Asthma classification: Difference between revisions
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{{Asthma}} | {{Asthma}} | ||
{{CMG}}; {{AOEIC}} {{LG}} | {{CMG}}; {{AOEIC}} {{LG}} | ||
==Overview== | ==Overview== | ||
Asthma is classified into | Asthma is classified into [[atopic]] and non-atopic types based on the onset of [[symptoms]]. Atopic refers to early-onset whereas non-atopic refers to late-onset. Despite the differentiation, a significant degree of overlap exists between the two types. The severity of symptoms is further classified based on the GINA severity grades into mild intermittent, mild persistent, moderate persistent and severe persistent asthma. | ||
== | ==Classification== | ||
===Based on Symptom Onset=== | |||
====Early-onset Asthma (Atopic, Allergic, Extrinsic)==== | |||
*Early-age of onset | |||
*[[Atopy|Atopic individuals]] have an increased predisposition | |||
*[[Asthma triggers|Environmental allergens]] play a strong role in the pathogenesis | |||
*Positive personal and/or family history of [[atopic diseases]] such as [[allergic rhinitis]], [[urticaria]] and [[eczema]] | |||
*[[Asthma laboratory tests|Laboratory tests]] may reveal increased [[Asthma laboratory tests#Serum and Sputum Examination|serum IgE levels]], positive [[Asthma laboratory tests#Allergy Testing|skin test]] to specific aero-allergens and a positive [[Asthma bronchial challenge test#Bronchoprovocation Test|bronchoprovocation test]] | |||
====Late-onset Asthma (Non-Atopic, Idiosyncratic, Intrinsic)==== | |||
*Late-age of onset | |||
*Non- atopic individuals have an increased predisposition | |||
*[[Asthma triggers|Indoor allergens]] play a strong role in the pathogenesis | |||
*Negative personal and/or family history of [[atopic diseases|allergic diseases]] | |||
*[[Asthma laboratory tests|Laboratory tests]] may reveal normal [[Asthma laboratory tests#Serum and Sputum Examination|serum IgE levels]] and a negative [[Asthma bronchial challenge test#Bronchoprovocation Test|bronchoprovocation test]] | |||
===Based on GINA Severity Grade=== | |||
Asthma is classified into four subgroups: mild intermittent, mild persistent, moderate persistent and severe persistent based on the ''Global Initiative for Asthma - GINA severity grades''.<ref name="pmid18166595">Bateman ED, Hurd SS, Barnes PJ, Bousquet J, Drazen JM, FitzGerald M et al. (2008) [http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&retmode=ref&cmd=prlinks&id=18166595 Global strategy for asthma management and prevention: GINA executive summary.] ''Eur Respir J'' 31 (1):143-78. [http://dx.doi.org/10.1183/09031936.00138707 DOI:10.1183/09031936.00138707] PMID: [http://pubmed.gov/18166595 18166595]</ref> | |||
====Mild Intermittent Asthma==== | |||
{| align="center" style="border: 0px; font-size: 90%; margin: 3px; width:70%;" | |||
|- | |- | ||
| | | style="width: 55%; background: #4479BA; text-align: center;" |{{fontcolor|#FFF|'''Symptoms per day'''}} | ||
| | | style="width: 15%; background: #4479BA; text-align: center;" |{{fontcolor|#FFF|'''Symptoms at night'''}} | ||
| | | style="width: 15%; background: #4479BA; text-align: center;" |{{fontcolor|#FFF|'''PEF or FEV1'''}} | ||
| | | style="width: 15%; background: #4479BA; text-align: center;" |{{fontcolor|#FFF|'''PEF variability'''}} | ||
|- | |- | ||
| style="text-align: | | style="background: #DCDCDC; padding: 5px; text-align: left;" | | ||
