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

تمرين 56

The patient: 85-year-old female, 5? 2? tall, 126 lb, CL CR of 37 mL/min, diagnosed with a complicated urinary tract infection.
Ordered: Fortaz 500 mg IV q12h
On hand: Fortaz for injection, reconstituted at 10 mg/mL
According to the package insert, the usual recommended dosage for patients with complicated urinary tract infections is 500 mg-1 g given q8-12h. For patients with renal insufficiency, the following maintenance dosages are recommended (however, if the usual dosage is less, administer the lower amount): for creatinine clearance of 31-50 mL/min, 1 g q12h; for 16-30 mL/min, 1 g q24h; for 6-15 mL/min, 500 mg q24h; for less than 5 mL/min, 500 mg q48h.