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Related Concept Videos

Thermometers and Temperature Scales01:22

Thermometers and Temperature Scales

Any physical property that depends consistently and reproducibly on temperature can be used as the basis of a thermometer. For example, volume increases with temperature for most substances. This property is the basis for the common alcohol thermometer and the original mercury thermometers. Other properties used to measure temperature include electrical resistance, color, and the emission of infrared radiation.
As many physical properties depend on temperature, the variety of thermometers is...
Temperature Measurement Sites01:14

Temperature Measurement Sites

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...
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...
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 - 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...
Assessing Body Temperature - Tympanic membrane01:14

Assessing Body Temperature - Tympanic membrane

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...

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Related Experiment Video

Updated: Jul 10, 2026

A 3D-printed Chamber for Organic Optoelectronic Device Degradation Testing
08:29

A 3D-printed Chamber for Organic Optoelectronic Device Degradation Testing

Published on: August 10, 2018

Video-Rhino-Hygrometer (VRH).

Manuele Casale1, Valerio Cusimano, Fabrizio Salvinelli

  • 1Faculty of Medicine, Università CAMPUS Bio-Medico di Roma, Italy.

Conference Proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference
|October 20, 2007
PubMed
Summary

A new Video-Rhino-Hygrometer (VRH) offers a non-invasive method for diagnosing nasal obstructions. This technique analyzes breath condensation patterns, providing results comparable to traditional rhinomanometry with improved patient comfort and reduced examination time.

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Area of Science:

  • Otolaryngology
  • Medical Imaging
  • Respiratory Physiology

Background:

  • Rhinomanometry is used to diagnose nasal cavity and nostril pathologies.
  • Anatomical variations can cause nasal obstruction and affect respiration.
  • Current rhinomanometry methods have drawbacks including pad-induced airflow alteration, low reproducibility, and patient discomfort.

Purpose of the Study:

  • To introduce a novel, non-invasive diagnostic methodology called Video-Rhino-Hygrometer (VRH).
  • To present a specific device designed for performing the VRH measurement.
  • To evaluate the efficacy and patient experience of VRH compared to traditional rhinomanometry.

Main Methods:

  • The VRH method analyzes images of breath condensation on a surface.
  • A webcam records these condensation patterns.
  • Image processing algorithms extract clinical features for diagnosis, evolving from the Glatzel method.

Main Results:

  • The VRH approach demonstrated comparable diagnostic results to classical rhinomanometry.
  • The method achieved high reproducibility.
  • VRH significantly improved patient comfort and reduced examination duration.

Conclusions:

  • VRH represents an automated advancement over traditional methods like Glatzel.
  • The technique offers a more comfortable and efficient alternative for diagnosing nasal airflow obstructions.
  • VRH shows promise for widespread clinical adoption in nasal respiratory diagnostics.