Prevention of Future Deaths reports · 2024

Stefan Walker

Regulation 28 report to prevent future deaths, reference 2024-0319, written 17 Jun 2024. A coroner writes one of these when an inquest reveals a risk that could cause further deaths unless something changes.

Date of report17 Jun 2024
Reference2024-0319
DeceasedStefan Walker
CoronerEdward Ramsay
Coroner areaSwansea and Neath Port Talbot
CategoryAlcohol, drug and medication related deaths · Wales prevention of future deaths reports (2019 onwards) · Emergency services related deaths (2019 onwards)
Sourcejudiciary.uk record · original PDF
Responses published1

The report

Text extracted from the PDF text layer. Reproduced verbatim, including the scan's own layout.

REGULATION 28 REPORT TO PREVENT FUTURE DEATHS 

THIS REPORT IS BEING SENT TO: 

1. 

, CHIEF EXECUTIVE, WELSH AMBULANCE SERVICES 

UNIVERSITY NHS TRUST  

1 

CORONER 

I am EDWARD RAMSAY, His Majesty’s Assistant Coroner for the coroner area of 
SWANSEA AND NEATH PORT TALBOT.  

2 

CORONER’S LEGAL POWERS 

I make this report under paragraph 7, Schedule 5, of the Coroners and Justice Act 2009 
and Regulations 28 and 29 of the Coroners (Investigations) Regulations 2013. 

3 

INVESTIGATION and INQUEST 

On  7  JULY  2020  the  Senior  Coroner  commenced  an  investigation  into  the  death  of 
STEFAN WALKER aged 40 (hereafter “STEFAN”), who died on 29 June 2020.  

The  investigation concluded at the end of the inquest held  between  20th and  28th  May 
2024.  

The said investigation was one to which the enhanced investigative obligation, under Article 
2 of the European Convention on Human Rights, applied.  

The conclusion of the inquest jury was that STEFAN’S death was ‘Drug related’ – the 
medical cause of death being ‘buprenorphine and flualprazolam intoxication, and cardiac 
enlargement’  and that,  inter alia, ‘Stefan died in his bedspace at Cefn Coed Hospital, 
Swansea on 29 June 2020 sometime between 1520 and 1545’. 

4 

CIRCUMSTANCES OF THE DEATH 

(1)  At the time of his death STEFAN was a detained patient under the Mental Health Act 

1983 and receiving in-patient psychiatric treatment on Fendrod Ward on account of 
his diagnosis of polysubstance misuse, psychosis, Emotionally Unstable Personality 
Disorder, and ADHD.  

(2)  The evidence that I and the jury heard was to the effect that on both 28th and 29th 

June 2020 there were concerns that STEFAN had consumed illicit substances and 
was displaying symptoms of being physically unwell (overly sedated and drowsy, 
slurring his speech and tripping over his feet, unable to keep his eyes open and 
perspiring profusely). He disclosed to staff that he had taken ‘street diazepam’.  

(3)  In the afternoon of 29 June 2020 he was found unresponsive in his room and 
attempts were made by nursing staff and paramedics to resuscitate him. The 
evidence and the jury heard was that STEFAN was displaying no signs of life when 
he was found.  

(4)  Naloxone and Flumazenil were both administered by a junior doctor and the ward 

pharmacist with the assistance of the paramedics when they arrived – the Flumazenil 
only because it was kept on the ward. It was not carried by the paramedics, and I was 
told that it is not carried by paramedics.  

(5)  Toxicology after his death revealed the presence of both buprenorphine (strong 

opioid analgesic) and flualprazolam (novel designer benzodiazepine).  

(6)  Flumazenil is a potential antagonist in relation to the novel designer benzodiazepine.  

 
 
 
 
 
 
 
 
 
 
 
 5 

CORONER’S CONCERNS 

During the course of the inquest the evidence revealed matters giving rise to concern. In 
my  opinion  there  is  a  risk  that  future  deaths  could  occur  unless  action  is  taken.  In  the 
circumstances it is my statutory duty to report to you. 

The MATTERS OF CONCERN are as follows.  – 

(1)  I  was  told  that  paramedics  and  ambulance  crew  do  not  carry 
flumazenil  (but  often  do  carry  naloxone).  The  availability  of  flumazenil 
was  happenstance  in  this  case  because  STEFAN  was  on  an  acute 
psychiatric ward where the said antagonist was being kept and could be 
prescribed by the ward pharmacist and administered by the doctors (with 
the support paramedics when they arrived).  

