Texas Medical Assistant Certification Practice Test

What type of thermometer is commonly used for checking oral temperature?

1. Infrared

2. Digital

3. Mercury

4. Glass

The correct answer is: Digital

The most commonly used thermometer for checking oral temperature is a digital thermometer. Digital thermometers are favored because they provide quick and accurate readings, usually within a few seconds to a minute, making them especially convenient for both patients and healthcare providers. They are designed with an easy-to-read digital display, which eliminates the guesswork associated with reading traditional mercury or glass thermometers. Digital thermometers can be used for various types of temperature measurements, including oral, rectal, and axillary (underarm) temperatures. For oral use, a digital thermometer is placed under the tongue to ensure a proper reading, allowing for effective monitoring of body temperature, which is essential in clinical settings. Other types of thermometers, such as infrared thermometers, are often used for surface temperature readings and do not provide accurate oral temperature measurements. Mercury thermometers, while historically used, have become less common due to safety concerns regarding mercury exposure. Glass thermometers, similar to mercury types, are less utilized now predominantly because they take longer to provide a reading and pose a risk of breakage. Thus, the digital thermometer is the preferred choice for its reliability, speed, and safety.