Use of Near Infrared Spectroscopy to Detect Muscle Perfusion in the Lower Extremity of Uninjured Subjects

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: NCT01284023
Recruitment Status : Active, not recruiting
First Posted : January 26, 2011
Last Update Posted : March 17, 2017
Nonin Medical, Inc
Information provided by (Responsible Party):
J&M Shuler

Brief Summary:
Acute compartment syndrome (ACS) is a complication of lower leg trauma that occurs when the pressure inside the leg due to swelling exceeds the body's ability to provide blood to the muscle of the leg. This condition cuts off blood flow to the leg. Left untreated, the condition can result in devastating consequences including complete loss of function of the lower extremity or amputation. Near-infrared spectroscopy (NIRS)-based tissue perfusion monitors are a non-invasive means of continuously monitoring the amount of oxygen in the tissues of an injured extremity. The device utilizes harmless red light to detect the proportion of hemoglobin saturated with oxygen up to 3 cm below the skin surface. The purpose of this study will be to launch the first stages of validation of this device as a diagnostic tool for compartment syndrome, by observing this device in uninjured subjects.

Condition or disease Intervention/treatment
Acute Compartment Syndrome Other: Shaving

Study Type : Observational
Estimated Enrollment : 42 participants
Observational Model: Other
Time Perspective: Cross-Sectional
Official Title: Use of Near Infrared Spectroscopy to Detect Muscle Perfusion in the Lower Extremity of Uninjured Subjects
Study Start Date : January 2011
Actual Primary Completion Date : August 2011
Estimated Study Completion Date : December 2017

Resource links provided by the National Library of Medicine

U.S. FDA Resources

Group/Cohort Intervention/treatment
Uninjured volunteers
Other: Shaving
Male patients will have the leg hair under each sensor site shaved, using an electric razor, and near infrared spectroscopy monitored for an additional 15 minutes

Primary Outcome Measures :
  1. Near infrared spectroscopy [ Time Frame: 1 hour ]
    Uninjured subjects will lay supine and be monitored for two one hour periods, on separate days.

Secondary Outcome Measures :
  1. Skin pigmentation [ Time Frame: prior to monitoring ]
    due to absorption of hemoglobin and melanin at near infrared wavelengths, skin pigmentation may affect near infrared spectroscopy values. Skin pigmentation values will be recorded on each study participant using the DSM-II (CyberDerm, Broomall, PA) and the IMS SmartProbe (IMS, Portland, ME).

  2. fat depth [ Time Frame: prior to monitoring ]
    because the near infrared spectroscopy device measures tissue oxygenation 2-3 cm below the skin, the device may obtain an altered reading or be unable to obtain a reading on subjects with excessive subcutaneous fat. Data on fat depth will be collected on control subjects using the BX2000 (IntelaMetrix, Livermore, CA)

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Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Sampling Method:   Non-Probability Sample
Study Population
Uninjured volunteers will be recruited from a pool of uninjured individuals at the principle investigator's practice. Participation will be completely volutnary

Inclusion Criteria:

  • over 18 years old

Exclusion Criteria:

  • any current traumatic lower or upper extremity injury
  • unwilling or unable to provide written informed consent
  • history of any anatomy-altering injury or procedure to the upper or lower extremity

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): NCT01284023

United States, Georgia
Athens Orthopedic Clinic, PA
Athens, Georgia, United States, 30606
Sponsors and Collaborators
J&M Shuler
Nonin Medical, Inc
Principal Investigator: Michael Shuler, MD Athens Orthopedic Clinic, PA

Responsible Party: J&M Shuler Identifier: NCT01284023     History of Changes
Other Study ID Numbers: NIRS-02
First Posted: January 26, 2011    Key Record Dates
Last Update Posted: March 17, 2017
Last Verified: March 2017

Keywords provided by J&M Shuler:
near infrared spectroscopy
acute compartment syndrome

Additional relevant MeSH terms:
Compartment Syndromes
Muscular Diseases
Musculoskeletal Diseases
Vascular Diseases
Cardiovascular Diseases