What is L-Dex® ?
A New Paradigm of Lymphedema Management:
What is an L-Dex Measurement?
The lymphedema index (L-Dex) is a measurement system used to aid in the clinical assessment of unilateral lymphedema
of the arm (swelling occurring in only one arm).
ImpediMed L-Dex devices are the first cleared medical devices using low frequency impedance. They have been developed
to help your doctor detect the onset of lymphedema before feelings of heaviness or visible swelling occur.
The devices produce a lymphedema index (or L-Dex) value that can help determine if you are building up excess fluid in your
at-risk arm. The test takes only minutes to perform. It is painless and gives an immediate result.
*Note: L-Dex values that lie outside the normal range may indicate the early signs of lymphedema and values that have changed +10
L-Dex units from baseline may also indicate early lymphedema. The L-Dex scale is a tool to assist in the clinical assessment of
lymphedema by a medical provider.
Why Have an L-Dex Measurement?
- L-Dex measurements are a quick, non-invasive and sensitive method for aiding in the clinical assessment of lymphedema of the arm.
- L-Dex measurements can help your healthcare professional accurately monitor lymphedema whether in the early (hidden) or late stages.
- L-Dex measurements made each time you see your healthcare professional can help them:
- –Better clinically assess the early stages of lymphedema
- –Show you how any treatment or management is working
Tracking L-Dex History Over Time.
How are L-Dex Measurements Taken?
L-Dex measurements are made by passing a harmless electrical signal of very low
strength from the L-Dex device through your arm. Both arms are measured and the
whole procedure takes only minutes to complete.
Patient being assessed using an L-Dex® device
How Does it Work?
The electrical signal travels through the fluid surrounding the cells which make up the muscle and tissue of the arm. The amount of this fluid increases as lymphedema develops. Increased fluid means the electrical signal will travel more easily through the arm. An L-Dex device compares how easily the electrical signal travels in the unaffected versus the affected (or at-risk) arms and generates an L-Dex value from this comparison.
What Does an L-Dex Value Mean?
The L-Dex value indicates the difference in the amount of fluid in the unaffected arm versus the affected arm.
L-Dex values are displayed against a normal “healthy” range (see diagram below).
L-Dex values greater than 10 or an increase of 10 L-Dex units may be indicative of lymphedema.
L-Dex values indicative of lymphedema should decrease as a result of therapy.
The range of L-Dex values.*Note: L-Dex values that lie outside the normal range may indicate the early signs of lymphedema and values that have changed +10 L-Dex units from baseline may also indicate early lymphedema. The L-Dex scale is a tool to assist in the clinical assessment of lymphedema by a medical provider.
How Does L-Dex Help You?
The L-Dex system is best used as a series of measurements over time. This allows the healthcare professional to:
• Assess early stages of lymphedema in at-risk patients and therefore start therapy as soon as possible.
• Accurately monitor the effectiveness of therapy for those who already have lymphedema.
_______A hypothetical example of tracking one patient’s L-Dex
What’s The Clinical Research?
Clinical research validating the use of our products is abundant.
Read all about it here at ImpediMed.com
More Information for Medical Professionals:
More information and links are available on our Medical Professionals page HERE.
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