Post-intensive care syndrome (PICS) describes a cluster of ongoing symptoms experienced by a large proportion of patients previously admitted to critical care. Despite a large rise in survival following critical care, interventions to support recovery and combat PICS are lacking. It has been suggested that the use of digital tools such as virtual reality (VR) may play a useful role in the development of recovery-supporting interventions. We engaged with people with lived experience of critical care admission to coproduce a VR intervention (ViRtual REality to AiD recoverY post ICU (VR READY)). Here, we present a protocol for the initial feasibility and acceptability testing of this intervention.

This is a single-arm, single-site, non-randomised feasibility trial of VR READY. Up to 25 participants recently admitted to critical care will be recruited to use the VR READY intervention for at least 5 min per day for a period of 14 days. Participants must have capacity to consent and be free from ongoing delirium in order to participate. Outcomes relating to sleep and well-being will be measured at baseline and at day 14 after intervention delivery. The primary outcome is feasibility, which will be assessed according to prespecified criteria. Participants will complete a qualitative interview to assess acceptability of the intervention, trial design and outcomes approximately 1 month after completing the intervention period. No formal statistical analysis of outcomes will be conducted, but these will be summarised descriptively. Interviews will be subjected to reflexive thematic analysis.

This study received a favourable ethical opinion by North-East York Research Ethics Committee (Ref 23/NE/0113) in June 2024. Study results will be disseminated through the peer review literature, ISRCTN registry and directly to participants, which will be facilitated by the study public and patient involvement steering group.

ISRCTN88854487.

Prospective, real-world clinical studies of the association between skin color and pulse oximeter (SpO2) accuracy in children are needed to address the limitations of previous research. Such studies are essential for generating evidence for clinicians, regulators and industry. This is the protocol for a multisite study funded by the National Heart, Lung, and Blood Institute (R01HL171313; 1 January 2024–31 December 2028).

In this pragmatic, observational study conducted in three large paediatric cardiac catheterisation centres in the USA, children undergoing cardiac catheterisation with directly measured arterial oxygen saturation will be prospectively enrolled. The outcome variable (SpO₂ bias) is the difference between contemporaneous paired measurements of pulse oximetry (SpO₂) and the standard reference comparator, arterial blood sample oxygen saturation (SaO₂), obtained during the catheterisation procedure. The independent variable is an objective measure of skin colour obtained via spectrophotometry. Our primary analysis is a multivariable regression model testing the relationship between skin colour and SpO₂ bias, after adjusting for covariates. We will also conduct a moderator analysis to identify factors that may affect the magnitude of the association. The target sample size is 584 participants.

This study was approved by the University of Pennsylvania Institutional Review Board (#854895) under expedited review. Study risks are minimal. Parental permission, and child assent when applicable, are obtained prior to enrolment. In accordance with the NIH Public Access Policy, publications associated with the study will be made publicly available through PubMed Central. The analytic dataset will be contributed to a repository for future use. In collaboration with a children’s hospital-based research family advisory council, interpretation and dissemination of the results for lay, clinical and scientific audiences will be considered.

Although not a clinical trial, this observational study is registered on ClinicalTrials.gov (identifier: NCT06529575) for public awareness.