Prevention of Future Deaths reports · 2024

Yemisi Cielto-Opaleye

Regulation 28 report to prevent future deaths, reference 2024-0635, written 18 Nov 2024. A coroner writes one of these when an inquest reveals a risk that could cause further deaths unless something changes.

Date of report18 Nov 2024
Reference2024-0635
DeceasedYemisi Cielto-Opaleye
CoronerEdwin Buckett
Coroner areaInner North London
CategoryHospital Death (Clinical Procedures and medical management) related deaths · Alcohol, drug and medication related deaths · Mental Health related deaths
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:  Prevention of Future Deaths report 

Yemisi Cielto-Opaleye (died 13.12.2023) 

THIS REPORT IS BEING SENT TO: 

(1) 
Chief Executive 
North London Mental Health Partnership 
Partnership Headquarters 
4th Floor, East Wing 
St Pancras Hospital 
4 St Pancras Way 
London 
NW1 0PE 

(2) 
Chief Medical Officer 
North London Mental Health Partnership 
Partnership Headquarters 
4th Floor, East Wing 
St Pancras Hospital 
London 
NW1 0PE 

1 

CORONER 

I am:   Edwin Buckett 
           Assistant Coroner  
           Inner North London 
           St Pancras Coroner’s Court 
           Camley Street 
           London  N1C 4PP 

2 

CORONER’S LEGAL POWERS 

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

3 

INVESTIGATION and INQUEST 

1 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 On  the  21st  December  2023  Assistant  Coroner  Ian  Potter  began  an 
investigation into the death of Yemisi Cielto-Opaleye who died aged 47, 
on the 13th December 2023 at St Pancras Hospital, London, N1. 

The investigation concluded at the end of an inquest, with a jury which 
took  place  over  5  days  between  11th -  15th  November  2024.  This  was 
conducted by myself, Assistant Coroner Edwin Buckett. 

The jury made a determination that the deceased died within 3 hours of 
being  administered  an  Olanzapine  depot  injection  which  caused 
Olanzapine toxicity, whilst a psychiatric in-patient on Sapphire Ward, St 
Pancras Hospital, London N1. 

The  jury  returned  a  Narrative  Conclusion  which  found  that  neglect 
contributed to her cause of death. 

4 

CIRCUMSTANCES OF THE DEATH 

The circumstances of the death are set out in the Narrative Conclusion 
of the Jury which was as follows: 

inpatient  with 

“On  5th  April  2022  Yemisi  was  admitted  to  St  Pancras  Hospital  as  a 
treatment-resistant 
long 
psychiatric 
schizophrenia. On the 22nd June 2023 she was transferred to Sapphire 
Ward.  She  was  treated  with  a  wide  variety  of  psychiatric  medication 
administered both orally and by depot injection. 

standing 

Following  admission  to  Sapphire  Ward,  a  decision  was  made  by  the 
consultant  along  with  other  hospital  staff  to  introduce  Olanzapine  to 
Yemisi’s treatment. Yemisi was administered Olanzapine orally for 3-4 
days, falling below the recommended trial period advised before moving 
to  administering  by  depot  injection  and  was  therefore  inadequate.  As 
Olanzapine is a non-formulary drug for the Trust, additional requirements 
are in place to support prescribing decisions. The justification relied upon 
by  the  consultant  and  lead  pharmacist  for  prescribing  the  drug  was 
unsuitable as the drug does not meet the criteria outlined in Section 62 
of  the  Mental  Health  Act  of  being  a)  life-saving,  or  b)  reversible.  In 
addition, the requirement to seek a second opinion from an independent 
doctor  in  certain  circumstances  when  changing  medications  was  not 
fulfilled  as  the  first  depot  injection  was  administered  to  Yemisi  before 
approval  was  received  from  the  SOAD.  Owing  to  Yemisi’s  known  and 
documented history of refusing vital signs checks requiring participation, 
the prescribing decision took into account the expected difficulties with 
conducting  these  checks.  However,  there  was  no  robust  contingency 

2 

 
 
 
 
 
 
 
 
 
 
  
 plan for ensuring these checks took place, the plan itself was insufficient 
to accommodate Yemisi’s circumstances and went no further than what 
is mandated in the Olanzapine policy. 

