Question

In: Nursing

Trimethoprim and sulfamethoxazole (Septra) 8 mg/kg/day every 6 hours over 60 minutes x 8 doses. Weight...

Trimethoprim and sulfamethoxazole (Septra) 8 mg/kg/day every 6 hours over 60 minutes x 8 doses. Weight = 122 lb.

Weight in kilograms:

Dose Strength:

Total Strength:

Apparently the answers are: 55.45kg, 110.9mg, 443.6mg. I just want to know why this is the answer. The book does not specify why.

Expert Solution

let us first note hte information provided in the question:

Recommended dose of septra - 8 mg/kg/day every 6 hourly

Weight of the patient - 122 lb

First step:

let us convert the weight from pounds to kgs

coversion factor: 1 kgs = 2.2 poounds (lb)

therefore:

1 kg = 2.2 Ib
'x' kgs = 122 lb
by cross multiplication
x kgs = 122 lb x 1 kg / 2.2 lb
x kgs = 122 x 1 kg / 2.2
x kgs = 55.45 kgs

Therefore the weight of the patient is 122 lb = 55.45 kgs

Second step:

Let us calculate the total dose of septra:

Recommended dose of septra - 8 mg/kg/day every 6 hourly

Weight of the dose - 55.45 kgs

8 x 55.45 kgs
443.6 mg per day

Therefore, the total dose for a day = 443.6 mg / day every 6 hourly

Third step:

Septra should be given every 6 hourly in 24 hours
Therefore,
- 24 hours / 6 hours = 4 times a day.
So, the total dose of Septra 443.6 mg should be given 4 times a day
443.6 mg / 4 = 110.9 mg (dose strength) should be the given 4 times a day.

Final answer:

Weight of the patient = 55.45 kgs
Dose strength = 110.9 mg of septra 4 times a day
Total dose strength = 443.6 mg of septra over 24 hours.

Nightingale answered 2 years ago

Order: Amikacin sulpate 35 mg/kg daily, maximum dose of 15mg/kg/day in 3 divided doses every 8 hours...

Order: Amikacin sulpate 35 mg/kg daily, maximum dose of 15mg/kg/day in 3 divided doses every 8 hours Available: Amikacin sulphate 250 mg/ml Child weights 77 pounds How many milligrams will the nurse administer? How many milliliters are in each dose? Will the medication be administered in a 1ml syringe, 3-ml syringe, 5-ml syringe or 10ml syringe? Explain your answer

The physician ordered Dilaudid, 0.4 mg/kg/day, in equally divided doses every three hours to your patient...

The physician ordered Dilaudid, 0.4 mg/kg/day, in equally divided doses every three hours to your patient who weighs 132 pounds. How many milligrams of Dilaudid will the nurse administer on the 12-hour shift?

A physician orders gentamicin, 2.5 mg/kg thru an IV bag every 8 hours for an infection....

A physician orders gentamicin, 2.5 mg/kg thru an IV bag every 8 hours for an infection. The vial of medication is labeled 40.0 mg/mL gentamicin. If the patient, a child, weighs 60.5 lbs, how many milliliters will you give in a single dose (1 eight hour period)? (1.00 lb = 453.59 g)

Order: Vancomycin 12 mg/kg IV every 8 hours for an 11 year old child with a...

Order: Vancomycin 12 mg/kg IV every 8 hours for an 11 year old child with a staph infection. Supply: Vancomycin 500 mg vial to be reconstituted with 10 mL of sterile water. The child weighs 77 lb. How many ml will you draw from the vial after reconstitution? _____________________ Order: Duricef oral solution 30 mg/kg PO bid for a 7 year old child with tonsillitis. The bottle of medication is labeled 250 mg per 5 mL. The child weighs 44...

A. A client is receiving 200 mg of “X” medication every 6 hours. Assuming the half-life...

A. A client is receiving 200 mg of “X” medication every 6 hours. Assuming the half-life of the medication is 3 hours, approximately how much drug would be in the client’s body at the time of the next administration of the drug? B. A client receives 500 mg of a drug has a half-life of 6 hours. The nurse is preparing to administer the first dose at 12:00 PM. On what day and what time will the achieve plateau levels?...

The patient has an order for valproic acid (Depakote) 10 mg/kg/day PO divided into 2 doses.

The patient has an order for valproic acid (Depakote) 10 mg/kg/day PO divided into 2 doses. The patient weighs 226 lb. How much will the nurse administer for each dose? ___ mg (If needed, round to the nearest whole number.)The patient has an order for Regular insulin 18 units/hr IV. The medication available is Regular insulin 200 units in 500 mL NS. At what rate will the nurse set the infusion? ___ mL/hr (If needed, round to the nearest whole...

1. A nurse is preparing to administer Amoxicillin 7mg/kg/day PO divided equally every 6 hours to...

1. A nurse is preparing to administer Amoxicillin 7mg/kg/day PO divided equally every 6 hours to a school-aged who weighs 60 lbs. Amoxicillin oral solution 12.5mg/5ml is available. a. How many mL should the nurse administer per dose? Round your answer to the nearest whole number? b. How many mL should the nurse administer for one day? Round your answer to the nearest whole number? 2. A nurse is preparing to administer Lanoxin 0.025mg/kg/day PO divided equally every...

A pediatrician orders Cephalexin 12.5 mg/ kg by mouth (po) every 12 hours (bid). The child...

A pediatrician orders Cephalexin 12.5 mg/ kg by mouth (po) every 12 hours (bid). The child weighs 33 pounds (lbs). The pharmacist provides you with Cephalexin oral suspension 100 mg/mL. How many milliliters (mL) of Cephalexin will you administer bid? (1 kg = 2.2 lbs) HLEP! I NEED ANSWER ASAP!

Aminophylline loading dose of 5.6 mg/kg to infuse over 30 minutes for a patient weighing 50...

Aminophylline loading dose of 5.6 mg/kg to infuse over 30 minutes for a patient weighing 50 kg followed by 0.6 mg/kg/hr maintenance dose for COPD. Supply: Aminophylline 500 mg in 500 mL of D5W . How many milliliters per hour will you set the IV pump for the loading dose? How many milliliters per hour will you set the IV pump for the maintenance dose?

1. A client has Demerol 150 mg IM every 6 hours as needed for pain. The...

1. A client has Demerol 150 mg IM every 6 hours as needed for pain. The pharmacy provided Demerol 100 mg per mL. How many milliliter(s) should the nurse draw up for one dose? 2. The doctor has ordered: Synthroid 250 mcg PO every day. The available scored tablets are: Synthroid 0.25 mg. How many tablet(s) should the nurse administer for one dose? 3. The provider orders Amoxicillin 400 mg PO bid. The medication comes as 200 mg per mL....