Question

Melanie weighs 27 pounds. The order reads: Vancomycin 150 mg IV q 6 hours.

Recommended dosage is 44 mg/kg/24 hours. Supplied: 200 mg/5 ml.

Step 1: Weight in kg:                                                             _______________

Step 2: Maximum safe dose for 24 hours:                             _______________

Step 3: Amount ordered for 24 hours:                                               _______________

Step 4: Is the ordered dose safe?                                            _______________

Step 5: Calculate amount to be given per dose                                  _______________

Step 6: How many mg/kg/day is the patient receiving?             _______________

Answer 1

Melanie weighs 27 pounds. The order reads: Vancomycin 150 mg IV q 6 hours.

Recommended dosage is 44 mg/kg/24 hours. Supplied: 200 mg/5 ml.

Step 1: Weight in kg: - -- _______________

27 pound

1 pound = 0.45kg

27 pound = 12kg

Step 2: Maximum safe dose for 24 hours:                             _______________

44 mg/kg/24 hours.

1kg--------- 44mg

12kg ------- 44*12 = 528mg/ 24hour

Step 3: Amount ordered for 24 hours:                                               _______________

Vancomycin 150 mg IV q 6 hours.

order for 24 hour = 150 * 4 = 600mg

Step 4: Is the ordered dose safe?                                            _______________

no

because maximum safe dose is 528mg but ordered is 600mg

Step 5: Calculate amount to be given per dose                                  _____________

amount to be given per dose - 528/ 4 = 132mg

132mg/ per dose

Step 6: How many mg/kg/day is the patient receiving?

600mg /day is receving

patient weight is 12kg

mg/kg/day --- 600./12 = 50mg/kg/day