Hysterectomy, a common surgical procedure, is frequently associated with moderate-to-severe postoperative pain and a high incidence of postoperative nausea and vomiting (PONV). Dexamethasone, a corticosteroid, may help alleviate these symptoms; however, existing evidence is largely drawn from mixed surgical populations and does not specifically address its efficacy and safety in hysterectomy patients. This meta-analysis provides a focused and updated synthesis of randomised controlled trials (RCTs) in this population, incorporating time-stratified pain outcomes and subgroup analyses by dose, surgical approach, timing and route of administration to evaluate the role of dexamethasone in postoperative recovery.

Systematic review and meta-analysis using the Grading of Recommendations, Assessment, Development and Evaluation (GRADE) approach.

PubMed, Scopus, Google Scholar and The Cochrane Central Register of Controlled Trials (CENTRAL) were searched through 1 November 2024.

We included RCTs comparing dexamethasone with placebo for postoperative outcomes in hysterectomy patients.

Two independent reviewers used standardised methods to search, screen and code included studies. Risk of bias was assessed using the Cochrane Collaboration and Evidence Project tools. Meta-analysis was conducted using random effects models. Findings were summarised in GRADE evidence profiles and synthesised qualitatively.

15 RCTs (1362 patients) were included. Dexamethasone significantly reduced PONV (risk ratio (RR): 0.53, 95% CI 0.47 to 0.61, p2: 0% high certainty) and pain scores at 24 hours (mean difference (MD): –0.20, 95% CI –0.35 to –0.05, p=0.009, I²=0%, moderate certainty), 8–12 hours (MD: –0.60, 95% CI –0.88 to –0.31, p2: 27%, moderate certainty and 4 hours (MD: –0.43, 95% CI –1.07 to 0.21, p=0.19, 93%, moderate certainty). It also decreased the use of rescue antiemetics (RR: 0.57, 95% CI 0.43 to 0.75, I²: 39%, high certainty) and postoperative opioid consumption (standardised MD: –0.48, 95% CI –0.90 to –0.05, p=0.03, I²: 74%, low certainty). The effects of rescue analgesics and hospital stay duration were nonsignificant. Subgroup analyses showed consistent antiemetic efficacy of dexamethasone across doses, timings, routes and procedures. For pain, greater analgesic effects were seen with higher doses and perineural administration, particularly at 8–12 hours. The risk of bias was low in most studies, but evidence of publication bias was observed for the pain score outcome.

Dexamethasone is an effective adjunct in hysterectomy, significantly reducing PONV and postoperative pain at 8–12 and 24 hours, particularly with 4–10 mg doses. Benefits are consistent across routes, timings and surgical approaches, with greater early analgesia after perineural use. It reduces opioid consumption but has a limited effect on rescue analgesia, supporting its role as a complementary analgesic. While generally considered safe, current safety data are limited, highlighting the need for further research. These results support its use in multimodal recovery protocols and identify priorities for future studies in high-risk and diverse surgical populations.

CRD42024608067.

Children with limited access to dental care can be negatively impacted by reduced frequency of oral health monitoring, delays in diagnosis of dental disease and increased waits for dental care, resulting in them experiencing more disease (extent and amount). Smartphone-based intraoral photography has been cited as having the potential to improve oral health monitoring for children through screening; however, it has not been well evaluated, and its limitations are unclear. The picture-perfect study aims to assess diagnostic accuracy, feasibility and acceptability to determine whether remote photographic monitoring can be effectively integrated into pathways of dental care for children aged 6-16 years.

Observational, cross-sectional, mixed-methods study with three workflows: Workflow 1: development of user-friendly, comprehensive guidance to help parent/carers (parents) take high-quality intraoral photographs of their children’s mouths. The guidance will be codesigned with parents and healthcare professionals. Workflow 2: diagnostic accuracy using intraoral photographs taken by a parent of their children will be evaluated by comparing clinicians' diagnoses from the photographs to gold-standard clinical visual-tactile examinations. Parent–child dyads (n=110) will be recruited to capture intraoral photographs using positioning aids, guidance and smartphones provided by the research team. The diagnoses will focus on plaque accumulation, gingival health, restoration status and dental caries. Diagnostic accuracy will be assessed using sensitivity, specificity, positive predictive value, negative predictive value and area under the curve. Workflow 3: assessment of feasibility and acceptability will be through task completion rates, photograph quality and participant feedback. Qualitative interviews and an online survey will capture parents’ and children’s experiences. Observational data will provide insights into practical challenges.

This study, approved by the National Health Service (NHS) Research Ethics Committee (Integrated Research Application System [IRAS]: 24/EE0137), will be conducted in adherence to the Declaration of Helsinki and Good Clinical Practice (GCP) guidelines. Written informed consent will be obtained from all participating parents, with age-appropriate assent from children prior to enrolment. Participants have the right to withdraw at any time without explanation, and their data will be anonymised to ensure privacy and confidentiality. Study findings will be disseminated through peer-reviewed journals, conference presentations and reports to relevant stakeholders.

The study protocol has been registered on the Open Science Framework: https://doi.org/10.17605/OSF.IO/WX29D.