Yemisi  received  a  first  Olanzapine  depot  injection  on  the  13th  of 
November,  where  she  also  did  not  comply  with  vital  signs  checks 
requiring  participation.  There  were  no  adverse  effects  noted  and  staff 
indicated  following  this  depot  injection  her  mental  state  improved 
somewhat.  Yemisi’s  non-compliance  with  vital  signs  checks  requiring 
participation  led  to  the  decision  being  made  that  both  depot  injections 
would be administered relying solely on assessing Respiratory Rate and 
Level  of  Consciousness,  departing  from  the  Trust’s  Olanzapine  depot 
policy. 

On  the  13th  of  December  2023,  the  plan  in  place  was  for  one  of  the 
nurses on Sapphire Ward that day who had completed the Olanzapine 
training  to  both  prepare  and  administer  the  injection,  and  as  per  the 
Olanzapine  policy  conduct  the  first  set  of  vital  signs  checks,  and  be 
available  for  the  duration  of  the  3  hour  observations  unless  this 
responsibility is delegated to an appropriately qualified member of staff. 
However this is not what transpired on the day.  

responsibility 

The 
for  preparing,  administering,  monitoring  and 
witnessing of these processes was unclear, and divided among multiple 
members of staff which did not allow for effective continuity resulting in 
inadequate levels of oversight. Yemisi did not consent to any of the staff 
members on Sapphire Ward that day administering the injection, and so 
a qualified member of staff from another ward was asked to come and 
assist.  They  did  not  witness  the  preparing  of  the  solution  but  were 
satisfied  that  the  dose  and  preparation  were  as  described.  This  nurse 
and the preparing nurse initially went to Yemisi’s room to conduct pre-
injection vital signs checks but those requiring participation were refused. 
The absence of a full set of observations should have been escalated to 
a doctor prior to administering the depot injection, but this was not done. 
At this stage there was also a missed opportunity to reiterate potential 
side effects of the drug or symptoms of post-injection syndrome to Yemisi 
that she may have been able to flag as concerns. One nurse was then 
asked  to  leave  the  room  and  therefore  there  was  a  failure  to  follow 
protocol  both  by  not  having  two  members  of  staff  present  during  the 
administration of the depot injection, and also that it was administered 
requiring 
despite 
participation not taking place.  

requisite  pre-injection  vital  signs  checks 

the 

3 

 
  
 
 
 Following  the  injection,  there  was  a  total  lack  of  clarity  around 
responsibility and delegation of Post-injection checks, where the Nurse 
in Charge failed to allocate tasks consistent with safe implementation of 
the  plan.  Communication  was  inadequate  and  no  staff  member  on 
Sapphire Ward was clear on their responsibility to conduct post-injection 
checks that day.  

Collectively there was sufficient understanding among staff on the ward 
of  the  risks  associated  with  Olanzapine  depot  injection,  and  the 
requirements for post-injection checks (regardless of whether they had 
completed the training). Despite an awareness of these risks, this failed 
to translate to adequate safety planning, management and coordination 
of staff responsibilities or action relating to Yemisi’s care.  

to 

Yemisi. 

attention 

for  conducting 

basic  medical 

As  a  result,  none  of  the  vital  signs  checks  stipulated  in  the  Trust’s 
Olanzapine  policy  were  carried  out,  representing  a  gross  failure  to 
Relevant 
provide 
documentation/templates  for  record  keeping  do  not  provide  clear 
accountability 
these  checks.  The  Trust’s  own 
documentation/templates for Olanzapine monitoring do not allow for the 
total  number  of  checks  stipulated  (ie.  at  90  minutes).  The  reasoning 
given  for  not  completing  some  of  the  post-injection  checks  included  a 
number of incidents on the ward that diverted staff resource – there was 
a  failure  to  escalate  high  acuity  and  get  additional  support.  The  only 
check  conducted  was  a  General  Observations  check,  not  a  post- 
Olanzapine injection check, at 15:30, an hour after administration. This 
check only involved visual observations from outside Yemisi’s door, and 
could  not  have  been  sufficient  to  establish  a  patient’s  level  of 
consciousness. 