| style="text-align:center" | Less than or equal to twice a month | *Less than once a week | ||
| style="text-align:center" | ≥ 80% | *Brief exacerbations | ||
| style="text-align:center" | < 20% | *Asymptomatic and normal PEFR between exacerbations | ||
| style="background: #DCDCDC; padding: 5px; text-align: center;" | Less than or equal to twice a month | |||
| style="background: #DCDCDC; padding: 5px; text-align: center;" | ≥ 80% of predicted normal | |||
| style="background: #DCDCDC; padding: 5px; text-align: center;" | < 20% | |||
|} | |} | ||
==== | ====Mild Persistent Asthma==== | ||
{| align="center" style="border: 0px; font-size: 90%; margin: 3px; width:70%;" | |||
|- | |||
| style="width: 55%; background: #4479BA; text-align: center;" |{{fontcolor|#FFF|'''Symptoms per day'''}} | |||
| style="width: 15%; background: #4479BA; text-align: center;" |{{fontcolor|#FFF|'''Symptoms at night'''}} | |||
| style="width: 15%; background: #4479BA; text-align: center;" |{{fontcolor|#FFF|'''PEF or FEV1'''}} | |||
| style="width: 15%; background: #4479BA; text-align: center;" |{{fontcolor|#FFF|'''PEF variability'''}} | |||
|- | |||
| style="background: #DCDCDC; padding: 5px; text-align: left;" | | |||
*Symptoms more than twice a week but less than once a day | |||
*Exacerbations may affect activity and sleep. | |||
| style="background: #DCDCDC; padding: 5px; text-align: center;" | Greater than or equal to twice a month | |||
| style="background: #DCDCDC; padding: 5px; text-align: center;" | ≥ 80% | |||
| style="background: #DCDCDC; padding: 5px; text-align: center;" | 20-30% | |||
|} | |||
== | ====Moderate Persistent Asthma==== | ||
{| align="center" style="border: 0px; font-size: 90%; margin: 3px; width:70%;" | |||
|- | |||
| style="width: 55%; background: #4479BA; text-align: center;" |{{fontcolor|#FFF|'''Symptoms per day'''}} | |||
| style="width: 15%; background: #4479BA; text-align: center;" |{{fontcolor|#FFF|'''Symptoms at night'''}} | |||
| style="width: 15%; background: #4479BA; text-align: center;" |{{fontcolor|#FFF|'''PEF or FEV1'''}} | |||
| style="width: 15%; background: #4479BA; text-align: center;" |{{fontcolor|#FFF|'''PEF variability'''}} | |||
|- | |||
| style="background: #DCDCDC; padding: 5px; text-align: left;" | | |||
*Daily symptoms | |||
*Exacerbations more than twice a week | |||
*Exacerbations may affect activity and sleep | |||
*Daily use of [[Bronchodilators#Short-acting β2-agonists|bronchodilators]] | |||
| style="background: #DCDCDC; padding: 5px; text-align: center;" | More than once a month | |||
| style="background: #DCDCDC; padding: 5px; text-align: center;" | 60-80% | |||
| style="background: #DCDCDC; padding: 5px; text-align: center;" | ≥ 30% | |||
|} | |||
{| | ====Severe Persistent Asthma==== | ||
{| align="center" style="border: 0px; font-size: 90%; margin: 3px; width:70%;" | |||
|- | |- | ||
| | | style="width: 55%; background: #4479BA; text-align: center;" |{{fontcolor|#FFF|'''Symptoms per day'''}} | ||
| | | style="width: 15%; background: #4479BA; text-align: center;" |{{fontcolor|#FFF|'''Symptoms at night'''}} | ||
| | | style="width: 15%; background: #4479BA; text-align: center;" |{{fontcolor|#FFF|'''PEF or FEV1'''}} | ||
| | | style="width: 15%; background: #4479BA; text-align: center;" |{{fontcolor|#FFF|'''PEF variability'''}} | ||
|- | |- | ||
