Getting Started With CPAP: Your First 30 Nights

Why the first month matters

CPAP (continuous positive airway pressure) works by sending a steady stream of air through a mask to hold your upper airway open while you sleep. It only helps on the nights, and for the hours, that you actually wear it. The American Academy of Sleep Medicine (AASM) guideline on positive airway pressure recommends education and early troubleshooting when therapy starts, because the habits people form in the first weeks tend to stick.

If you are in the United States and have Medicare or a plan with similar rules, the first three months also count for coverage. Medicare looks for at least 4 hours of use on 70% of nights during any 30 consecutive days in your first 3 months. That is an insurance minimum, not a health target. Most sleep specialists encourage wearing CPAP whenever you sleep, all night, every night.

Before the first night: practise awake

Many people find the mask strange at first, and that is normal. Practising while you are awake lets your brain get used to the sensation without the pressure of trying to fall asleep.

• Hold the mask to your face without the headgear for a few minutes while watching TV or reading.
• Next, put on the headgear and adjust it so it is snug but not tight.
• Then connect the tubing and turn the machine on, breathing through the mask for 15 to 30 minutes while relaxing.
• If you feel short of breath or panicky, take it off, breathe normally and try again later. Short, repeated sessions work better than forcing it.

Nights 1 to 7: build the routine

Put the mask on as soon as you get into bed, not after you are already half asleep. If you wake and find you took it off, put it back on rather than leaving it until morning. Wearing it for naps helps too.

Use the comfort features your machine offers. Ramp starts you at a low pressure and builds up gradually as you fall asleep. Many machines also have a heated humidifier that reduces dryness. Your equipment supplier (often called a DME, durable medical equipment provider) or sleep clinic can show you which settings you can change and which only your clinician should change.

Keep a short note each morning: hours used, how you felt, and anything that bothered you (leaks, dry mouth, pressure, noise). Those notes make follow-up visits far more useful.

Nights 8 to 21: troubleshoot early

This is the stretch where small problems either get fixed or turn into reasons to quit. Common ones include air leaking around the mask, a dry mouth or nose, a stuffy nose, red marks on the face, feeling that the pressure is too strong, and swallowing air. Each of these has practical fixes, and we cover them in separate guides.

Do not wait for your scheduled appointment if something is making you skip nights. Call your DME about mask fit (many allow a mask exchange within a set period after setup, so ask what their policy is) and call your sleep clinician about pressure or breathing concerns. Never change your prescribed pressure on your own.

Nights 22 to 30: check your data

Most modern machines record how many hours you used them, how much air leaked and an estimate of how many breathing events still happened per hour (the residual AHI). Apps from manufacturers show a nightly summary, and your clinician can see more detail. Review a week at a time rather than reacting to one bad night.

Many people notice they feel more rested within days to weeks, while others take longer. If your usage is good but you still feel very sleepy, mention it at your follow-up. Ongoing sleepiness has many possible causes and is worth investigating.

Signs you should call your clinician sooner

Contact your sleep clinician or doctor promptly if you notice chest pain, new or worsening shortness of breath, ear or sinus pain that does not settle, nosebleeds that keep returning, significant stomach bloating every night, or if you simply cannot tolerate the mask after several honest attempts. If you ever feel severe chest pain or trouble breathing, seek emergency care.

Also tell your clinician if you are drowsy while driving. Untreated or undertreated sleep apnea raises the risk of drowsy driving, and no app score should reassure you if you are fighting to stay awake behind the wheel.