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Improving symptoms of intermittent claudication in patients with erectile dysfunction and peripheral vascular disease: a pilot study assessing the benefit of daily dosing with Cialis (tadalafil) 10 mg
ISRCTN ISRCTN40898239
ClinicalTrials.gov identifier
Public title Improving symptoms of intermittent claudication in patients with erectile dysfunction and peripheral vascular disease: a pilot study assessing the benefit of daily dosing with Cialis (tadalafil) 10 mg
Scientific title
Acronym N/A
Serial number at source GJ001 PVD
Study hypothesis Daily dosing with the Phosphodiesterase type 5 (PDE 5) inhibitor tadalafil (10 mg) (for a 14-day period) may improve symptoms of claudication in patients with erectile dysfunction and peripheral vascular disease.
Ethics approval Ethics approval received from the St Thomas' Hospital Local Research Ethics Committee on the 9th January 2007 (ref: 06/Q0702/162).
Study design Prospective, randomised, double-blind, placebo controlled, cross over pilot study
Countries of recruitment United Kingdom
Disease/condition/study domain Erectile dysfunction, Peripheral Vascular Disease
Participants - inclusion criteria 1. Male aged 40 - 80 years
2. Erectile dysfunction (Sexual Health Inventory for Men [SHIM] score less than 21)
3. Peripheral Vascular Disease (PVD) (confirmed by previous ultrasound studies)
Participants - exclusion criteria 1. Contraindication to PDE 5 inhibitor
2. Inability to undertake an exercise tolerance test
Anticipated start date 19/09/2007
Anticipated end date 01/04/2008
Status of trial Completed
Patient information material
Target number of participants 20
Interventions Suitably screened and consenting patients will undertake an Exercise Tolerance Test (ETT) (modified Bruce protocol). Once baseline is established (two tests, 2 weeks apart), Tadalafil 10 mg daily or placebo will be prescribed for a 14 day period. ETT will then be repeated. A weeks wash-out will be observed. A repeat ETT will be undertaken and the patient prescribed either placebo or tadalafil for a further 14 day period. ETT will be repeated. A final follow up occurs one week after this, and with a one week run in, this makes the total duration of this study 7 weeks.
Primary outcome measure(s) Total number of minutes/seconds on the exercise treadmill. Time to first report of leg pain will be recorded, measured at the end of weeks 3, 4 and 6.
Secondary outcome measure(s) Change in score on the Walking Impairment Questionnaire and the Peripheral Artery Disease Symptom Scale, measured at the end of weeks 3, 4 and 6.
Sources of funding The Friend's of Guy's Hospital (UK)
Trial website
Publications
Contact name Dr  Graham  Jackson
  Address Cardiothoracic Centre
6th Floor, East Wing
St Thomas' Hospital
  City/town London
  Zip/Postcode SE1 7EH
  Country United Kingdom
  Tel +44 (0)20 7188 1055
  Email jean.stagg@gstt.nhs.uk
Sponsor Guy's and St Thomas' NHS Foundation Trust (UK)
  Address Research and Development Office
Floor 3, Coneybeare House
Guy's Hospital
St Thomas' Street
  City/town London
  Zip/Postcode SE1 9RT
  Country United Kingdom
  Tel +44 (0)20 7188 5733
  Email kate.blake@gstt.nhs.uk
  Sponsor website: http://www.guysandstthomas.nhs.uk/
Date applied 18/09/2007
Last edited 05/12/2007
Date ISRCTN assigned 05/12/2007
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