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Trial to double drug treatment for deadly abdominal infections

Hospital patients who develop deadly infections will be offered double the traditional course of antibiotics in a new trial. Patients with serious abdominal infections are usually given a two-week course, but often this is unsuccessful. Now, NIHR-funded researchers at the University of Leeds and the University of York are trialing a month-long course to establish whether it is more effective at clearing up the infection.

The EXTEND trial is co-led by Dr Andrew Kirby, Associate Professor at the University of Leeds’ School of Medicine and an NHS Consultant in Microbiology, and Mr Dermot Burke, Associate Professor in Surgery in Leeds’ School of Medicine.

Dr Kirby said: “There can be aversion to prescribing longer courses of antibiotics due to the risk of antimicrobial resistance to the drugs. But these infections are extremely serious and the current treatments do not work for a large proportion of patients. We want to see if a longer, fixed course cures more people - whether it stops the infection coming back, prevents new infections, and saves lives.”

Serious abdominal infections happen when the intestine is damaged, usually by bowel surgery or a disease, causing bacteria living in the intestine to leak into the surrounding cavity. These infections are a leading cause of sepsis in patients in intensive care units. Sepsis in the UK kills more people than breast, bowel and prostate cancer combined. 

Long courses of antibiotics can be contentious because they may increase the risk of bacteria finding ways to survive the antibiotics, meaning the antibiotics no longer work to fight the infection. Also, there is guidance that four days of antibiotics may be enough to treat serious abdominal infections.

The problem with short antibiotic courses is that 20% of patients are not cured and 10% die following their infection. Currently, doctors rely on blood tests and patient-reported symptoms to assess whether the infection has cleared up.  But if the bacteria have not been fully eradicated by the antibiotics, they can start to regrow, resulting in a recurrence of the infection and potentially more episodes of sepsis. This is why researchers now want to establish whether a set 28-day course of antibiotics can cure these infections more effectively than a doctor deciding when to stop the course. 

Professor Andrew Ustianowski, NIHR Joint National Infection Specialty Lead, said: "Intra-abdominal infections and sepsis are very serious issues in our populations. We have a variety of antibiotics that can help but we need specific research to inform us on how best to use them, including for how long. This NIHR-funded study is therefore an important trial that I expect will have a direct beneficial impact on our future management of these infections."

The EXTEND trial will start in August 2022. It will run for three years and will follow patients for six months. Half will receive a course of antibiotics prescribed by their doctor, normally for a week or two, and the other half will receive the 28-day course. The trial will be open to patients in hospital with a serious abdominal infection.

The study was funded by the NIHR Health Technology Assessment (HTA) Programme.

Find out more about the study on the NIHR Funding & Awards website.

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Upcoming Events

IP2022 IS COMING TO BOURNEMOUTH IN OCTOBER 2022

Bournemouth
17-19 October 2022

UKHCA Conference: Listen Up

Pendulum Hotel and Manchester Conference Centre, Manchester
3rd November 2022

MEDICA 2022

Dusseldorf Germany
14th November - 17th November

Future Surgery 2022

ExCel, London
15th - 16th November 2022

IDSc Annual Conference

The Eastside Rooms, Birmingham
29th - 30th November 2022

Access the latest issue of Clinical Services Journal on your mobile device together with an archive of back issues.

Download the FREE Clinical Services Journal app from your device's App store

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