Dosage Calculations - Questions And
Answers
A male client receives a prescription for ondansetron
hydrochloride (Zofran) 4 mg IV to prevent postoperative nausea
after an inguinal hernia repair. The medication is available in 2
mg/ml. How many ml should the nurse administer? (Enter numeric
value only.)
Use ratio and proportion, 4 mg : X ml = 2 mg : 1 ml 2X = 4 X =
2
Correct Answer:- Use ratio and proportion, 4 mg : X ml = 2 mg
: 1 ml 2X = 4 X = 2
The nurse is preparing to administer Hepatitis B Vaccine,
Recombinant (Energix-B) 5 mcg IM to a school-aged child. The
vaccine is labeled, 10 mcg/ml. How many ml should the nurse
administer? (Enter numeric value only. If rounding is required,
round to the nearest tenth).
Correct Answer:- Use ratio and proportion, 5 mcg : X ml :: 10
mcg : 1ml 10X = 5 X = 0.5 ml
At the end of the shift, the nurse is recording the fluid balance for
a client receiving a continuous gastrostomy tube (GT) feeding.
Based on the client's records, how many ml should the nurse
record for the total fluid balance (intake - output) for the shift that
started at 0700 and ended at 1900? (Enter numeric value only.)
(Click on each image asset for additional information.)
, Correct Answer:- 695
The tube feeding is administered at 75 ml/hour for 11 hours (0700
- 1800) and then turned off for one hour because the residual is
greater than 200 ml. 11 hours x 75 ml/hr = 825 ml. Three doses of
20 ml of medication are administered, with 10 ml of water used to
flush the GT before and after each dose. 20 ml x 3 doses = 60 ml;
10 ml (flush) x 2 x 3 doses = 60 ml; so 825 ml + 60 ml + 60 ml =
945 ml. 250 ml of residual is removed and not replaced. 945 ml -
250 ml = 695 ml total fluid balance (Intake - output).
A 180-pound adult male is admitted to the Emergency Center after
receiving thermal burns to 60 percent of his body. Using the
Parkland formula of 4 ml/kg/24 hours, the client should receive
how many ml of fluid during the first 24 hours? (Enter the numeric
value only. If rounding is required, round to the nearest whole
number.)
Correct Answer:- 19632
Using the Parkland formula, the client's fluid requirements for the
first 24 hours after injury: 4 ml lactated Ringer's solution x Body
weight (in kilograms) x Percent burn. Convert 180 pounds to kg =
.2 = 81.8 kg 4 ml x 81.8 kg x 60 = 19632 ml over the first
24 hours.
The healthcare provider prescribes acetazolamide (Diamox) 600
mg/m2/day divided into 3 doses. The nurse calculates the child's
body surface area (BSA) as 0.7 m2. How many mg should the
child receive per dose? (Enter the numeric value only.)
Correct Answer:- Using the child's BSA, 0.7 m2, calculate the
mg/dose, 600 mg x 0.7 m2 = 420 mg/day/3 doses = 140
mg/dose
A loading dose of acetylcysteine (Mucomyst) 8 grams, which is
available as a 20% solution (200 mg acetylcysteine per ml) is
Answers
A male client receives a prescription for ondansetron
hydrochloride (Zofran) 4 mg IV to prevent postoperative nausea
after an inguinal hernia repair. The medication is available in 2
mg/ml. How many ml should the nurse administer? (Enter numeric
value only.)
Use ratio and proportion, 4 mg : X ml = 2 mg : 1 ml 2X = 4 X =
2
Correct Answer:- Use ratio and proportion, 4 mg : X ml = 2 mg
: 1 ml 2X = 4 X = 2
The nurse is preparing to administer Hepatitis B Vaccine,
Recombinant (Energix-B) 5 mcg IM to a school-aged child. The
vaccine is labeled, 10 mcg/ml. How many ml should the nurse
administer? (Enter numeric value only. If rounding is required,
round to the nearest tenth).
Correct Answer:- Use ratio and proportion, 5 mcg : X ml :: 10
mcg : 1ml 10X = 5 X = 0.5 ml
At the end of the shift, the nurse is recording the fluid balance for
a client receiving a continuous gastrostomy tube (GT) feeding.
Based on the client's records, how many ml should the nurse
record for the total fluid balance (intake - output) for the shift that
started at 0700 and ended at 1900? (Enter numeric value only.)
(Click on each image asset for additional information.)
, Correct Answer:- 695
The tube feeding is administered at 75 ml/hour for 11 hours (0700
- 1800) and then turned off for one hour because the residual is
greater than 200 ml. 11 hours x 75 ml/hr = 825 ml. Three doses of
20 ml of medication are administered, with 10 ml of water used to
flush the GT before and after each dose. 20 ml x 3 doses = 60 ml;
10 ml (flush) x 2 x 3 doses = 60 ml; so 825 ml + 60 ml + 60 ml =
945 ml. 250 ml of residual is removed and not replaced. 945 ml -
250 ml = 695 ml total fluid balance (Intake - output).
A 180-pound adult male is admitted to the Emergency Center after
receiving thermal burns to 60 percent of his body. Using the
Parkland formula of 4 ml/kg/24 hours, the client should receive
how many ml of fluid during the first 24 hours? (Enter the numeric
value only. If rounding is required, round to the nearest whole
number.)
Correct Answer:- 19632
Using the Parkland formula, the client's fluid requirements for the
first 24 hours after injury: 4 ml lactated Ringer's solution x Body
weight (in kilograms) x Percent burn. Convert 180 pounds to kg =
.2 = 81.8 kg 4 ml x 81.8 kg x 60 = 19632 ml over the first
24 hours.
The healthcare provider prescribes acetazolamide (Diamox) 600
mg/m2/day divided into 3 doses. The nurse calculates the child's
body surface area (BSA) as 0.7 m2. How many mg should the
child receive per dose? (Enter the numeric value only.)
Correct Answer:- Using the child's BSA, 0.7 m2, calculate the
mg/dose, 600 mg x 0.7 m2 = 420 mg/day/3 doses = 140
mg/dose
A loading dose of acetylcysteine (Mucomyst) 8 grams, which is
available as a 20% solution (200 mg acetylcysteine per ml) is
