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Basic Theory of Body Temperature Measurement—The Characteristic of Body Temperature

2017.08.14 / Monday

Basic Theory of Body Temperature Measurement—The Characteristic of Body Temperature

In clinical practice, temperature means the average temperature of the deep part of the body. Measuring different parts of human body can get the different temperature readings.


The affecting factors of body physiological temperature changes include gender, age, day alternates with night, and the external environment changes. In addition of these, the pathological changes are the main causes, such as bacteria, virus, mycoplasma, parasites and other infectious diseases. Also, the trauma and the autoimmune diseases can cause the changes in human body temperature.


Body physiological temperature changes in volatility at most 1 within 24h. For example, the normal axillary temperature range from 36.4 to 36.4. The average reading is 36.8.

One thing should be noticed is that the change of body temperature does not necessarily reflect from the body surface, the skin temperature may be reduced when the patients in hyperpyrexia, or chills.


Body peripheral tissue temperature includes skin tissue temp, subcutaneous layers temp and muscle temp. All of these can be called shell temperature. It’s not stable, and the differences between these temperatures reading are smaller.


The outermost layers temperature of human body is skin temperature; it also called the surface temperature. The different readings of surface temperature are bigger than shell. If the environment temperature is 23, the surface temperature of foot is 27, head temp is 30,trunk temp is 32, forehead temp is 33-34.

The body deep temperature is higher than the shell temperature, and it is more stable. In the different environment, the distribution of them will change relatively. The disposable temperature probe can help health works to know the patients temperature in time.