Rie Tajika, Makoto Tsukuda, Atsue Ishii, Shima Okada, Yuji Kawana, Aiko Noguchi, Momoe Satoh, Yoko Taniura, Masako Hirano, Hisako Asada, Harumi Imura, Etsuko Oono
Journal of Nursing Science and Engineering 8 185-193 2021年6月30日 査読有り責任著者
To evaluate edema, the depth of surface imprint is measured. The depth is influenced by the amount of the counterforce
generated by the body. We devised a method to quantify the presence of the interstitial fluid using the counterforce
generated from the body surface during compression. This study used a pressure sensor to detect the counterforce. The
“elderly group” comprised 27 elderly people, and the “young group” comprised 12 young people. The pressure sensor was
strapped on the legs with a cuff. Air was gradually pumped into the cuff, and the counterforce received by the pressure
sensor was output. The increase in the counterforce at lower pressures was 2.15 N in the elderly group and 1.09 N in the
young group (P<0.01). The increase in the counterforce at medium pressures was 1.92 N in the elderly group and 1.38 N in
the young group (P<0.01). The increase in the counterforce at higher pressures was 1.91 N in the elderly group and 1.61 N
in the young group (P=0.14). All values are average values. Our findings indicate that it is possible to quantify the presence
of the interstitial fluid by observing the counterforce generated from the body surface during compression.
Key words: edema, body composition, quantification, elderly people