CPAP titration is the process of choosing pressure settings that treat obstructive sleep apnea while remaining tolerable. It follows a diagnosis; trying an auto-adjusting machine is not a substitute for an appropriate sleep assessment and diagnostic test.
A prescription is based on the whole picture: breathing events, oxygen levels when measured, leak, comfort, symptoms and the conditions being treated. A single maximum or 95th-percentile pressure is not enough to determine it.
Titration in a sleep laboratory
During an attended study, a technologist adjusts treatment under an agreed clinical protocol while monitoring sleep and breathing. The team can see whether problems occur in particular positions or sleep stages, assess the interface and recognise patterns that need a different approach.
The report describes how well treatment worked under the conditions actually observed. If the night contains little sleep, excessive leak or limited relevant sleep stages, the clinician decides whether the result is sufficient or further assessment is needed.
Starting with APAP at home
For appropriate adults with established obstructive sleep apnea and no significant complicating conditions, the AASM supports starting PAP with either home APAP or laboratory titration. Home setup still requires mask fitting, education, a prescribed pressure range and review of treatment data.
APAP changes pressure within its limits. Its download can help the team refine treatment or choose a fixed pressure. That does not make a broad factory range suitable for everyone, nor does it create a formula such as taking a percentile and adding or subtracting a fixed number.
People with suspected hypoventilation, significant central events or complex cardiopulmonary disease need a more individual assessment. A routine home APAP pathway may not address their problem.
What to expect after setup
Before leaving, know the mode, prescribed settings, mask model and whom to contact if treatment is uncomfortable. Ask when the first data review will occur and how the report will reach the clinic.
Record practical difficulties: whether discomfort starts immediately or later, whether the mask leaks, and whether you remove it during sleep. This is more useful than describing pressure as simply too high or too low.
An effective prescription may need review if symptoms return, weight or health changes substantially, or the device data become unexplained. Routine repeat sleep studies are not necessary for every stable person doing well on treatment. Do not change prescribed pressure or mode from a report statistic alone.
Related reading: What is APAP, and how does it differ from fixed CPAP?