Medical Math Chapter 13
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Questions and Answers

Name the different math applications in health care.

Calculating medication dosages, taking height and weight readings, measuring the amount of intake, billing and bookkeeping tasks, performing lab tests, mixing cleaning solutions.

What is the definition of a whole number?

Traditionally used to count (1,2,3). They don't contain fractions or decimals.

Give 3 examples of adding 2 whole numbers.

2 + 2 = 4, 3 + 5 = 8, 10 + 2 = 12.

Give 3 examples of subtracting 2 whole numbers.

<p>2 - 2 = 0, 5 - 3 = 2, 10 - 2 = 8.</p> Signup and view all the answers

Give 3 examples of multiplying 2 whole numbers.

<p>2 * 2 = 4, 5 * 3 = 15, 10 * 5 = 50.</p> Signup and view all the answers

Give 3 examples of dividing 2 whole numbers.

<p>10 / 2 = 5, 6 / 2 = 3, 12 / 3 = 4.</p> Signup and view all the answers

Why do we use fractions in health care?

<p>Measuring solutions for laboratory tests, calculating height and weight, measuring head circumference on an infant, mixing solutions such as disinfectants for infection control, preparing dental materials and trimming dental models, mixing infant formulas or tube feedings.</p> Signup and view all the answers

What is an improper fraction?

<p>They have numerators that are larger than the denominator.</p> Signup and view all the answers

What percentage of people in the ED have had heart attacks in the one month period?

<p>11.8%.</p> Signup and view all the answers

What percentage seen in the ED are work related?

<p>14.1%.</p> Signup and view all the answers

What percentage are home injuries?

<p>29%.</p> Signup and view all the answers

What is the total percentage of work-related injuries, home-related injuries, and heart attack patients seen in the ED for the month?

<p>54.9%.</p> Signup and view all the answers

Define ratios and explain the ratio in gargling for a sore throat.

<p>Show relationships between numbers. Gargle with a 1:2 ratio of hydrogen and water means using 1 cup of hydrogen and 2 cups of water.</p> Signup and view all the answers

Why do we use proportions in health care?

<p>Calculating height to feet and inches, calculating weight to pounds and ounces, determining the proper dosage of a medication, calculating a flow rate for IV solutions, determining measurements to mix solutions, interpreting laboratory test results.</p> Signup and view all the answers

Match the following Roman numerals with their numbers:

<p>I = 1 V = 5 X = 10 L = 50 C = 100 D = 500 M = 1000 VI = 6 XXX = 30 XL = 60 XIX = 21 III = 3</p> Signup and view all the answers

What angle for inserting a needle do the following abbreviations stand for?

<p>IM: intramuscular, 90 degrees; SUBCU: subcutaneous, 45 degrees; IV: intravenous, 25 degrees; ID: intradermal, 10-15 degrees.</p> Signup and view all the answers

Write out the following measurement conversions:

<p>12 in = 1 ft 3 ft = 1 yd 1760 yds = 1 mi 60 gtts = 1 T 3 T = 1 T 2 T = 1 oz 8 oz = 1 C 2 C = 1 pt 2 pt = 1 qt 4 qt = 1 gal 16 oz = 1 lb</p> Signup and view all the answers

Distance in metric is known as the ___________ and abbreviated __.

<p>Meter, m</p> Signup and view all the answers

Capacity or volume is known as the _________ and abbreviated ____.

<p>Liter, L</p> Signup and view all the answers

Mass/weight is known as the ______ and abbreviated ___.

<p>Gram, g</p> Signup and view all the answers

What does table 13-2 on page 331 tell us?

<p>Step by step on how to add, subtract, multiply, and divide fractions.</p> Signup and view all the answers

What is the result of 1/3 + 3/4?

<p>13/12.</p> Signup and view all the answers

What is the result of 1/6 + 1/4 + 1/3?

<p>3/4.</p> Signup and view all the answers

What is the result of 1/2 * 3/4?

