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Table 2 Correlation between asthma types and respiratory system function

From: Management of asthma patients during the COVID-19 pandemic: pathophysiological considerations to address the challenges

Types

Respiratory rate (based on age)

Lung function

Symptom frequency

Severity

Night time awakening

Pulse rate

References

Mild intermittent

No change or slightly increased

Almost normal

May happen 2 days a week

Does not affect regular activities

2 or fewer times each month

< 100

[25,26,27]

Mild persistent

Increased

80% of normal or greater

More than twice a week

Minor impact on regular activities

3 or 4 times

100–120

 

Moderate persistent

Increased often > 30

Between 60–80%

On a daily basis

Limits daily activities somewhat

More often than once a week

> 120

 

Severe persistent

Normal or decreased

Less than 60%

Symptoms will arise throughout the day

Significantly limits daily activities

Every night

Bradycardia

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