Conversions

Calculate Childs dosage using Body Surface Area( BSA)

Childs BSA / Adult BSA ( Adult dosage)= Childs dosage Adult BSA= 1.73

The primary health care provider's prescription reads "phenytoin 0.2 g orally, twice daily." The medication label states 100-mg capsules. How many capsule(s) would the nurse plan to administer over a 24-hour period? Fill in the blank.

Formula:DesiredAvailablexcapsule(s) = capsule(s) per dose 200 mg/100 mgx1 capsule = 2 capsule per dose. The question asks for the number of capsule(s) for a 24-hour period. Because the medication is administered twice daily, the total daily number of capsule(s) is 4.

A client with cardiogenic shock weighs 220 lb and is receiving dopamine at the rate of 3 mcg/kg/minute. The solution strength available is dopamine 400 mg in 250 ml of D5W. The nurse should set the infusion pump to deliver how many ml/hour? (Enter numeric value only. If rounding is required, round to the nearest tenth.)

1. convert lb to kg, Mg to Mcg 220/2.2=100kg, 400mcg X 1000= 400,000mcg 2. Calculate amount needed 3mcg X 100kg= 300 mcg 3. Convert Calculate total volume amount 300mcg/400,000=0.00075 mcg ( 250 ml)= 0.1875 ml 4. Calculate ml/hr 0.1875 X 60min = 11.25 (round to the nearest tenth.) Answer= 11.3 Another way to solve ( confusing): First, convert pounds to kg, 220 lb : X = 2.2 lb : 1 kg = 100 kg. Next, calculate the dosage per minute, 3 mcg/kg/min x 100 kg = 300 mcg/min. Convert mcg/min to mcg/hour, 300 mcg/min x 60 min=18,000 mcg/hour. Convert mcg/hr to mg/hour, 18,000 mcg/hr = 18.0 mg/hour. Calculate the rate, 400 mg : 250 ml = 18 mg : X ml 400X = 4500 X = 11.25 = 11.3 ml. So, 18 mg/11.3 ml should be infused at 11.3 ml/hour.

The nurse is asked to regulate the flow rate of an intravenous (IV) solution being administered to a client. The IV bag contains 50 mL of solution, and the solution is to be administered over 30 minutes. The administration set has a drop factor of 10 drops (gtts)/mL. The nurse would regulate the roller clamp on the infusion set to deliver how many drops per minute? Fill in the blank. Round answer to the nearest whole number.

Formula:Total volumeTime in minutesxdrop factor = gtts per minute50 mL30 minutesx10 gtts/mL = 16.66, or 17 gtts/minute

Order: amoxicillin (Amoxil) 60 mg, po, tid. Pediatric dosage for children 20-40 mg/kg/day in three equal doses. Child's weight: 12½ lb. have on hand 125mg/5mL is this 6o mg considered a safe dose? if so how many ml to administer?

pounds converted: 12.5Ib/2.2kg=5.68 kg 5.7kgX20mg=114 5.7kgX40mg=228 The order for amoxicillin 60 mg, po, tid means that three doses will be given per day.60 mg × 3=180 mg14317Because the daily dose of amoxicillin 180 mg falls within the recommended range, it is considered a safe dose. . need =60mg have 125mg/5mL 60/125(5)=2.4ml answer= yes, 2.4ml

1L=__mL

1000mL

Change 120 milliliters to ounces.

120 mL ÷30mL = 4 oz

1 tablespoon (tbsp) = ____ ml

15 mL

Adult BSA=

1.73 m

The health care provider orders morphine sulfate 2 mg IV. The medication is available in a vial containing 10 mg/mL

2 mg/ 10mg =0.2 ml

1lb=__kg

2.2kg

A client is to receive 1000 mL of 5% dextrose in water at a rate of 125 mL/hr. The drop (gtt) factor is 10 drops (gtts)/mL. The nurse sets the flow rate at how many drops per minute? Fill in the blank. Record your answer to the nearest whole number.

The first step is to determine how many hours the IV administration will infuse. This requires simple division of the total volume of milliliters to be infused (1000 mL) by the total milliliters per hour (125 mL). This calculates to 8 hours and is then converted to minutes, which is 480 minutes (8 hours × 60 minutes). Next, use the formula to calculate the flow rate. 1000/480(10)=20.8 21 rounded

The primary health care provider prescribes 1000 mL of 5% dextrose in water (D5W) to run at 125 mL/hr. The nurse calculates the infusion rate, knowing that it will take how many hours for 1 liter (L) to infuse? Fill in the blank.

divide the 1000 mL by the amount being delivered in 1 hour. Formula:Total volume in mL mL/hour=infusion time in hours 1000 mL/125 mL=8 hours

To convert larger to smaller?

move the decimal point three places to the right. Therefore,

Drop rate formula?

total volume/time in minutes X gtt per minute= drop rate

A patient's healthcare provider ordered 100 mg of phenytoin to be administered in a gastric tube. The solution comes in a bottle labeled Phenytoin 125, MG/5 ML. how many ml do you need to give?

