Evaluation of a multicomponent grading system for obstructive sleep apnoea: the Baveno classification

Area of Science:

• Sleep Medicine
• Respiratory Medicine
• Clinical Diagnostics

Background:

• The apnoea-hypopnoea index (AHI) is questioned for classifying obstructive sleep apnoea (OSA) severity.
• A new multicomponent system, the Baveno classification, integrates symptoms and comorbidities to characterize OSA and guide therapy.

Purpose of the Study:

• To evaluate if the Baveno classification reflects the OSA population.
• To determine if the Baveno classification translates into different patient outcomes.
• To assess if adding AHI to the Baveno classification improves its utility.

Main Methods:

• Analysis of 14,499 OSA patients from the European Sleep Apnoea Database cohort.
• Stratification of patients into groups based on symptoms and comorbidities (Baveno classification).
• Evaluation of treatment outcomes (sleepiness, blood pressure) in subgroups after 24-36 months.

Main Results:

• The Baveno classification effectively stratified the OSA population by baseline parameters.
• Patients in groups B, C, and D (with severe symptoms and/or comorbidities) showed treatment improvements in sleepiness and/or blood pressure.
• Group A (minor symptoms/comorbidities) showed no treatment effect on outcomes.
• Adding AHI to the Baveno classification did not improve its predictive or guiding capabilities; it was inferior for treatment decisions.

Conclusions:

• The Baveno classification provides superior stratification of OSA patients compared to AHI alone.
• This multicomponent system offers better guidance for therapeutic decisions in obstructive sleep apnoea.
• The AHI remains essential for OSA diagnosis but is less effective for severity grading and treatment guidance than the Baveno classification.