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- W2922008120 abstract "Abstract Objectives Blood hemoglobin concentration measurements using a spectrophotometric method (SpHb), and inferior vena cava ultrasonography (IVC‐US) are noninvasive methods used to follow‐up hemorrhages. We compared their efficacy using voluntary blood donation as a model of moderate (approx. 500 mL) blood loss. Methods In this prospective observational study enrolling blood‐donor volunteers (BD) and matched controls, we recorded SpHb, IVC diameters, and vital signs. Changes in variables from baseline were compared between BD and controls using the paired t test and Wilcoxon signed rank test. Results We included 118 subjects in the BD group and 95 healthy subjects in the control group. Changes in IVC maximum diameter, IVC minimum diameter, pulse rate, mean arterial pressure, pulse pressure, and shock index, but not in other variables, were significantly different in the BD and the control group ( P < 0.05). IVCmax ≥1.1 mm yielded a 74% sensitivity and 77% specificity (PPV 79.8%, NPV 70.2%) in detecting early hemorrhage. With these cutoff values, IVCmax or PR reached a 90% sensitivity, while IVCmin and PR reached 98% specificity. Conclusions IVC ultrasound may be superior to SpHb in predicting blood loss and may be useful in addition to vital signs for its follow‐up." @default.
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- W2922008120 date "2019-03-14" @default.
- W2922008120 modified "2023-10-18" @default.
- W2922008120 title "A comparison of noninvasive methods for early detection of hemorrhage: Inferior vena cava ultrasonography and spectrophotometric hemoglobin levels" @default.
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- W2922008120 doi "https://doi.org/10.1002/jcu.22709" @default.
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