"Orders" divided by "have" multiplied by quantity. orderd= 100 mg have= 125 mg quantity= 5ml 100/125= 0.8 0.8(5ml)= 4 ml Answer= 4 mL

The primary health care provider (PHCP) has prescribed an antibiotic for a child. The average adult dose is 500 mg. The child has a body surface area (BSA) of 0.63 m2. What is the dose for the child?

0.63/1.73x500 mg = 182 mg

A patient is to receive 1 g of a medication PO daily. The medication should be given in four equally divided doses. How many milligrams should the patient receive each time the medication is administered?

1 g= 1000 mg 1000 mg/ 4 times a day answer = 250 ml

1 g = ___ mg

1000 mg

8 mg= ____________g

1000 mg= 1 gram 1000mg/8= 0.008 The conversion is going from smaller to larger thus division, or moving the decimal point to the left is indicated. 8 mg= 0.008

1kg=__g

1000g

A primary health care provider prescribes 1000 mL of 0.9% normal saline (NS) to run over 8 hours. The drop (gtt) factor is 10 drops (gtt) per 1 mL. The nurse adjusts the flow rate to run at how many drops per minute? Fill in the blank. Record your answer to the nearest whole number.

21 The prescribed 1000 mL is to be infused over 8 hours. Follow the formula and multiply 1000 mL by 10 (gtt factor). Then divide the result by 480 minutes (8 hours × 60 minutes). The infusion is to run at 20.8 or 21 gtt/minute.

1 cup = __ mL and __ oz

240 mL (8 oz)

0.25 gram =__mg?

250 mg

1 ounce = ___ mL

30 mL

How many mL does a bottle of medication contain if the bottle contains 90 drams?

333 mLThere are 3.7 mL in each dram. Therefore 90 drams is equivalent to 3.7mL x 90 drams or 333 mL.

The nurse is preparing to administer a continuous tube feeding to a client with a nasogastric tube. The primary health care provider has prescribed an amount of 100 mL/hr. The tube feeding setup is an open system, a bag that has formula added at intervals. How much formula would the nurse plan to add to fill the feeding bag?

400 Feeding can be hung at room temperature for a period of 4 hours. If 100 mL/hr is prescribed, the nurse should fill the feeding bag with a maximum amount of 400 mL. Feeding hung longer than 4 hours at room temperature creates the risk of bacterial invasion in the formula.

1 teaspoon (tsp) = ____ ml

5 mL

A patient's health care provider orders 0.5 G of ampicillin to be given IM q8h. You have a vial of ampicillin that says 250 mg/mL. Calculate the dose to administer

Need= 0.5 g have= 250 mg 1. Convert g to mg 0.5g= 500 mg 2. 500 mg/ 250 mg= 2ml Answer= 2 mL

The physician orders 40 mg of furosemide Lasix . an ampule of furosemide labeled Lasix 20 mg/mL is available.

Need= 40mg have = 20 mg 40 mg/ 20 mg= 2 mg 20 mg( 1 mL)= 2 ml Answer= 2 mg

you patient needs to receive Demerol(meperidine) 50 mg, the medication is available only in ampules containing 100 mg in 1 mL

Ordered= 50 mg have= 100 mg quantity = 1mL 50 mg/ 100 mg= 0.5 mg 0.5(1 mL)= 0.5 mL Answer = 0.5 mL

A child who is scheduled for a kidney transplant receives a prescription for basiliximab (Simulect) 20 mg IV 2 hours prior to surgery. The medication is available in a 20 mg vial that is reconstituted by adding 5 ml sterile water for injection, and administered in a 50 ml bag of normal saline over 30 minutes. The nurse should program the infusion pump to deliver how many ml/hour? (Enter numeric value only.

need: 20 mg have 20 mg/50ml bag reconstituted = 5ml time= 30 min calculate volume: 20mg/20mg=1 1 mg X 50 mL= 50 mL 50 mL+ 5 mL( reconstitution)= 55 ml calculate flow rate total Vl/time in min X gtt ( 60) 55 mL/30 min X 60 gtt= 110 Ml/hr Answer= 110 Ml/hr

