2019 Nelson’s Pediatric Antimicrobial Therapy 263 Appendix: Nomogram for Determining Body Surface Area Nomogram and equation to determine body surface area. (From Engorn B, Flerlage J, eds. The Harriet Lane Handbook. 20th ed. Philadelphia, PA: Elsevier Mosby 2015. Reprinted with permission from Elsevier.) Appendix Nomogram for Determining Body Surface Area Based on the nomogram shown below, a straight line joining the patient’s height and weight will intersect the center column at the calculated body surface area (BSA). For children of normal height and weight, the child’s weight in pounds is used, and then the examiner reads across to the corresponding BSA in meters. Alternatively, Mosteller’s formula can be used. 1.30 80 70 60 50 40 30 25 20 15 10 9.0 8.0 7.0 6.0 5.0 4.0 3.0 2.5 2.0 1.5 1.0 1.20 1.10 1.00 .90 .80 .70 .60 .55 .50 .45 .40 .35 .30 .25 .20 .15 .10 240 180 160 140 130 120 110 100 90 80 70 60 50 45 40 35 30 25 20 18 16 14 12 10 9 8 7 6 5 4 3 90 2.0 1.9 1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 80 60 70 50 30 40 20 15 10 9 8 7 6 5 4 3 2 220 200 190 180 170 160 150 140 130 120 110 100 90 80 70 60 50 40 30 85 80 75 70 65 55 50 45 40 35 30 28 26 24 22 20 18 17 16 15 14 13 12 19 60 cm in lb m2 kg For children of normal height for weight W eight in pounds Surface area in square meters Height Weight Height (cm) x Weight (kg) 3600 Alternative (Mosteller’s formula): Surface area (m2) = Nomogram SA ch15-App-Nelson-2019_263-264.indd 263 11/27/18 8:21 AM
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