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Related Concept Videos

Temperature Measurement Sites01:14

Temperature Measurement Sites

3.2K
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...
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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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Patterns of Fever01:26

Patterns of Fever

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Before understanding the types and patterns of fever, it is essential to know its phases.
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Calculating and Interpreting the Linear Correlation Coefficient01:11

Calculating and Interpreting the Linear Correlation Coefficient

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The correlation coefficient, r, developed by Karl Pearson in the early 1900s, is numerical and provides a measure of strength and direction of the linear association between the independent variable, x, and the dependent variable, y. Hence, it is also known as the Pearson product-moment correlation coefficient. It can be calculated using the following equation:
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Interpreting Run Charts01:25

Interpreting Run Charts

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Run charts, essentially line graphs plotted over time, serve as fundamental yet effective tools for process analysis. They chronicle data sequentially, facilitating the identification of trends, shifts, or cyclical movements. This graphical representation is instrumental in determining whether a process is stable or exhibits signs of potential instability indicative of special cause variation. In the healthcare domain, run charts depict infection rates over time, enabling hospitals to monitor...
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Assessing Body Temperature - Tympanic membrane01:14

Assessing Body Temperature - Tympanic membrane

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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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A Method of Trigonometric Modelling of Seasonal Variation Demonstrated with Multiple Sclerosis Relapse Data
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Association between diurnal temperature range and sinusitis: a multi-city time-series analysis.

Min Young Park1, Youn-Hee Lim2, Dong-Wook Lee3

  • 1Department of Occupational and Environmental Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.

International Journal of Environmental Health Research
|October 22, 2025
PubMed
Summary
This summary is machine-generated.

Diurnal temperature range (DTR) is linked to increased sinusitis risk. This finding highlights the need for public health strategies to mitigate the impact of temperature fluctuations on respiratory health.

Keywords:
Sinusitisair pollutionrespiratory tract infectionstemperature

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Area of Science:

  • Environmental Health
  • Epidemiology
  • Respiratory Medicine

Background:

  • Sinusitis is a prevalent upper respiratory tract infection with significant healthcare costs.
  • Environmental factors, including temperature variability, are increasingly recognized as potential contributors to respiratory illnesses.
  • Understanding the impact of diurnal temperature range (DTR) on sinusitis risk is crucial for public health interventions.

Purpose of the Study:

  • To investigate the association between diurnal temperature range (DTR) and the risk of developing acute and chronic sinusitis.
  • To analyze subgroup variations in DTR-related sinusitis risk based on demographics and environmental factors.

Main Methods:

  • Utilized the Korean National Health Information Database (NHID) from 2006-2019, covering 16 administrative regions.
  • Employed a two-stage analytical approach combining generalized additive models and meta-analysis to assess the DTR-sinusitis relationship.
  • Conducted subgroup analyses stratified by sex, age group, mean temperature percentiles, and PM10 concentration.

Main Results:

  • A significant association was found between DTR and both acute and chronic sinusitis.
  • Pooled relative risks for DTR were 1.0074 (95% CI: 1.0060-1.0089) for acute sinusitis and 1.0082 (95% CI: 1.0064-1.0101) for chronic sinusitis at lag 0-4 days.
  • Increased sinusitis risk was observed in individuals aged 15-65 years, men, and in regions with specific mean temperature ranges and lower PM10 levels.

Conclusions:

  • Diurnal temperature range (DTR) is demonstrably associated with an increased risk of sinusitis.
  • Findings suggest that temperature variability is a relevant factor in sinusitis etiology.
  • Results provide a basis for developing preventive strategies against sinusitis, a common and costly health issue.