Source · Prevention of Future Deaths

Colin Brooks

Ref: 2025-0276 Date: 5 Jun 2025 Coroner: Simon Brenchley Area: Birmingham and Solihull Responses identified: 1 / 1 View PDF

Insufficient on-call perfusionist staffing during simultaneous emergency surgeries, not meeting safety guidelines, risks delays in identifying critical issues during cardiopulmonary bypass procedures.

Date 5 Jun 2025
56-day deadline 31 Jul 2025
Responses identified 1 of 1
Hospital Death (Clinical Procedures and medical management) related deaths

Coroner's concerns

AI summary
Insufficient on-call perfusionist staffing during simultaneous emergency surgeries, not meeting safety guidelines, risks delays in identifying critical issues during cardiopulmonary bypass procedures.
View full coroner's concerns
1. During the inquest I heard that the emergency surgery on Mr Brooks was taking place out of hours at the same time as another emergency procedure, a lung transplant operation, was taking place in another theatre. The only two on call perfusionists on site were the perfusionist operating the cardiopulmonary bypass machine (“CPB”) in Mr Brooks’s surgery (Perfusionist 2) and the perfusionist involved in the lung transplant operation (Perfusionist
3).

2. The Safety Requirements published by the Society of Clinical Perfusion Scientists in 2023 advises that : “The minimum safe number of accredited clinical perfusion scientists to cover operating theatres for any CPB procedure is deemed as N+1, where N equals the number of operating theatres in use at any given time on a single site. The plus one shall be available onsite”

3. One of the factors that was, in my view, likely to have contributed to the delay in Perfusionist 2, who was relatively junior in terms of experience, being able to identify the absence of the bridge clamp as the cause Mr Brook’s hypotension, was that Perfusionist 2 was limited in being able to obtain advice from another perfusionist.

4. Contrary to the “N+1” advice, there was no other available perfusionist on site, (apart from Perfusionist 3), whom Perfusionist 2 could call in to theatre quickly to help with troubleshooting. Perfusionist 3 was unable to leave the theatre next door and so messages had to be exchanged between the two perfusionists which led to the issue being identified.

5. I heard that whilst the “N+1” advice is followed by the UHB Trust during normal working hours, it is not possible for this to be followed out of hours in circumstances where two operating theatres are in operation at the same time owing to resourcing/funding issues and problems with the availability of perfusionists generally, one of the factors being the significant effect staffing this requirement out of hours would have on reducing the waiting lists for surgery during working hours.

6. Although it was a rare event that two emergency procedures requiring a bypass machine were taking place at the same time out of hours, nonetheless there is a risk that future deaths could occur in similar circumstances if action is not taken to address resourcing and the availability of perfusionists.

Responses

1 respondent
Department of Health and Social Care Central Government
28 Aug 2025 PDF
Action Taken

The Cardiac Surgery and Perfusionist Teams at University Hospitals Birmingham have implemented a peer-reviewed perfusion checklist, now embedded into routine practice for all cardiopulmonary bypass procedures. Additionally, they assessed the need for more centrifugal pumps. (AI summary)

View full response
Dear Mr Brenchley,

Thank you for the Regulation 28 report of 29 June 2025 sent to the Secretary of State for Health and Social Care about the death of Colin Charles Brooks. I am replying as the Minister with responsibility for Secondary Care.

Firstly, I would like to say how saddened I was to read of the circumstances of Mr Brooks’ death and I offer my sincere condolences to his family and loved ones. The circumstances your report describes are concerning and I am grateful to you for bringing these matters to my attention. Please accept my sincere apologies for the delay in responding to this matter.

The report raises concerns over an insufficient number of on-call perfusionists when Mr Brooks’ emergency surgery took place. The out of hours surgery took place concurrently with an emergency lung transplant, with only two on-call perfusionists available on site. This fell short of the 2023 Society of Clinical Perfusion Scientists’ guidance requiring a minimum of N+1 perfusionists to ensure safe cover for procedures requiring a cardiopulmonary bypass machine. It also found that Perfusionist 2, who was relatively junior, was unable to access immediate support when trying to identify the cause of Mr Brooks’ hypotension, as the only other perfusionist was engaged in the other theatre. The Trust does follow N+1 during normal hours however they have stated resource constraints prevented this being met out of hours and while, as you noted, it is rare for two emergency operations requiring cardiopulmonary bypass machines to occur simultaneously out of hours, it is clear it can happen.

