Name: body temperature changes and why they happen
Uploaded: 2024-06-20T13:02:51.000Z
Duration: 1 min 28 s
Channel: JoVE

Body temperature is affected by age, exercise, gender, circadian rhythm, stress, environment, and temperature changes.
Age alters body temperature, especially in newborns, as their thermoregulatory system is immature.
Similarly, older adults are more sensitive to temperature extremes due to reduced subcutaneous tissue density, sweat gland activity, and metabolism.
During exercise, muscles demand more blood supply, which increases metabolism and causes a change in body temperature.
Gender influences body temperature. Women experience more temperature fluctuations than men, particularly during menstruation and menopause, due to hormone changes.
The circadian rhythm, a physiological process that occurs every 24 hours, also affects the body temperature. It is lower in the morning and peaks in the afternoon.
Physical and mental stresses raise body temperature via hormonal and neurological stimuli that enhance metabolism.
Ambient temperature also affects body temperature. A warm environment elevates, while a cold environment reduces body temperature.
The internal body states, such as excessive heat production or heat loss, can also directly affect body temperature.

factors affecting body temperature

Factors Affecting Body Temperature

As a nurse, it is vital to understand the factors affecting body temperature to monitor variations and effectively evaluate deviations from regular.
Factors may&#160; include:
<ul>
	<li>&#8226; Age: Age is a significant factor in body temperature regulation. It&#39;s important to remember that different age groups, from newborns to older adults, have unique challenges. Newborns, for instance, have an immature mechanism that needs to respond more quickly and adequately to environmental changes, leading to significant temperature fluctuations. Similarly, older adults may struggle with temperature regulation due to various factors. Understanding these unique challenges can help us provide better care.</li>
	<li>&#8226;&#160;Exercise: Physical activity increases muscle activity, necessitating an enhanced blood supply and the breakdown of glucose and fat. This increase in metabolism elevates heat generation and body temperature. As the body breaks down glucose and fat for energy, heat is produced as a byproduct, increasing body temperature.</li>
	<li>&#8226;&#160;Hormonal Level: Women experience more body temperature fluctuations than men due to hormonal changes. For instance, progesterone levels increase during ovulation, raising body temperature. Progesterone stimulates the hypothalamus, the part of the brain that regulates body temperature, to improve the set point. During menopause, fluctuations occur as vasomotor controls for vasodilation and vasoconstriction become unstable.</li>
	<li>&#8226;&#160;Circadian Rhythm: Body temperature naturally fluctuates by 0.5&#176;C to 1&#176;C (0.9&#176;F to 1.8&#176;F) over 24 hours, known as the circadian rhythm. It generally reaches its lowest point between 1:00 and 4:00 a.m. and peaks around 4:00 p.m. before dropping again. This rhythm is remarkably consistent and does not typically vary with age.</li>
	<li>&#8226;&#160;Stress: Both physical and mental stress can increase body temperature through hormonal and neurological responses, boosting metabolism and heat production.</li>
	<li>&#8226;&#160;Environment: Environmental conditions significantly influence body temperature. For example, the body may struggle to lose heat in a warm room, raising the body temperature. It is essential in hospital settings, where patients may be under warm blankets or in rooms with high ambient temperatures. Conversely, exposure to cold without adequate clothing can lead to significant heat loss through radiation and conduction, lowering body temperature. It is a concern in outdoor settings or when patients are not appropriately dressed for the weather.</li>
	<li>&#8226;&#160;Temperature Alterations: Nurses play a crucial role in managing temperature alterations. Deviations from the normal temperature range can result from various factors, such as excessive heat generation, heat loss, minimal heat production, slight heat loss, or any combination thereof. Conditions like fever, hypothermia, or frostbite are examples of body temperatures that significantly deviate from the norm. Nurses&#39; understanding and intervention can make a significant difference in these situations.</li>
</ul>

As a nurse, it is vital to understand the factors affecting body temperature to monitor variations and effectively evaluate deviations from regular.
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Education

JoVE Core

Nursing

Unit 1

Vital Signs: Temperature

KEY TERMS AND CONCEPTS

body temperature changes and why they happen

Body temperature changes for many reasons, and age is one of the most important. Newborns have an immature system that must respond quickly to environmental change, so their temperature can shift more easily. Older adults can also have trouble regulating temperature because of age-related changes and other factors.

Exercise can raise body temperature because active muscles need more blood flow. The body also breaks down glucose and fat for energy, and that process produces heat. Hormone levels can change temperature too, especially in women. During ovulation, progesterone rises and can increase body temperature by acting on the hypothalamus, the brain area that helps control temperature. Temperature changes can also happen during menopause when vasomotor control for vasodilation and vasoconstriction becomes less stable.

