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A study to evaluate whether photographs improve bystanders’ ability to find safe injection sites in emergencies

A randomised controlled trial of verbal guidance versus verbal guidance supplemented by a photographic aid for bystander identification of intramuscular tranexamic acid injection sites in a simulated road injury scenario

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ISRCTN
Registry ID
ISRCTN41280918
Enrollment
64
Registered
2025-08-08
Start date
2024-11-22
Completion date
Unknown
Last updated
2026-01-05

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Trauma-related haemorrhage (simulated context) Other

Interventions

Participants were randomised (1:1 block randomisation) into two groups: • Control (Verbal guidance): Participants received remote verbal instructions to identify the deltoid IM injection site on a sim

Sponsors

Devon Air Ambulance
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 100 Years

Inclusion criteria

Inclusion criteria: 1. Aged 18 years and older 2. Able to give informed consent 3. No formal medical or nursing qualifications

Exclusion criteria

Exclusion criteria: 1. Aged under 18 years 2. Formal qualification in medicine, nursing, or paramedicine

Design outcomes

Primary

MeasureTime frame
Proportion of participants who correctly identified a safe intramuscular injection site, defined as majority agreement (=2 of 3 raters) from independent clinical experts reviewing the standardised photographs post hoc (up to 30 days following data collection)

Secondary

MeasureTime frame
1. Rater concern about injection site safety: Proportion of sites eliciting concern, as assessed by independent clinical experts during post hoc photograph review (up to 30 days following data collection). 2. Participant confidence: Self-reported confidence in delivering an intramuscular injection, measured using a structured questionnaire immediately post-task 3. Effect of participant demographics and prior training: Association between participant age, sex, and prior first aid or injection training (collected via baseline questionnaire) and the accuracy of injection site identification, as determined by expert post hoc photograph review.

Countries

England, United Kingdom

Contacts

Public ContactTim Nutbeam
timnutbeam@nhs.net+44 (0)7779231813

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026