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Related Concept Videos

Assessing Body Temperature - Temporal Artery01:19

Assessing Body Temperature - Temporal Artery

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Here is a stepwise guide to assessing the body temperature at the temporal artery using a temporal artery thermometer
Step 1: Perform hand hygiene and don a fresh pair of gloves to prevent cross-infection and ensure patient safety.
Step 2: Explain the procedure to the patient to establish trust. Clear communication establishes trust with the patient, ensures they understand what to expect, promotes cooperation, and enhances comfort during the procedure.  
Step 3: Assess the patient's...
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Assessing Body Temperature - Oral01:14

Assessing Body Temperature - Oral

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Here are the steps to accurately measure oral temperature using an electronic thermometer:
Step 1:
Start by practicing proper hand hygiene to prevent the spread of microorganisms.
Step 2:
Take the thermometer out of the charging unit, switch it on, and wait for the ready sign.
Step 3:
Gently slide the probe cover until a click is heard. This simple action prevents cross-contamination and ensures the correct placement of the probe cover.
Step 4:
Instruct the patient to open their mouth and place...
816
Temperature Measurement Sites01:14

Temperature Measurement Sites

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A thermometer measures body temperature. The common sites for measuring body temperature are the oral cavity, axillary region, temporal artery, and skin surface, such as the forehead, abdomen, and axilla. True core body temperature is assessed in the rectum, tympanic membrane, pulmonary artery, esophagus, and urinary bladder.
Oral: When assessing oral temperature, the thermometer tip should be placed under the tongue in the posterior sublingual pocket. It offers accurate readings and can be...
2.1K
Assessing Body Temperature - Tympanic membrane01:14

Assessing Body Temperature - Tympanic membrane

645
Assessing tympanic membrane temperature involves using a tympanic membrane thermometer (TMT). Here is a step-by-step guide:
Step 1: Begin by practicing good hand hygiene to prevent the transmission of microorganisms.
Step 2: Turn on the thermometer and wait until the ready sign appears on the screen to ensure accurate measurement.
Step 3: Slide the probe cover in place to prevent cross-contamination.
Step 4: Instruct the patient to tilt their head to the side for comfort and check for cerumen...
645
Equipments Used to Measure Body Temperature01:13

Equipments Used to Measure Body Temperature

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Body temperature can be assessed using various devices and measured in Celsius or Fahrenheit.
Glass-bulb Thermometer:
Glass-bulb thermometers are hollow glass tubes with a bulb tip containing liquid such as ethanol or mercury. Historically, glass bulb mercury thermometers were the standard device to measure body temperature. Today, mercury thermometers are prohibited in many countries due to the hazardous effects of mercury and the risk of exposure if the glass bulb breaks. In general,...
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Assessing Body Temperature - Rectal01:27

Assessing Body Temperature - Rectal

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Rectal temperature measurement is considered the most precise method for assessing core body temperature and typically registers higher than oral temperature. For adults, the rectal thermometer should be inserted 1 to 1.5 inches into the rectum to obtain the most accurate reading.
Follow these steps for rectal temperature assessment:
Step 1: Perform hand hygiene and don clean gloves to prevent cross-infection.
Step 2: Position the patient in a side-lying position to better visualize the rectal...
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A novel method for measuring sublingual temperature using conventional non-contact forehead thermometer.

Chakrapani Mahabala1, Pradeepa H Dakappa2, Arjun R Gupta1

  • 1Department of Internal Medicine, Kasturba Medical College,Mangalore, Manipal Academy of Higher Education, Manipal, Karnataka, 575001, India.

F1000Research
|September 9, 2022
PubMed
Summary

Non-contact infrared thermometers can accurately measure sublingual temperature, providing a quick and reliable estimation of core body temperature. This method correlates closely with tympanic readings, offering a convenient alternative for temperature assessment.

Keywords:
Sublingual temperatureinfrared thermometertympanic thermometer.

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Area of Science:

  • Medical Devices
  • Thermometry
  • Clinical Measurement

Background:

  • Sublingual temperature measurement is a recognized proxy for core body temperature.
  • Non-contact infrared thermometers (IR) offer potential for rapid, convenient temperature assessment.
  • Previous studies have not evaluated IR thermometers for sublingual temperature measurement.

Purpose of the Study:

  • To assess the accuracy of non-contact infrared thermometers for sublingual temperature measurement.
  • To compare sublingual IR temperature readings with tympanic thermometer recordings.
  • To establish the utility of this novel method for estimating core temperature.

Main Methods:

  • A cross-sectional study involving 29 patients and 328 paired temperature recordings.
  • Simultaneous sublingual (IR thermometer) and tympanic temperature measurements were taken.
  • Patients maintained mouth closure for five minutes prior to sublingual IR temperature acquisition.

Main Results:

  • Sublingual IR temperature showed a strong correlation with tympanic temperature (r=0.86, p<0.001).
  • The mean difference between sublingual IR and tympanic temperatures was 0.21°C (SD: 0.48°C).
  • High intra-class correlation (ICC=0.830) was observed between sublingual and core temperatures, with 90% sensitivity and 89% specificity for fever detection.

Conclusions:

  • Non-contact infrared thermometers can be accurately used to measure sublingual temperature.
  • This method provides a rapid, convenient, and non-contact estimation of core body temperature.
  • The findings support the use of modified IR thermometers for clinical temperature monitoring.