CPAP Therapy
Continuous Positive Airway Pressure (CPAP) is the gold-standard treatment for obstructive sleep apnea, delivering steady air pressure to keep airways open during sleep.
What is CPAP Therapy?
CPAP (Continuous Positive Airway Pressure) therapy is the most widely prescribed and effective treatment for obstructive sleep apnea (OSA). It works by delivering a constant stream of pressurized air through a mask worn during sleep, preventing the airway from collapsing. CPAP therapy eliminates apneas, reduces snoring, and significantly improves sleep quality and daytime alertness when used consistently.
How It Works
A CPAP machine draws in room air, filters it, and pressurizes it to a prescribed level. This air flows through a heated tube to a mask that covers your nose, mouth, or both. The continuous positive pressure acts as a pneumatic splint, keeping your upper airway open throughout the breathing cycle, preventing the tissue collapse that causes apneas and hypopneas.
Who Is It For?
CPAP is recommended for patients diagnosed with moderate to severe obstructive sleep apnea (AHI ≥15 events/hour), and for mild OSA (AHI 5-14) when accompanied by symptoms like excessive daytime sleepiness, impaired cognition, or cardiovascular conditions. It may also be used for central sleep apnea and complex sleep apnea in some cases.
Benefits
Eliminates Breathing Interruptions
CPAP effectively eliminates apneas and hypopneas, restoring normal oxygen levels throughout the night and preventing the dangerous drops in blood oxygen that characterize untreated sleep apnea.
Reduces Daytime Sleepiness
By restoring quality sleep, CPAP significantly reduces excessive daytime sleepiness, improving alertness, concentration, and overall quality of life.
Lowers Cardiovascular Risk
Consistent CPAP use reduces blood pressure, decreases risk of heart disease, stroke, and atrial fibrillation, and improves overall cardiovascular health.
Improves Mood and Cognition
Many patients experience improvements in memory, mood, and cognitive function after starting CPAP therapy, as the brain receives adequate oxygen and restorative sleep.
Eliminates Snoring
CPAP stops snoring by keeping the airway open, which benefits both the patient and their bed partner.
Side Effects & Considerations
Most side effects are minor and can often be resolved with simple adjustments.
Mask Discomfort
Finding the right mask fit is crucial. Common issues include pressure marks, skin irritation, and air leaks. Working with your sleep specialist to try different mask styles usually resolves these issues.
Nasal Congestion or Dryness
Air pressure can cause nasal stuffiness, dryness, or nosebleeds. Using a CPAP with heated humidification and ensuring proper mask fit typically alleviates these symptoms.
Aerophagia (Swallowing Air)
Some patients swallow air, causing bloating, gas, or stomach discomfort. Pressure adjustments or using BiPAP/Auto-CPAP may help reduce this issue.
Claustrophobia
Some users feel anxious wearing a mask. Starting with a minimal nasal pillow mask and gradually increasing wear time while awake can help with adaptation.
Noise
Modern CPAP machines are very quiet, but some users or partners notice the airflow sound. Ensuring the machine is on a stable surface and checking for mask leaks can minimize noise.
Variations & Types
Fixed-Pressure CPAP
Delivers a single, constant pressure throughout the night as prescribed by your sleep physician based on your sleep study results.
Auto-Adjusting CPAP (APAP)
Automatically adjusts pressure breath-by-breath within a set range, responding to apneas, hypopneas, and snoring. May improve comfort for some users.
CPAP with Pressure Relief (EPR/C-Flex)
Reduces pressure slightly during exhalation, making breathing out feel more natural. Available on many modern CPAP devices.
Travel CPAP
Compact, lightweight devices designed for travel. FAA-approved for airline use and often battery-compatible for camping or areas without power.
Tips for Success
Start Slowly
Begin by wearing your mask while awake, then during naps, before graduating to all-night use. This gradual approach helps your brain adjust to the therapy.
Use It Every Night
Consistency is key. Using CPAP every night, even during naps, maximizes health benefits and helps your body adapt more quickly.
Keep Equipment Clean
Wash your mask cushion and humidifier chamber weekly. Replace filters monthly (or as recommended). Clean equipment works better and lasts longer.
Optimize Humidity
Use heated humidification to prevent dryness. Adjust the humidity level seasonally—higher in winter, lower in summer—for optimal comfort.
Address Mask Issues Promptly
If your mask leaks, causes pressure sores, or feels uncomfortable, contact your equipment provider. A different mask style or size often solves the problem.
Track Your Progress
Most modern CPAP machines have apps that track your usage and AHI. Reviewing this data helps you understand your therapy and motivates continued use.