Bypassing nearest hospital for more distant neuroscience care in head-injured adults with suspected traumatic brain injury: Findings of the head injury transportation straight to neurosurgery (HITS-NS) pilot cluster randomised trial

Fiona Elizabeth Lecky*, Wanda Russell, Graham McClelland, Elspeth Pennington, Gordon Fuller, Steve Goodacre, Kyee Han, Andrew Curran, Damian Holliman, Nathan Chapman, Jennifer Freeman, Sonia Byers, Suzanne Mason, Hugh Potter, Timothy Coats, Kevin Mackway-Jones, Mary Peters, Jane Shewan

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)
6 Downloads (Pure)

Abstract

Objective Reconfiguration of trauma services, with direct transport of patients with traumatic brain injury (TBI) to specialist neuroscience centres (SNCs) - bypassing non-specialist acute hospitals (NSAHs), could improve outcomes. However, delays in stabilisation of airway, breathing and circulation (ABC) may worsen outcomes when compared with selective secondary transfer from nearest NSAH to SNC. We conducted a pilot cluster randomised controlled trial to determine the feasibility and plausibility of bypassing suspected patients with TBI- directly into SNCs - producing a measurable effect. 

Setting Two English Ambulance Services. 

Participants 74 clusters (ambulance stations) were randomised within pairs after matching for important characteristics. Clusters enrolled head-injured adults - injured nearest to an NSAH - with internationally accepted TBI risk factors and stable ABC. We excluded participants attended by Helicopter Emergency Medical Services or who were injured more than 1 hour by road from nearest SNC. 

Interventions Intervention cluster participants were transported directly to an SNC bypassing nearest NSAH; control cluster participants were transported to nearest NSAH with selective secondary transfer to SNC. 

Outcomes Trial recruitment rate (target n=700 per annum) and percentage with TBI on CT scan (target 80%) were the primary feasibility outcomes. 30-day mortality, 6-month Extended Glasgow Outcome Scale and quality of life were secondary outcomes. 

Results 56 ambulance station clusters recruited 293 patients in 12 months. The trial arms were similar in terms of age, conscious level and injury severity. Less than 25% of recruited patients had TBI on CT (n=70) with 7% (n=20) requiring neurosurgery. Complete case analysis showed similar 30-day mortality in the two trial arms (control=8.8 (2.7-14.0)% vs intervention=9.4(2.3-14.0)%). 

Conclusion Bypassing patients with suspected TBI to SNCs gives an overtriage (false positive) ratio of 13:1 for neurosurgical intervention and 4:1 for TBI. A measurable effect from a full trial of early neuroscience care following bypass is therefore unlikely. 

Trial registration number ISRCTN68087745.

Original languageEnglish
Article numbere016355
Pages (from-to)1-7
Number of pages7
JournalBMJ Open
Volume7
Issue number10
Early online date5 Oct 2017
DOIs
Publication statusPublished - Oct 2017
Externally publishedYes

Cite this