OSA severity classification by AHI (apnea-hypopnea index): which AHI range defines MODERATE OSA in adults, and what is the current first-line treatment?

• A AHI 5–15/hr = moderate; first-line = uvulopalatopharyngoplasty (UPPP)
• B AHI >30/hr = moderate; first-line = mandibular advancement device
• C AHI 5–10/hr = moderate; first-line = positional therapy only
• D AHI 15–30/hr = moderate; first-line = continuous positive airway pressure (CPAP) ✓

Explanation

Adult OSA severity by AHI: mild = 5–15/hr, moderate = 15–30/hr, severe = >30/hr. CPAP is the first-line treatment for moderate-to-severe OSA regardless of BMI or anatomical factors. Mandibular advancement devices (MAD) are an alternative for mild-moderate OSA in patients intolerant of CPAP. UPPP is reserved for select patients with CPAP failure and specific anatomical obstruction. Positional therapy (avoiding supine sleep) is an adjunct for positional OSA.

Reference: Dhingra Diseases of Ear, Nose and Throat, 7th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.