Our most recent HEMS Education Day on the 31st May, took a focus on Major Incidents and the role our service plays. The day commenced with some insightful talks, before leading into an exercise that saw our medical teams integrate with an Ambulance response to a timely scenario. Despite being crafted months ago, our scenario closely mirrored the events in London that unfolded 4 days later. Indeed, it was modelled from other recent world events such as in Melbourne, London, Nice and Berlin – the growing threat of “Intentional Vehicular Assault” (IVA).
The learning from the day was immense. Below is just a summary of a few key points of the day.
10.30am, Wednesday morning. Rogue driver has driven through Parramatta’s Church St Mall, intentionally hitting multiple pedestrians. Gunshots were also heard. Police on-scene and driver has been confirmed dead from gunshot wounds. Security threat now neutralised.
Following multiple “000” calls, initially 7 paramedic teams were tasked to the scene, along with one Inspector. A further 5 paramedic teams arrived during the scenario to assist with transport. From Bankstown Helicopter base, 2 road medical teams were dispatched via the Aeromedical Control Centre (ACC) based on initial reports. This was quickly followed a few minutes later with 2 helicopter teams being tasked. The Duty Retrieval Consultant (DRC) was tasked as the Medical Commander.
All teams arrived in a coordinated fashion over a 30 minute period. The initial triage sieve was done by road paramedic teams, utilising Smart Tags. Patients were grouped according to their triage category and brought into the Casualty Clearing Station (CCS). In total there were 30 casualties, with 2 declared dead on scene, and 2 deaths in transport. Another 10 patients had critical injuries.
Debrief & Learning Points…
Command & Control:
- Prompt declaration on scene of Major Incident.
- Ambulance Inspector arrived assuming the command role.
- Medical Commander (DRC) arrived later and became co-located with Ambulance Commander – intersecting roles help to bridge the gap between pre-hospital and hospital response.
- Noted that position of Medical Commander needs to be formally appointed by State HSFAC or Medical Controller.
- AMPLAN not activated for this incident – explanation ensued around line between a “bad day at the office” and the need to activate AMPLAN.
- “Whispir” notification to all members of our service gave an idea of availability of extra staff.
- Security threat neutralised in this scenario, and was not supposed to play a large role in the incident. Brief discussion occurred to be mindful that further threats may still exist.
- Some suggestions were made around improving visibility of medical teams with different tabards.
- Radio communications were all relayed through a central coordination point which for the purposes of the exercise functioned also functioned as the ACC.
- The need for common terminology was noted with terms such as “Casualty Clearing Station” being utilised so that all staff can have a mutual understanding.
- The importance of “sharing the mental model” was re-visited. The application of this to the more macro workings of a Major Incident was discussed along with the difficulties of disseminating the information in such a large group of staff, with multiple patients. The challenge is to have everyone working to the same “model.”
- The creation of the CCS and its designated areas all occurred organically. The ability to fully utilise the space and environment that you are in to create a CCS was discussed. Every incident will be different – control your environment as best you can.
- This was noted to be a very dynamic process and the importance of having ways to record and keep tally of your patients is paramount.
- Initial sieve done by paramedics out in the “hot zone” with the next stage of triage, “the sort,” completed back in the CCS. Sieve is based on mobility level/RR/HR, while the sort then utilises RR/GCS/SBP.
- The usefulness of ultrasound in higher level triage was also touched on.
- Treatment in the hot zone consisted of simple airway interventions, positioning and placement of IV cannulae.
- A number of life saving interventions were conducted in the CCS – chest decompression by needle and finger thoracostomy, tourniquets applied, LMAs inserted, blood and hypertonic saline were given.
- The potential for reallocation of medical teams/resources under the direction of the Medical Commander was explored.
- The range of methods available to transport patients from the “hot zone” was explored to reduce reliance on stretchers.
- The appointment of a “loading officer” during the exercise was a helpful point of contact for the control centre. It allowed a definite end point of which patients and teams were being transported to where.
- The importance of high level triage was discussed. This allows patients to get to the right place to begin with, thus alleviating the burden on retrieval services for subsequent transfers.
In a major incident, a range of documents from National/State level down to clinician level will guide our approach and importantly, normal tasking procedures remain in place (ie; all taskings via the ACC). An HEAS (Aeromedical) Incident Management Team (IMT) will be established to coordinate and provide advice on the aeromedical support to a major incident. Plans and broad awareness is well established, but regular training to ensure preparedness is crucial. This must also consider the psychological impact on staff equally to that of other aspects to enable a successful response (are they ready to respond?).
In NSW, medical retrieval teams have specific roles in the prehospital response to major incidents that expand upon their normal everyday role of advanced clinical treatment. These roles are written into NSW HEALTHPLAN and AMPLAN, both of which are undergoing revision in light of lessons learnt from recent terror attacks both locally and abroad.
Medical retrieval teams provide clinical leadership to the Casualty Clearing Station, adding a medical triage sort to the hot-zone paramedic triage sieve, and coordinating treatment of patients. In addition, the most senior doctor assumes responsibility for directing the priority of transport and ensuring an appropriate destination for each patient. Clinical information is communicated to the State Medical Controller and State HSFAC in the State Health EOC to facilitate the best possible system response by Health.