Certified Nursing Assistant (CNA) Prometric Practice Exam

Which type of temperature measurement is considered the most common?

1. Rectal

2. Axillary

3. Oral

4. Tympanic

The correct answer is: Oral

The most common type of temperature measurement is oral. This method is widely used due to its balance of accuracy and ease of use. Measuring temperature orally typically provides a good reflection of the body’s core temperature and is non-invasive, making it suitable for both adults and children who are able to hold the thermometer under their tongue properly. Oral temperature readings are also generally quick and can be performed using digital thermometers, which are easy to sanitize and safe when used correctly. This method is particularly preferred in clinical settings and home care because it can be done comfortably and effectively. Other methods like rectal, axillary, and tympanic are also used, but they may have specific contexts or populations where they are most appropriate. Rectal measurements, while accurate, are more invasive and usually reserved for specific situations such as in infants or when a more precise measurement is necessary. Axillary readings are often less reliable and can be influenced by environmental factors, while tympanic measurements, though quick, can require proper technique to ensure an accurate reading.