When assessing a child for asthma control, which peak flow reading suggests the child is in the yellow zone?

The yellow zone in asthma management indicates that the child is experiencing some level of respiratory distress or an increased risk of an asthma exacerbation. Peak flow readings in this zone suggest that there is a need for intervention, such as medication adjustments or additional monitoring.

In this context, a peak flow reading between 180-220 L/min represents a state where the child's airway might be partially obstructed and asthma symptoms could be worsening. This is the range that typically necessitates the use of rescue medications and close observation to prevent further decline in lung function.

The other ranges provided do not fall within the yellow zone. Readings above 220 L/min are generally considered to be in the green zone, indicating good asthma control. A reading below 135 L/min would typically place the child in the red zone, reflecting severe airway obstruction and an urgent need for medical intervention. Lastly, a reading above 270 L/min suggests excellent control and a strong lung function, indicating that the child's asthma is well-managed. Thus, recognizing the appropriate peak flow reading for each color zone is crucial for effective asthma management.