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Asthma and COVID-19

Elissa M. Abrams, Geert W. ‘t Jong and Connie L. Yang
CMAJ May 19, 2020 192 (20) E551; DOI: https://doi.org/10.1503/cmaj.200617
Elissa M. Abrams
Section of Allergy and Clinical Immunology, Department of Pediatrics (Abrams), University of Manitoba; Section of Pediatric Hospital Medicine and Department of Pediatrics and Child Health (‘t Jong), University of Manitoba; Children’s Health Research Institute of Manitoba (Abrams, ‘t Jong), Winnipeg, Man.; Divisions of Allergy and Immunology (Abrams) and Respiratory Medicine (Yang), Department of Pediatrics, University of British Columbia, Vancouver, BC; British Columbia Children’s Hospital Research Institute (Yang), Vancouver, BC
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Geert W. ‘t Jong
Section of Allergy and Clinical Immunology, Department of Pediatrics (Abrams), University of Manitoba; Section of Pediatric Hospital Medicine and Department of Pediatrics and Child Health (‘t Jong), University of Manitoba; Children’s Health Research Institute of Manitoba (Abrams, ‘t Jong), Winnipeg, Man.; Divisions of Allergy and Immunology (Abrams) and Respiratory Medicine (Yang), Department of Pediatrics, University of British Columbia, Vancouver, BC; British Columbia Children’s Hospital Research Institute (Yang), Vancouver, BC
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Connie L. Yang
Section of Allergy and Clinical Immunology, Department of Pediatrics (Abrams), University of Manitoba; Section of Pediatric Hospital Medicine and Department of Pediatrics and Child Health (‘t Jong), University of Manitoba; Children’s Health Research Institute of Manitoba (Abrams, ‘t Jong), Winnipeg, Man.; Divisions of Allergy and Immunology (Abrams) and Respiratory Medicine (Yang), Department of Pediatrics, University of British Columbia, Vancouver, BC; British Columbia Children’s Hospital Research Institute (Yang), Vancouver, BC
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Viruses commonly trigger asthma exacerbations

There is some evidence to date that those with asthma are overrepresented among the adult patients who have been admitted to hospital with coronavirus disease 2019 (COVID-19).1,2 This overrepresentation may occur because severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) triggers asthma exacerbations, as other viruses do, which is why asthma is listed as a risk factor for COVID-19 morbidity.1

Asthma exacerbation and COVID-19 are difficult to differentiate clinically

The most common presenting symptoms of COVID-19 — dry cough and shortness of breath — are also common with acute exacerbation of asthma.3 Fever is more commonly associated with COVID-19 but could be present with any infection-triggered exacerbation of asthma. Screening protocols for COVID-19 should be applied to anyone having worsening respiratory symptoms, including those with asthma, in view of the varied clinical presentations of COVID-19. Appropriate personal protective equipment should be used by those initiating screening.3

Good asthma control can help prevent asthma exacerbations during the COVID-19 pandemic

Current recommendations are to remain on the same asthma maintenance medications during the pandemic.1,3 Other precautions include reviewing proper inhaler technique, avoiding known asthma triggers (such as aeroallergens), physical distancing and regular hand hygiene.1,3 For patients with asthma who are taking biologic medications, current recommendations support remaining on them during this time.3

Nebulization should be avoided if possible

Nebulization is an aerosol-generating medical procedure that can increase the risk of aerosolization of SARS-CoV-2 and infection transmission. 1,3 A metered-dose inhaler with a valved holding chamber or a drypowder inhaler (turbuhaler or diskus) is strongly preferred over nebulizers, particularly in health care settings.1

Oral steroids should still be used to treat asthma exacerbations

Oral steroids are not recommended to treat lung disease associated with COVID-19 (owing to possible increased viral replication).4 However, in patients with asthma, current recommendations are to use oral steroids for moderate-to-severe asthma exacerbations that respond poorly to bronchodilators because use of these steroids hastens symptom resolution and decreases the risk of admission to hospital.1,3,5 Oral steroids often start to work within 4 hours of administration.5

CMAJ invites submissions to “Five things to know about …” Submit manuscripts online at http://mc.manuscriptcentral.com/cmaj

Footnotes

  • CMAJ Podcasts: author interview at https://soundcloud.com/cmajpodcasts/200617-five

  • Competing interests: Connie Yang was on advisory boards for Novartis and Covis Pharma. Elissa Abrams received moderator fees from Novartis. No other competing interests were declared.

  • This article has been peer reviewed.

References

  1. ↵
    1. Abrams E,
    2. ‘t Jong G,
    3. Yang C
    . Paediatric asthma and COVID-19. Ottawa: Canadian Paediatric Society; 2020 Apr. 1. Available: www.cps.ca/en/documents/position/paediatric-asthma-and-covid-19 (accessed 2020 Apr. 21).
  2. ↵
    1. Goyal P,
    2. Choi JJ,
    3. Pinheiro LC,
    4. et al
    . Clinical characteristics of COVID-19 in New York City [letter]. N Engl J Med [updated 2020 Apr. 20]. doi: 10.1056/NEJMc2010419.
    OpenUrlCrossRef
  3. ↵
    1. Shaker MS,
    2. Oppenheimer J,
    3. Grayson M,
    4. et al
    . COVID-19: pandemic contingency planning for the allergy and immunology clinic. J Allergy Clin Immunol Pract 2020 Mar 26 [Epub ahead of print]. pii: S2213-2198(20)30253-1. doi: 10.1016/j.jaip.2020.03.012.
    OpenUrlCrossRef
  4. ↵
    Interim clinical guidance for mangement of patients with confirmed coronavirus disease (COVID-19); updated 2020 Apr. 3. Atlanta: U.S. Centers for Disease Control and Prevention. Available: www.cdc.gov/coronavirus/2019-ncov/hcp/clinical-guidance-management-patients.html (accessed 2020 Apr. 21).
  5. ↵
    1. Alangari AA
    . Corticosteroids in the treatment of acute asthma. Ann Thorac Med 2014;9:187–92.
    OpenUrlCrossRefPubMed
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Canadian Medical Association Journal: 192 (20)
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19 May 2020
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Asthma and COVID-19
Elissa M. Abrams, Geert W. ‘t Jong, Connie L. Yang
CMAJ May 2020, 192 (20) E551; DOI: 10.1503/cmaj.200617

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Elissa M. Abrams, Geert W. ‘t Jong, Connie L. Yang
CMAJ May 2020, 192 (20) E551; DOI: 10.1503/cmaj.200617
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