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West of Ireland Diabetes Foot Study: Epidemiology, Cost, Feasibility and Implications for Clinical Practice and Policy

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West of Ireland Diabetes Foot Study: Epidemiology, Cost, Feasibility and Implications for Clinical Practice and Policy. Dr Sean Dinneen, Principal Investigator Laura Kelly, Research Podiatrist Lorna Hurley, Project Manager. Introduction. 15% of people with diabetes develop foot ulceration

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slide1

West of Ireland Diabetes Foot Study:Epidemiology, Cost, Feasibility and Implications for Clinical Practice and Policy

Dr Sean Dinneen, Principal Investigator

Laura Kelly, Research Podiatrist

Lorna Hurley, Project Manager

introduction
Introduction
  • 15% of people with diabetes develop foot ulceration
  • Risk factors:
    • diabetic neuropathy
    • structural foot deformity
    • peripheral arterial disease
  • Complications: infection, osteomyelitis, gangrene
  • 5% to 15% with diabetic foot ulcers require amputation
  • Lack of research on the diabetes foot in Ireland
  • In-patient expenditure for diabetic foot ulceration = €23,500 per patient (Smith et al, 2005)
multidisciplinary team management of diabetes foot ulcers
Multidisciplinary Team Management of Diabetes Foot Ulcers

General Practitioner & Practice Nurse

Diabetes Specialist Team (Medical & Nursing)

Public Health Nurses

Foot Ulcer Management

Hospital Podiatrist

Orthopaedic Specialists

Community Podiatrists

Vascular Specialists

Plaster technicians

Physiotherapists

Orthotists

slide4

Many foot related complications can be prevented

International Guidelines recommend annual screening for diabetes foot complications

1998 study in WHB: great variation in the frequency of foot checks by GP’s

HSE: greater emphasis on Primary Care Management of chronic diseases

Need for clear guidance and training for health professionals involved in diabetes care

background pilot study
Background: Pilot Study
  • Pilot Study carried out in 2006
  • Patients recruited from one city-practice
  • 30 patients attended for screening (44%)
  • Neurological Assessment
    • NDS (Vibration, Temperature, Blunt/sharp sensation, Ankle Jerk)
    • 10g monofilament
  • Vascular Assessment
    • Palpation of Pedal Pulses
    • ABPI
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(Edmonds & Foster 2006)4

Figure 1: Monofilament testing

Figure 2: ABPI testing

pilot study conclusions
Pilot Study Conclusions
  • A significant number of patients have abnormalities detectable on a simple panel of foot screening tests
  • These tests are relatively easy to perform
  • A standardised panel of Foot Screening Tests could easily incorporated into the patients annual review visit in General Practice
  • A larger study is required to establish the true prevalence of diabetes foot complications
diabetes foot study research team
Diabetes Foot Study Research Team
  • Dr Sean Dinneen, Principal Investigator
  • Laura Kelly, Research Podiatrist
  • Lorna Hurley, Project Manager
  • Dr Liam Glynn, GP
  • Dr Caroline McIntosh, Head of Podiatry, NUIG
  • Paddy Gillespie, Health Economist, NUIG
  • Trish Godwin, Chiropody Manager, Galway PCCC
  • John Newell, Statistician, NUIG
  • Dr Adam Garrow, University of Salford
slide10

The West of Ireland Diabetes Foot Study: Epidemiology, Cost, Feasibility and Implications for Clinical Practice and Policy

slide11
Aims

To establish a set of easy to use measures for screening for diabetes foot complications

To apply these measures to a large sample of patients attending local general practices

To recruit medical and nursing staff from these practices to become skilled in performing diabetes foot examinations

To establish the prevalence of diabetes foot complications in this population

To determine the incidence and predictors of new diabetic foot events at 18 months  

aims continued
Aims (continued)
  • To determine the impact of foot complications on Health Status, Quality of Life, Anxiety & Depression
  • In all patients developing new foot ulcers:
    • Establish the degree to which these patients used the health service for the duration of their foot care episode
    • Establish the cost of each foot care episode to the patient and to the health service
study design
Study Design
  • Design:
    • Longitudinal observational study
    • Main Study: Foot Screening Study (est. n=560)
      • baseline screening visit
      • 18 month follow-up
    • Sub-study: Foot Ulcer Cost Analysis
      • Prospective gathering of cost data
recruitment
Recruitment

Practice Recruitment

  • Recruitment of General Practices (Nov‘08–Apr ‘09)
  • Letters of ‘Invitation to participate’ sent
  • Practice meetings & presentations
  • Training of Practice Nurses

Patient Recruitment

  • Joint review of diabetes register and inclusion/exclusion criteria
  • Invitation letters to patients
  • Practice-based clinics performed by the Practice Nurse and Research Podiatrist
overview of screening study
Overview of Screening Study

Baseline Visit

  • Consent
  • Questionnaires
  • Foot Screening
      • Vascular Assessment
      • Neurological Assessment
      • Plantar Pressure Assessment
  • Foot Wound Alert Card

6 month & 12 months

  • Wound Alert reminder letters

Follow-up visit (18 months)

  • Questionnaires
  • Foot Screening Tests (as above)
screening study issues arising
Screening Study: Issues Arising
  • Choice of Questionnaires
    • Generic (SF-12 v EUroQoL)
    • Disease Specific (ADDQoL v WB-Q28)
  • Choice of Vascular Assessment
    • Pulse palpation ± Doppler Waveform ± ABPI / Toe Pressure
    • Training / skill issue
  • Assessing Deformity
    • Observational tests - too subjective
overview of cost analysis sub study
Overview of Cost Analysis Sub-Study
  • Podiatric review of all foot wounds (& photo)
  • Foot Ulcer Grading (Texas Classification System)
  • NeuroQol questionnaire
  • Support from Health Economists
    • Patient Resource Items
      • Health Economic Questionnaire
    • Healthcare Resource Items:
      • Hand-held log of all health service contact
      • Review of all medical notes
cost analysis issues arising
Cost Analysis: Issues Arising
  • Small numbers: estimated 2% incidence
  • Potential for missing some ulcers due to:
    • Failure of patients to report
    • Failure of health professionals to report
    • Uncertainty as to the diagnosis of an ulcer e.g.

“ when does a wound become an ulcer?”

  • Potential for missing some health service contact when calculating the Health Service Resource Cost
  • Unit-Cost Data is not readily available for some outpatient visits
progress to date
Progress to date
  • REC Approval from ICGP and GUH
  • Awaiting approval of some amendments
  • 8 practices recruited so far
  • Training day held in September for PN’s
  • Approximately 5 clinics booked (Nov-Dec)
slide22
Thank You!

Questions?

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