| style="text-align: | | style="background: #DCDCDC; padding: 5px; text-align: left;" | | ||
| style="text-align:center" | | *Continued symptoms | ||
| style="text-align:center" | | *Frequent exacerbations | ||
| style="text-align:center" | | *Limited physical activity | ||
| style="background: #DCDCDC; padding: 5px; text-align: center;" | Frequent | |||
| style="background: #DCDCDC; padding: 5px; text-align: center;" | ≤ 60% | |||
| style="background: #DCDCDC; padding: 5px; text-align: center;" | ≥ 30% | |||
|} | |} | ||
== | ==Guidelines for Diagnosis and Management of Asthma Based On The National Heart, Blood, and Lung Institute Expert Panel Report 3 (EPR3) <ref name="pmid18240881">Urbano FL (2008) [http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&retmode=ref&cmd=prlinks&id=18240881 Review of the NAEPP 2007 Expert Panel Report (EPR-3) on Asthma Diagnosis and Treatment Guidelines.] ''J Manag Care Pharm'' 14 (1):41-9. PMID: [http://pubmed.gov/18240881 18240881]</ref>== | ||
== | {| style="border: 0px; font-size: 90%; margin: 3px;" | ||
! rowspan="2" style="text-align: center; background: #4479BA; text-align: center; width: 12%;" | {{fontcolor|#FFF|Severity Components}} | |||
! rowspan="2" style="text-align: center; background: #4479BA; text-align: center; width: 22%;" | {{fontcolor|#FFF|Intermittent}} | |||
! colspan="3" style="text-align: center; background: #4479BA; text-align: center;" | {{fontcolor|#FFF|Persistent Asthma}} | |||
|- | |||
| style="text-align: center; background: #7d7d7d; text-align: center; width: 22%;" | {{fontcolor|#FFF|'''Mild'''}} | |||
| style="text-align: center; background: #7d7d7d; text-align: center; width: 22%;" | {{fontcolor|#FFF|'''Moderate'''}} | |||
| style="text-align: center; background: #7d7d7d; text-align: center; width: 22%;" | {{fontcolor|#FFF|'''Severe'''}} | |||
|- | |||
| style="background: #DCDCDC; padding: 5px;" |'''Symptoms''' | |||
| style="background: #F5F5F5; padding: 5px;" | | |||
* Less than 1 day/week | |||
| style="background: #F5F5F5; padding: 5px;" | | |||
* More than 2 days/week | |||
* Not daily | |||
| style="background: #F5F5F5; padding: 5px;" | | |||
* Daily | |||
| style="background: #F5F5F5; padding: 5px;" | | |||
* Daily | |||
* Throughout the day | |||
|- | |||
| style="background: #DCDCDC; padding: 5px;" |'''Nocturnal Symptoms''' | |||
| style="background: #F5F5F5; padding: 5px;" | | |||
* Less than 2 times/month | |||
| style="background: #F5F5F5; padding: 5px;" | | |||
* 3 to 4 times/month | |||
| style="background: #F5F5F5; padding: 5px;" | | |||
* More than 1 time/week | |||
* Not every night | |||
| style="background: #F5F5F5; padding: 5px;" | | |||
* Every night | |||
|- | |||
| style="background: #DCDCDC; padding: 5px;" |'''Interference w/ Activity''' | |||
| style="background: #F5F5F5; padding: 5px;" | | |||
* Minimal to none | |||
| style="background: #F5F5F5; padding: 5px;" | | |||
* Minor limitation of activity | |||
| style="background: #F5F5F5; padding: 5px;" | | |||
* Some limitation of activity | |||
| style="background: #F5F5F5; padding: 5px;" | | |||
* Severe limitation of activity | |||
|- | |||
| style="background: #DCDCDC; padding: 5px;" |'''Short-Acting Beta-Agonist Use''' | |||
| style="background: #F5F5F5; padding: 5px;" | | |||
* Less than 2 days/week | |||
| style="background: #F5F5F5; padding: 5px;" | | |||
* More than 2 days/week but not daily | |||
