Dehydration

1
Dehydration

• These slides address the problems of dehydration
  and math exercises related to dehydration.

2
Dehydration

• Dehydration can be defined as when the loss of
  water and salts is more than is replenished.
• The average person loses about 2.5 liters of
  water every day. So to stay properly hydrated you
  must replenish this water in order to keep from
  being dehydrated.

3
Dangers of Dehydration

• Dehydration can lead to any of the following
  problems
• Cramps
• Headaches
• Diarrhea
• Fever
• Vomiting
• Hallucinations
• Death
• In fact, dehydration is the leading cause in
  deaths of infants.

4
Water in the Body

• Water makes up approximately 60 of the male
  body mass, and 50 of the female body mass.
• Water makes up 75 of muscle mass, but only 25
  of fat mass. So the lower a persons body fat
  percent is, the higher their water percent will
  be.

5
Body Mass

• Water makes up 60 of a mans body mass. How much
  water is in a man who weighs 215 lbs?
• Assume that the previous man has 24 lbs of fat
  and the water in his body due to fat and muscle
  is 100 lbs. Using the fact that fat is 25 weight
  by mass and muscle is 75 weight by mass, how
  much muscle mass does the man have?

6
Dangerous Dehydration

• There are three types of dehydration
• Mild Less than 5 weight loss
• Moderate 5-10 weight loss
• Severe 10-15 weight loss
• Severe dehydration requires immediate medical
  attention and can lead to death.

7
Dehydration Problems

• Now we are going to do some math problems
  related to dehydration.

8
Diagnosing Dehydration

• Determine whether each of the following people
  are severely, moderately, or mildly dehydrated.
• (a) A woman who normally weighs 120 lbs and has
  lost 5 lbs
• (b) A woman who normally weighs 140 lbs and has
  lost 20 lbs
• (c) A man who normally weighs 190 lbs and has
  lost 15 lbs

9
Loss of Water

• If a woman weighs 125 lbs, how much water would
  she have to lose to become
• (a) mildly dehydrated (0-5)
• (b) moderately dehydrated (5-10)
• (c) severely dehydrated (10-15)
• How many gallons would that be?
• (1 gal 8.3370 lbs of water)

10
How about you?

• Kids between 10-12 need about half their body
  weight in ounces of water to remain adequately
  hydrated. Use a scale to determine how much you
  weigh, and how many ounces of water you would
  need.

11
Glasses of Water

• Every glass contains 8 fluid ounces. Calculate
  how many glasses of water you need each day based
  on the number of ounces you previously calculated.

12
Measuring Water

• Now measure out the water you calculated in the
  last step. Use different size measuring cups to
  add up to the amount of water you need each day.
  Does the amount you calculated seem like too
  much? Too little?