Adult Cardiac Surgery (Surgery Audit)

Cardiac surgery icon

The National Adult Cardiac Surgery Audit (NACSA) collects data on all major heart operations carried out in NHS hospitals and a selection of private hospitals throughout the UK.

What is Adult Cardiac Surgery?

Adult Cardiac Surgery includes all procedures performed on patients aged 18 or over that involve the heart or structures attached to the heart. For the purposes of this Audit we report on operations that involve surgically opening the chest wall and usually the pericardium (the sac around the heart). The most common of these procedures are: Coronary Artery Bypass Grafts (CABG), Valve surgery, operations on the Thoracic Aorta, or a combination of these.

Procedures on the heart performed with catheters (tubes inserted via arteries or veins to access the heart) are usually performed by interventional cardiologists rather than surgeons. These are included in several other national audits overseen by NICOR and are therefore not included here.

Adult Cardiac Surgery Audit 2023 

The NACSA Audit looks at all procedures undertaken in NHS cardiac surgery centres in the UK, as well as six private hospitals and one from the Republic of Ireland over a three year period, between 1st April 2019 to 31st March 2022. This provides an overview of the state of cardiac surgery in the UK during this timeframe (such as activity and trends), as well as reporting on several Quality measures.

The data are complete for all NHS work in England, Wales, and Northern Ireland.  Scotland has chosen to audit its own data since 2020/21, so the three Scottish units no longer contribute to NACSA. Data is missing from three private providers that chose to not take part during the last three years (2019/22).

To prevent the main report becoming too lengthy some of the data is included within a separate Appendix. This contains many supplementary tables and graphs not within the main report.

Clinical Outcomes Publication (COP)

The Adult Cardiac Surgery Audit participates within the Clinical Outcomes Publication (COP) programme which publishes information on all hospitals and consultants undertaking adult surgery. It provides data on in-hospital survival rates along with the total number of procedures performed on a rolling three year basis. This information is published on the Society for Cardiothoracic Surgery website and is produced by NICOR after undergoing a thorough validation process. The latest COP outcomes of individual hospitals and surgeons for the three years between 2019/20 and 2021/22 can be accessed by following the links provided at end of this page. Graphs plotting all units together are also available within the Appendix to the report.

Non-mortality outcome data by hospital

We have produced an interactive version of some of the non-mortality hospital level outcome data for the period 2018 to 2021. This includes a number of common serious complications seen after cardiac surgery such as strokes, post-operative bleeding and wound infection. This can be easily filtered by region, printed and downloaded (if you have any problems opening this please try in a different browser such as Chrome or Safari). More detailed analysis (including graphs) of non-mortality outcomes is also available within the Appendix (coming soon).

Links to Reports

Adult Cardiac Surgery Summary Report 2023

Appendix to 2023 NACSA report (2019-2022 data)

Key messages document

Line of Sight table

ACS Interactive Report (2019-2022)

 2018-21 Clinical Outcomes Publication (COP):

Hospital data –

Surgeon data –

Non-mortality outcome data by hospital:

ACS Interactive Report (2019-22)

NICOR report on effect of COVID on Cardiovascular Procedures


SCTS Blue Book 2020 (National Cardiac Surgery Activity Report 2002-2016)


Contact details:

Project Manager: Samuel Perwaiz

Project Coordinator: Jane Kerr

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