The human body temperature is maintained within a narrow range despite the surrounding environmental changes The core body temperature is the internal temperature of the body that is crucial for the body’s essential functions It is important to measure the core body temperature accurately to diagnose and treat various medical conditions Here are different methods to measure the core body temperature.
Rectal Temperature
Rectal temperature is considered the gold standard for measuring the core body temperature as it accurately reflects the body’s internal temperature The rectum is closer to the body’s core, and the temperature of the rectum is very close to that of the core To measure the rectal temperature, first, the thermometer is lubricated with a water-soluble jelly The patient is then positioned on their left side, and the thermometer is gently inserted into the rectum, about an inch or two, until it reads the temperature, which usually takes a few seconds Rectal temperature is a preferred method of temperature measurement in infants and young children However, this method may not be suitable for everyone, and it can be uncomfortable and embarrassing.
Oral Temperature
Oral temperature is the most commonly used method of temperature measurement To measure the oral temperature, the thermometer is placed under the tongue and kept there for a few seconds until the temperature is read The thermometer should not be placed in the mouth immediately after eating, drinking, or smoking The patient should also not talk or move during the temperature measurement This method is relatively easy, quick, and non-invasive However, oral temperature may not accurately reflect the core body temperature if the patient has recently eaten, drank hot or cold beverages, breathed through their mouth, or has a nasal blockage.
Axillary Temperature
Axillary temperature is measured by placing the thermometer in the armpit To measure the axillary temperature, the thermometer tip is placed in the center of the armpit and held tightly against the skin for a few seconds until the temperature is read This method is simple and causes no discomfort or pain, making it suitable for infants, young children, and the elderly However, it is less accurate than rectal or oral temperature measurements, and it may not reflect the core body temperature accurately.
Ear Temperature
Ear temperature measurement involves the use of a special thermometer to measure the temperature in the ear canal The ear temperature is taken by inserting the thermometer probe into the ear canal gently how can the core body temperature be measured. The thermometer measures the temperature of the eardrum, which accurately reflects the core body temperature Ear temperature measurement is quick, non-invasive, and relatively accurate However, it may not give accurate measurements if the ear canal is blocked by wax, or if the ear thermometer is used incorrectly.
Temporal Artery Temperature
Temporal artery temperature measurement involves the use of an infrared thermometer to measure the temperature of the temporal artery, located on the forehead The thermometer is placed on the forehead, and a scan is done across the forehead to the temple This method is quick, non-invasive, and causes no discomfort It is suitable for infants, young children, and the elderly However, the accuracy of this method may be influenced by sweating, movement, and exposure to room temperature.
Ingestible Temperature Sensor
The ingestible temperature sensor is a small device that is swallowed and placed in the gastrointestinal tract Once swallowed, the sensor wirelessly transmits the temperature information to an external device that measures the core body temperature This method is painless, non-invasive, and offers continuous temperature monitoring It is ideal for athletes and astronauts who need to monitor their temperature continuously However, this method is expensive, and the device may not be suitable for individuals with gastrointestinal problems.
Conclusion
The core body temperature is an important indicator of the body’s internal temperature, which is crucial for the body’s essential functions Different methods of measuring the core body temperature have been developed, each with its own advantages and disadvantages Rectal temperature remains the gold standard for measuring the core body temperature, but other methods, such as oral, axillary, ear, temporal artery, and ingestible temperature sensors, are also available The method of temperature measurement used depends on the patient’s age, health status, and the clinical situation A healthcare professional should determine which method of temperature measurement to use to obtain accurate results With accurate measurement, a proper diagnosis and treatment plan can be implemented promptly.