8 Verifying Safe Dosages: BSA Method Verify safe pediatric dosage based on BSA:Determine BSA in m2.Calculate the safe dosage based on BSA: mg per m2 × m2 = X mgCompare ordered dosage to recommended dosageDecide if the dosage is safe.
9 Verifying Safe Dosages: BSA Method If dosage is safeCalculate amount to give and administer doseIf dosage seems unsafe, consult with ordering practitioner before administering
10 Verifying Safe Dosages: BSA Method Note: Recommended dosage may specify:mg per m2Mcg per m2g per m2Units per m2M units per m2mE q per m2
11 Calculation of Safe Dosage by BSA A child is 126 cm tall and weighs 23 kg.Drug order reads: Oncovin 1.8 mg IV at 10 A.M.Is this dosage safe?Recommended dosage is 2 mg per m2 .
13 Calculation of Safe Dosage by BSA Determine BSACalculate recommended dosageMg per m2 × m2 = 2 mg per m2 × 0.9 m2 = 1.8 mg
14 Calculation of Safe Dosage by BSA 3. Decide if the dosage is safeDosage ordered is 1.8 mg and 1.8 mg is amount recommended by BSA4. Calculate one dose
15 Calculation of Safe Dosage by BSA Step 1. ConvertNo conversion is necessary.Step 2. ThinkGive more than 1 mL and less than 2 mL
16 Calculation of Safe Dosage by BSA Step 3. CalculateUse ratio-proportion:X = 1.8 mL
17 BSA Nomogram Chart that estimates BSA by plotting height and weight. See page 380 in PickarBSA NomogramChart that estimates BSA by plotting height and weight.Find height and weight on columns and draw a straight line between themPoint where crosses the SA column = BSANOTE: incremental spaces are not consistent. Take care to read numbers and calibration values correctly.
18 Total Daily IV Fluid for Children Use this formula to calculate the daily rate of pediatric maintenance IV fluids:100 mL per kg per day for the first 10 kg of body weight50 mL per kg per day for the next 10 kg of body weight20 mL per kg per day for each kg above 20 kg of body weight
19 Total Daily IV Fluid for Children Child who weighs 24 kg100 mL per kg per day × 10 kg = 1000 mL per day (for first 10 kg)50 mL per kg per day × 10 kg = 500 mL per day (for next 10 kg)20 mL per kg per day × 4 kg = 80 mL per day (for remaining 4 kg)TOTAL 1580mL per day
20 Total Daily IV Fluid for Children Calculating hourly IV flow rate 1000 mL per day+ 500 mL per day+ 80 mL per day= 1580 mL per day