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Related Concept Videos

Assessing Body Temperature - Temporal Artery01:19

Assessing Body Temperature - Temporal Artery

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 forehead...
Equipments Used to Measure Body Temperature01:13

Equipments Used to Measure Body Temperature

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,...
Assessing Body Temperature - Axilla01:14

Assessing Body Temperature - Axilla

Procedural Guide for Assessing Axillary Body Temperature using a Digital Thermometer:
Step 1: Perform hand hygiene and put on clean gloves to maintain infection control and prevent cross-contamination.
Step 2: Prepare the patient by explaining the procedure to ensure understanding and cooperation. Ensure privacy, expose the axilla, and inform the patient that minimal movement is crucial for an accurate reading.
Step 3: Adjust the patient’s clothing to expose only the axilla. It minimizes...
Assessing Body Temperature - Rectal01:27

Assessing Body Temperature - Rectal

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...
Assessing Body Temperature - Oral01:14

Assessing Body Temperature - Oral

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...
Factors Influencing Heart Rate01:30

Factors Influencing Heart Rate

The heart rate, or pulse rate, is a vital indicator of cardiovascular health. It reflects the number of times the heart beats per minute. Various physiological and environmental factors influence heart rate, increasing or decreasing cardiac output. Understanding these factors is crucial for assessing heart function and identifying potential health issues.
Let us explore the significant factors affecting heart rate, including age, body temperature, posture, acute pain, chemical influences,...

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Impedance Pneumography for Minimally Invasive Measurement of Heart Rate in Late Stage Invertebrates
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Estimation of human core temperature from sequential heart rate observations.

Mark J Buller1, William J Tharion, Samuel N Cheuvront

  • 1US Army Research Institute of Environmental Medicine, Natick, MA 01760, USA. mark.j.buller.civ@mail.mil

Physiological Measurement
|June 20, 2013
PubMed
Summary

A new model estimates core body temperature (CT) using heart rate (HR) measurements, aiding heat exhaustion detection in demanding occupations. This non-invasive method offers practical thermal strain insights for workplace safety.

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Area of Science:

  • Occupational health and safety
  • Biomedical engineering
  • Environmental physiology

Background:

  • Core body temperature (CT) and heart rate (HR) are key indicators of heat stress.
  • Continuous CT monitoring is challenging in real-world occupational settings.
  • Accurate thermal strain assessment is crucial for preventing heat exhaustion.

Purpose of the Study:

  • To develop and validate a model for estimating core body temperature (CT) using heart rate (HR) data.
  • To provide a practical, non-invasive method for monitoring thermal work strain.
  • To enhance heat exhaustion prevention strategies in occupational environments.

Main Methods:

  • A Kalman filter model was developed to estimate CT from HR measurements.
  • Model training utilized data from 17 volunteers during a 24-hour military field exercise.
  • Validation involved laboratory and field studies (N=83) with diverse environmental and physiological conditions.

Main Results:

  • The CT estimation model demonstrated a low bias of -0.03 ± 0.32 °C.
  • 95% of CT estimates fell within ±0.63 °C of actual values.
  • Model accuracy is comparable to invasive CT measurement methods.

Conclusions:

  • The developed HR-based CT estimation model offers a practical solution for monitoring thermal strain.
  • This approach can aid in the early detection of heat exhaustion in occupational settings.
  • The model provides sufficient accuracy for workplace thermal risk assessment.