Normal Body Temperature: Ranges and Methods of Measurement | Lecture notes Human Biology

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All objects, solid, liquid or gas, emit energy by radiation. The

intensity of this energy depends on the temperature of the

object. The non-contact infrared thermometer is able to

measure the temperature of a person or object by the energy

the person/object emits. This measurement can be taken

because of an external temperature probe on the device that

permanently analyzes and registers the ambient temperature.

As soon as the operator holds the thermometer near the body

and activates the radiation sensor, the measurement is taken

instantly by detection of the infrared heat generated by the

arterial blood flow. Body heat can therefore be measured

without any interference form the heat of surrounding

environment.

What is Normal Body Temperature Range?1

The overall health of an individual is determined by examining several vital signs such

as body temperature, pulse rate, respiration rate, heartbeat and blood pressure. For all

these measurements, there are recommended ranges that help in demarcating a

healthy person from an ill health individual. Normal body temperature varies by person,

age, gender, activity, and time of day. The average normal body temperature of a

healthy, resting adult human being has been stated to be at 98.6 degrees Fahrenheit

or 37.0 degrees Celsius. A temperature over 100.4 degrees Fahrenheit usually means

you have an infection or illness.

Our body controls the temperature within a narrow range by means of a process called

thermoregulation. This is crucial as temperature affects the enzyme activities and

chemical reactions of the body. The normal range of human body temperature varies

due to an individuals metabolism rate, the higher (faster) it is the higher the normal

body temperature or the slower the metabolic rate the lower the normal body

temperature.

By normal body temperature range, we mean the range of temperature that is optimal

for carrying out the bodily functions and metabolic activities. Low temperature

(hypothermia) or high temperature (hyperthermia) without any apparent reason can be

a sign of underlying disease. Other factors that might affect the body temperature of an

individual may be the time of day or the part of the body in which the temperature is

measured at. The body temperature is lower in the morning, due to the rest the body

received, and higher at night after a day of muscular activity and after food intake. The

1 Significantly drawn from http://www.buzzle.com/articles/normal-body-temperature-rang e.html

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Operating Principle: VeraTemp+ Professional Non Contact Thermometer All objects, solid, liquid or gas, emit energy by radiation. The intensity of this energy depends on the temperature of the object. The non-contact infrared thermometer is able to measure the temperature of a person or object by the energy the person/object emits. This measurement can be taken because of an external temperature probe on the device that permanently analyzes and registers the ambient temperature. As soon as the operator holds the thermometer near the body and activates the radiation sensor, the measurement is taken instantly by detection of the infrared heat generated by the arterial blood flow. Body heat can therefore be measured without any interference form the heat of surrounding environment. What is Normal Body Temperature Range?^1 The overall health of an individual is determined by examining several vital signs such as body temperature, pulse rate, respiration rate, heartbeat and blood pressure. For all these measurements, there are recommended ranges that help in demarcating a healthy person from an ill health individual. Normal body temperature varies by person, age, gender, activity, and time of day. The average normal body temperature of a healthy, resting adult human being has been stated to be at 98.6 degrees Fahrenheit or 37.0 degrees Celsius. A temperature over 100.4 degrees Fahrenheit usually means you have an infection or illness. Our body controls the temperature within a narrow range by means of a process called thermoregulation. This is crucial as temperature affects the enzyme activities and chemical reactions of the body. The normal range of human body temperature varies due to an individuals metabolism rate, the higher (faster) it is the higher the normal body temperature or the slower the metabolic rate the lower the normal body temperature. By normal body temperature range, we mean the range of temperature that is optimal for carrying out the bodily functions and metabolic activities. Low temperature (hypothermia) or high temperature (hyperthermia) without any apparent reason can be a sign of underlying disease. Other factors that might affect the body temperature of an individual may be the time of day or the part of the body in which the temperature is measured at. The body temperature is lower in the morning, due to the rest the body received, and higher at night after a day of muscular activity and after food intake. The (^1) Significantly drawn from http://www.buzzle.com/articles/normal-body-temperature-range.html

lowest body temperature is measured around 3 a.m. in the morning, while the highest is recorded at around 6 p.m. in the afternoon. Also, the higher the activity level at that time, the more is the temperature value. Normal Body Temperature ranges for babies, children and adults Normal Body Temperature Range for Babies For babies, the normal body temperature range is between 96.8°F to 98.6°F (36°C to 37°C). Temperature measurement for a baby below 96.8°F is considered low and required warming up, whereas temperature within a range of 98.6°F to 99.5°F is low-grade, which can be caused due to over dressing and over wrapping. The body temperature of a baby falling within a range of about 100.4°F to 101.3°F is considered to have fever. Normal Body Temperature Range in Children The normal body temperature range for children is 96.8-98.24°F, which is nearly the same as adults. In case of children above 6 years old, the daily fluctuation of temperature is about 2 degrees Fahrenheit. For a child, rectal temperature measurement of about 100.4°F or higher is considered as a sign of fever. Normal Body Temperature Range for Adults Also referred to as normothermia, the normal human body temperature of a resting adult body is 98.6 degrees, when measured in a Fahrenheit scale and 37.0 degrees when measured in a Celsius scale. These are the normal body temperatures for core body measurements. However, the accepted normal body temperature range measured orally (beneath the tongue) is 98.2±1.3°F and 36.8±0.7°C. An adult has fever if his or her oral temperature measurement is 99.5°F or higher. In the concluding note, the normal body temperature range for an adult woman is slightly higher than an adult man. In comparison to this, the normal body temperature is higher in children, while it is lower in elderly individuals. Normal Body Temperature and Age Normal Temp° Ranges Age Celsius Fahrenheit 0 to 2 years 36.4°C - 38.0°C 97.5°F - 100.4°F 3 to 10 years 36.1°C - 37.8°C 97.0°F – 100.0°F 11 to 65 years 35.9°C - 37.6°C 96.6°F - 99.7°F 65+ years 35.8°C – 37.5°C 96.4°F – 99.5°F

system. So long as the patient’s blood flow is permanent and regular, the method allows precise measurement of the temperature. Temporal thermometers can obtain temperature data by rubbing probe over or being in contact with skin or they can be totally non-contact. VeraTemp+ Professional Non Contact Thermometer is a totally non-contact temporal thermometer. The efficiency, hygienic nature, speed and comfort of taking a temperature in this manner make it ideal compared with the other temperature measurement methods. The VeraTemp+ is designed to produce an instant forehead temperature without contact by reading the radiated temperature of the temporal artery. Normal Temperatures According to Measurement Method Measurement Method Normal Temp° C Normal Temp° F Rectal 36.6°C - 38.0°C 97.9°F - 100.4°F Oral 35.5°C - 37.5°C 95.9°F - 99.5°F Axillary 34.7°C - 37.3°C 94.5°F - 99.1°F Auricular 35.8°C - 38.0°C 96.4°F - 100.4°F Temporal VeraTemp+ 35.8°C - 37.8°C 96.4°F - 100.1°F The temperature of the human body varies thought the day. It can also be influenced by numerous external factors including age, sex, type and thickness of skin.

Normal Body Temperature: Ranges and Methods of Measurement, Lecture notes of Human Biology

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