How to Restart CPAP Therapy in September After Letting It Slide All Summer
Restarting CPAP therapy after a summer lapse works best as a dated four-week September plan
The evidence says coming back is harder than starting the first time, so here is the week-by-week plan that gets you past night three.
Restarting CPAP therapy is harder than starting it the first time
Restarting CPAP therapy after a summer off succeeds less often than starting it for the first time. A 2020 study in Respiratory Care from the Helsinki University Hospital sleep unit followed both groups. Only 52% of patients who re-initiated therapy were still using it after at least one year, against 67% of first-time users (P = .001).
That gap matters, because almost every guide online is written for first-timers, and that advice already failed you once. You still need the habits that keep people on therapy long term, but a September restart needs extra steps a beginner guide never mentions.
That analysis drew 224 re-initiating and 228 first-time patients from 6,231 people referred to one sleep unit. The same 2020 paper notes that about one third of patients fail their first CPAP trial. Re-initiating women stopped therapy significantly more often than men (P = .002), a difference absent among first-timers (P = .12).
Those last two figures come from a 2019 analysis in Sleep Medicine covering 2,621,182 people on positive airway pressure. Within the first 90 days, 74.6% met the standard of at least four hours a night on 70% of nights. Median time to get there was 23 days. Your adjustment window is three to four weeks, not one bad Monday.
- One-year retention after re-initiation was 52%, versus 67% for first-timers (Respiratory Care, 2020).
- Roughly one third fail their first CPAP trial, so a lapse is common, not disqualifying.
- Plan a three-to-four week ramp, based on a median 23 days to compliance (Sleep Medicine, 2019).
What a summer without therapy did to your body
Obstructive sleep apnoea returns within days of stopping CPAP, and circulatory changes follow within two weeks. A 2011 randomised controlled trial in the American Journal of Respiratory and Critical Care Medicine, by Kohler and colleagues, compared two weeks of CPAP withdrawal against continued therapy in 41 patients with sleep apnoea.
Morning systolic blood pressure rose by 8.5 mmHg (95% CI +1.7 to +15.3, P = 0.016) and diastolic by 6.9 mmHg (95% CI +1.9 to +11.9, P = 0.008). Morning heart rate rose by 6.3 bpm (P = 0.035). Endothelial function, meaning how well the artery lining widens, fell by 3.2% against the group that stayed on CPAP (P < 0.001).
In that trial, apnoea came back within a few days of stopping, and subjective sleepiness returned within two weeks. Untreated obstructive sleep apnoea–hypopnoea syndrome (OSAHS) is also linked to higher long-term cardiovascular risk.
Has your apnoea got worse? Possibly. Weight gain, more alcohol and later bedtimes all tend to raise the pressure your airway needs. Two short self-checks give you a baseline tonight: the Epworth Sleepiness Scale (ESS) and the STOP-Bang questionnaire. Write both scores down and date them.
- Two weeks off therapy raised morning systolic pressure by 8.5 mmHg in a randomised trial (Kohler et al., 2011).
- Sleep apnoea recurred within days in that trial, so a pause is never neutral.
Service the machine before restarting CPAP therapy
A bad first night back is usually equipment, not intolerance. Your device has sat unplugged since June, and several parts degrade quietly in a cupboard. Deal with them the day before night one.
1Replace the mask cushion
Silicone stiffens and keeps the shape it was squashed into. A hardened cushion leaks, and mask leak tempts you to tighten the straps, which deforms the seal further. Fit a fresh cushion, then loosen the headgear.
2Change the filter
A summer of dust sits in the intake filter. It is the cheapest part on the machine.
3Descale the humidification chamber
Water standing since June leaves limescale and biofilm behind. Empty it, clean it and dry it in open air. Here is how to spot and prevent mould in a heated humidifier before it reaches your airway.
4Wash and dry the tubing
A hose stored damp is a problem you can smell. Wash it in warm soapy water, hang it to dry completely, and replace it if it looks cloudy or cracked.
5Plug it in a night early
Check the date and time, and check that the machine reconnects for remote monitoring. If your therapy is followed by télésuivi, nightly data transmission must work before your first recorded night.
