- Significant work of breathing, accessory muscle use, and nasal flaring
- Respiratory rate: significantly increased for age
- Wheeze: absent, severe inspiratory and/or expiratory
- Aeration: decreased throughout lung fields
- Prolonged expiration
- Cough: weak or absent
- Management of FiO2 and SpO2
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- Moderate work of breathing, accessory muscle use, and nasal flaring
- Respiratory rate: moderately increased for age
- Wheeze: moderate persistent expiratory
- No prolonged expiration
- Cough: loose and productive
- Management of FiO2 and SpO2
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- Mild/minimal work of breathing
- Respiratory rate: normal for age
- Wheeze: intermittent expiratory to none
- No prolonged expiration
- Cough: full, loose and productive
- FIO2 21%
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