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bioimpedance Measurements

What is a Sozo Device?

SOZO™ is a bioimpedance spectroscopy device developed by ImpediMed. A SOZO™ L-Dex reading provides a detailed and individualised assessment of a patient’s extracellular fluid, intracellular fluid and total body water through bioimpedance spectroscopy in less than 30 seconds. For a more detailed explanation of the readings taken by Sozo™ watch the short video from ImpediMed below:

How a Measurement is Taken:

Preparation: 1. Remove all metal jewellery/accessories in the measurement path. This does not include items such as earrings or other piercings. 2. Remove all electronics or metal items from pockets 3. Remove stockings or socks 4. Stand still during measurement You should observe the following preparation tips to ensure the most accurate reading: 1. Empty your bladder prior to measurement start 2. Avoid exercise 2 hours prior to the reading 3. Avoid caffeine 2 hours prior to the reading 4. Avoid alcohol 12 hours prior to the reading Taking a Reading: For the best results, the Sozo test should be taken standing up. You should: 1. Distribute your body weight evenly on both feet. 2. Keep your arms relaxed with elbows at their side while your hands make contact with the electrodes. 3. Once started, the SOZO device will need approximately 20 seconds to take a complete measurement. The system will make audible clicking noises periodically as the measurement is taken. These clicking noises indicate that the process is working correctly. 4. Once the measurement is complete, the tablet will display Cole plots for review by the clinician.

L-Dex Protocol

ImpediMed recommends the following frequency of measurements for patients at risk of unilateral lymphoedema: Pre-operative baseline Years 1-3: Every 3 months Years 4-5: Every 6 months Year 6+: Annually
A Sozo machine

What is a SOZO 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 and leg (swelling occurring in only one limb) in women and of the leg in men. ImpediMed L-Dex devices are the first FDA-cleared medical devices using bioimpedance spectroscopy for this application. They have been developed to aid your doctor to clinically assess for lymphedema by measuring extracellular fluid differences in the arms or legs of women and in the legs of men. The devices produce a lymphedema index (or L-Dex) value that can help determine if you are building up excess extracellular fluid in your at-risk limb. The test takes only minutes to perform. It is painless and gives an immediate result.
An L-Dex diagram

Why Have an L-Dex Measurement?

For cancer clients, surgery involving removal of lymph nodes and/or radiation, increases the risk of developing oedema. Measuring the fluid in your limbs prior to treatment provides a baseline fluid reading for each limb that can be used after your treatment to look for signs of increasing fluid build up & the development of lymphoedema. Once you have baseline fluid results, follow up L-Dex testing will show any increase in fluid build up so that effective treatment can be given at an early stage leading to more successful results. For non cancer clients, L-Dex readings provide a starting point for treatment, guiding & measuring the success of treatment in managing oedema.
Cancer Diagnosis
L-Dex Baseline
Primary Treatment
Follow Up L-Dex
Treatment flow chart for cancer patients
L-Dex Outside Normal Range
Treatment flow chart for cancer patients
L-Dex Increase of 10 units from baseline
Clinical Assessment
Clinical Assessment
Early Intervention
Treatment flow chart for cancer patients Treatment flow chart for cancer patients
Treatment flow chart for cancer patients Treatment flow chart for cancer patients
Treatment flow chart for cancer patients Treatment flow chart for cancer patients
Treatment flow chart for cancer patients
NO
NO
YES
YES
Treatment flow chart for cancer patients

How L-Dex is used in Cancer Clients

Person taking Bioimpedence test
Mel will discuss the results of the tests with you

Bioimpedance Spectroscopy Associated With Early Detection of Breast Cancer-Related Lymphedema

Breast cancer-related lymphedema can be detected early on with bioimpedance spectroscopy (BIS), according to results of a study published in Cancer. BIS enables earlier detection of lymphedema than do other volumetric techniques, identifying even subclinical lymphedema, noted the study authors. Read more …
Section of human tissue
Retrospective study determined that BIS is more sensitive at detecting early lymphedema in breast cancer survivors
© Mandurah Oedema Clinic 2020

bioimpedance

Measurements

What is a Sozo Device?

SOZO™ is a bioimpedance spectroscopy device developed by ImpediMed. A SOZO™ L-Dex reading provides a detailed and individualised assessment of a patient’s extracellular fluid, intracellular fluid and total body water through bioimpedance spectroscopy in less than 30 seconds. For a more detailed explanation of the readings taken by Sozo™ watch the short video from ImpediMed below:

How a Measurement is Taken:

Preparation: 1. Remove all metal jewellery/accessories in the measurement path. This does not include items such as earrings or other piercings. 2. Remove all electronics or metal items from pockets 3. Remove stockings or socks 4. Stand still during measurement You should observe the following preparation tips to ensure the most accurate reading: 1. Empty your bladder prior to measurement start 2. Avoid exercise 2 hours prior to the reading 3. Avoid caffeine 2 hours prior to the reading 4. Avoid alcohol 12 hours prior to the reading Taking a Reading: For the best results, the Sozo test should be taken standing up. You should: 1. Distribute your body weight evenly on both feet. 2. Keep your arms relaxed with elbows at their side while your hands make contact with the electrodes. 3. Once started, the SOZO device will need approximately 20 seconds to take a complete measurement. The system will make audible clicking noises periodically as the measurement is taken. These clicking noises indicate that the process is working correctly. 4. Once the measurement is complete, the tablet will display Cole plots for review by the clinician.

L-Dex Protocol

ImpediMed recommends the following frequency of measurements for patients at risk of unilateral lymphoedema: Pre-operative baseline Years 1-3: Every 3 months Years 4-5: Every 6 months Year 6+: Annually

What is a SOZO 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 and leg (swelling occurring in only one limb) in women and of the leg in men. ImpediMed L-Dex devices are the first FDA- cleared medical devices using bioimpedance spectroscopy for this application. They have been developed to aid your doctor to clinically assess for lymphedema by measuring extracellular fluid differences in the arms or legs of women and in the legs of men. The devices produce a lymphedema index (or L- Dex) value that can help determine if you are building up excess extracellular fluid in your at- risk limb. The test takes only minutes to perform. It is painless and gives an immediate result.

Why Have an L-Dex Measurement?

For cancer clients, surgery involving removal of lymph nodes and/or radiation, increases the risk of developing oedema. Measuring the fluid in your limbs prior to treatment provides a baseline fluid reading for each limb that can be used after your treatment to look for signs of increasing fluid build up & the development of lymphoedema. Once you have baseline fluid results, follow up L- Dex testing will show any increase in fluid build up so that effective treatment can be given at an early stage leading to more successful results. For non cancer clients, L-Dex readings provide a starting point for treatment, guiding & measuring the success of treatment in managing oedema.

How L-Dex is used in Cancer Clients

Cancer Diagnosis
L-Dex Baseline
Primary Treatment
Follow Up L-Dex
L-Dex Outside Normal Range
L-Dex Increase of 10 units from baseline
Clinical Assessment
Clinical Assessment
Early Intervention
NO
NO
YES
YES
Mel will discuss the results of the tests with you

Bioimpedance Spectroscopy Associated With

Early Detection of Breast Cancer-Related

Lymphedema

Breast cancer-related lymphedema can be detected early on with bioimpedance spectroscopy (BIS), according to results of a study published in Cancer. BIS enables earlier detection of lymphedema than do other volumetric techniques, identifying even subclinical lymphedema, noted the study authors. Read more …
Retrospective study determined that BIS is more sensitive at detecting early lymphedema in breast cancer survivors
Mandurah Oedema Clinic
Mandurah Oedema Clinic