Therapeutic Strategies:
Continuous Positive Airway Pressure - CPAP

The Apnoea-Hypopnea Index (AHI) is a measure used to evaluate the severity of sleep apnoea in a patient. It represents the average number of apnoeas (complete cessations of breathing) and hypopneas (partial reductions in airflow) that occur per hour of sleep. The AHI is calculated by dividing the total number of apneas and hypopneas by the total sleep time in hours.

The AHI is used to classify the severity of sleep apnea as follows:

• Normal: AHI < 5 events per hour
• Mild sleep apnoea: AHI ≥ 5 but < 15 events per hour
• Moderate sleep apnoea: AHI ≥ 15 but < 30 events per hour
• Severe sleep apnoea: AHI ≥ 30 events per hour

A higher AHI indicates more severe sleep apnoea, and it helps clinicians determine the appropriate treatment for the patient.