Oral and rectal thermometers are different and the temp varies a bit, for kids check with your care provider first. As to food, well nutrition first, but avoid Food Fatigue where it is the same thing over and over again to where even healthy people will not eat it, even if it is all that is available. As to recharging, I for one am not sure if the batteries for digital thermometers can be changed out or recharged, It may be something to take a look at.
What is body temperature?
Body temperature is a measure of the body's ability to generate and get rid of heat. The body is very good at keeping its temperature within a narrow, safe range in spite of large variations in temperatures outside the body.
When you are too hot, the blood vessels in your skin expand (dilate) to carry the excess heat to your skin's surface. You may begin to sweat, and as the sweat evaporates, it helps cool your body. When you are too cold, your blood vessels narrow (contract) so that blood flow to your skin is reduced to conserve body heat. You may start shivering, which is an involuntary, rapid contraction of the muscles. This extra muscle activity helps generate more heat. Under normal conditions, this keeps your body temperature within a narrow, safe range.
Where is body temperature measured?
Your body temperature can be measured in many locations on your body. The mouth, ear, armpit, and rectum are the most commonly used places. Temperature can also be measured on your forehead.
What are Fahrenheit and Celsius?
Thermometers camera are calibrated in either degrees Fahrenheit (°F) or degrees Celsius (°C), depending on the custom of the region. Temperatures in the United States are often measured in degrees Fahrenheit, but the standard in most other countries is degrees Celsius.
What is normal body temperature?
Most people think of a "normal" body temperature as an oral temperature of 98.6°F (37°C). This is an average of normal body temperatures. Your temperature may actually be 1°F (0.6°C) or more above or below 98.6°F (37°C). Also, your normal body temperature changes by as much as 1°F (0.6°C) throughout the day, depending on how active you are and the time of day. Body temperature is very sensitive to hormone levels and may be higher or lower when a woman is ovulating or having her menstrual period.
A rectal or ear (tympanic membrane) temperature reading is slightly higher than an oral temperature reading. A temperature taken in the armpit is slightly lower than an oral temperature reading. The most accurate way to measure body temperature is to take a rectal temperature.
What is a fever?
In most adults, an oral temperature above 100°F (37.8°C) or a rectal or ear temperature above 101°F (38.3°C) is considered a fever. A child has a fever when his or her rectal temperature is 100.4°F (38°C) or higher.http://www.babycenter.com/0_how-to-take-your-babys-temperature_11508.bc http://www.babycenter.com/0_how-to-take-your-babys-temperature_11508.bc
How to take your baby's temperature
Reviewed by the BabyCenter Medical Advisory Board
What's the best way to take my baby's temperature?
Under the arm
Are there any other methods I can use?
What's the best way to take my baby's temperature?
For starters, you'll need a good digital thermometer, which you can find in drugstores for less than $10. Digital thermometers are easy to use, easy to read, and fast — most give an accurate reading in ten seconds to two minutes.
If you still have an old-fashioned glass thermometer around the house, you'll want to dispose of it properly. (Check the yellow pages of your phone book to find your local household hazardous waste site.) These thermometers can shatter and leak dangerous mercury.
Some digital thermometers are specifically designed for use in the rectum, but most can be used rectally, orally, or under the arm. (If you take your baby's temperature using more than one method, you'll want to designate a thermometer for each.)
Digital ear thermometers, called tympanic thermometers, are usually more expensive and can only be used in the ear.
That leads to the question of where to put the thermometer to get the best reading: in the rectum, the ear, or the armpit. (Taking your child's temperature orally won't be an option until he's a little older.) Each method has advantages and disadvantages, so talk it over with your doctor to see which method she recommends for your baby.
Regardless of which method you use, don't take your baby's temperature right after he's had a bath, as it could affect his temperature. Wait at least 20 minutes after bath time for an accurate reading.
Your doctor may ask you to take a rectal reading until your baby reaches 3 months of age. That's because an accurate reading is vital when your baby's little, and the rectal method consistently gives the most accurate results. Most of the research that your baby's doctor relies on to decide how to respond to a fever is based on rectal temperatures.
Some babies don't mind having their temperature taken rectally, while others just seem miserable being subjected to this procedure. If your baby protests, you might want to take his underarm (axillary) temperature first and then take his rectal temperature if the first reading is over 99 degrees Fahrenheit.
Here's how to use a rectal thermometer:
Look for a rectal thermometer that has a flexible tip and a wide handle that doesn't let you insert it more than an inch. (If you were to accidentally insert the thermometer too far — if your baby gets very squirmy, for example — you could perforate your baby's rectum.)
To prepare the thermometer, clean the end with rubbing alcohol or a little soap and warm water. Rinse with cool water. Then coat the end with a little petroleum jelly for easier insertion or use a disposable sleeve made for that purpose.
Hold your baby on your lap, tummy down and bottom up, letting his legs dangle over the side of your thigh. Or place him on his back, either on the bed or on a changing table. Your baby may be more comfortable in the tummy-up position, since he's used to lying that way for diaper changes. Besides, you'll be better able to distract him if he can see your face.
Press the thermometer button to turn it on. With your other hand, spread your baby's buttocks apart. Gently insert the bulb about half an inch to an inch (1.3 to 2.5 centimeters) into his rectum, or until the tip of the thermometer disappears.
Keep a firm grip on his buttocks by cupping them with the palm and fingers of the hand that's holding the thermometer. Don't let go of the thermometer, or it may not stay in place if your baby starts wriggling.
When the thermometer beeps, remove it and read your baby's temperature. Be aware that inserting anything into your baby's rectum can stimulate his bowels, so don't be surprised if he poops when you take the thermometer out. Clean the thermometer with soapy water or rubbing alcohol, then rinse and dry before storing.
Hope this helps.