Antibiotic treatment for intermittent bladder catheterisation with once daily prophylaxis (the AnTIC study): Study protocol for a randomised controlled trial

Catherine Brennand, Alexander von Wilamowitz-Moellendorff, Sarah Dunn, Jennifer Wilkinson, Thomas Chadwick, Laura Ternent, Yemi Oluboyede, Ruth Wood, Katherine Walton, Mandy Fader, James N'Dow, Mohamed Abdel-Fattah, Doreen McClurg, Paul Little, Paul Hilton, Anthony Timoney, Nicola Morris, Nikesh Thiruchelvam, James Larcombe, Simon HarrisonHeather Armstrong, Elaine McColl, Robert Pickard

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BACKGROUND: Clean intermittent self-catheterisation is an important management option for people who cannot empty their bladder effectively. Recurrent urinary tract infections are common in these patients. Data from recent studies suggest that antibiotic prophylaxis may be beneficial in reducing infection risk, but the effectiveness of this intervention remains uncertain.

METHODS/DESIGN: This is a 52-site, patient randomised superiority trial set in routine care comparing an experimental strategy of once daily antibiotic prophylaxis for 12 months against a control strategy of no prophylaxis in people who carry out self-catheterisation and suffer recurrent urinary tract infections. The primary outcome is number of urinary tract infections during a 12-month treatment period. Both groups will otherwise receive usual care including on demand treatment courses of antibiotics for urinary tract infection. Participants and their clinicians will not be blinded to the allocated intervention, but central trial staff managing and analysing trial data will, as far as possible, be unaware of participant allocation. The analysis will follow intention-to-treat principles.

DISCUSSION: This trial was commissioned and funded by the United Kingdom National Health Service following prioritisation of the research question by the National Institute for Health and Care Excellence.

TRIAL REGISTRATION: ISRCTN67145101 EUDRACT2013-002556-32. Registered on 25 October 2013.

Original languageEnglish
Article number276
Pages (from-to)1-18
Number of pages18
Publication statusPublished - 4 Jun 2016

Bibliographical note

Funder statement
This article/paper/report presents independent research funded by the National Institute for Health Research (NIHR). The views expressed are those of the author(s) and not necessarily those of the NHS, the NIHR or the UK Government’s Department of Health.


We would like to acknowledge Dr Graeme MacLennan, Mr Simon Skene, Mr Julian Shah and Dr Nadine Dougall (past member) for their valuable contribution to the study as DMC members. We would like to thank Professor Chris Butler, Dr Emma Hall, Mr Roland Morley, Mr Dan Wood, Ms Jane Laws and Ms Sarah Bittlestone for their oversight of the AnTIC study as members of the TSC, and we would like to thank Ms Heather Armstrong for her contributions as a patient group representative. We thank all Principal Investigators and site staff for their commitment in recruitment for the AnTIC study. Finally, we would like to thank Hazel Wilde for secretarial support.

The trial is funded by the NIHR Health Technology Assessment Programme (project reference: 11-72-01) and will be published in full in the Health Technology Assessment journal series. The authors also acknowledge the support of the National Institute for Health Research through the Comprehensive Clinical Research Network.


  • self-catheterisation
  • antibiotic prophylaxis
  • urinary tract infection
  • randomised controlled trial
  • antibiotic resistance
  • UTI
  • RCT


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