Medical MathMedical Math

Perform medical mathematical Perform medical mathematical conversions common to the conversions common to the medical/health professions.medical/health professions.

Cubic centimeters = ccCubic centimeters = ccMillimeters = mlMillimeters = ml

1 oz = 30 cc or ml1 oz = 30 cc or ml ml and cc are ml and cc are

interchangeable.interchangeable. To find out how many cc To find out how many cc

a pt. drank or voided, a pt. drank or voided, you would multiply 30 X you would multiply 30 X oz. oz.

Example: Ted drank 3 Example: Ted drank 3 oz. of milk, how many cc oz. of milk, how many cc did he drink?did he drink?

30 X 3 = 90 cc or ml30 X 3 = 90 cc or ml

Math ProblemsMath ProblemsAnswer each Answer each question on your own question on your own and then check and then check answer with next answer with next slide.slide.

Adam voided 2 oz Adam voided 2 oz how many ml did he how many ml did he void?void?

A nurse had a syringe A nurse had a syringe fill with 10 cc of blood fill with 10 cc of blood he used .5 ml for a he used .5 ml for a lab test. How much lab test. How much was left?was left?

If a pt. drinks ¼ of a If a pt. drinks ¼ of a 12 oz soda, how 12 oz soda, how many cc has she many cc has she drank?drank?

If a pt. drank 3 oz of If a pt. drank 3 oz of soda and 2 oz of milk, soda and 2 oz of milk, how many cc did she how many cc did she drink?drink?

Multiply 3 x 30 and 2 Multiply 3 x 30 and 2 x 30 then add x 30 then add together =together =

A male pt. is on A male pt. is on intake and output. If intake and output. If he voided 240 cc how he voided 240 cc how many oz. did he void.many oz. did he void.

Divide 240 by 30 =Divide 240 by 30 =

A lab tech measures A lab tech measures 30 ml of a urine 30 ml of a urine sample in a 4 oz. sample in a 4 oz. container. How many container. How many more ml is needed to more ml is needed to fill the container.fill the container.

Check your answers:Check your answers:

60 ml60 ml 9.5 ml9.5 ml 90 cc90 cc

150 cc150 cc 8 oz.8 oz. 90 ml90 ml

Teaspoons and Teaspoons and TablespoonsTablespoons

One teaspoon (tsp.)One teaspoon (tsp.) = 5 cc or 5 ml= 5 cc or 5 ml One tablespoon One tablespoon

(tbs.) = 15 cc or (tbs.) = 15 cc or 15 ml15 ml

If a Dr. ordered a pt. If a Dr. ordered a pt. to take 3 teaspoons to take 3 teaspoons of a medication how of a medication how many cc would the many cc would the pt. take? pt. take?

3 x 5 = 15 cc or ml3 x 5 = 15 cc or ml How many How many

tablespoons is that? tablespoons is that? (15cc/ 15 tbs = 1tbs)(15cc/ 15 tbs = 1tbs)

Check your math…Check your math…Answer each Answer each question then check question then check your answers on next your answers on next slide.slide.

If a pt. was to take If a pt. was to take three teaspoons of three teaspoons of Amoxil how many Amoxil how many cc/ml would they cc/ml would they take?take?

You went to the Dr. You went to the Dr. and he gave you a and he gave you a prescription for prescription for Phenergan 25 Phenergan 25 mg/5cc. The Dr. mg/5cc. The Dr. wants you to take wants you to take 25mg how many 25mg how many teaspoons would you teaspoons would you take?take?

The doctor ordered The doctor ordered the nurse to give an the nurse to give an infant 1½ teaspoon infant 1½ teaspoon of Tylenol. How many of Tylenol. How many cc would you give?cc would you give?

Your mother is treating you Your mother is treating you for a cold and wants to give for a cold and wants to give you Dimetapp. The you Dimetapp. The instructions say to give instructions say to give 22.5 cc and your mother 22.5 cc and your mother only has a tsp. How many only has a tsp. How many tsp. would she give?tsp. would she give?

On the previous On the previous question how many question how many tbs would she give?tbs would she give?

