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Pilot Study to Determine the Optimal Technique for Measurement of Ankle Blood Pressures

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00819598
Recruitment Status : Completed
First Posted : January 9, 2009
Last Update Posted : November 13, 2009
The Cleveland Clinic
Information provided by:
Summit Doppler Systems, Inc.

Brief Summary:

Peripheral arterial disease (PAD) is a highly prevalent medical condition. Patients with PAD are usually diagnosed on the basis of the ankle-brachial index. The ankle-brachial index is the ratio of ankle pressure to arm pressure based on measurement of blood pressures in the arms and legs using a Doppler device. The need for dedicated equipment and trained personnel, along with the time required to perform the test, have been identified as barriers to widespread implementation of ankle-brachial index screening. The use of automated oscillometric devices for blood pressure measurement and determination of the ankle-brachial index has been applied with variable success. It will be beneficial to investigate a reliable oscillometric-based procedure that can accurately measure leg pressures for the ankle-brachial index across the entire spectrum of PAD severity.

The purpose of this study is to determine the optimal oscillometric-based technique for estimation of Doppler-derived systolic arm and ankle blood pressures for calculation of the ankle-brachial index in patients with and without PAD.

Subjects with suspected arterial disease in the non-invasive lab will be enrolled. Arm, ankle, and toe pressure measurements will be made in the supine position using Doppler, oscillometric methods, and photoplethysmographic sensor. Arm and ankle pressures from a subset of subjects will be obtained in both seated and supine positions. The ankle-brachial index and toe-brachial index will be calculated.

Condition or disease Intervention/treatment

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Study Type : Observational
Estimated Enrollment : 70 participants
Observational Model: Case-Only
Time Perspective: Prospective
Official Title: Pilot Study to Determine the Optimal Oscillometric-Based Technique for Measurement of Ankle Blood Pressures for the Ankle-brachial Index
Study Start Date : January 2009
Actual Primary Completion Date : October 2009
Actual Study Completion Date : October 2009

Resource links provided by the National Library of Medicine

Group/Cohort Intervention/treatment
Blood pressures using Doppler and oscillometric methods will be obtained at each limb and on one toe from each foot.

Blood pressure measurements will be taken at each limb (arm and ankle) with Doppler and oscillometric based methods.

Information from the National Library of Medicine

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Ages Eligible for Study:   50 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Sampling Method:   Non-Probability Sample
Study Population
Patients presenting to Cleveland Clinic's non-invasive vascular lab

Inclusion Criteria:

  • Patient at least 50 years of age
  • Ambulatory outpatient
  • Referred to non-invasive Vascular Laboratory for evaluation of suspected arterial disease.

Exclusion Criteria:

  • Unable to give informed consent
  • Unable to lie supine for at least 15 minutes

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00819598

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United States, Ohio
Cleveland Clinic
Cleveland, Ohio, United States, 44195
Sponsors and Collaborators
Summit Doppler Systems, Inc.
The Cleveland Clinic
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Principal Investigator: Heather L Gornik, MD The Cleveland Clinic
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Responsible Party: Dr. Heather Gornik, Cleveland Clinic Identifier: NCT00819598    
Other Study ID Numbers: CCF IRB 08-823
First Posted: January 9, 2009    Key Record Dates
Last Update Posted: November 13, 2009
Last Verified: November 2009
Additional relevant MeSH terms:
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Peripheral Arterial Disease
Peripheral Vascular Diseases
Arterial Occlusive Diseases
Vascular Diseases
Cardiovascular Diseases