Comparing CPAP masks during initial titration for Obstructive Sleep Apnea Syndrome: one-year experience

Area of Science:

• Sleep Medicine
• Respiratory Therapy
• Medical Device Evaluation

Background:

• Continuous Positive Airway Pressure (CPAP) is the primary treatment for Obstructive Sleep Apnea (OSA).
• Various mask interfaces (oronasal, nasal, pillow) are utilized in CPAP therapy, potentially influencing treatment efficacy.
• Understanding the impact of different mask types on polysomnography outcomes during titration is crucial for optimizing patient care.

Purpose of the Study:

• To compare polysomnography outcomes during CPAP titration across different mask types: oronasal, nasal, and pillow.
• To assess the influence of mask interface on positive airway pressure (PAP) titration effectiveness in OSA patients.

Main Methods:

• Retrospective analysis of 497 CPAP titration polysomnography studies conducted over one year.
• Data collected included anthropometric measurements, baseline apnea severity (apnea-hypopnea index), and polysomnography outcomes.
• Patients were categorized based on the mask type used: oronasal (3.6%), nasal (82.3%), and pillow (14.1%).

Main Results:

• No significant differences in body mass index or baseline apnea-hypopnea index were observed among mask groups.
• Patients using oronasal masks exhibited higher titrated CPAP pressures (mean 11.6 cm H2O), increased residual apnea-hypopnea index (10.4 events/h), reduced sleep efficiency, and longer wake times after sleep onset compared to nasal and pillow mask users.
• Baseline apnea-hypopnea index correlated with higher CPAP pressure across all groups, while body mass index and residual AHI were associated with higher CPAP pressure only in the nasal and pillow groups.

Conclusions:

• The choice of CPAP mask interface significantly impacts PAP titration effectiveness and polysomnography outcomes.
• Oronasal masks are associated with less favorable outcomes, including higher CPAP requirements and poorer sleep quality metrics.
• Oronasal masks are not recommended as a first-line choice for patients undergoing CPAP therapy for sleep apnea.