## Ideal Body Weight

PERCENTAGE ERROR? It is calculated using this equation:% ?????????? = ( ???????????? ?????????? ? ???????????????? ?????????????????????????? ?????????? ) × 100Example: You need 23.45 g of your active ingredient to compound a prescription. You have weighed the powder using the pharmacybalance, which showed 23.45 g. To double-check, you weigh thepowder again using the more accurate and reliable balance inresearch lab facility, which shows 23.4461. What is the percentageerror of the first measurement?EXPERIMENT? You are trying to measure 50 mL in a cylinder that issitting on the bench, while standing up. It seems like you have it. The you crouch to double-check, andnow it looks like you have 49 mL.? What is the error?? What percentage error is that?MWQ? What is the MWQ of your balance? What happens if you weigh something lighter????????????????????? ?????????? = ?????????????????????? × 100??????ALIQUOT CALCULATIONS? We need to weigh 5 mg Nadamycin with a balancewith sensitivity of 0.01 g. Perform aliquot calculations.?????????? ???????????? ???? ???????????????? =?????????????? ????????????????? ???????????????? × ???????? = ?????????????????? ???????????ALIQUOT CALCULATION? How do you weigh 5 mg of a narcotic on a balance withsensitivity of 4 mg to ensure a percentage error of less than 1%?BODY MASS INDEX (BMI)? What is the BMI for a 54-years-old female who weighs 172 poundsand is 58 tall? Is she underweight, normal, or overweight??????? = ???????????? (????)[???????????? ?? ]??IDEAL BODY WEIGHT (IBW)? A 50-years old woman weighs 167 pounds and is 55 tall. What is her idealbody weight? Is the ideal body weight more than actual body weight?IBW (kg) = 45.5 or 50 + (2.3 x height in inches over 5 feet)DOSING BASED ON BODY WEIGHT? Acyclovir is prescribed with dose of 10 mg/kg for a female patient who weighs211.2 pounds and is 52 tall. Use the actual body weight to calculate dose, ifthe patient is normal weight (actual body weight < 1.3 x ideal body weight),and ideal body weight if she is overweight (actual body weight > 1.3 x ideal body weight.IBW (kg) = 45.5 or 50 + (2.3 x height in inches over 5 feet)BODY SURFACE AREA (BSA)? The recommended dose of 5-fluorouracil is 750 mg/day for anaverage adult (BSA = 1.73 m2). What is the daily dose for a 12-year-old boy who is 410 tall and weighs 88 pounds??????? = ???????????? ???? ×???????????? (????)????????CREATININE CLEARANCE (CrCL)? Cockcroft-Gault equationFor men: ????????( ?????????? ) =140 ? ?????? ?????????? ×???????????(????)72 ×?????????? ???????????????????? ( ???????? )For Women: ???????? ?????????? = ???????? ?????? ?????? × 0.85CREATININE CLEARANCE (CrCL)? A 58-years-old woman who weighs 152 pounds and hasa serum creatinine level of 33 mg/L, is prescribedpiperacillin/tazobactam. The recommended dose isbased on the table attached. What is the daily dose forthe patient?For men: ????????( ?????????? ) =?????? ? ?????? ?????????? ×????????????(????)???? ×?????????? ???????????????????? ( ???????? )For Women: ???????? ?????????? = ???????? ???????????? × ??. ????CrCL (mL/min) Dose (g)> 40 3.375/4.5 g20  40 75% regular dose< 20 50% regular dose