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Related Concept Videos

Asthma-II: Pathophysiology and Classification01:26

Asthma-II: Pathophysiology and Classification

Asthma is a prevalent chronic respiratory condition marked by inflammation and hyperresponsiveness of the airways. Its pathophysiology involves complex interactions among inflammatory pathways, immune responses, and neural mechanisms.
Additionally, environmental and genetic factors play crucial roles in determining an individual's susceptibility to asthma and the severity of their condition.
Critical processes in asthma pathophysiology include:
Classification of Illness01:17

Classification of Illness

The meaning of illness is individualized to each person who experiences an alteration in health. In contrast, disease is a medical term indicating a pathological change in the structure and function of the body or mind. It is a condition that has specific symptoms and boundaries.
An illness is a response to a disease in which the person's level of functioning is changed compared with a previous level. The general classification of illness includes acute and chronic.
Acute illness is severe and...
Principles of Disease Surveillance01:26

Principles of Disease Surveillance

Disease surveillance is the systematic collection, analysis, and interpretation of health data essential to the planning, implementation, and evaluation of public health practice. This process integrates data dissemination to entities responsible for preventing and controlling disease, injury, and disability. Surveillance systems provide crucial information for action, helping public health authorities make informed decisions to manage and prevent outbreaks, ensure public safety, optimize...
Asthma-III: Symptoms and Complications01:24

Asthma-III: Symptoms and Complications

Asthma, a common chronic respiratory condition, is classified considering the frequency and severity of symptoms alongside lung function impairment. Understanding this classification is essential for appropriate treatment and management. Here's a detailed look at the classification of asthma and its clinical features and complications:
Classification of Asthma
Asthma III: Clinical Manifestations01:13

Asthma III: Clinical Manifestations

Asthma presents with a characteristic pattern of episodic respiratory symptoms that reflect underlying airway inflammation, bronchoconstriction, and mucus hypersecretion. Although severity varies among individuals, certain clinical manifestations are considered hallmarks of the disorder and often guide diagnosis and assessment.Respiratory SymptomsA persistent cough is one of the most common early features of asthma. It is frequently dry and tends to worsen at night or in the early morning,...
Asthma-IV: Diagnostic and Management01:30

Asthma-IV: Diagnostic and Management

The diagnosis and management of asthma are comprehensive, encompassing clinical assessments, lung function tests, and pharmacological interventions. Here's an overview:
Clinical Assessment for Asthma:
This is the first step in diagnosing and managing asthma. It includes:

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Related Experiment Video

Updated: Jun 1, 2026

Measurement of Aerosols Optical Thickness of the Atmosphere using the GLOBE Handheld Sun Photometer
06:27

Measurement of Aerosols Optical Thickness of the Atmosphere using the GLOBE Handheld Sun Photometer

Published on: May 29, 2019

Associations between ozone and morbidity using the Spatial Synoptic Classification system.

Adel F Hanna1, Karin B Yeatts, Aijun Xiu

  • 1Institute for the Environment, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA. ahanna@unc.edu

Environmental Health : a Global Access Science Source
|May 26, 2011
PubMed
Summary

Synoptic circulation patterns influence air pollution. Specific air masses, like dry tropical, were linked to higher ozone levels and increased hospital admissions for asthma and myocardial infarction.

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Identification of Disease-related Spatial Covariance Patterns using Neuroimaging Data
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Identification of Disease-related Spatial Covariance Patterns using Neuroimaging Data

Published on: June 26, 2013

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Last Updated: Jun 1, 2026

Measurement of Aerosols Optical Thickness of the Atmosphere using the GLOBE Handheld Sun Photometer
06:27

Measurement of Aerosols Optical Thickness of the Atmosphere using the GLOBE Handheld Sun Photometer

Published on: May 29, 2019

Identification of Disease-related Spatial Covariance Patterns using Neuroimaging Data
14:27

Identification of Disease-related Spatial Covariance Patterns using Neuroimaging Data

Published on: June 26, 2013

Area of Science:

  • Environmental Science
  • Public Health
  • Meteorology

Background:

  • Synoptic circulation patterns significantly impact air quality and health outcomes.
  • Understanding the interplay between air masses and pollution is crucial for public health.
  • Previous research suggests a link between air pollution and respiratory/cardiovascular diseases.

Purpose of the Study:

  • To evaluate how synoptic circulation patterns (air masses) modify the association between ambient ozone and hospital admissions for asthma and myocardial infarction (MI) in North Carolina.
  • To identify specific air mass types that exacerbate the health impacts of ozone exposure.

Main Methods:

  • Utilized the Spatial Synoptic Classification system to categorize daily air mass types over a 9-year period (1996-2004).
  • Collected daily ozone concentrations and hospital admission data for asthma and MI from North Carolina.
  • Employed generalized linear models to analyze the association between ozone, air mass types, and hospitalizations, adjusting for meteorological factors and day-of-the-week effects.

Main Results:

  • Ozone exposure was associated with increased asthma hospital admissions under dry tropical, transitional, and moist tropical air masses.
  • Myocardial infarction hospital admissions showed an association with ozone only under extreme moist tropical air masses (5-day lag).
  • Dry tropical air masses exhibited the highest ozone concentrations.

Conclusions:

  • Specific synoptic circulation patterns, particularly dry tropical and moist tropical air masses, are linked to elevated ozone levels.
  • These air masses, in conjunction with ambient ozone, are associated with increased hospitalizations for asthma and myocardial infarction.
  • The findings highlight the importance of considering meteorological factors in air pollution and health impact assessments.