Answers…Answers…

Check your Check your answersanswers

15 cc15 cc

3 tsp x 5cc = 3 tsp x 5cc = 15 cc15 cc

1 tsp1 tsp

25 mg= 5cc25 mg= 5cc

5cc=1tsp5cc=1tsp7.5 cc7.5 cc

1 tsp = 5cc1 tsp = 5cc

½ tsp = 2.5cc½ tsp = 2.5cc

5cc + 2.5cc =7.5cc5cc + 2.5cc =7.5cc

4 ¼ tsp4 ¼ tsp

5cc=1 tsp5cc=1 tsp

22.5/5=4.25 or 4 ¼ 22.5/5=4.25 or 4 ¼ tsptsp

1 ½ tbs1 ½ tbs

1 tbs = 15 cc1 tbs = 15 cc

22.5/15= 1 ½ tbs22.5/15= 1 ½ tbs

Weight Check it out….Weight Check it out….

1 kg or (kilogram) x 1 kg or (kilogram) x 2.2 lb (pounds)=lbs2.2 lb (pounds)=lbs

If an infant weights If an infant weights 4.09 kg their weight 4.09 kg their weight in lb is: in lb is:

4.09kg x 2.2lb = 8.998 4.09kg x 2.2lb = 8.998 or 9lbsor 9lbs

1 lbs / 2.2 = 1 lbs / 2.2 = kilogramskilograms

If an infant weighs 10 If an infant weighs 10 lbs how much is that lbs how much is that in kg?in kg?

10 lbs/2.2=4.54kg10 lbs/2.2=4.54kg

Work the math…Work the math…

If an infant weighted 10 lbs at If an infant weighted 10 lbs at birth and the doctor needs to birth and the doctor needs to order medicine and needs to order medicine and needs to know how much the infant know how much the infant weights in Kg what would you tell weights in Kg what would you tell him?him?

The doctor orders you to give a The doctor orders you to give a toddler Amoxil 10 mgm/cc. The toddler Amoxil 10 mgm/cc. The toddler weights 20lbs. The dosage is toddler weights 20lbs. The dosage is 10mgm/kg.How much would you give 10mgm/kg.How much would you give the toddler? the toddler?

Answers….Answers….

10lb x .454 kg = 4.54 kg10lb x .454 kg = 4.54 kg 20lb x .454 kg = 9.08 Kg20lb x .454 kg = 9.08 Kg

10 mgm/kg/cc10 mgm/kg/cc

10 x 9.08 =90 cc10 x 9.08 =90 cc

Temperature ConversionsTemperature Conversions

To convert from Fahrenheit to Celsius you To convert from Fahrenheit to Celsius you must use the following formula:must use the following formula:

C=(F-32)5/9 C=(F-32)5/9 Example: Mary’s temperature is 101F and Example: Mary’s temperature is 101F and

your sister wants to know what that would your sister wants to know what that would be in C you would convert it:be in C you would convert it:

C=(101-32)5/9 C=(101-32)5/9 (101-32= 69 X5=345/9=38.3 C(101-32= 69 X5=345/9=38.3 C

Temperature ConversionTemperature Conversion

In order to convert Celsius (C) to In order to convert Celsius (C) to Fahrenheit (F) you must use the following Fahrenheit (F) you must use the following formula: F= (C)9/5 + 32formula: F= (C)9/5 + 32

For example: Your sister took your For example: Your sister took your nephew to the Doctor and the nurse told nephew to the Doctor and the nurse told her the babies temperature is 38C you her the babies temperature is 38C you tell her the babies temp is _ in Fahrenheittell her the babies temp is _ in Fahrenheit

F=(38C) x9=342/5=68.4 + 32 =100.4FF=(38C) x9=342/5=68.4 + 32 =100.4F

Converting inches to Converting inches to centimeterscentimeters

One inch= 2.5 centimeters.One inch= 2.5 centimeters. If a person has a wound and it is 10 inches in diameter If a person has a wound and it is 10 inches in diameter

how many inches is it in cm? how many inches is it in cm? 10 X 2.5 = 25 cm. The wound is 25 cm in diameter. 10 X 2.5 = 25 cm. The wound is 25 cm in diameter. If a person has a 15 cm cut on their arm could they If a person has a 15 cm cut on their arm could they

cover it with a 2 inch band aide?cover it with a 2 inch band aide? 15 / 2.5 = 6 inches no they would need three band 15 / 2.5 = 6 inches no they would need three band

aides.aides.