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Related Concept Videos

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...
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Special considerations while measuring oxygen saturation01:19

Special considerations while measuring oxygen saturation

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Assessing respiratory rate concurrently with pulse measurement is fundamental to patient care, providing valuable insights into the patient's respiratory function. The normal breathing rate for an adult usually falls within a normal range of 12 to 20 breaths per minute. Abnormal respiratory rates can signal underlying health conditions or the need for immediate intervention.
Ensuring accuracy in vital sign recordings while prioritizing patient comfort and minimizing anxiety is...
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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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Assessing Body Temperature - Axilla01:14

Assessing Body Temperature - Axilla

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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...
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Assessing Body Temperature - Temporal Artery01:19

Assessing Body Temperature - Temporal Artery

891
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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Increased Body Temperature01:25

Increased Body Temperature

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A body temperature above  38°C  (100.4 °F) is known as fever or pyrexia, and a person with fever is termed 'febrile.' Typically, the hypothalamus, a part of the brain that acts as the body's thermostat, regulates body temperature through a thermoregulatory setpoint. It receives signals from cold and warm thermal receptors throughout the body and adjusts the body's temperature accordingly. Fever occurs when this hypothalamic setpoint is altered, usually in...
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Related Experiment Video

Updated: Dec 8, 2025

Assessment of Pulmonary Capillary Blood Volume, Membrane Diffusing Capacity, and Intrapulmonary Arteriovenous Anastomoses During Exercise
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Verification Testing to Confirm V˙O2max in a Hot Environment.

J Luke Pryor1, Robert Garcia Leija2, Jacobo Morales2

  • 1Center for Research and Education in Special Environments, Department of Exercise and Nutrition Sciences, University at Buffalo, Buffalo, NY.

Medicine and Science in Sports and Exercise
|September 21, 2020
PubMed
Summary

A verification test reliably confirmed maximal oxygen uptake (V˙O2max) during exercise in the heat for most cyclists. However, test-retest reliability in hot conditions may need protocol adjustments for accuracy.

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Conducting Maximal and Submaximal Endurance Exercise Testing to Measure Physiological and Biological Responses to Acute Exercise in Humans
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Conducting Maximal and Submaximal Endurance Exercise Testing to Measure Physiological and Biological Responses to Acute Exercise in Humans

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Area of Science:

  • Exercise Physiology
  • Environmental Physiology
  • Sports Science

Background:

  • Maximal oxygen uptake (V˙O2max) is a key indicator of cardiorespiratory fitness.
  • Accurate V˙O2max assessment is crucial for training and performance evaluation.
  • Hot environments pose challenges to physiological testing validity and reliability.

Purpose of the Study:

  • To assess the validity and reliability of a verification test for confirming maximal oxygen uptake (V˙O2max) during graded exercise testing (GXT) in a hot environment.
  • To determine if a specific verification protocol can accurately measure V˙O2max under heat stress.

Main Methods:

  • Twelve recreationally trained cyclists underwent a GXT and a subsequent biphasic supramaximal-load verification test in a hot environment (39°C, 32% RH).
  • Recovery between tests was standardized based on gastrointestinal temperature returning to baseline.
  • Data were analyzed for V˙O2max differences, confirmation rates, and Bland-Altman agreement.

Main Results:

  • The mean V˙O2max from the verification test was significantly lower than the GXT V˙O2max (P = 0.02).
  • The verification test confirmed GXT V˙O2max in 92% of participants.
  • High variability (CV 9.6%) and wide limits of agreement suggest potential test-retest reliability issues in the heat.

Conclusions:

  • Verification testing demonstrates robust utility for confirming GXT V˙O2max in hot conditions.
  • Protocol adjustments for work rate and recovery are recommended to improve test-retest reliability in hot environments.
  • Further research may refine protocols for optimal V˙O2max assessment in extreme heat.