Question

The nurse is caring for a child with a urinary tract infection. the health care provider has ordered cephalexin 125 mg by mouth every 8 hours. cephalexin is available 250 mg per 5 ml. how many milliliters should the nurse administer per dose? record your answer using one decimal place.

Answer 1

Answer: 2.5ml

The question is asking how many milliliters should the nurse administer per dose.
The patient need 125mg of cephalexin every 8hour, so the patient would need 125mg of cephalexin per dose.
If the concentration of cephalexin used is 250mg/5ml, then it would need : 125mg/ (250mg/5ml)= 2.5ml