Efficacy of amoxicillin/clavulanic acid after surgical drainage of perianal abscess in the prevention of the development of anal fistula. A randomized, double-blind clinical trial.
This research is investigating whether a widely used antibiotic, amoxicillin/clavulanic acid (which you might know as Co-amoxiclav), can prevent the development of an anal fistula following surgery for a perianal abscess. An anal fistula is a small tunnel that can form between the skin near the anus and the anal canal after an infection, and it often requires further treatment. The study is particularly interested in understanding what percentage of patients who take the antibiotic develop a fistula compared to those who don't. Researchers will also look at how quickly fistulas appear, their complexity, if new abscesses occur, and how a fistula might affect a person's quality of life. This is a post-market study, meaning the antibiotic is already approved and in general use.
At a glance
What is this study about?
Imagine you've had an infection near your bottom, called a perianal abscess, and you've had surgery to drain it. Sometimes, even after surgery, a small tunnel called an anal fistula can form. This usually means more treatments are needed.
This study is trying to find out if giving a common antibiotic, called amoxicillin/clavulanic acid (often known as Co-amoxiclav), after surgery for this kind of abscess can prevent these fistulas from forming. The aim is to see if taking this antibiotic makes you less likely to develop a fistula compared to people who don't take it. Researchers will be carefully checking how many people in each group develop a fistula.
They're also interested in other things, like how long it takes for a fistula to show up, how complicated it might be, if people get another abscess, and if they need more surgery. The study will also look at how developing a fistula affects a person's quality of life. This type of study uses a medicine that is already available and widely used, so it's a way to learn more about its effects in a specific situation.
Key takeaways
- This study evaluates an antibiotic (Co-amoxiclav) for preventing anal fistulas.
- It's for people having surgery for their first perianal abscess.
- The study aims to see if the antibiotic reduces fistula development.
- Participants will take either the antibiotic or a dummy pill (placebo).
- Researchers will monitor fistula development, complications, and quality of life.
- This is a 'Phase IV' study, meaning the drug is already approved and in use.
Who may be eligible?
To be considered for this study, you must be at least 18 years old. Both men and women can take part.
The most important requirement is that you've recently had surgery for your very first perianal abscess. This study is specifically for people who are dealing with this situation for the first time.
The researchers will check your medical history to make sure the study medication is safe and appropriate for you.
Could this study suit you?
Answer these quick questions to see if you may be eligible. This is a guide only — the research team makes the final call.
- Are you 18 years old or older?
- Have you recently had surgery for a perianal abscess?
- Is this the first time you've had a perianal abscess?
- Are you able to attend follow-up appointments as required?
What does participation involve?
If you decide to take part, you would be randomly assigned to either receive the antibiotic amoxicillin/clavulanic acid or a dummy pill (placebo). Neither you nor your doctor would know which one you are taking – this is called a "double-blind" study to keep the results fair.
You would take the medication as directed for a planned period. During the study, you'll have regular check-ups with the study team. They will monitor your health, look for any signs of a fistula, and ask you to complete questionnaires about your quality of life, especially if a fistula develops. The total duration of your involvement in the study, including follow-up visits, will be explained in full by the study team.
Potential risks and benefits
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Common questions
What is a perianal abscess?
A perianal abscess is a collection of pus and infection near the anus, which often needs to be drained with surgery.
What is an anal fistula?
An anal fistula is a small, abnormal tunnel that can form under the skin near your bottom, often connecting to the anal canal, usually after an infection or abscess.
What is amoxicillin/clavulanic acid?
It's a common antibiotic, often known by brand names like Co-amoxiclav, used to treat various bacterial infections.
Why is this study 'double-blind'?
Being 'double-blind' means neither you nor your doctor will know if you're getting the antibiotic or a dummy pill. This helps ensure the results are unbiased and reliable.
Will I get good medical care if I join?
Yes, you will continue to receive excellent standard medical care. Your participation in the study is additional research to help learn more.
How to find out more
Always speak to your GP or specialist before deciding to take part in a study.
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