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Contact the study team using the details below to take part. If there are no contact details below please ask your doctor in the first instance.

Contact Information:

Mr Matthew Lee
m.j.lee@sheffield.ac.uk


Mr Matthew Lee
m.j.lee@sheffield.ac.uk


Cameron Obie
cameron.obie@nhs.net


Study Location:

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Be Part of Research - Trial Details - Atrial Fibrillation After Resection (AFAR)

Atrial Fibrillation After Resection (AFAR)

Medical Conditions

Other forms of heart disease
Malignant neoplasms of digestive organs


This information is provided directly by researchers, and we recognise that it isn't always easy to understand. We are working with researchers to improve the accessibility of this information. In some summaries, you may come across links to external websites. These websites will have more information to help you better understand the study.


Atrial fibrillation (AF) is an irregular heart beat which can cause symptoms such as shortness of breath and dizziness. It can lead to an increased risk of a blood clot and stroke and is more common in older people. AF occurs in 12-15% of patients following abdominal surgery and is associated with a longer hospital stay and increased risk of stroke within 30 days. Cases of AF post-surgery are likely to increase, as the surgical population is aging.

The diagnosis and treatment of AF is currently focussed on the prevention of complications, which brings with it a burden of drugs and side-effects. Despite therapy, around 10% of patients with AF will suffer a major adverse event such as stroke, heart attack or death within 5 years of diagnosis. Even where major events do not occur, 92% of patients will suffer from significant symptoms from AF. Beyond physical symptoms, anxiety and depression are seen frequently in this patient group and patients have a worse quality of life compared to healthy people. Understanding the risks factors for the development of AF is important. This could enable clinicians to treat a patient before their operation to prevent AF from developing.

This study will determine how many patients have AF and how many develop it after they have undergone colorectal cancer surgery. The patient will be tested for AF before their operation, and at 30 and 90 days after their operation using a 24h heart rhythm monitor. Complications of AF and health services used will be reported. This is a national study involving up to 15 colorectal cancer surgical centres, recruiting 720 patients. The study is funded by the NIHR Research for Patient Benefit (RfPB).

Start dates may differ between countries and research sites. The research team are responsible for keeping the information up-to-date.  

The recruitment start and end dates are as follows:

16 Jan 2020 28 Feb 2026

Observational and Interventional

Type: Active Monitoring;



You can take part if:



You may not be able to take part if:


- Patients aged less than 65 years old - Pre-existing atrial fibrillation (persistent or paroxysmal)


Below are the locations for where you can take part in the trial. Please note that not all sites may be open.

  • Queen's Hospital
    Rom Valley Way
    Romford
    Essex
    RM7 0AG
  • Macclesfield District General Hospital
    Victoria Road
    Macclesfield
    Cheshire
    SK10 3BL
  • Royal Blackburn Hospital
    Haslingden Road
    Blackburn
    Lancashire
    BB2 3HH
  • Royal Berkshire Hospital
    London Road
    Reading
    Berkshire
    RG1 5AN
  • Royal Devon & Exeter Hospital (wonford)
    Barrack Road
    Exeter
    Devon
    EX2 5DW
  • Musgrove Park Hospital
    Musgrove Park
    Taunton
    TA1 5DA
  • Southend Hospital
    Prittlewell Chase
    Westcliff-on-sea
    Essex
    SS0 0RY
  • York Hospital
    Wigginton Road
    York
    North Yorkshire
    YO31 8HE
  • Queen Elizabeth Hospital
    Queen Elizabeth Medical Centre
    edgbaston
    Birmingham
    West Midlands
    B15 2TH
  • The Royal Victoria Infirmary
    Queen Victoria Road
    Newcastle Upon Tyne
    Tyne And Wear
    NE1 4LP
  • Countess Of Chester Hospital
    The Countess Of Chester Health Park
    Chester
    Cheshire
    CH2 1UL
  • Western General Hospital
    Crewe Road South
    Edinburgh
    Lothian
    EH4 2XU
  • Northern General Hospital
    Herries Road
    Sheffield
    South Yorkshire
    S5 7AU
  • Darlington Memorial Hospital
    Hollyhurst Road
    Darlington
    County Durham
    DL3 6HX
  • Medway Maritime Hospital
    Windmill Road
    Gillingham
    Kent
    ME7 5NY
  • University Hospital Crosshouse
    Kilmarnock Road
    Kilmarnock
    Ayrshire
    KA2 0BE

Mr Matthew Lee
m.j.lee@sheffield.ac.uk


Cameron Obie
cameron.obie@nhs.net


Mr Matthew Lee
m.j.lee@sheffield.ac.uk



The study is sponsored by SHEFFIELD TEACHING HOSPITALS NHS FOUNDATION TRUST and funded by NIHR Central Commissioning Facility (CCF) .




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for Trial ID: CPMS 42821

Last updated 08 January 2025

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