Answer: a. She dipped the thermometer in a liquid before use. This is done to avoid infection because the liquid in which the thermometer is dipped is an antiseptic and helps in preventing infection.
Why do doctors put a thermometer under the tongue?
Thermometer is kept under tongue so that the reading which it gives is true , i.e. true reading of the inner body heat. The intense heat of our body is present under our tongue and so it is used under tongue so that we can measure our whole body temperature . So it is kept under tongue.
Why in terms of heat does the liquid level drop when the thermometer is placed in cold water?
When the thermometer is placed in cold water, the molecules slow down and their attractions bring them a little closer together bringing them down the tube. The red liquid is contained in a very thin tube so that a small difference in the volume of the liquid will be noticeable.
Why do we have to shake the thermometer before taking the temperature in a clinical thermometer?
Answer: The jerk to the thermometer will allow the mercury in or above the kink to flow into the bulb so that the mercury level is below normal temperature.
Should you shake thermometer?
There is a small bend in the mercury channel of a clinical thermometer that uses mercury. You must shake the thermometer to get the mercury from a previous reading from the thermometer back into the bulb (or at least to a low temperature number) so that a new reading can be taken.
How should you shake down a glass thermometer?
Shake the thermometer down using quick, sharp, downward wrist motions (figure 2-2). These quick wrist motions are sometimes called “cracking the whip.” Perform several of these motions.
How do I get my mercury free thermometer down?
You place the thermometer in a clean sock with the tip of the thermometer (the end that goes in your mouth) in the toe. Then you hold on to the other end and spin the sock around like an airplane propeller, obviously being careful not to hit anything with it. It works!
How do I check my temperature with a manual thermometer?
Shake the thermometer so that the mercury inside goes below 36°C (96.8°F). Carefully place the tip of the thermometer under your child's tongue. With your child's mouth closed, leave the thermometer in place for 3 to 4 minutes. Remove the thermometer and read the temperature.
How do you check a temperature without a thermometer?
Checking for a fever without a thermometer
What is the most accurate thermometer for home use?
First Look
What is a normal forehead temperature?
001) The most accurate one was chosen, and the normal range of forehead temperature in 1000 subjects detected by this method was 31.0 degrees C to 35.6 degrees C. Conclusions: Our study shows that commercially available, handheld infrared thermometers require individual validation.
Is it dangerous to take temperature on forehead?
Answer. You may have seen the social media posts warning about possible dangers of non-contact infrared thermometers. These devices, which are held up to a person's forehead to take their temperature, are being widely used in schools and child care centers. The good news is that the claims about their danger are false.
Is it safe to take temperature on forehead?
Where to Take the Temperature. Rectal temps are the most accurate. Forehead temps are the next most accurate. Oral and ear temps are also accurate if done properly.
Do you add a degree when using a forehead thermometer?
An ear (tympanic) temperature is 0.5°F (0.3°C) to 1°F (0.6°C) higher than an oral temperature. An armpit (axillary) temperature is usually 0.5°F (0.3°C) to 1°F (0.6°C) lower than an oral temperature. A forehead (temporal) scanner is usually 0.5°F (0.3°C) to 1°F (0.6°C) lower than an oral temperature.
Do you add a degree when taking temp by mouth?
Oral and axillary temperature readings are about 1⁄2° to 1°F (. 3°C to . 6°C) below rectal. Add these numbers to oral and axillary temperature readings for the most accurate reading.
Why is temperature taken on forehead?
In the age of COVID, our forehead will become the target of fever spot checks. Thermal cameras and non-contact infrared thermometers will get deployed in an effort to prevent people with a fever from entering into an area where they may infect others.
Why do thermometers give different readings?
Air in the mouth will cause temperature differences in the mouth tissue, making readings inaccurate. Wait at least 20 seconds even if the thermometer indicates it is already ready. You may also measure twice.
How accurate are non-contact thermometers?
The sensitivity and specificity for the non-contact thermometer is 97%. The negative predictive value is 99%, which is especially important to rule out fever and avoid unnecessary laboratory work-up.
Can two different thermometers give different readings?
Temperatures can be taken in several different places on the body with various thermometers; whichever type of thermometer you use, be sure to read the directions carefully. Almost all thermometers require correct positioning to get the most accurate reading.
