1. Continuous Noninvasive Hemoglobin Measurement Is Useful in Patients Undergoing Double-Jaw Surgery 
Sung-Hoon Kim, MD, Jae Moon Choi, MD, PhD, Hyun Jeong Kim, MD, PhD, Seong-Soo Choi, MD, PhD, In Cheol Choi, MD, PhD 
Journal of Oral and Maxillofacial Surgery 
Volume 72, Issue 9, Pages (September 2014)
DOI: /j.joms
Copyright © 2014 American Association of Oral and Maxillofacial Surgeons Terms and Conditions

2. Figure 1
Correlation between hemoglobin concentrations measured using a SpHb and levels of tHb. A, Before incision (correlation coefficient = 0.72; 95% confidence interval, ; slope = 0.96). B, At Le Fort I osteotomy (correlation coefficient = 0.85; 95% confidence interval, ; slope = 1.12). C, At bilateral sagittal split ramus osteotomy (correlation coefficient = 0.89; 95% confidence interval, ; slope = 1.27). D, At closure (correlation coefficient = 0.78; 95% confidence interval, ; slope = 0.88). Thick solid line, line of regression; dashed lines, 95% confidence interval of regression line; thin solid line, line of equality. SpHb, pulse CO-oximeter; tHb, arterial total hemoglobin.
Journal of Oral and Maxillofacial Surgery  , DOI: ( /j.joms )
Copyright © 2014 American Association of Oral and Maxillofacial Surgeons Terms and Conditions

3. Figure 2
Bland-Altman plot of hemoglobin concentrations measured using a SpHb and tHb in 51 patients. A, Before incision. B, At Le Fort I osteotomy. C, At bilateral sagittal split ramus osteotomy. D, At closure. Solid line, mean hemoglobin difference (bias); dashed lines, limits of agreement (±1.96 standard deviation). SpHb, pulse CO-oximeter; tHb, arterial total hemoglobin.
Journal of Oral and Maxillofacial Surgery  , DOI: ( /j.joms )
Copyright © 2014 American Association of Oral and Maxillofacial Surgeons Terms and Conditions

4. Figure 3
A, Plot of differences between hemoglobin concentrations measured using a SpHb and tHb (vertical axis) compared with tHb (horizontal axis; correlation coefficient = 0.25; 95% confidence interval, ; slope = 0.16; P = .0003; n = 204). B, Plot of SpHb and tHb difference compared with MAP (horizontal axis; correlation coefficient = −0.13; 95% confidence interval, −0.26 to 0.01; slope = −0.01; P = .062; n = 204). The difference is a positive number when the value of SpHb is higher than that of tHb. Solid line, line of regression. MAP, mean arterial pressure; SpHb, pulse CO-oximeter; tHb, arterial total hemoglobin.
Journal of Oral and Maxillofacial Surgery  , DOI: ( /j.joms )
Copyright © 2014 American Association of Oral and Maxillofacial Surgeons Terms and Conditions