Clinical evidence | ImpediMed - Part 8

Clinical evidence

ImpediMed’s bioimpedance spectroscopy (BIS) devices have been studied and clinically validated in the areas of lymphedema, heart failure, body composition and veterinary BIS research.

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Heart failure
Guidelines
Lymphedema prevention
L-Dex detection limit
Validation studies
Economics quality of life
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Ward LC, Dylke E, Czerniec S, et al.

Confirmation of the Reference Impedance Ratios Used for Assessment of Breast Cancer-Related Lymphedema by Bioelectrical Impedance Spectroscopy.

Study of 172 healthy females indicates that impedance ratio thresholds are consistent with those previously identified.
In summary, new criterion thresholds for the assessment of BCRL by BIS have been determined. Although statistically different to the established reference values, the magnitude of the difference is sufficiently small to be of no practical clinical consequence. It is concluded that, in accord with the observations of Ridner et al., the present reference thresholds may be used with confidence as markers for lymphedema.

Open access: No
Ward LC, Dylke E, Czerniec S, et al.

Reference ranges for assessment of unilateral lymphedema in legs by bioelectrical impedance spectroscopy

The impedance ratio thresholds for lymphedema of the legs have been established, opening the way for BIS to become established clinically for the early detection and assessment of lower limb lymphedema.

Open access: No
Ribas, N., et al.

Longitudinal and Transversal Bioimpedance Measurements in Addition to Diagnosis of Heart Failure

This preliminary study suggests that in HF longitudinal bioimpedance measurement in leg segment provides additional information to clinical examination and could even reflect sub-clinical hyper-hydration.

Open access: Yes
Beckmann, L., et al.

Monitoring of body fluid in patients with chronic heart failure using Bioimpedance-Spectroscopy

BIS offers a good possibility to monitor the water content of a person. This can be used in monitoring decompensated CHF patients. Since most patients with acute heart failure suffer not only from lung edema, but also from edema in limbs a combination of segmental and whole body BIS measurements offers the best options to supervise the course of diseases. In this paper, both BIS measurements show a strong correlation with the water balance and weight loss.

Open access: No
Shih YC, Xu Y, Cormier JN, et al.

Incidence, treatment costs, and complications of lymphedema after breast cancer among women of working age: a 2-Year follow-up study.

Claims study of 1,877 patients for 2 years after the start of cancer treatment. 10% of patients developed lymphedema with ALND and chemotherapy associated with development. Higher medical costs associated with BCRL diagnosis ($23, 167 vs. $14,877) with higher rates of cellulitis/lymphangitis noted.
Although the use of claims data may underestimate the true incidence of lymphedema, women with BCRL had a greater risk of infections and incurred higher medical costs. The substantial costs documented here suggest that further efforts should be made to elucidate reduction and prevention strategies for BCRL.

Open access: Yes
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