ATI Dosage Calculations 3.0: Weight-Based Doses

Dosage Calculations by Weight

• Potassium Chloride Administration: For a child weighing 64 lb, administer 13.6 mL of potassium chloride (5 mEq/kg/day) divided every 6 hours. Available solution: 40 mEq/15 mL.

• Ceftazidime Dosage: A toddler weighing 22 lb requires 10 mL of ceftazidime (40 mg/kg IV bolus every 8 hr). Available dosage is 40 mg/mL.

• Gentamicin Dosage: For a client weighing 165 lb, administer 150 mg of gentamicin (2 mg/kg IM every 8 hr).

• Tobramycin Administration: A preschooler weighing 20 kg should receive 1.3 mL of tobramycin (2.5 mg/kg IM).

• Amoxicillin for Infants: Administer 3.3 mL of amoxicillin to an infant weighing 5.5 kg (30 mg/kg/day PO every 12 hr). Available solution: 125 mg/5 mL.

• Phenytoin Dosage: For a client weighing 120 lb, administer 10.9 mL of phenytoin (15 mg/kg/day PO divided into three doses). Available solution: 125 mg/5 mL.

• Weight Conversion: A toddler weighing 17 lb 9 oz equals 8 kg.

• Erythromycin Ethylsuccinate: A toddler weighing 32 lb receives 4.5 mL of erythromycin (50 mg/kg/day PO every 6 hr). Available dosage: 200 mg/5 mL.

• Potassium Gluconate Dosage: For a preschooler weighing 42 lb, administer 11 mL of potassium gluconate (3 mEq/kg/day).

• Phenytoin for Infants: An infant weighing 12 lb 4 oz should receive 13.9 mg of phenytoin (5 mg/kg/day).

• Acyclovir Dosage: A client weighing 75 lb is administered 170.5 mg of acyclovir (5 mg/kg PO every 8 hr).

• Potassium Gluconate for Children: A 50 lb child receives 22.7 mEq of potassium gluconate (2 mEq/kg every 12 hr).

• Amikacin Maximum Dose: For a client weighing 176 lb, the maximum safe dose of amikacin is 1,200 mg/day.

• Infant Weight Conversion: An infant weighing 6 lb 2 oz equals 2.8 kg.

• Infant Weight Conversion to lb: An infant weighing 11 lb 4 oz is equivalent to 11.25 lb.

• Cefdinir Dosage: A child weighing 44 lb should receive 140 mg of cefdinir (7 mg/kg PO every 12 hr).

• Valproic Acid Dosage: A child weighing 66 lb is administered 9 mL of valproic acid (45 mg/kg/day PO every 8 hr). Available dosage: 250 mg/5 mL.

• Amoxicillin for Preschoolers: A preschooler weighing 43 lb receives 3.3 mL of amoxicillin (25 mg/kg/day PO every 8 hr).

• Midazolam IM Maximum Dose: For a client weighing 132 lb, the maximum safe dose of midazolam is 4.8 mg.

• Famotidine Dosage: Administer 11.4 mg of famotidine to a child weighing 50 lb (0.5 mg/kg).

• Weight Conversion for Toddlers: A toddler weighing 20 lb 8 oz equals 9.3 kg.

• Ampicillin Dosage: For a child weighing 39.6 lb, administer 6 mL of ampicillin (50 mg/kg/day PO every 8 hr). Available dosage: 250 mg/5 mL.

• Cefaclor Dosage: A child weighing 48 lb requires 3.9 mL of cefaclor (40 mg/kg/day PO every 8 hr). Available dosage: 375 mg/5 mL.

• Infant Weight Conversion: An infant weighing 10 lb 4 oz equals 4.7 kg.

• Epoetin Alfa Administration: A preschooler weighing 40 lb receives 0.45 mL of epoetin alfa (50 units/kg SQ). Available dosage: 2,000 units/mL.