(2)  I am concerned that there  may be other acute circumstances when the 
use of this particular antagonist (flumazenil) could make a difference (say 
in  the  case  of  the  collapse  of  person  on  the  street  or  otherwise  in  the 
community) but will not be available since paramedics do not it.  

(3)  I and the jury heard no evidence as to why naloxone is carried, but other 

antagonists (such as flumazenil) not.  

6 

ACTION SHOULD BE TAKEN 

In my opinion action should be taken to prevent future deaths and I believe you 
AND/OR your organisation have the power to take such action. 

7 

YOUR RESPONSE 

You are under a duty to respond to this report within 56 days of the date of this report, 
namely by 12 AUGUST 2024.  

I, the coroner, may extend the period. 

Your response must contain details of action taken or proposed to be taken, setting out 
the timetable for action. Otherwise, you must explain why no action is proposed. 

8 

COPIES and PUBLICATION 

I have sent a copy of my report to the Chief Coroner and to the following Interested 
Persons  

(1)  STEFAN’S Family 
(2)  Swansea Bay University Health Board 
(3)  City and Council of Swansea 

I am also under a duty to send a copy of your response to the Chief Coroner and all 
interested persons who in my opinion should receive it. I may also send a copy of your 
response to any other person who I believe may find it useful or of interest. The Chief 
Coroner may publish either or both in a complete or redacted or summary form. He may 
send a copy of this report to any person who he believes may find it useful or of interest. 
You may make representations to me, the coroner, at the time of your response, about the 
release or the publication of your response. 

 
 
 
 
 
 
 
 
 
 
 
 
 
 9 

17 June 2024 

EDWARD RAMSAY  

HM ASSISTANT CORONER FOR SWANSEA AND NEATH PORT TALBOT

Responses

1 response published against this report on judiciary.uk. A response is a body's written reply to the coroner's concerns; publication is at the discretion of the Chief Coroner's office, so an absent response does not mean nobody replied.

Response from Welsh Ambulance Service (PDF)
Cadeirydd 
Chair: 

Prif Weithredwr 
Chief Executive:

Swyddfa'r Prif Weithredwr a’r Cadeirydd  

Chair and Chief Executive’s Office 

Our ref: 
Your ref: 

17 July 2024 

FAO: Edward Ramsay 
Assistant coroner for Swansea and Neath Port Talbot 
By email only to: 

Dear Mr Ramsay, 

Re: Inquest into the death of Stefan Barrie Walker 

I am writing in response to the Regulation 28 Report to Prevent Future Deaths, that you issued on 
17 June 2024. On receipt, the report was passed to our Associate Medical Director for Emergency 
Care  (who  is  a  Consultant  in  anaesthesia,  intensive  care  medicine  &  pre-hospital  emergency 
medicine) and our Executive Director of Paramedicine. Advice and consultation with  the National 
Ambulance Service Medical Directors Group (NASMeD) has also been sought in order to give your 
report our fullest consideration. 

As you are aware, flumazenil is a drug which acts to reverse the effects of benzodiazepine drugs 
(such as diazepam, midazolam, and similar agents).  The drug ‘naloxone’ to which you also refer is a 
drug which reverses the effects of opioid drugs (such as morphine, heroin, fentanyl, etc). 

Naloxone  is  routinely  carried  by  ambulance  crews  and  can  be  administered  by  paramedics  & 
emergency medical technicians.  It is also carried by several UK police forces, and issued to members 
of the public who may come into contact with patients who are experiencing the effects of opioid 
overdose,  as  part  of  a  wider  strategy  to  reduce  harm.    Naloxone  in  this  context  has  an excellent 
safety profile and there is extensive experience of use across the world. 

Mae’r Ymddiriedolaeth yn croesawu gohebiaeth yn y Gymraeg 
neu’r Saesneg, ac na fydd gohebu yn Gymraeg yn arwain at oedi 

The Trust welcomes correspondence in Welsh or English, and 
that corresponding in Welsh will not lead to a delay 

www.ambulance.wales.nhs.uk 

Pencadlys Rhanbarthol 
Ambiwlans  

Regional Ambulance 
Headquarters 

Beacon House 
William Brown Close  
Llantarnam, Cwmbran 
NP44 3AB 

Ffôn/Tel  

 
 
 
 
 
 
 
 
 
 
 
 
 
 There are very robust clinical reasons as to why flumazenil cannot and should not be considered in 
the same way.  While flumazenil does reverse the effects of benzodiazepines, its use for overdosage 
of  benzodiazepines  (and  in  particular  overdose  in  the  context  of  multiple  drugs  including 
benzodiazepines) is controversial and potentially very hazardous.  

