Understanding CPAP Pressure Settings – Finding the Right Level for You

Understanding CPAP Pressure Settings – Finding the Right Level for You

Starting CPAP therapy can feel overwhelming, especially when it comes to understanding pressure settings. Many patients wonder whether their machine is set correctly, or what it means if their therapy feels uncomfortable. Getting the pressure right is essential for effective treatment and long-term comfort.

What Are CPAP Pressure Settings?

CPAP machines deliver air at a prescribed pressure to keep your airway open during sleep. The pressure is measured in centimetres of water (cmH₂O). A sleep study or titration test usually determines the right setting for you.

  • Fixed CPAP: Delivers one consistent pressure throughout the night.

  • APAP (Automatic CPAP): Adjusts pressure automatically within a prescribed range, depending on your breathing patterns.

  • BiPAP (BiLevel PAP): Provides two levels of pressure — a higher pressure when inhaling and a lower one when exhaling.

Why Getting the Right Pressure Matters

  • Too low: Your airway may still collapse, leaving sleep apnoea untreated.

  • Too high: You may experience discomfort, bloating, or difficulty exhaling.

  • Just right: Therapy feels natural, keeps your airway open, and improves sleep quality.

Adjusting and Monitoring Your Pressure

Your pressure should only be changed under medical guidance. However, if you feel discomfort, it’s important to:

  • Report issues to your sleep clinic or doctor.

  • Keep track of how you feel with compliance data from your machine.

  • Ensure your mask fits well, as leaks can mimic “pressure problems.”

Conclusion

Finding the right CPAP pressure is a balance between medical prescription and personal comfort. By working closely with your healthcare provider and using modern devices like APAP machines, you can achieve effective, comfortable therapy that truly improves your quality of life.

Back to blog