High‐Resolution Three‐Dimensional Photonic Scan‐Derived Equations Improve Body Surface Area Prediction in Diverse Populations. Issue 4 (26th February 2020)

• Record Type: Journal Article
• Authors: Ashby‐Thompson, Maxine; Ji, Ying; Wang, Jack; Yu, Wen; Thornton, John C.; Wolper, Carla; Weil, Richard; Chambers, Earle C.; Laferrère, Blandine; Pi‐Sunyer, F. Xavier; Gallagher, Dympna
• Is Part Of: Obesity. Volume 28:Issue 4(2020)
• Page Start: 706
• Page End: 717
• Publication Date: 2020-02-26
• Subjects: Obesity -- Periodicals; 616.398005
• DOI: 10.1002/oby.22743
• Languages: English
• ISSNs: 1930-7381

Abstract

Abstract : Objective: Equations for predicting body surface area (BSA) produce flawed estimates, especially for individuals with obesity. This study aimed to compare BSA measured by a three‐dimensional photonic scanner (3DPS) with BSA predicted by six commonly cited prediction equations and to develop new prediction equations if warranted. Methods: The 3DPS was validated against manual measurements by breadth caliper for body thicknesses measured at three anatomical sites on a mannequin. BSA was derived from 3DPS whole‐body scans of 67 males and 201 females, aged 18 to 83 years, with BMI between 17.8 and 77.8 kg/m 2 and varied races/ethnicities. Results: Width and depth measurements by 3DPS and caliper were within 1%, except for hip, with an error of 1.8%. BSA3DPS differed from BSA predicted by each equation ( P < 0.05), except for males by DuBois and DuBois ( P = 0.60), Tikuisis ( P = 0.27), and Yu ( P = 0.45) and for females by Tikuisis ( P = 0.70). The combined and sex‐specific equations obtained by regressing ln(BSA) on ln(weight in kilograms [W]) and ln(height in meters [H]) are as follows ( R 2 and SEE correspond to ln[BSA]): combined, BSA3DPS = 0.03216 × W 0.4904 × H 0.3769, R 2 = 0.982, SEE = 0.021; males, BSA3DPS = 0.01624 × W 0.4725 × H 0.5231 ; and females, BSA3DPS = 0.01522 × W 0.4921 × H 0.5231, R 2 = 0.986, SEE = 0.019. Conclusions: New height and weight BSA equations improve BSA estimation in individuals with BMI ≥ 40 and in African Americans, Hispanic Americans, and Asian Americans.