Today our topic of discussion is Vital Sign Measurement
Vital Sign Measurement
Normal (oral) = 35.8°C to 37.3°C.Oral temperature: Place the thermometer in the mouth under the tongue and instruct patient to keep mouth closed. Leave the thermometer in place for as long as is indicated by the device manufacturer.
Factors Influences Heat Loss
- Sleep: Body temperature is low
- Fasting: Leads to decreased heat production
- Illness and lower vitality: Due to depressed nervous system, the heat production is lowered
- Prolonged exposure to cold
- Use of narcotic drugs.
Body Heat is Lost through
- Conduction: Transfer of heat from body to substance (air, water and cloths) directly in contact
- Radiation: Transfer heat from body to heat waves which travel through the space
- Evaporation: Transfer to heat from body in form of vapors (liquid is converted into vapors)
- Convection: It is transfer of heat from the surface of one subject to the surface, such as skin by movements of heated air or fluid particles.

Preparation of the Equipment
- If a thermometer is included in the admission pack, keep it at the patient’s bedside and, on discharge, allow him to take home
- Otherwise, obtain a thermometer from the nurse’s station or central supply department
- If use an electronic thermometer, make sure it’s been recharged
- Wipe the thermometer before use (Fig. 8.2).
Equipment
- Mercury or electronic thermometer, chemical dot thermometer, or tympanic thermometer
- Water soluble lubricant or petroleum jelly (for rectal temperature)
- Facial tissue
- Disposable thermometer sheath or probe cover
- Alcohol sponge.
Common Sites for Taking Body Temperature
- Mouth
- Axilla
- Groin
- Vagina
- Rectum.
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