Yemisi was discovered lying face down on the floor in her room at around 
17:20 by the nurse in charge who sounded the alarm and called for help 
from other staff. Multiple staff began attempts to resuscitate her including 
CPR/chest compressions and establishing whether the defibrillator could 
be used. An ambulance was called, and paramedics arrived at Yemisi’s 
room at 17:40. No pulse or ‘shockable rhythm’ was detected by staff or 
defibrillators  from  the  point  she  was  discovered.  London  Ambulance 
Service continued attempts to resuscitate her but pronounced life extinct 
at 18:45.  

4 

 
 
 
 
  
 
 Yemisi died on the 13th December 2023 as a result of the toxic effects of 
the  Olanzapine  injection  administered  to  her  that  day  and  neglect 
contributed to her cause of death.”  

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 will occur 
unless  action  is  taken.  In  the  circumstances,  it  is  my  statutory  duty  to 
report to you. 

The MATTERS OF CONCERN are as follows.  

Evidence was given that: 

(1) Olanzapine Depot injections have a known risk of Post Injection 
Syndrome which can lead to death. Although the risk is rare, the 
Trust was aware of 2 other instances of Post Injection Syndrome 
following the administration of  some 10 Olanzapine injections in 
the recent past, with both individuals surviving because of early 
intervention by medical staff. 

(2) The  importance  of  timely  observations  is  crucial  to  preventing 
Post Injection Syndrome and preventing death in the event of an 
adverse reaction to the drug. 

(3) In order to administer an Olanzapine depot, a prescribing doctor 
must seek approval from a Lead Pharmacist in the Trust because 
the medication is a “non-formulary” medicine. 

it 

(4) The trial period for administering oral medication to a patient for 
whom 
is 
is  proposed  should  have  a  depot 
approximately  2  weeks,  whereas  Yemisi  only  took  Olanzapine 
tablets  for  3-4  days  before  having  her  first  Olazapine  depot 
injection.  Therefore,  she  took  her oral medical  for  less  than  the 
recommended period. 

injection 

(5) The requirement to obtain a second opinion from an independent 
doctor (SOAD) when changing medication did not happen when 
Yemisi was administered her first Olanzapine depot injection on 
13th November 2023.  

(6) In a busy psychiatric in-patient ward, staff can become distracted 
by having to tend to other patients, urgently, when events occur 
such as unexpected new patient admissions and disturbances. 

5 

 
 
 
 
 
 
 
 
 
 
 
  
 
 
 (7) Yemisi  had  a  long  history  of  refusing  to  take  medication  and 

refusing vital signs checks as a psychiatric in-patient. 

I am concerned that: 

(a) The risk of death from the use of Olanzapine depot injection needs 
to  be  made  clear  to  patients  who  are  going  to  be  given  that 
injection. Although it is very small risk, the fact that the risk can be 
largely eradicated by vital signs checks at intervals within the  3-
hour period with early medical intervention, the risk needs to be 
stated  to,  and  understood  by,  patients  or  those  who  represent 
their interests, before such a depot injection is given; 

(b) In  a  psychiatric  in-patient  setting,  there  are  many  demands  on 
staff  who  can  become  distracted  from  their  expected  duties. 
Unless there is a suitably qualified medical member of staff whose 
sole duty it is to remain in the company of a patient, who has had 
an Olanzapine depot injection at all times during the 3 hour post-
injection observation period, there is a risk that vital signs checks 
will  be  missed  and  that  Post  Injection  Syndrome  will  not  be 
detected early enough if it occurs; 

(c) There is a risk that approval from a Lead Pharmacist to initiate a 
non-formulary medicine such as an Olanzapine depot can occur 
without  the  Pharmacist  knowing  whether  a  SOAD  has  been 
obtained in relation to that medication and that patient; 

(d) In cases where psychiatric in-patients are known to have a history 
of refusing vital signs checks, careful consideration and scrutiny 
should be given as to whether an Olanzapine depot injection is a 
suitable  medication  for  such  patients,  especially  in  view  of  the 
crucial post-injection monitoring requirements.   

