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Intravenous Fluids

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TUBING CALIBRATIONS

MACROTUBING10 gtt / cc

15 gtt / cc

20 gtt / cc

printedon

Package Called

Set calibration

•You MUST know that a microdrip or microdrop set or minidrip or minidrop set always= 60gtts/cc.

MICRO TUBING = 60 gtts / cc

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3

IV Flow Rates

Expressed: cc/hr and gtt/min

1. Find the cc/hr flow rate

2. Find the gtts/min flow rate

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MEMORIZE FORMULA

VOLUME TIME = CC/HR. (in cc) (in hrs)

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IV Flow Rates

Examples cc/hr.

#1 Order: LR 1000cc over 8 hrs (Vol) 1000 ÷ 8 (time) =

125 cc/hr. Use whole # for drip rates

#2 Order: NS 500cc over 12 hrs 500 ÷ 12 = 41.6

= 42 cc/hr Use whole # for flow rates

• Example: gtts./min.

• Memorize formula:

• cc/hr. x gtt factor

60 min.

#1.

• 125cc/hr , set calibration or drop factor is 15 gtt/cc

• 125 x 15 = 31.25 or

60 31 gtts./min.6

IV FLOW RATES

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COMMON IV PROBLEM # 1

Order

1L D5LR Over 8 hrs. set calibration is

20 gtts./cc

Find

1. cc/hr.

2. gtts/min.

Common IV problem # 2

• Order: 500cc of D5W over 24hrs. Use a mini/micro dripper .

• 1. Find cc/hr

• 2. Find gtts/min.

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IV FLOW RATES

• ANYTIME YOU HAVE A SET CALIBRATION OF

60 gtts / cc

Also called drip factor/drop factor, as you do with a mini/micro dripper

cc/hr.= gtts/min.

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Example: Time < 1 hour

OrderAmpicillin 250 mg/30 cc

over 30 minsIgnore extraneous infolike medication /dose

VOLUME ONLY

Set calibration: 15gtt/cc

30cc x 15gtt/cc = 30 min

15 gtt/min

Example 2, Piggy back medications

• 1 g of Methicillin in 50cc to run over 30 minutes

• Using a micro dripper, how many drops per minute should IV run?

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Infusion Time

Total time for given volume of IVF to infuse

Infusion Time = Total Vol.cc/hr.

Example 1 = 1L NSS @ 100cc/hr.1000 = 10 hrs.100

Example 2 1L D5W @ 125/hr.1000 = 8 hrs.125

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MEDICALQUESTION OF THE

DAY

• QUESTION

• WHAT IS A

• TABLET

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PEDIATRIC IVMEDICATIONS

• I

IV MED INFUSION PUMP

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Heparin

• anticoagulant

• measured in units

• various concentration

•Concentration for sc. = 10,000 units/cc

1000 units/cc = IV heparin 100 units/cc = CL heparin flush 1o units/cc = PHL flush

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Parenteral Medications

s.c. subcutaneous

**Should be 1cc

Heparin s.c is a common one.

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SC HEPARIN

Order: 4000 units Heparin s.c. now.On Hand: Heparin 1,000 units/cc

Heparin 10,000 units/cc

Which would you chooseAnd why How much would you give

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SC Heparin

If you choose 1,000 units/ml

1000units 4000units

1 cc xcc

1000 x = 4000

x = 4 cc

TOO MUCH s.c.

So cannot go by closest concentration rule with s.c. injections, SO

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SC Heparin cont..

Choose 10,000 units / ml

10,000 units 4000 units

1cc x cc

10,000 x = 4000

x = 0.4 cc

OK for a subcutaneous

injection

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Heparin Infusion

Order1000cc D5W +

50,000 unitsheparin TRA 25 cc/hr

*How many Units/hr is your patient getting

1000 cc : 50,000 units : 25 cc = X 1000x = 1,250,000 units

X = 1,250 Units

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Order1 L D5W c 50,000units heparin

Run @ 2,000 units per hour

What is flow rate in cc/hr.

50,000 units :1,000 cc:: 2,000 units: Xcc

50,000x = 2,000,000 X = 40 cc/hr.

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HEPARIN INFUSION

• ORDER:

• 1LNS with 50,000 units Heparin @ 30cc/hr.

• How many units/hr is your patient receiving?

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INSULIN INJECTIONSnot on exam

I liked this slide

2459

Critical Care Drugs

1. Ordered by dosagesi.e., mcg/kg/min

mg/minYou will need to find cc/hr.

2. Should use IV pump! If not,use mini-dripper only!REMEMBER A MINI DRIPPER = 60 gtts / cc

3. Be sure you have like units.

4. Very potent drugs!!

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CRITICAL CARE CALCULATIONS

Order: Lidocaine 4mg/min

On Hand: Lidocaine 1g/250cc

What is IV flow rate?? cc/hr?

1. Convert to like units: 1g=1000mg

2. 1000 mg: 250 :: 4mg: x cc

1000x = 1000 x = 1cc/min.

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60

1 cc / minute, the question asked for cc/hr.!!

WE NEED HOURLY RATE SO STEP 3.

3. Multiply by 60 min. to getcc/hr

1 cc/min (60 min) = 60 cc/hr is our answer.

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OrderPronestyl 3mg/min

Have on Hand500mg Pronestyl in

250 cc D5W

Rate in cc/hr??1. No conversion necessary

2. 500 mg : 250 cc = 3 mg : Xcc

500 x = 750 X = 1.5 cc/min.

1.5 cc/ minute , we need cc/hr.

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Pronestyl

3. calculate the flow rate in cc/hr

1.5 cc/min x 60 min ( per hr) = 90 cc/hr.

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MEDICAL QUESTION

•WHAT DOES

•DILATE MEAN

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ORDER2.5 mcg/kg/minHave on Hand

Nipride 50mg/250cc

Wt: 136 lbsRate cc/hr ?

1. 136 · 2.2 = 61.8 kg ( 62kg.)2.5 mcg. X 62 kg. = 155

mcg/min.

2. Convert to like units155 mcg/min = ? mg/min

= 0.155 mg/min

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Nipride

3. Calculate flow rate cc/min

0.155mg. : x cc :: 50mg : 250cc50 x = 250 x ( 0.155)50 x = 38.75x = 0.775 cc/min.

4. Calculate flow rate cc/hr. 0.775/min x 60min/hr. = 46.5 cc/hr. or 47 cc/hr.

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OrderLidocaine 2 mcg/kg/min

Have on Hand: Lidocaine 1 g/250 cc

Pt Wt: 62kgRate? cc/hr.

1. 2 mcg x 62 kg = 124 mcg/min

2. 1g Lidocaine = 1000mg

124 mcg. = 0.124 mg.

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Lidocaine Problem cont..

3. 1000mg : 250cc :: 0.124 mg : x cc1000 x = 250 ( 0.124)1000 x = 31

x =0. 031

4. 0.031 cc/ minute

Not finished , need cc/hr. SO,

0.031 x 60 = 1.86 cc/hr.

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Unacceptable Abbreviations

• OFFICIAL DO NOT USE LIST, ( and soon to be not used)

IN DOSAGE CALC FOLDER

• They are changing as we speak