* Not more than once/day | |||
| style="background: #F5F5F5; padding: 5px;" | | |||
* Daily | |||
| style="background: #F5F5F5; padding: 5px;" | | |||
* Several times/day | |||
|- | |- | ||
| | | style="background: #DCDCDC; padding: 5px;" |'''Pulmonary Function Test''' | ||
| | | style="background: #F5F5F5; padding: 5px;" | | ||
| | * Normal FEV<sub>1</sub> between exacerbations | ||
| | * FEV<sub>1</sub> > 80% predicted | ||
* FEV<sub>1</sub>/FVC normal | |||
| style="background: #F5F5F5; padding: 5px;" | | |||
* FEV<sub>1</sub> > 80% predicted | |||
* FEV<sub>1</sub>/FVC normal | |||
| style="background: #F5F5F5; padding: 5px;" | | |||
* FEV<sub>1</sub> > 60% but < 80% predicted | |||
* FEV<sub>1</sub>/FVC reduced by 5% | |||
| style="background: #F5F5F5; padding: 5px;" | | |||
* FEV<sub>1</sub> < 60% predicted | |||
* FEV<sub>1</sub>/FVC reduced by > 5% | |||
|- | |- | ||
| style=" | | style="background: #DCDCDC; padding: 5px;" |'''Recommended Treatment Strategy''' | ||
| style=" | | style="background: #F5F5F5; padding: 5px; vertical-align:top;" |'''STEP 1''' | ||
| style=" | * ''Preferred:'' Short-acting beta-agonist PRN | ||
| style=" | | style="background: #F5F5F5; padding: 5px; vertical-align:top;" |'''STEP 2''' | ||
* ''Preferred:'' Low-dose inhaled corticosteroids | |||
* ''Alternative:'' Cromolyn, Leukotriene receptor antagonist, Nedocromil, or Theophylline | |||
| style="background: #F5F5F5; padding: 5px; vertical-align:top;" |'''STEP 3''' | |||
* ''Preferred:'' '''Either''' low-dose inhaled corticosteroids + long-acting beta-agonist '''OR''' Medium-dose inhaled corticosteroid | |||
* ''Alternative:'' Low-dose inhaled corticosteroid + either Leukotriene receptor antagonist, Theophylline, or Zileuton | |||
* | | style="background: #F5F5F5; padding: 5px;" |'''STEP 4''' | ||
* ''Preferred:'' Medium-dose inhaled corticosteroid + long-acting beta-agonist | |||
* ''Alternative:'' Medium-dose inhaled corticosteroids + either Leukotriene receptor antagonist, Theophylline, or Zileuton | |||
'''STEP 5''' | |||
* ''Preferred:'' High-dose inhaled corticosteroids + long-acting beta-agonist | |||
* Consider adding Omalizumab for patients with allergies | |||
'''STEP 6''' | |||
* ''Preferred:'' High-dose inhaled corticosteroids + long-acting beta-agonist + oral corticosteroids | |||
* Consider adding Omalizumab for patients with allergies | |||
|- | |- | ||
| | | colspan="5" style="text-align: center; background: #4479BA; padding: 5px;" | {{fontcolor|#FFF|'''Step down if possible and asthma is controlled for at least 3 months'''}} [[File:Dualarrow.png|200px]] {{fontcolor|#FFF|'''Step-up if needed, but first check adherence, environmental control, and comorbidities'''}} | ||
| | |||
| | |||
|- | |- | ||
| style=" | | colspan="5" style="background: #F5F5F5; padding: 5px;" | | ||
| | * In each step, patient education, environmental control, and management of comorbidities are important. | ||
| | * In STEP 2 - 4, consider subcutaneous allergen immunotherapy for patients with allergic asthma | ||
|- | |||
| colspan="5" style="background: #F5F5F5; padding: 5px;" | | |||
* Short-acting beta-agonist as needed for symptoms. Up to 3 treatments at 20 minute intervals as needed. | |||
* A short course of oral systemic corticosteroids may be needed. Use of a short-acting beta agonist for >2 days a week for symptom control indicates inadequate control and the need to step up therapy. | |||
