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Difference Between Acute and Chronic Asthma Exacerbation

What is Acute and Chronic Asthma Exacerbation?

Asthma is defined as a serious inflammatory disorder of the airways associated with the airways hyperresponsiveness and airflow obstruction that is often reversible either spontaneously or with treatment.

Asthma Exacerbations are of two types – Acute Asthma Exacerbations and Chronic Asthma Exacerbations. Acute Asthma Exacerbations are sudden in onset and Chronic Asthma Exacerbations are a long-term syndrome.

 

Acute Asthma Exacerbation

Acute Asthma Exacerbation happens when there is a sudden episode of progressive worsening of symptoms of asthma, like wheezing, chest tightness, cough, and shortness of breath. Triggers include

Acute exacerbations can be triggered by a variety of things. Some of the more common triggers are:

  • Colds, dry and cold air
  • Upper respiratory infections
  • Allergens such as mold, dust mites, and pollen
  • Smoke of tobacco
  • Exercise
  • Cats and Dogs
  • Gastroesophageal Reflux Disease

 

Chronic Asthma Exacerbation

Chronic Asthma Exacerbation happens when the asthma symptoms are intense and there is chronic inflammation and narrowing of the airways in the lungs. In chronic asthma, an asthma attack, is called a flareup or exacerbation. Triggers include:

  • Respiratory viral infection, mainly rhinovirus
  • Sensitizing agents
  • Allergens like pollen, cockroach droppings, weeds, animals, mold, grass, and dust mite
  • Air pollution, chemical fumes, household cleaners, strong alcoholic perfumes or other substances in the air
  • Stress and anxiety
  • Some medications like aspirin and other NSAIDs (nonsteroidal anti-inflammatory drugs) such as naproxen and ibuprofen. Some beta-blockers – which treat glaucoma, high blood pressure, heart disease, and migraine
  • Illness like severe sinusitis (inflammation of sinuses), flu, heartburn and acid reflux

 

Difference between Acute and Chronic Asthma Exacerbation

Definition

Acute Asthma Exacerbation

Sudden in onset

Chronic Asthma Exacerbation

Long – developing syndrome

Key features

Acute Asthma Exacerbation

Key Features of Acute Asthma are 

  • IgE production 
  • Mucus Hypersecretion 
  • Airway Hyperactivity
  • Eosinophilic inflammation in the pun g

Chronic Asthma Exacerbation

Key features of Chronic Asthma are 

  • Smooth muscle hypertrophy
  • Fibrosis and remodelling 
  • Epithelial cell changes 
  • Goblet cell metaplasia 

Symptoms

Acute Asthma Exacerbation

  • Agitation
  • Increase in heart rate
  • Reduced lung function
  • Hyperventilation
  • Difficulty in difficulty speaking or breathing

Chronic Asthma Exacerbation

  • Tightened neck and chest muscles, called retractions
  • Chest tightness or pressure
  • Constant coughing
  • Feelings of anxiety or panic
  • Feel confused, lost, agitated and unable to focus
  • Very rapid breathing
  • Severe wheezing when breathing both in and out
  • Difficulty and discomfort in talking
  • Pale, sweaty face
  • Bluish tint to your lips
  • Hunched shoulders, and strained muscles in the neck and stomach 

Causes

Acute Asthma Exacerbation

  • An overly sensitive immune system that makes the bronchial tubes become inflamed and swollen when you’re exposed to certain triggers. Asthma triggers vary from person to person.
  • Common acute asthma attack triggers include: Mold, pollen, pets, and dust mites.

Chronic Asthma Exacerbation

  • Lung infections, such as a cold or the flu
  • Strong emotions and stress
  • Smoke inhalation
  • Preservatives added to some types of foods and beverages
  • Certain medications, including aspirin, beta-blockers, naproxen, and ibuprofen
  • Menstrual cycle in some women
  • Gastroesophageal reflux disease (GERD)

Subset – Life threatening

Acute Asthma Exacerbation

Dyspnea interferes with or limits usual activity

Chronic Asthma Exacerbation

Too dyspneic to speak, perspiration

Clinical Course

Acute Asthma Exacerbation

  • Usually needs frequent visits to emergency department and even hospitalization
  • Oral systemic corticosteroids; some symptoms last for greater than 3 days after the start of treatment
  • Partial relief and comfort from frequently inhaled Short-acting beta-agonists (SABAs) like albuterol and levalbuterol
  • Adjunctive therapies are beneficial

Chronic Asthma Exacerbation

Hospitalization, emergency visits and even intensive care unit (ICU)

  • Very less or no relief and comfort from frequently inhaled Short-acting beta-agonists (SABAs) like albuterol and levalbuterol
  • Intravenous corticosteroids – Fluticasone (Flovent HFA), Budesonide (Pulmicort Flexhaler), Mometasone (Asmanex Twisthaler), Beclomethasone (Qvar RediHaler), Ciclesonide (Alvesco)
  • Adjunctive therapies are sometimes helpful

 

Summary of Difference between Acute vs Chronic Asthma Exacerbation

The points of difference between Acute Asthma exacerbation and Chronic Asthma exacerbation have been summarized as below:

 

Dr. Amita Fotedar -Dr

Research Consultant: PhD in Environmental Sciences at History of working in Elite Research Institutes like United Nations Development Program
Dr Amita Fotedar is an experienced Research Consultant with a demonstrated history of working in elite Research Institutes like United Nations Development Programme, Istanbul, Turkey, Indian Institute of Science, Bangalore, India and International Water Management Institute, Colombo, Srilanka.
Skilled in Biological Sciences, Environmental Health, Natural Resources, Water Resource Management, and Renewable Energy, she has a PhD in Environmental Sciences from the University of Jammu, India. Apart from her PhD, she has a Post Graduate Diploma in International Studies from International Pacific University, New Zealand Campus, and has also been rewarded a certification in Climate Studies from Harvard University (EdX). She is a recipient of Academic Excellence Award from International Pacific University, New Zealand campus. At present she is pursuing MicroMasters in Sustainable Energy from The University of Queensland, Australia.
She is a Co- founder and Research Advisor for a New Zealand based Sustainability and Environmental Services Entity and is also a member of the Environmental Peacebuilding Association at SDG Academy, offering mentorship (a collaborative network of academic and research institutions under the auspices of UN Secretary-General). She has around 35 national and international publications to her credit.
Dr. Amita Fotedar -Dr

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References :


[0]Camargo Jr, C. A., Rachelefsky, G., & Schatz, M. (2009). Managing asthma exacerbations in the emergency department: summary of the National Asthma Education and Prevention Program Expert Panel Report 3 guidelines for the management of asthma exacerbations. Proceedings of the American Thoracic Society, 6(4), 357-366.

[1]Dougherty, R. H., & Fahy, J. V. (2009). Acute exacerbations of asthma: epidemiology, biology and the exacerbation‐prone phenotype. Clinical & Experimental Allergy, 39(2), 193-202.

[2]Pollart, S. M., Compton, R. M., & Elward, K. S. (2011). Management of acute asthma exacerbations. American family physician, 84(1).

[3]Image credit: https://upload.wikimedia.org/wikipedia/commons/9/92/Blausen_0620_Lungs_NormalvsInflamedAirway.png

[4]Image credit: https://live.staticflickr.com/4011/5081431722_12ebc9227b_z.jpg

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