6 

ACTION SHOULD BE TAKEN 

In  my  opinion,  action  should  be  taken  to  prevent  future  deaths  and  I 
believe that 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 17th January 2025.  I, the coroner, may extend 
the period. 

6 

 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 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 following. 

•  HHJ Alexia Curran, the Chief Coroner of England & Wales 

• 

, the sister of Yemisi Cielto-Opaleye. 

I am under a duty to send the Chief Coroner a copy of your response.  

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 by the Chief Coroner. 

9 

DATE     18.11.2024 
SIGNED BY ASSISTANT CORONER 
Edwin Buckett 

7

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 North London NHS (PDF)
Trust Headquarters 

4th Floor, East Wing 
St Pancras Hospital 
 4 St Pancras Way  
London NW1 0PE  

Email: 

. 

Private and Confidential 
Assistant Coroner Edwin Buckett 
Inner North London 
St Pancras Coroner’s Court 
Camley St 
London N1C 4PP 

17th January 2025 

Dear Coroner Buckett 

Re Inquest touching the death of Yemisi Cielto Opaleye 

I am writing following the inquest for Yemisi Cielto Opaleye which concluded on 15th 
November 2024 and following which you issued a Prevention of Future Deaths report to the 
Trust.  Ms Cielto Opaleye died following administration of Olanzapine depot injection on one 
of the Trust’s inpatient wards.  The matters of concern raised in your report were as follows: 

(a) The risk of death from the use of Olanzapine depot injection needs to be made clear to 
patients who are going to be given that injection. Although it is very small risk, the fact that 
the risk can be largely eradicated by vital signs checks at intervals within the 3- hour period 
with early medical intervention, the risk needs to be stated to, and understood by, patients or 
those who represent their interests, before such a depot injection is given;  
(b) In a psychiatric in-patient setting, there are many demands on staff who can become 
distracted from their expected duties. Unless there is a suitably qualified medical member of 
staff whose sole duty it is to remain in the company of a patient, who has had an Olanzapine 
depot injection at all times during the 3 hour postinjection observation period, there is a risk 
that vital signs checks will be missed and that Post Injection Syndrome will not be detected 
early enough if it occurs;  
(c) There is a risk that approval from a Lead Pharmacist to initiate a non-formulary medicine 
such as an Olanzapine depot can occur without the Pharmacist knowing whether a SOAD 
has been obtained in relation to that medication and that patient;  
(d) In cases where psychiatric in-patients are known to have a history of refusing vital signs 
checks, careful consideration and scrutiny should be given as to whether an Olanzapine 
depot injection is a suitable medication for such patients, especially in view of the crucial 
post-injection monitoring requirements. 

Better Mental Health. Better Lives. Better Communities. 

Chair: 
Chief Executive: 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Firstly we wish to express our sincere condolences to the family and friends of Ms Cielto-
Opaleye.  

As stated in our letter to you of 17th October 2024, we accept, as you outline in your report, 
that the failure to carry out the observations of Ms Cielto-Opaleye’s vital signs, which should 
have been carried out in accordance with the Trust’s Olanzapine Depot Guidelines dated 
February 2021, at 14.48 hours (20 mins); 15:08 hours (40 mins); 15:28 hours (60 mins); 
15:58 hours (90) mins and 16:28 hours (120 mins) represents a failure on the part of the 
Trust’s staff who were responsible for carrying out those observations. 

The Trust would like to repeat its apology as stated in that letter and apologise unreservedly 
to the family of Ms Cielto-Opaleye for these failures and accept that in all likelihood they 
contributed to Ms Cielto-Opaleye’s death on Sapphire ward on the 13th of December 2023. 

In relation to your report and addressing each of your concerns: 

Matter of concern 1: The risk of death from the use of Olanzapine depot injection needs to 
be made clear to patients who are going to be given that injection. Although it is very small 
risk, the fact that the risk can be largely eradicated by vital signs checks at intervals within 
the 3- hour period with early medical intervention, the risk needs to be stated to, and 
understood by, patients or those who represent their interests, before such a depot injection 
is given. 

