Question

1The physician has ordered 100ml 5 % dextrose in water (D5W) with 10 units IV oxytocin. Begin at 2 mU/min and then increase by 2 mU every 30 minutes until regular contracts occur. Maximum dose is 20mU/min. a. What is the IV rate ml/hr for the beginning infusion? b. What is the maximum IV rate the oxytocin infusion maybe set for? 2The physician has ordered 1000 ml Lactated Ringers (LR) with 20g magnesium sulfate. IV bolus with 6gm over 30 mins and then maintain a continuous infusion at 3g/h. a. What is the IV rate (ml/hr) for the bolus order? b. What is the IV rate (ml/hr) for the continuous infusion? 3An infant weighs 7lbs. The infant needs Tylenol for pain following a circumcision. The recommended dose is 10-15 mg/kg/dose q 4-6 hr. a. What is the minimum recommended dose in MG b. What is the maximum recommended dose in MG 4The doctor has ordered 40 mg of acetaminophen q 4-6 hr. for fever in a septic infant. The child weighs 6lbs. The Recommended dose range for acetaminophen is 10-15 mg/kg/dose q 4-6 hr. Acetaminophen is supplied as 160mg/5ml. a. Is the ordered dose safe and therapeutic to administer? b. If the dose is safe and therapeutic, how many milliliters will be needed? SAn infant is prescribed Ampicillin for sepsis. The infant weighs 9lbs. Calculate a safe and therapeutic dosage range for this infant. Recommended dosage is 200-400mg/kg/24 hr. q 4-6 hr. a. Minimum recommended dose. b.Maximum recommended dose.

Answer 1

answer 1.

Order

Oxytocin

PRESCRIPTION DOSE IS 2 mu/ min or the desired dose = 2 mu / min

dose on hand = 10 units / 500 ml or,

= 0.2 units / ml

= 20 mu / ml

ANSWER A

desired dose X dose concentration

2mu / min X ml / 20 mu  = 0.1 ml/min

= 0.1 ml / min X 60 min / hr

= 6 ML/HOUR

ANSWER B

MAXIMUM IV RATE THAT IT CAN BE SET FOR IS,

desired dose X dose concentration

20 mu / min X ml / 20  mu = 1 ML/ MIN

= 1 ml/min X 60 min / hr

= 60 ml/ hour

Answer 2.

ORDER

magnesium sulphate 20 g

dilution= 1000 ml

1000 ml = 20g

1ml= 20 / 1000

= 0.02 gm

= 0.02 gm in 1ml

   30 ml= 6gm FOR 30 MIN

SO , 60 ML WILL BE ORDERED FOR 1 HOUR

FLOW RATE =   TOTAL VOLUME / TIME IN HOUR

= 60 ML / 1 HOUR

= 60 ML/ HOUR

ANSWER B

   FRM ABOVE EQUATION IT CAN BE CONCLUDED THAT

6 GM = 30 ML,

3 GM = 15 ML

      FLOW RATE =   TOTAL VOLUME / TIME IN HOUR

= 15 ML / 1 HOUR

= 15 ML/HR

ANSWER 3

INFANT WEIGHT= 7 LBS

= 3.175 KGS

ORDER TYLENOL 10 TO 15 MG/ KG

MINIMUM DOSE = 10 MG / KG / DOSE

= PATIENT WEIGHT X DOSE/

= 3.175 kG X 10 MG

= 31.75 MG / KG/ DOSE

MINIMUM ORDER IS 31.75 MG/ KG/DOSE

ANSWER B

MAXIMUM DOSE = 15 MG / KG / DOSE

= PATIENT WEIGHT X DOSE

= 3.175 kG X 15 MG

= 47.6 MG / KG/ DOSE

MAXIMUM ORDER IS , 47.6  MG/ KG/DOSE .

  

ANSWER 4

CHILD WEIGHT = 6 LBS

= 2.722 KGS

DOSE= 40 MG ACETAMINOPHEN FOR 4 TO 6 HOUR

AVAILABLE DOSE IS 160 MG / 5 ML

1ML = 32 MG

THERAPEUTIC DOSE = PATIENT WEIGHT x DOSE

= 2.722 KG X 10 MG

= 27.22 MG/ KG/ DOSE

= 28 MG APPROX

LESS THAN 1 ML CAN BE GIVEN

HENCE, THE DOSE IS SAFE TO ADMINISTER THE CHILD.

ANSWER B

IF THE DOSE IS SAFE THEN SLIGHT LESS THAN 1 ML CAN BE GIVEN AS 1 ML CONTAINS 32 MG WHICH IS NEAR TO 28 MG.