Clinical Reference Systems: Pediatric Advisor 10.0
Dehydration
Description
Dehydration is a condition in which the body doesn't have
enough water to function properly. Your child's body can
lose a lot of water if he or she has diarrhea, is vomiting,
or has been exercising for a long time without having
anything to drink. If water is not adequately replaced in
the body, complications can include decreased activity,
weakness, electrolyte imbalances, and, in cases of extreme
dehydration, death.
Infants and young children are at greatest risk for
dehydration. Sick children may become more dehydrated if
they do not want to drink because their stomach hurts or if
they are very weak.
With mild dehydration, children may:
- have sticky or dry mouths
- urinate less
- be more thirsty than usual.
With more severe dehydration, children often:
- have decreased alertness
- have sunken eyes
- urinate much less if at all
- lose weight.
Dehydration can be a medical emergency. Call your doctor
IMMEDIATELY because your child may need intravenous (IV)
fluids at the hospital if:
- Your child's activity level is greatly decreased.
- Your child is difficult to arouse.
- Your child appears limp and weak.
- Your child doesn't seem to recognize you.
Home Care
Encourage your child to drink. Since dehydration, no matter
what the cause, involves high loss of body water, the goal
is to replace it. Often the specific approach to treatment
will vary with the type of illness causing the dehydration.
For instance, the type and rate of fluid replacement in a
child with vomiting and diarrhea is different from fluid
replacement in a child dehydrated due to sports activity.
- Mild dehydration due to illness in infants under 1 year
old
Encourage, but do not force, your child to drink. If
you are not breast-feeding your child, give him or her
special clear liquids with electrolytes, such as
Pedialyte or Kao Lectrolyte, instead of formula for the
first 12 to 24 hours. These oral electrolyte solutions
are available without prescription at supermarkets and
drugstores. If you are breast-feeding and your baby is
urinating less frequently than normal, offer an
electrolyte solution between breast-feedings for the
first 6 to 24 hours.
If your child is vomiting, give small, frequent amounts
of breast milk or the electrolyte fluids rather than
less frequent large amounts. For example, if your child
normally takes 8 ounces every 4 hours, give instead
1 ounce every 1/2 hour. The child will be better able
to keep the liquid down and still get the same amount of
fluid.
If your child is not vomiting or having diarrhea, you
may give age-appropriate foods along with the breast
milk or electrolyte liquids.
For most illnesses, start giving a bottle-fed baby full-
strength formula again after 12 to 24 hours of the clear
liquids.
- Mild dehydration due to illness in children over 1 year
old
Encourage but do not force your child to drink. Kool-
Aid and half-strength lemon-lime soft drinks (half
water, half soft drink) may be given to start. Clear
soups, half-strength sports drinks, Popsicles, and half-
strength Jell-O water are also good choices. Avoid all
fruit juices.
If your child is vomiting, he or she should drink small,
frequent amounts of liquid rather than large infrequent
amounts.
If your child is not vomiting or having diarrhea, water
alone works well for rehydration in the first few hours,
although your child may eat regular food if he or she is
hungry.
After a few hours of clear liquids, start giving your
child liquids and foods with energy sources (sugar) and
nutritional value.
- Mild dehydration due to exertion in older children
Follow the instructions given above for mild dehydration
in children over 1 year old. Your child will probably
be quite thirsty and should be allowed to drink as much
as she or he wants. Pure water is acceptable for the
first hour or two, but after this, drinks containing
sugar or regular food is necessary. Also, your child
should rest from the activity in a cool, shaded
environment until he or she is rehydrated.
Mistakes to Avoid
- Clear liquids should not be used alone for longer than
12 to 24 hours because they lack adequate calories.
Your child needs normal, healthy foods to regain
strength.
- Avoid highly concentrated solutions, such as boiled
milk, and drinks with a lot of sugar such as colas and
apple juice (unless diluted with water).
Prevention
- Make sure your child drinks often during strenuous
activities, such as prolonged sports, or during exposure
to hot, dry, or windy environments.
- Remember that children frequently become mildly
dehydrated during travel or when fluids aren't readily
available. Encourage drinking during travel and carry
water with you whenever possible.
- At the first sign of vomiting or diarrhea, encourage
fluids as advised in the home care instructions for these
illnesses.
Call Your Child's Physician IMMEDIATELY If:
- Your child does not make tears while crying.
- Your child has a dry or sticky mouth.
- Your child has no urine in over 8 hours.
- Your child is dizzy or unsteady while standing or
walking.
- Your child appears less alert than usual.
- Your child refuses to drink fluids despite your
encouragement.
- Your child starts to act very sick.
- Your child's vomiting is worsening or lasting longer than
6 to 8 hours.
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