Body temperature follows a circadian rhythm, which is the natural 24-hour pattern in the body. It usually changes by about 0.5°C to 1°C, or 0.9°F to 1.8°F, over a day. It is lowest between 1:00 and 4:00 a.m. and highest around 4:00 p.m. before it falls again. This pattern is very steady and does not usually change with age.

Stress can also increase body temperature. Physical stress and mental stress both trigger hormonal and nerve responses that raise metabolism and heat production. The environment matters as well. In a warm room or under warm blankets, the body may have trouble losing heat, so temperature can rise. In cold weather, or without enough clothing, heat loss through radiation and conduction can lower body temperature.

Temperature alterations can result from too much heat production, too much heat loss, too little heat production, or small changes in heat balance. These shifts can lead to fever, hypothermia, or frostbite. Nurses need to recognize these causes and respond quickly because good assessment and intervention can make a major difference.

Body Temperature Changes and Why They Happen

body-temperature-changes-and-why-they-happen

introduction to vital signs

How Nurses Check Vital Signs

Vital signs are basic body measurements that show how well essential functions are working. They include body temperature, pulse rate, respiratory rate, and blood pressure. These are often shortened to T, P, R, and BP. In some healthcare settings, oxygen saturation, or SpO2, is also included. Pain and level of consciousness may count as vital signs in certain situations. These measurements help healthcare professionals assess a person's well-being and spot changes in major body systems. They...

guidelines for measuring vital signs

Measuring Vital Signs for Accurate Nursing Care

Measuring vital signs accurately helps nurses track patient changes and respond with timely care. Careful technique also improves the reliability of the results. Before measuring, a nurse checks whether the patient is calm and comfortable. Anxiety or discomfort can affect the reading. The right equipment also matters. Blood pressure readings depend on using the correct cuff size, since a cuff that is too large or too small may give an inaccurate result. Nurses also inspect equipment for wear,...

body temperature

How the Body Regulates Temperature

The body regulates temperature by balancing heat production and heat loss. This balance helps keep core body temperature steady even during exercise or changes in the environment. Core temperature refers to the temperature of deep tissues under the skin, while surface temperature can change more easily. Heat is produced mainly by metabolic activity in the body’s core tissues. Blood carries this heat from the core to the skin, where it can be released into the environment. Core body temperature...

mechanism of heat transfer

How the Body Loses and Gains Heat

The body loses and gains heat through conduction, convection, evaporation, and radiation. These heat transfer mechanisms help the body stay in balance, or maintain homeostasis, when the environment is not thermoneutral. In a thermoneutral environment, the body is already in balance and does not need to use or release energy to keep its core temperature steady. Conduction is heat transfer through direct contact. It happens when skin touches an object with a different temperature. For example,...

Body temperature changes for many reasons, and age is one of the most important. Newborns have an immature system that must respond quickly to environmental change, so their temperature can shift more easily. Older adults can also have trouble regulating temperature because of age-related changes and other factors. Exercise can raise body temperature because active muscles need more blood flow. The body also breaks down glucose and fat for energy, and that process produces heat. Hormone levels...

increased body temperature

Fever Phases and Body Temperature Control

Fever is a rise in body temperature above 38°C (100.4°F). A person with fever is called febrile. The hypothalamus, a part of the brain that works like the body’s thermostat, controls temperature by using a thermoregulatory setpoint. It reads signals from cold and warm receptors throughout the body and adjusts temperature as needed. Fever usually starts when the hypothalamic setpoint changes in response to infection or illness. A virus such as influenza, a bacterium such as streptococcus, or...

types of fever

Fever Types and Heat-Related Conditions

Fever can happen for many reasons, and not all fevers come from infection. It may be linked to nervous system disorders, certain cancers, blood diseases such as leukemia, embolism, thrombosis, heatstroke, dehydration, surgical trauma, crushing injuries, or allergic reactions. Rigor is one fever pattern marked by a sudden, severe shivering attack. During rigor, body temperature rises quickly to hyperpyrexia levels, which means an extremely high fever. Hyperthermia is different from a typical...

patterns of fever

Fever Phases and Temperature Patterns

Fever has clear phases and several temperature patterns. The first phase is the onset or invasion phase, when body temperature begins to rise. This rise may happen suddenly or gradually. The second phase is the steady phase. During this stage, body temperature reaches its highest point and stays constant at a high level. The third phase is the defervescence or decline phase. In this stage, the elevated temperature returns to normal, either suddenly or gradually. Fever may appear as...

