Impact of Sleep Apnea on Diabetic Foot Wound (SAS-FOOT)

This study is currently recruiting participants. (see Contacts and Locations)
Verified June 2015 by AGIR à Dom
Information provided by (Responsible Party):
AGIR à Dom Identifier:
First received: April 6, 2012
Last updated: June 22, 2015
Last verified: June 2015
Sleep apnea syndrome (SAS) is a common comorbidity of type 1 and type 2 diabetes. A low transcutaneous oxygen tension (PtcO2)measured on the foot is pejorative prognostic factor for the healing of a diabetic foot wound. SAS causes intermittent nocturnal hypoxia and sympathetic overactivity. The investigators hypothesized that SAS could be a factor reducing the PtcO2.Therefore, the main objective of this study is to assess the variation in PtcO2 between the end of the night and midday in patients with -or at risk of- diabetic foot wound according to the presence or not of sleep apnea syndrome.The secondary objective is to assess the impact of positive airway pressure therapy on PtcO2 measured at the end of the night.

Condition Intervention
Diabetic Foot
Sleep Apnea
Device: Positive airway pressure therapy

Study Type: Observational
Study Design: Observational Model: Case Control
Time Perspective: Prospective
Official Title: Influence of Sleep Apnea Syndrome and Its Treatment by Positive Airway Pressure Therapy on Transcutaneous Oxygen Tension (PtcO2)in Patients With Foot Wound or at Risk for Foot Wound

Resource links provided by NLM:

Further study details as provided by AGIR à Dom:

Primary Outcome Measures:
  • Transcutaneous oxygen tension (PtcO2) [ Time Frame: Transcutaneous oxygen tension is assessed at the end of the night (5:00a.m) and at midday (12:00 a.m) ] [ Designated as safety issue: No ]
    Transcutaneous oxygen tension (PtcO2)is measured with a Radiometer TCM4 (Radiometer, Copenhagen, Denmark) device, on the dorsum of the foot at the base of the second metatarsal, or as close to this location as possible. Calibration is performed before each measurement. All measurements are performed in supine position after 20 min of rest. Room temperature is kept constant (around 21°C-24°C). Patients are asked to avoid smoking or drinking coffee for at least 2 h before investigations

Estimated Enrollment: 60
Study Start Date: May 2012
Estimated Study Completion Date: April 2016
Estimated Primary Completion Date: April 2016 (Final data collection date for primary outcome measure)
Groups/Cohorts Assigned Interventions
Foot-wound without SAS
patients with diabetic foot wound(or at risk of diabetic foot wound) without sleep apnea syndrome
Foot-wound with SAS
patients with diabetic foot wound(or at risk of diabetic foot wound) with sleep apnea syndrome
Device: Positive airway pressure therapy
Patients with diabetic foot wound and sleep apnea syndrome are treated by positive airway pressure therapy for 2 consecutive nights versus sham-pressure therapy in a cross-over design (2nights of wash-out between effective therapy and placebo)


Ages Eligible for Study:   18 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Sampling Method:   Probability Sample
Study Population
Consecutives diabetic patients referred to our tertiary diabetes unit (Grenoble University Hopsital, France) for diabetic foot wound

Inclusion Criteria:

  • Types 1 or 2 or MODY diabetes with diabetic foot wound (or at risk of foot wound stage 2 and 3 (see reference PMID:18442189).
  • Patients covered by social insurance

Exclusion Criteria:

  • Patients with sleep apnea syndrome previously treated by positive airway pressure therapy.
  • Patients previously treated by additional oxygen therapy. Patient with unstable psychiatric disease
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01573897

Contact: Anne Laure Borel, MD-PhD 33476765509
Contact: Jean Christian Borel, PhD 33476510304

Diabetes and Endocrinology Unit, Grenoble University Hospital Recruiting
Grenoble, France, 38043
Sponsors and Collaborators
AGIR à Dom
Principal Investigator: Anne Laure Borel, MD-PhD Diabetes and Endocrinology Unit, Grenoble University Hospital
  More Information

No publications provided

Responsible Party: AGIR à Dom Identifier: NCT01573897     History of Changes
Other Study ID Numbers: 12-AGIR-01
Study First Received: April 6, 2012
Last Updated: June 22, 2015
Health Authority: France: Committee for the Protection of Personnes

Keywords provided by AGIR à Dom:
Sleep apnea
Diabetic foot
Positive Airway Pressure therapy

Additional relevant MeSH terms:
Diabetic Foot
Sleep Apnea Syndromes
Cardiovascular Diseases
Diabetes Complications
Diabetes Mellitus
Diabetic Angiopathies
Diabetic Neuropathies
Endocrine System Diseases
Foot Ulcer
Leg Ulcer
Nervous System Diseases
Respiration Disorders
Respiratory Tract Diseases
Signs and Symptoms
Signs and Symptoms, Respiratory
Skin Diseases
Skin Ulcer
Sleep Disorders
Sleep Disorders, Intrinsic
Vascular Diseases processed this record on November 27, 2015