Validity of Non-Invasive Hemoglobin Measurement Using Reflective Near-Infrared Spectroscopic Imaging Method Compared with Peripheral Blood Hemoglobin Concentrations

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  • 近赤外分光画像計測法による血中ヘモグロビン測定濃度の妥当性について
  • キンセキガイ ブンコウ ガゾウ ケイソクホウ ニ ヨル ケッチュウ ヘモグロビン ソクテイ ノウド ノ ダトウセイ ニ ツイテ

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Abstract

In February, 2006, we conducted a cross-sectional survey of health and nutrition of elderly women living in Nagoya and its vicinity. The number of study subjects was 91 and their average age was 71.9 ± 5.2 (mean ± SD). We used the reflective near- infrared spectroscopic imaging method (Astrim method) for measuring non-invasive hemoglobin (Hb) and evaluated its screening validity in comparison with blood Hb concentrations as the gold standard. Hb levels resulted from the Astrim method were statistically lower than those of peripheral blood Hb. Pearson's correlation coefficient was calculated to be 0.515. The sensitivity for screening anemia (Hb < 12g/dl) was approximately 56% and specificity was 74%. The accuracy of the Astrim method for elderly people did not seem so high compared with the value for young subjects, and this method for elderly people must be carefully applied for screening anemia of elderly people.

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