Fat free mass index (FFMI) was determined using a bioelectrical impedance analyser (Quadscan, Bodystat, Douglas, Isle of Men, United Kingdom). The measurements were performed prior to chemotherapy, before infusion with fluids, with the patient in supine position. Two current electrodes (Bodystat Electrodes, Bodystat) were placed at the right side at the clean dorsal surfaces of hand and foot on the distal portion of the second metacarpal and metatarsal, respectively. Two detector electrodes were placed at the posterior wrist between the styloid processes of the radius and ulna and at the anterior ankle between the tibial and fibular malleoli. Fat free mass in kg was calculated as: [(height2 / BIA resistance at 50 kHz*0.401) + (gender*3.825) + (age*0.071)] + 5.102.17 Fat free mass was normalized for height and termed FFMI.
Quadscan
Manufactured by Bodystat
Sourced in United Kingdom
The Quadscan is a bioelectrical impedance analysis (BIA) device used for body composition analysis. It measures the impedance of the body to an electrical current, which can be used to estimate the amounts of fat, lean body mass, and total body water. The Quadscan provides a non-invasive and rapid assessment of these body composition parameters.
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Lab products found in correlation
2 protocols using quadscan
1
Bioelectrical Impedance Analysis for FFMI
2
COVID-19 Patient Characterization Protocol
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All examinations were performed after fasting overnight. Each subject underwent a basic medical examination with an anthropometric examination (height, weight, body mass index (BMI), waist circumference, and waist-to-hip ratio). Body composition was determined by bioimpedance analysis (BIA, Quadscan, Bodystat, UK) and expressed as skeletal muscle mass, active tissue mass (ATM, i.e., fat-free mass), and fat mass in kg and percentages respectively. Each participant filled out a questionnaire on symptoms related to COVID-19 under the guidance of a physician and a Baecke questionnaire to assess habitual physical activity [24 (link)]. Data on inpatient course (i.e., date of admission, ventilatory support, corticosteroids, etc.) were derived from available medical records.
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