Flumazenil  has  multiple  serious  side  effects  including  life-threatening  heart  rhythm  disturbances, 
and seizure activity.  It also has drug interactions with many commonly used medications.  The use 
of  flumazenil  is  contraindicated  in  patients  with  seizures  who  are  normally  controlled  with 
benzodiazepines  &  it  must  be  used  with  great  caution  in  patients  who  have  prolonged  use  of 
benzodiazepines for any reason. 

The UK licenced indication for flumazenil is the “reversal of sedative effects of benzodiazepines in 
anaesthesia and clinical procedures”.  Any use in other circumstances would be outside of the scope 
of the UK product licence and would not be something we could legally authorise for paramedic 
use. 

The  view  of  our  Associate  Medical  Director  for  Emergency  Care  is  that  flumazenil  should  not  be 
carried for use in the context of suspected benzodiazepine overdose, and that supportive treatment 
should be provided instead.  This advice was echoed by his colleagues at NASMeD.   

This is also the advice of the National Poisons Information Service (NPIS) who published guidance 
suggesting  that  flumazenil  should  be  used  only  to  “avoid  mechanical  ventilation  in  patients  who 
developed  reduced  ventilation  and  coma  due  to  GABA-A  agonists”.    (GABA-A  receptors  are  the 
mechanism through which benzodiazepines have their effect).  They go on to explicitly state that 
flumazenil “SHOULD NOT be used as a diagnostic test for benzodiazepine poisoning” or where the 
risk of convulsions is high, such as patients who have prolonged exposure to benzodiazepines over 
time, or where other potentially pro-convulsant drugs may have been taken (for example tricyclic 
antidepressant drugs). 

To address your specific matters of concern from the report: 
“I  was  told  that  paramedics  and  ambulance  crew  do  not  carry  flumazenil  (but  often  do  carry 
naloxone). The availability of flumazenil was happenstance in this case because STEFAN was on an 
acute psychiatric ward where the said antagonist was being kept and could be prescribed by the ward 
pharmacist and administered by the doctors (with the support paramedics when they arrived). “ 

Some of our Welsh Ambulance Service paramedics do carry flumazenil and may utilise it under a 
patient group directive (PGD) authority.  But this use is specifically only for the emergency reversal 
of benzodiazepines which they have administered, so this only applies to paramedics who are trained 
and authorised to use advanced sedative pain-relieving drug options.  These paramedics however 
can (and should) only use flumazenil in this specific context, and the PGD is explicit that it should 
not be used in the context of other suspected benzodiazepine overdose for the reasons outlined 
above. 

“I am concerned that there may be other acute circumstances when the use of this particular antagonist 
(flumazenil) could make a difference (say in the case of the collapse of person on the street or otherwise 
in the community) but will not be available since paramedics do not it. “ 

  
 
 
 
 
 
 
 
 Hopefully the explanation I have provided above will reassure  you that flumazenil  should not be 
used in this context based on all current clinical guidelines.   Ambulance personnel are trained in 
advanced airway techniques and other supportive care strategies which are more appropriate for 
the management of benzodiazepine overdose. 

“I  and  the  jury  heard  no  evidence  as  to  why  naloxone  is  carried,  but  other  antagonists  (such  as 
flumazenil) not.”  

Again,  hopefully  my  explanation  above  will  provide  you  with  sufficient  reassurance  around  this 
question.  Naloxone has a long established and proven safety record and can and should be made 
widely available for the management of potential opioid overdose.  Flumazenil by contrast would be 
unsafe for deployment in this manner and against all current published clinical guidelines. 

In closing, I hope this letter provides you with the information you require. However, if you have any 
further questions please do not hesitate to contact me, this can be done by writing to the address 
shown on this letter or by email to 

While writing I would like to offer my sincere condolences to Mr Walker’s family on their sad loss.  

Yours sincerely 

Chief Executive

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