What color-coded zone indicates the safety level on a peak flowmeter?

The green zone on a peak flowmeter indicates the safety level, meaning the individual's asthma or respiratory status is stable and well-controlled. In this zone, the peak expiratory flow (PEF) readings are typically at or above 80% of the person's personal best flow rate. This suggests that the lungs are functioning well, and it's a sign that the individual is not experiencing significant asthma symptoms and should adhere to their regular medication regimen.

Understanding the color-coded zones on a peak flowmeter is crucial for effective self-management of respiratory conditions, as it helps patients quickly assess their lung function and take appropriate actions based on their readings. The green zone indicates that the patient requires no additional intervention and can continue with their usual activities without any immediate concern.