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Related Concept Videos

Asthma-II: Pathophysiology and Classification01:26

Asthma-II: Pathophysiology and Classification

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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:
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Asthma: Pathogenesis and Management01:20

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Asthma is a chronic pulmonary condition involving inflammation of the airways, hyper-reactivity, and reversible obstruction of the airways. This condition can significantly impact a person's quality of life, making breathing difficult and leading to distressing symptoms.
Asthma is classified as allergic and non-allergic. Allergens such as dust mites, pollen, and pet dander trigger allergic asthma, while factors like cold air, intense emotions, or exercise can induce non-allergic asthma.
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Acute Respiratory Failure-III01:30

Acute Respiratory Failure-III

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Hypercapnic respiratory failure, also known as Type 2 or ventilatory respiratory failure, is a severe condition characterized by the body's inability to effectively remove carbon dioxide (CO2) from the bloodstream. It leads to an arterial CO2 pressure (PaCO2) exceeding 45 mmHg and a blood pH above 7.35. This situation indicates that the body's ventilatory demand, or the ventilation needed to maintain normal PaCO2 levels, surpasses its supply or the maximum gas flow achievable without...
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Asthma-IV: Diagnostic and Management01:30

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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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Asthma-I: Introduction01:29

Asthma-I: Introduction

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Asthma is a chronic respiratory ailment that requires careful management due to its varying symptoms and influencing factors. It is characterized by airway inflammation, bronchial hyperresponsiveness, and reversible airflow obstruction, leading to symptoms like wheezing, shortness of breath, chest tightness, and coughing. The symptom frequency and intensity may vary considerably over time. It is also linked to immune system responses to allergens and irritants, highlighting the complex...
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Asthma-III: Symptoms and Complications01:24

Asthma-III: Symptoms and Complications

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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
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Related Experiment Video

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Inverse Probability of Treatment Weighting Propensity Score using the Military Health System Data Repository and National Death Index
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Cause of death coding in asthma.

Alexandria Chung1, George Addo Opoku-Pare1, Holly Tibble2,3

  • 1Usher Institute, University of Edinburgh, Edinburgh, Scotland.

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Clinical coding of asthma deaths is not always accurate. Reviewing patient history is crucial for validating asthma-related mortality and identifying potential misclassifications, especially with comorbidities.

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Area of Science:

  • Medical Informatics
  • Respiratory Medicine
  • Public Health

Background:

  • Clinical coding aims for objectivity but is influenced by clinical and bureaucratic practices.
  • Variations in death certification and International Classification of Diseases (Version 10; ICD-10) coding can affect data accuracy.
  • Understanding these variations is crucial for interpreting clinical datasets.

Purpose of the Study:

  • To investigate the accuracy and patterns of asthma-related mortality coding.
  • To analyze the influence of different ICD-10 codes (J45 and J46) on reported causes of death.
  • To identify potential misclassifications in asthma mortality data.

Main Methods:

  • Analysis of 91,022 deaths from the Scottish Asthma Learning Healthcare System dataset (2000-2017).
  • Identification of asthma-related deaths using ICD-10 codes J45 (asthma diagnosis) and J46 (asthma attack).
  • Categorization of codes and examination of contributing causes of death.

Main Results:

  • Approximately 1 in 200 deaths were coded as asthma-related.
  • Fewer than 1% of records used both J45 and J46 codes.
  • Infection, particularly pneumonia, was more frequently a contributing cause when J45 was the primary code compared to J46.

Conclusions:

  • Further review of patient histories is essential for validating asthma deaths.
  • Potential mis-recorded non-asthma deaths require identification, especially in patients with comorbidities.
  • Ensuring accurate clinical coding is vital for reliable asthma mortality research.