Question

Plz help answer these 3 questions

CHEM 1406 / MEDICAL DOSAGE HOMEWORK #12/ CHAPTER 12 / 5 POINTS NAME: CHEM 1406 Calculating Pediatric Dosages Directions: Show your work on these five problems. Show logical setups and please be neat DUE BY: DMC and orderly #01. (1 pt) A physician's order reads the following: Erythromycin 10mg/kg PO q8h. If the child weighs 30 kg how much of the drug, in mg, will you administer? #02. (1 pt) A recommended dose of ceftazidime for an infant weighing 26 kg is 30 mg kg IM every 12 hours. How much of this medication will should be administered over this 12-hour period? Do not round off #03. (1 pt) A physician orders an antibiotic 25 mg /VPB q8h for a child. The antibiotic is supplied in vials with a strength of 10 mg/mL. How many milliters should you withdraw from the vial? Do not round off

Answer 1

1 Ans. Prescription is 10 mg/kg PO q8h

That is, for every 1 kg of body weight, 10 mg of erythromycin has to be administered.

Weigh of the child = 30 kg

For 30 kg, the amount of erythromycin to be administered is

= 30kg x 10 mg/kg

= 300 mg

Therefore, 300 mg of the drug has to be administered within an 8 hour period.

2 Ans. Prescription is ceftazidime 30 mg/kg IM every 12 hours

That is, for every kg of weight 30 mg of the drug has to be given.

Weight of the infant = 2.6 kg

So, for the infant whose weight is 2.6 kg, the amount of drug to be administered is

= 2.6kg x 30 mg/kg

= 78 mg

Therefore, 78 mg of the drug has to be administered (IM) within a 12 hour period.

3 Ans. The prescription is 25 mg IVPB q8h

The vial has antibiotic in it with a strength of 10 mg/mL

That is, 10 mg of antibiotic is present in 1 mL of the solution in the vial.

So, 1 mg of antibiotic will be present in

= 1mg/(10 mg/mL)

= 0.1 mL

25 mg of the antibiotic will be present in

= 25 x 0.1 mL

= 2.5 mL

Therefore, 2.5 mL should be drawn from the vial.