Reducing the time to activation of the emergency call system in operating theatres: effect of installing vertical red line indicators

Marshall, SD; Rush, C; Elliott, L; Wadman, H; Dang, J; St John, A; Kelly, FE

doi:10.1016/j.bja.2024.03.030

Safety, quality & education

Reducing the time to activation of the emergency call system in operating theatres: effect of installing vertical red line indicators

Br J AnaesthPublished 9 May 2024Before-and-after study

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Study context

Population: Operating theatre team members (anaesthetists, surgeons, nurses, operating theatre practitioners, technicians) in the UK and Australia, approached without prior warning to simulate activation of an emergency call
Participants: 94 vs 125

Comparison: Vertical red line from ceiling to emergency call button vs no line
Pre-installationn = 94reference
Post-installationn = 125
Outcome: Emergency call system activation time

Methodological detailssimulation, multicentre (UK and Australia)

Simulation
Multicentre (UK and Australia)

Main finding

As reported in the abstract

Activations taking >10 s

Pre-installation31.9%30 of 94

Post-installation13.6%17 of 125

P = 0.001

Further findings

Activations taking >20 s

P < 0.001

Pre-installation19.1%

Post-installation4.8%

Longest activation duration

Pre-installationlongest duration 120 s

Post-installationlongest duration 35 s

Original publication

Reducing the time to activation of the emergency call system in operating theatres: effect of installing vertical red line indicators. Br J Anaesth. Published 9 May 2024. doi:10.1016/j.bja.2024.03.030

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