This Question: 2 pts Question Help * The order is for gentamicin 225 mg IV q.8h

Question

This Question: 2 pts Question Help * The order is for gentamicin 225 mg IV q.8h for a patient who weighs 253 Ib. The drug reference manual states the following about gentamicin: IM, V (Adults: 1-2 mg Ikg q 8h. (up to 6 mg/kg / day in three divided doses). What is the maximum safe dose for this patient? Is the ordered dose safe? O A. The maximum safe dose is 230 mg q8h. The ordered dose is not safe O B. The maximum safe dose is 506 mg q.8h. The ordered dose is safe OC. The maximum sale dose is 506 mg q 8h. The ordered dose is not safe O D. The maximum safe dose is 230 mg q,8h. The ordered dose is safe. see s

Explanation / Answer

conventional dosing; Gentamycin 1-2 mg/kg/day ( upto 6 mg /kg/day in three divided doses)IV/IM divided q8hr.
253 lbs= 114.7kgs
calculating dose of Gentamycin is,
minimum dose (1 mgx114.7kg) 114.7 mg for given body weight (253 lb) q.8h
maximum dose (6 mgx114.7kg) 688.2 mg for given body weight (253 lb) q.8h

ANSWER-yes,ordered dose is safe.MAXIMUM dose(688.2 mg) is more than ordered dose (225 mg)
*correct answer is - *B.The maximum safe dose is 506 mg q.8h.the orderes dose is safe,as the maximum dose for patient weight(253 lb)is 688.2 mg in three divided doses.

A.the maximum safe dose is 230 mg.q 8h.the dose is not safe -is wrong,here the dosage near to minimum dose for given body weight and dosage reference.
C.the maximum safe dose is 506 mg.the ordered dose is not safe-is wrong,ordered dose is less than maximum dose for given body weight and doasge reference.
D.the maximum safe dose is 230 mg.q.8h.the ordered dose is safe-also shows wrong dosage ,it is also almost equal to minimum dose for given body weight and doasge reference.

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