Trust Response: As discussed in court, our olanzapine depot prescribing policy was 
reviewed and re written in March 2024. Section 9.2.1 of that policy states: 

If olanzapine depot is considered, the team must provide medication counselling for 
olanzapine depot to patient. The information must include advice about the three-
hour post administration observations. The patient must be given a copy of the 
olanzapine depot alert card in appendix 1. The key messages to discuss with the 
patient before administration are: 
• 
• 

 Olanzapine depot carries a small risk of post-injection syndrome.  
 Most symptoms appear within one hour following injection and resolve within 24-
72 hours. 
 A patient information leaflet can be obtained from the Choice and Medication link 
on the Trust intranet (» Printable leaflets (choiceandmedication.org)) 

• 

•     The patient must be advised not to leave prior to completion of the three hour  
observation period. If the patient indicates he/she will leave prior to end of the three-
hour period, the depot must not be administered and the medical team advised as 
soon as possible. 

We acknowledge that the small risk of death from post injection syndrome is not explicitly 
highlighted within this literature and this will be reviewed within the policy. 

Matter of concern 2:  In a psychiatric in-patient setting, there are many demands on staff 
who can become distracted from their expected duties. Unless there is a suitably qualified 
medical member of staff whose sole duty it is to remain in the company of a patient, who has 
had an Olanzapine depot injection at all times during the 3 hour post injection observation  

Better Mental Health. Better Lives. Better Communities. 

Chair: 
Chief Executive: 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 period, there is a risk that vital signs checks will be missed and that Post Injection Syndrome 
will not be detected early enough if it occurs. 

Trust Response: The olanzapine depot policy dated March 2024 section 10.1.2 states that 
‘the nurse must be available for the duration of the three-hour post-administration 
observation.’ Section 10.1.7 states that ‘An appropriately trained and /or professional 
member of staff, other than a nurse, can take the subsequent clinical observations if 
delegated by the administering nurse’. 
We agree that this policy will be reviewed and in instances of olanzapine depot 
administration in an inpatient setting an extra qualified member of staff will be booked on 
shift with the sole responsibility of preparing, administering and delivering post administration 
observations of the patient for the three hour period. 

Matter of concern 3: There is a risk that approval from a Lead Pharmacist to initiate a non-
formulary medicine such as an Olanzapine depot can occur without the Pharmacist knowing 
whether a SOAD has been obtained in relation to that medication and that patient. 

Trust Response: The role of the pharmacist is not referenced within the Mental Health Act 
1983. In the case of Yemisi Cielto-Opaleye, a valid T3 form and SOAD approval was in 
place for the administration of the depot on the 13th December 2023. On the date of the first 
olanzapine depot administration on the 13th November 2023 a S62 ‘Urgent Treatment Form’ 
was in place dated 10th November 2023 and treatment was administered legally under 
clause b, that is, ‘(not being irreversible) immediately necessary to prevent a serious 
deterioration in their condition’.  
In terms of the irreversibility, the White Paper that preceded the 1983 Act defined it as 
“treatments which necessitate the removal or destruction of brain tissue or are designed to 
effect irreversible change in cerebral or bodily function” and at the 1982 special standing 
committee on the bill the under-secretary of state gave the removal of a brain tumour or a 
diseased thyroid as examples. 

Matter of concern 4: In cases where psychiatric in-patients are known to have a history of 
refusing vital signs checks, careful consideration and scrutiny should be given as to whether 
an Olanzapine depot injection is a suitable medication for such patients, especially in view of 
the crucial post-injection monitoring requirements. 

Trust Response: We accept that this is reasonable and in the case of patients known to 
refuse vital signs that alternatives to olanzapine depot should be thoroughly explored. 

I hope that this response provides the necessary assurance.  Please contact me if you have 
any queries. 

Yours sincerely 

Chief Medical Officer 

Better Mental Health. Better Lives. Better Communities. 

Chair: 
Chief Executive:

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