Chapter 19 Flashcards
Objective guideposts that provide data to determine a person’s state of health
Vital Signs
Body temperature is maintained by the what?
Hypothalamus
Functions as body’s thermostat. Only allows temperature to vary 1 to 2 degrees F throughout the day.
Hypothalamus
Temperature is maintained through a balance of what?
- Heat produced in the body
- Heat lost from the body
When minor changes in temperature occur, what senses this and makes adjustments so temperature stays within normal range? Example: Playing tennis on a hot day–body’s heat-cooling mechanism is activated; perspiration occurs to remove excess heat
Hypothalamus
One of the many ways heat is lost. It is the excretion of moisture through the pores of the skin. When moisture evaporates, heat is released, cooling the body
Perspiration
Heat is lost through this also. Transfer of heat in the form of eaves.
Radiation
A way heat is lost. Transfer of heat from one object to another by direct contact.
Conduction
A way heat is lost. Transfer of heat through air currents. Cool air currents cause body to lose heat.
Convection
What is the normal temperature range?
97 degrees F to 99 degrees F
What is the average body temperature?
98.6 degrees F (37 degrees Celsius)
Fever. Above 100.4 degrees F. Heat being produced is greater than heat being lost.
Pyrexia
99 degrees F to 100.4 degrees F
Low-grade fever
Above 105.8 degrees F. Serious condition and generally fatal above 109.4 degrees F
Hyperpyrexia
Below 97 degrees F. Classified as subnormal. Heat is being lost greater than heat being produced. Person cannot usually survive with a temp below 93.2 F
Hypothermia
Does age play a role in temperature? Do infants and young children get high or low temperature compared to adults?
yes. Higher temperature (thermoregulatory) system not yet fully established
Do the elderly have lower o higher temperature? What is this due to?
Low temperature
Due to: - loss of subcutaneous fat, lack of exercise, and loss of thermoregulatory control
During sleep, body metabolism and muscle contractions slow down. Causes temperature to be low or high in the morning?
Diurnal variations
- low
Do emotional states increase or decrease temperature? What about exercise? and pregnancy?
increase
Person who has a fever above 100.4 is considered this…
febrile
person who does not have a fever is considered this..
afebrile
Any substance that produces fever like pathogens. Resets hypothalamus causing temperature to increase above normal
Pyrogen
When temperature begins to rise. May be slow or sudden. Patient experiences coldness, chills, and increased pulse and respiratory rate
Onset of fever
Body temperature fluctuates minimally– always remains elevated
Continuous