Time taken to answer the first call
16. Ambulance Services in England use a Computer Assisted Dispatch system (CAD). The CAD is the system used to record all data related to 999 and urgent requests for ambulance assistance from the Trust. It is primarily used by Emergency Operations Centre (EOC) staff to assess, prioritise and, if necessary, dispatch ambulance crews to 999 calls.
17. NHS England’s ambulance standards involve using a set of pre-triage questions to identify those patients in need of the fastest response. There are four categories of call. Category 1 calls, from people with life-threatening illnesses or injuries, are the most serious.
18. Call pickup for 999 ambulance services is expected to be as fast as possible. Our adviser explained there are no current national standards, but we understand most ambulance services aim to answer within five seconds. It is important to note this does not take into account time for BT to answer the call and redirect it to the correct emergency service, i.e. police, fire, ambulance in the correct area.
19. The Trust’s complaint response explained BT connected the call to the Trust at 18:56:59 and it answered 72 seconds later. The complaint response acknowledged this was outside the expected level.
20. NHS England’s commissioning framework says ambulance services should ensure they answers all 999 calls promptly. AACE’s data shows in March 2022, call pickup times significantly rose nationally to a mean of 42 seconds, with 90% of calls picked up within 171 seconds. The call pickup time here was significantly higher than the mean. The Trust may wish to consider this as part of its Clinical Safety Plan.
21. However national standards for 999 services focus on how long it takes an ambulance to arrive on scene - not call pickup, as outlined in the NHS Standard contract and NHS ARP Review. In line with this, ambulances should respond to category 1 calls in seven minutes on average, and respond to 90% of category 1 calls in 15 minutes.
22. Additionally, part of the response times from call to arrival on scene can include time from when BT connected the call to the Trust. This is reflected on NHS England’s AmbSYS which says for category 1, if the call is not categorised within 30 seconds, then the ‘clock starts’ for ambulance response target starts at 30 seconds from BT’s attempt to connect (if it is not already connected).
23. The first call connected to the Trust at 18:56:59 so the clock started 30 seconds later, at 18:57:29. This is because the call was not categorised until 18:58:41 according to the Trust’s response.
24. In this case, the first ambulance arrived at 19:10:42 so using the national measure, the total response time was 13 minutes 13 seconds. This was within the 90% response target of 15 minutes for category 1.
25. While the Trust could potentially have had an ambulance on scene up to a minute earlier if the call pickup time had been shorter, it did meet the national standards. This is why we have not identified a failing here.
Worsening advice in the second call
26. The second call was clearly challenging as the caller was shouting across the road to get answers for the call handler. The caller did not seem able to go over to where the patient is, but confirmed he was unconscious.
27. Our Principles say public bodies must act in accordance with recognised quality standards, established good practice or both, for example about clinical care. The established practice when handling a call like this one is to provide worsening advice. This informs the caller what to do if they experience any deterioration.
28. The call handler did double check that someone was on a call to the ambulance service but did not give worsening advice. The Trust response confirms this, and that worsening advice should have been given. We consider there was a failing here.
‘Ad hoc’ questions in the third call
29. Our adviser explained the call handler will be presented with relevant questions to ask with notes at the side of the screen for clarification to assist getting the correct answer. Using ad hoc questions may result in an answer being recorded that could change the ambulance response (such as downgrading the call from category 1).
30. The Trust’s response also confirms the call handler asked too many ad hoc questions. We consider this a failing, as the call was not handled in the way it should have been.
31. The call handler seemed task focused rather than appreciating the relevance of everything the caller was saying. This is based on the fact it took two minutes from the start of the call to come back to the fact the caller had said the patient was not breathing. Then the call handler jumped to fitting rather than not breathing.
32. It took the call handler in this call four minutes to give CPR instructions despite the caller saying immediately the patient was not breathing. The call handler asked the caller to stop CPR before starting to give instructions on how to perform it less than a minute later.
Impact
33. Given the failings identified above we have considered the impact of what happened. Miss J says the Trust’s actions led to a delay in starting CPR which significantly reduced her father’s chances of survival.
34. Resuscitation Council UK basic life support guidance and the NICE CKS on cardiac arrest both set out that CPR should be started immediately where possible. The CKS says immediate CPR can double or quadruple survival from out of hospital cardiac arrest, and defibrillation within three to five minutes of collapse can produce survival rates between 50 and 70%.
35. Defibrillation should be used if available. If there are any Community Public Access Defibrillators (CPADs) in the area, and they are recorded centrally, the system will suggest these to direct bystanders to. Sadly, there were no CPADs in the area Mr J was in.
36. Mr J had already been allocated the highest level of response and an ambulance was already on route, the ad hoc questions in the third call did not delay an ambulance to the scene. The caller stated CPR was already being given when this call was made.
37. The call handler asked the people giving CPR to stop for less than a minute before starting to give instructions. Listening to the call, it is not clear if CPR did stop in that period.
38. Overall, we are therefore unable to say the care Mr J received was significantly affected by the Trust’s handling of the calls following his collapse.
39. Sadly, data from the OHCAO Registry shows more than 11 in 12 patients (92.2%) do not survive to 30 days after experiencing an out-of-hospital cardiac arrest.
40. This does not detract from the concern Miss J experienced from learning those calls were not handled in the way they should have been. We are very sorry for her family’s loss and recognise the Trust’s call handling added to their bereavement. We are making recommendations on that basis.