methods of reducing fever

Fever Care: Medicines and Cooling Steps

Fever care focuses on lowering body temperature and finding the cause of the fever. Common signs and symptoms include hot, dry skin, a flushed face, thirst, muscle aches, anorexia, headache, tachycardia, tachypnea, and fatigue. Proper treatment starts with identifying the root problem. Pharmacological methods use medicine to reduce fever. If a bacterial infection is the cause, healthcare providers collect culture specimens such as urine, blood, sputum, and wound samples, then prescribe the...

decreased body temperature

Hypothermia and Frostbite Signs

Hypothermia and frostbite are two cold-related conditions that can cause a decreased body temperature. They happen when heat loss from long exposure to cold becomes greater than the body’s ability to make heat. Core temperature readings help classify hypothermia and show how severe it is. Mild hypothermia occurs when core temperature falls between 32 °C (89.6 °F) and 35 °C (95 °F). It is linked to impaired thermoregulation, which means the body has trouble controlling its temperature. Moderate...

equipments used to measure body temperature

equipments-used-to-measure-body-temperature

Body Temperature Tools and Thermometer Types

Body temperature can be checked with several tools, and the result may be shown in Celsius or Fahrenheit. Different thermometers are used for different body sites and settings. Some give a reading in seconds, while others are older or single-use designs. Glass-bulb thermometers are hollow glass tubes with a bulb tip that holds a liquid such as ethanol or mercury. Mercury glass-bulb thermometers were once the standard for measuring body temperature. Today, many countries prohibit mercury...

temperature measurement sites

Body Temperature: Common Measurement Methods

Body temperature can be measured at several common sites, and each site has its own uses and limits. A thermometer is used to check temperature in the oral cavity, axillary region, temporal artery, and skin surface such as the forehead, abdomen, and axilla. Some sites give a closer estimate of true core temperature, which is the temperature inside the body. Core body temperature can be assessed in the rectum, tympanic membrane, pulmonary artery, esophagus, and urinary bladder. The oral site is...

assessing body temperature - tympanic membrane

assessing-body-temperature-tympanic-membrane

Using a Tympanic Thermometer Correctly

A tympanic membrane thermometer measures temperature through the ear. Correct use of the device helps support an accurate reading and reduces the chance of cross-contamination. Start with good hand hygiene before handling the thermometer. Turn it on and wait for the ready sign on the screen. Then place the probe cover in position before use. Ask the patient to tilt the head to the side for comfort. Check the ear canal for cerumen, or earwax, because it can block the probe lens cover. If...

assessing body temperature - oral

Oral Temperature Check with an Electronic Thermometer

Oral temperature checks use an electronic thermometer to measure body temperature through the mouth. Proper hand hygiene comes first to help prevent the spread of microorganisms. The thermometer is then removed from the charging unit, turned on, and used only after the ready sign appears. A probe cover is slid on until a click is heard. This helps prevent cross-contamination and keeps the cover in the correct place. The patient is asked to open the mouth, and the probe is placed under the...

assessing body temperature - rectal

Rectal Temperature Checks for Core Readings

Rectal temperature checks are a precise way to measure core body temperature. This method often gives a higher reading than oral temperature. It is used when an accurate internal temperature is needed. The procedure starts with hand hygiene and clean gloves to reduce cross-infection. The patient is placed in a side-lying position so the rectal area can be seen more easily. Only the anal region is exposed, and warmth and privacy are maintained. If feces or secretions are present, the area is...

assessing body temperature - axilla

Axillary Temperature Check with Digital Thermometer

Axillary body temperature is checked with a digital thermometer using a careful, step-by-step method. The goal is to get an accurate reading from the axilla, or underarm area, while keeping the patient comfortable and protected. Hand hygiene comes first, followed by clean gloves to help prevent infection and cross-contamination. The patient is then told what will happen so they can cooperate with the procedure. Privacy is maintained, only the axilla is exposed, and the patient is asked to stay...

assessing body temperature - temporal artery

assessing-body-temperature-temporal-artery

Temporal Artery Temperature Scan Steps

Temporal artery temperature scanning is a quick way to check a patient’s body temperature with a temporal artery thermometer. The process begins with hand hygiene and a fresh pair of gloves to help prevent cross-infection and keep the patient safe. The procedure should also be explained clearly so the patient knows what to expect and can cooperate with comfort. Before scanning, the forehead should be checked for moisture. If the skin is wet, it should be gently wiped with a clean cloth because...

key terms and concepts

Explore the main causes of body temperature changes, including age, exercise, hormones, circadian rhythm, stress, and environmental conditions.

Body Temperature Changes and Why They Happen | JoVE K12

JoVE Core Nursing offers concise animated lessons on nursing practices, covering health systems, nursing organizations, and health concepts. It includes practical communication, infection prevention, and nursing fundamentals, providing students with a clear understanding of nursing principles.

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Body Temperature Changes and Why They Happen

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