In preparing this response, my officials have made enquiries with NHS England to ensure we adequately address your concerns.

I have carefully considered the situation. Individual NHS Trusts and other employers are responsible for determining staffing levels and workforce composition. They are best placed to understand their services and the needs of their patients in order to deliver safe and effective care. I would expect University Hospitals Birmingham NHS Foundation Trust and all other NHS Trusts to ensure that their staffing arrangements, including weekend and overnight cover, are appropriate following the tragic death of Mr Brooks.

Trusts already have a duty through the Health and Social Care Act 2008 to regularly review the number of staff and range of skills needed to safely meet the needs of people using their services. Mr Brooks’ case was reviewed in a Mortality and Morbidity meeting, where shared learning was cascaded across the surgical team. Following this, both the Cardiac Surgery and Perfusionist Teams at University Hospitals Birmingham confirmed they have implemented several safety actions in response. A peer-reviewed perfusion checklist has been introduced, which is now embedded into routine practice for all cardiopulmonary bypass procedures. Additionally, they assessed the need for more centrifugal pumps, alongside other cardiac measures taken by the perfusionist team, to make sure this doesn’t happen again. In our 10 Year Health Plan, we committed to publishing a new 10 Year Workforce Plan later this year. This will ensure the NHS has the right people in the right places to deliver the best care for patients. I hope this response is helpful. Thank you for bringing these concerns to my attention.

Report sections

Investigation and inquest
On 23 September 2024 I commenced an investigation into the death of Colin Charles BROOKS. The investigation concluded at the end of the inquest on 29th May 2025. The conclusion of the inquest was that; The deceased died as a result of a hypoxic ischaemic brain injury after blood flow to his brain was compromised during emergency cardiac surgery when there was a delay in the reapplication of a bridge clamp to the circuit of a cardiopulmonary bypass machine.
Circumstances of the death
On 7th May 2024 at the Queen Elizabeth Hospital in Birmingham, Mr Brooks underwent complex cardiac surgery involving the replacement of his aortic valve, aortic root and ascending aorta as well as coronary artery bypass grafts. After the initial surgery was completed, whilst he was still being monitored in theatre, it was noted that he was losing blood so it became necessary for surgeons to re-open his chest to investigate and deal with the source of the bleeding. During the efforts to deal with the bleeding, the left coronary button was injured necessitating the emergency reinstitution of cardiopulmonary bypass at 2137 in order to repair this. A clamp on the bridge between the arterial and venous lines of the cardiopulmonary bypass machine, which had been removed prior to commencement of bypass in order to add and circulate heparin in the machine, was not reapplied prior to bypass commencing as it should have been. This led to a significant shunt being present within the bypass circuit meaning that Mr Brooks became profoundly hypotensive with low blood supply to his brain. After a number of measures were taken to try to identify the cause of the low pressure, the absence of the clamp was identified at about 2200 hrs at which point the clamp was reapplied with full blood flow and pressure achieved again, allowing the emergency surgery to proceed and the bleeding resolved. After the surgery, Mr Brooks was transferred to the Cardiac ICU but he failed to regain consciousness. It was established that he had sustained a significant hypoxic ischaemic acquired brain injury due primarily to the loss of the blood supply/flow to his brain during the surgery. He remained in a state of unresponsive wakefulness and was subsequently moved to a neurology ward, with plans put in place to transfer him to a specialist neurology rehabilitation unit. However, during August 2024 his medical condition deteriorated due to a number of complications including the development of irreversible renal failure and he subsequently passed away in the neurology ward on 11th September 2024. Based on information from Mr Brooks’ treating clinicians the medical cause of death was determined to be: 1a Hypoxic brain injury 1b Cardiac Surgery - Coronary Artery Bypass Surgery and Aortic Root Replacement 7th May 2024

1c 1d II Ischaemic Heart Disease, Aortic Stenosis, Aortic Aneurysm, Diabetes, Hypertension, Hypercholesterolaemia

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Report details

Reference
2025-0276
Date of report
5 June 2025
Coroner
Simon Brenchley
Coroner area
Birmingham and Solihull

Responses identified

Responses identified 1 of 1
All listed responses identified

Organisations named in PFD reports are normally expected to respond within 56 days. Deadline: 31 Jul 2025.

Sent to

Department of Health and Social Care

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