<p>3/8.</p> Signup and view all the answers

What is the result of 2/3 * 2/5?

<p>4/15.</p> Signup and view all the answers

What does dividing fractions require that we do to the fraction?

<p>Divide by the reciprocal.</p> Signup and view all the answers

What are the 2 examples given in the book for needing to divide fractions in medicine?

<p>Dental assistant, pharmacist.</p> Signup and view all the answers

Give 3 examples of why we use percentages in health care.

<p>Preparing solutions for laboratory tests, calculating the amount of tax that must be subtracted from the salary check, determining dietary requirements or calculating special diets.</p> Signup and view all the answers

Study Notes

Math Applications in Health Care

  • Used for calculating medication dosages and taking height and weight readings.
  • Essential for measuring intake amounts and conducting billing/bookkeeping tasks.
  • Important in performing laboratory tests and mixing cleaning solutions.

Whole Numbers

  • Whole numbers are traditionally used for counting and do not involve fractions or decimals.

Operations with Whole Numbers

  • Addition Examples: 2+2=4, 3+5=8, 10+2=12
  • Subtraction Examples: 2-2=0, 5-3=2, 10-2=8
  • Multiplication Examples: 22=4, 53=15, 10*5=50
  • Division Examples: 10/2=5, 6/2=3, 12/3=4

Use of Fractions in Health Care

  • Vital for measuring solutions in laboratory tests and calculating height and weight.
  • Utilized for measuring head circumference in infants and mixing disinfectants.
  • Important in preparing dental materials and infant formulas.

Improper Fractions

  • Defined as fractions with numerators larger than the denominators.

Emergency Department Statistics

  • 11.8% of patients had heart attacks in the past month.
  • 14.1% of visits were work-related injuries.
  • Home-related injuries account for 29% of patients.
  • Total for work-related injuries, home injuries, and heart attack patients reached 54.9%.

Ratios

  • Ratios show relationships between numbers, such as a 1:2 ratio of hydrogen to water.
  • For a sore throat gargle, it means using 1 cup of hydrogen and 2 cups of water.

Use of Proportions in Health Care

  • Used for calculating height and weight conversions, proper medication dosages, and IV flow rates.
  • Important for mixing solutions and interpreting laboratory test results.

Roman Numerals

  • I: 1, V: 5, X: 10, L: 50, C: 100, D: 500, M: 1000
  • VI: 6, XXX: 30, XL: 60, XIX: 21, III: 3

Needle Insertion Angles

  • Intramuscular (IM): 90 degrees
  • Subcutaneous (SUBCU): 45 degrees
  • Intravenous (IV): 25 degrees
  • Intradermal (ID): 10-15 degrees

Conversion Tables

Distance/Length

  • 12 in = 1 ft, 3 ft = 1 yd, 1760 yds = 1 mi

Capacity/Volume

  • 60 gtts = 1 T, 3 T = 1 T, 2 T = 1 oz, 8 oz = 1 C, 2 C = 1 pt, 2 pt = 1 qt, 4 qt = 1 gal

Mass/Weight

  • 16 oz = 1 lb

Metric Units

  • Distance is measured in meters (m), volume in liters (L), and mass/weight in grams (g).

Operations with Fractions

  • Basic operations include adding, subtracting, multiplying, and dividing fractions.
  • Dividing fractions involves using the reciprocal.

Examples of Fraction Operations

  • 1/3 + 3/4 = 13/12
  • 1/6 + 1/4 + 1/3 = 3/4
  • 1/2 * 3/4 = 3/8
  • 2/3 * 2/5 = 4/15

Dividing Fractions in Medicine

  • Relevant for roles such as dental assistants and pharmacists.

Use of Percentages in Health Care

  • Important for preparing laboratory solutions, calculating tax deductions, and determining dietary requirements.

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Test your knowledge with flashcards from Medical Math Chapter 13. This quiz covers various mathematical applications in healthcare, including dosage calculations, measurements, and billing tasks. Perfect for students and professionals in medical fields.

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