|} | |} | ||
==References== | ==References== | ||
{{reflist|2}} | {{reflist|2}} | ||
{{WH}} | |||
{{WS}} | |||
[[Category:Pulmonology]] | [[Category:Pulmonology]] | ||
[[Category:Immunology]] | |||
[[Category:Emergency medicine]] | [[Category:Emergency medicine]] | ||
[[Category: | [[Category:Mature chapter]] | ||
Latest revision as of 20:30, 29 July 2020
Asthma Microchapters |
Diagnosis |
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Other Diagnostic Studies |
Treatment |
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Asthma classification On the Web |
American Roentgen Ray Society Images of Asthma classification |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-In-Chief: Lakshmi Gopalakrishnan, M.B.B.S. [2]
Overview
Asthma is classified into atopic and non-atopic types based on the onset of symptoms. Atopic refers to early-onset whereas non-atopic refers to late-onset. Despite the differentiation, a significant degree of overlap exists between the two types. The severity of symptoms is further classified based on the GINA severity grades into mild intermittent, mild persistent, moderate persistent and severe persistent asthma.
Classification
Based on Symptom Onset
Early-onset Asthma (Atopic, Allergic, Extrinsic)
- Early-age of onset
- Atopic individuals have an increased predisposition
- Environmental allergens play a strong role in the pathogenesis
- Positive personal and/or family history of atopic diseases such as allergic rhinitis, urticaria and eczema
- Laboratory tests may reveal increased serum IgE levels, positive skin test to specific aero-allergens and a positive bronchoprovocation test
Late-onset Asthma (Non-Atopic, Idiosyncratic, Intrinsic)
- Late-age of onset
- Non- atopic individuals have an increased predisposition
- Indoor allergens play a strong role in the pathogenesis
- Negative personal and/or family history of allergic diseases
- Laboratory tests may reveal normal serum IgE levels and a negative bronchoprovocation test
Based on GINA Severity Grade
Asthma is classified into four subgroups: mild intermittent, mild persistent, moderate persistent and severe persistent based on the Global Initiative for Asthma - GINA severity grades.[1]
Mild Intermittent Asthma
Symptoms per day | Symptoms at night | PEF or FEV1 | PEF variability |
|
Less than or equal to twice a month | ≥ 80% of predicted normal | < 20% |
Mild Persistent Asthma
Symptoms per day | Symptoms at night | PEF or FEV1 | PEF variability |
|
Greater than or equal to twice a month | ≥ 80% | 20-30% |
Moderate Persistent Asthma
Symptoms per day | Symptoms at night | PEF or FEV1 | PEF variability |
|
More than once a month | 60-80% | ≥ 30% |
Severe Persistent Asthma
Symptoms per day | Symptoms at night | PEF or FEV1 | PEF variability |
|
Frequent | ≤ 60% | ≥ 30% |
Guidelines for Diagnosis and Management of Asthma Based On The National Heart, Blood, and Lung Institute Expert Panel Report 3 (EPR3) [2]
References
- ↑ Bateman ED, Hurd SS, Barnes PJ, Bousquet J, Drazen JM, FitzGerald M et al. (2008) Global strategy for asthma management and prevention: GINA executive summary. Eur Respir J 31 (1):143-78. DOI:10.1183/09031936.00138707 PMID: 18166595
- ↑ Urbano FL (2008) Review of the NAEPP 2007 Expert Panel Report (EPR-3) on Asthma Diagnosis and Treatment Guidelines. J Manag Care Pharm 14 (1):41-9. PMID: 18240881