A client who weighs 70 kg is receiving a dopamine solution of 800 mg/500 ml normal saline at 5 ml/hour. How many mcg/kg/minute is the client receiving? (Enter numeric value only. If rounding is required, round to the nearest tenth.)

need: 5 ml have: 500ml (800mg) N5 mL divided by H500 mL= 0.01 0.01 X800mL=8 mg Convert 8mg to mcg 8mg X 1000 mcg=8000 mcg. Calculate formula - mcg/kg/minute 8000mcg Divided by 70 Kg=114.28 114.28 divided by 60 min= 1.9 Answer 1.9 mcg/kg/min

Order: ampicillin 350 mg, IV, q6h. Pediatric dose is 25 to 50 mg/kg/day in divided doses. Drug available: When diluted, 500 mg = 2 mL. Use your selected formula to calculate the dosage. Child's weight and age: 61.5 lb and 9 years old .Dilution instructions: Mix with 20 mL of D5/1/4 NSS; infuse over 20 minutes.Flush with 15 mL.

need= 350mg have = 500 mg/2 mL Pediatric dose is 25 to 50 mg/kg/day in divided doses. Childs weight= 61.5 lb 61.5lb/2.2kg= 28 kg 28kg(25mg)=700mg- safe to give to childe 350mg/500mg (2mL)= 1.4mL mount of fluid to infuse medication:1.4 mL + 20 mL (dilution) = 21.4 mL flow rate = vl/hr(in min)Xgtt (60 if not specified) 21.4/20(60gtt)=64.2 mL

A client has just delivered an 8-pound 8-ounce infant boy after a prolonged labor. The pediatrician prescribes ampicillin 50 mg to be given by the intramuscular route to the newborn every 8 hours. The nurse is initiating the first dose. Ampicillin is available in powder form for injection. The directions on the bottle indicate reconstitution with 0.9 mL of sterile diluent for a concentration of 125 mg/mL. How many milliliters (mL) would the nurse prepare to administer for the first dose? Fill in the blank. Record the answer to one decimal place.

0.4 ml its the same ol formula, with a bunch of useless numbers. cross out the distractions and calculate need/have(quantity= amount OR Desired/AvailablexVolume = mL 50 mg/125 mg(1 mL0 = 0.4 mL

Order: Cefadroxil 1 g PO. Available: 500 mg capsules. How many capsules will the nurse administer?

1 g= 1000 mg need: 1000 mg have: 500 mg 1000mg/ 500mg = 2 caps Answer: 2 capsules

erythromycin (ERY-TAB) 0.5 g, po, q8h. Drug available: 250 mg

1 g= 1000 mg need=.5 g( 500 mg) 500 mg/250 mg= 2 tablets

aspirin (ASA) gr X, PRN. Drug available: aspirin 325 mg per tablet.

1 gr= 65 mg X= 10 gr 65(10)= 650 mg Need : 650 mg have : 325 mg Calculate: 650 mg/325 mg= 2 tablets Answer= 2 tablets

1mg=__mcg

1000mcg

1g=__mg

1000mg

The prescriber orders the patient to receive morphine sulfate 2 mg IV (dose ordered). The medication is available in a vial containing 10 mg (dose on hand) in 1 mL (amount on hand). What's the amount of ML to administer?

Need : 2 mg have: 10 mg quantity: 1 mL 2mg/10mg= 0.2 x 1 ml= .2 mL answer = 0.2 ml

The prescriber orders 0.125 mg orally (PO) of digoxin. The medication is available in tablets containing 0.25 mg. How many tablets to you administer?

Need: 0.125 mg have: .25 mg 0.125mg/.25mg= .5 answer= half of a tablet .5

The order is "erythromycin suspension 250 mg PO." The pharmacy delivers 100-mL bottles with the label stating, "5 mL contains 125 mg of erythromycin."

Need: 250 mg have : 125 mg Quantity : 5 mL 250/125= 2(5 mL)=10 mL answer= 10 mL

1 dram = ? mL

3.7 mL

Change 5 ounces to milliliters (mL). 5 oz ×30 = 150 mL

5 oz ×30 = 150 mL 1 oz = 30 mL 5oz x30ml =150 mL

meperidine (Demerol) 60 mg, IM, STAT. Drug available:100 mg/mL

60mg/100mg(1ml)=0.6 mL

Order: amoxicillin 75 mg, po, qid. Drug available: 125 mg/5 mL

75mg/125mg(5mL)= 3 mL