundwork for developing a unified measurement framework that can be applied globally. By aligning research endpoints, the scientific community can better determine the true effectiveness of early physical activity for critically ill children. The study's authors propose that this roadmap will facilitate more robust clinical trials and improve patient care standards.