Noninvasive determination of hemoglobin and hematocrit using a temperature-controlled localized reflectance tissue photometer.

摘要: Abstract We performed visible/near-infrared optical measurements on the forearm of human subjects. conducted four studies: one study using a commercial diffuse reflectance spectrometer, and three studies breadboard temperature-controlled localized tissue photometer. Calibration relationships were established between skin signal either reference blood hemoglobin (Hb) concentration or hematocrit values (Hct). Prediction results expressed as prediction correlation coefficient ( r p ) standard error for cross-validation (CV-SEP). Using measurement, = 0.8, CV-SEP 0.9 g/dL Hb 0.7, 3.3% Hct n 40). In involving calculating absorption scattering coefficients including effect change temperature in calibration model, best 0.9, 0.8 3% 26). second population having diverse colors at 34°C, optimal model led to 2.1% 28) without deducing coefficients. Improvement was more noticeable than case Hb. The photometer used screen prospective donors with low concentration. It possible predict anemic subjects limited donor population.