Math and Dosage Calculations for Health Care 3rd Edition by James Whaley, Kathryn Booth, Booth Kathryn

Exercise 136

In Exercises 15, determine if the dosage ordered is safe.
The patient: 68-year-old male, 5 ft 7 in. tall, 188 lb, CL CR of 60 mL/min, and impaired renal function. Ideal weight should be 172 lb.
Ordered: Vancocin HCI 150 mg IV q6h
According to the package insert, the daily dosage for patients with normal renal function is 2 g divided into doses q6h or q12h. The daily dosage for patients with impaired renal function is 1545 mg/24 h for creatinine clearance of 100 mL/min; 1390 mg/24 h for 90 mL/min; 1235 mg/24 h for 80 mL/min; 1080 mg/24 h for 70 mL/min; 925 mg/24 h for 60 mL/min; 770 mg/24 h for 50 mL/min; 620 mg/24 h for 40 mL/min; 425 mg/24 h for 30 mL/min; 310 mg/24 h for 20 mL/min; and 155 mg/24 h for 10 mL/min.