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A Randomised, Prospective, Double Blinded, Placebo Controlled Trial to Determine the Efficacy of Continuous Infusion Ankle Block Compared to Standard Single Bolus Block in the Management of Postoperative Pain Following Foot and Ankle Surgery
ISRCTN ISRCTN57941461
ClinicalTrials.gov identifier
Public title A Randomised, Prospective, Double Blinded, Placebo Controlled Trial to Determine the Efficacy of Continuous Infusion Ankle Block Compared to Standard Single Bolus Block in the Management of Postoperative Pain Following Foot and Ankle Surgery
Scientific title
Acronym N/A
Serial number at source N0360177161
Study hypothesis To assess the effectiveness of a single administration (bolus) of local anaesthetic to the nerves that supply the foot and ankle versus a bolus and continuous infusion of local anaesthetic to the same nerves in order to manage post operative pain following foot and ankle surgery.
Ethics approval Not provided at time of registration
Study design Randomised prospective double blinded placebo controlled trial
Countries of recruitment United Kingdom
Disease/condition/study domain Surgery: Foot and ankle
Participants - inclusion criteria Patients undergoing ankle and hindfoot surgery.
Participants - exclusion criteria 1. Dementia
2. Peripheral neuropathy
Anticipated start date 01/06/2006
Anticipated end date 01/06/2007
Status of trial Completed
Patient information material
Target number of participants 56
Interventions Continuous infusion ankle block vs standard single bolus block.

Intention to treat analysis will be used. The outcomes of the two treatment groups will be evaluated using two-sample t tests, with 95% confidence intervals reported for the difference in means. Secondary binary outcomes will also be analysed using two sample t tests, but using a significance level of 1%. All analyses will be adjusted (using linear regression) for confounding variables that may differ by chance between the treatment groups. Stata for Windows (StataCorp, USA) will be the statistical package of choice.
Primary outcome measure(s) Mean patient visual analogue pain scores over 72 hours post-operatively.
Secondary outcome measure(s) 1. Time to mobilise
2. Time to discharge
Sources of funding North Hampshire Hospitals NHS Trust (UK)
NHS R&D Support Funding
Trial website
Publications
Contact name Mr  James  Calder
  Address North Hampshire Hospital NHS Trust
Aldermaston Road
  City/town Basingstoke
  Zip/Postcode RG24 9NA
  Country United Kingdom
  Tel +44 01256 313156
  Fax +44 01256 313162
  Email j.calder@ic.ac.uk
Sponsor Record Provided by the NHSTCT Register - 2006 Update - Department of Health
  Address The Department of Health, Richmond House, 79 Whitehall
  City/town London
  Zip/Postcode SW1A 2NL
  Country United Kingdom
  Tel +44 (0)20 7307 2622
  Email dhmail@doh.gsi.org.uk
  Sponsor website: http://www.dh.gov.uk/Home/fs/en
Date applied 29/09/2006
Last edited 17/07/2008
Date ISRCTN assigned 29/09/2006
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