- Cushion, filter, chamber and hose all degrade during an unused summer.
- Mask leak is a seal problem, not a strap-tension problem.
Your old pressure may not fit the body you came back with
The titration pressure programmed for you years ago describes the airway you had then. Pressure is measured in centimetres of water (cmH2O), and the amount you need shifts with weight, alcohol, nasal congestion and age.
An auto-titrating device (APAP) can re-find your pressure by itself over roughly a week, inside the range your clinician set. A fixed-pressure machine cannot, so only your provider can change it. Pressure needs drift over time, which is not a willpower problem.
Ask for a CPAP re-titration or a repeat sleep test if your weight has changed by roughly 10% or more, if symptoms are back despite good usage, or if the residual apnoea–hypopnoea index (AHI) stays high after two weeks. Residual AHI is the number of breathing events per hour your machine records while you wear it.
Retesting may mean a home sleep apnoea test, called polygraphie ventilatoire in France, or a full night of polysomnography in a laboratory. Ask your sleep service what residual AHI figure they want to see from your machine, and whether your oxygen desaturation index (ODI) was measured too.
- An auto-titrating machine re-finds your pressure in about a week; a fixed-pressure one cannot.
- Trigger a re-titration on roughly 10% weight change, returning symptoms, or a high residual AHI.
A four-week September calendar for restarting CPAP therapy
Restarting CPAP therapy works best as a dated four-week ramp, not one heroic night. The schedule below is shaped by the median 23 days to compliance in the 2019 Sleep Medicine analysis. Agree it with your provider, then put the checkpoints in your phone.
| Stage | Target on the mask | What to check | If it slips |
|---|---|---|---|
| Nights 1–2 | 30–60 minutes awake in the mask, then sleep in it if you can | Comfort only, no numbers yet | Take it off, breathe, put it back on |
| Nights 3–7 | Four hours every night, ramp feature on | Usage hours only | Two poor nights running triggers the contingency below |
| Week 2 | Four to six hours, mask on from lights out | Usage plus mask leak | High leak means a new cushion or mask style, never tighter straps |
| Week 3 | Six hours or more on most nights | Residual AHI and leak together | High residual AHI means booking a re-titration |
| Week 4, day 28 | Whole night, every night | Four hours on 70% of nights, leak in range, residual AHI settled | Below target means calling the clinic this week |
Day 28 decides whether this restart holds. Four hours a night on 70% of nights is the benchmark used in the 2019 Sleep Medicine analysis, and in France the equivalent figure is written into reimbursement as at least 112 hours over a four-week period (e-santé.fr, 2026).
- Use the ramp feature from night three so pressure builds while you fall asleep.
- Judge the restart on day 28, not on night three.
Why autumn congestion can derail a September restart
September stacks three nasal problems on top of each other. Indoor heating restarts and dries the air, homes close up so dust-mite and mould exposure climbs, and allergic rhinitis season overlaps. Each is associated with swelling of the turbinates, the ridged tissue lining the inside of the nose.
Swollen turbinates raise nasal resistance, meaning how hard air works to get through. The same pressure then feels harsher, you drift into mouth breathing, and leak follows. A deviated septum, the bent wall of cartilage between the nostrils, can make the effect bigger.
Four moves help. Raise the heated humidifier one step at a time rather than jumping to maximum. Rinse with saline before bed. Ask your doctor about treating allergic rhinitis before you restart. Wash bedding hot and weekly to cut the dust-mite load.
Mask choice matters too. Nasal pillows sit at the nostrils and suit an open nose, while a full face mask keeps therapy running on a blocked-nose night. Switching mid-restart is a tactic, not a defeat.
- Heating, dust mites and rhinitis all make an autumn restart harder than a summer one.
- Congestion raises nasal resistance, which reads as intolerable pressure and mouth leak.
What a lapse does to your reimbursement in Europe
In France, a summer without therapy is not only a health event, it is a payment-tier event. Reimbursement of PPC, pression positive continue, is graded on observance measured by télésuivi, the machine's automatic nightly data transmission. In French the search phrase is reprendre la PPC après arrêt; in German, CPAP wieder anfangen nach Pause.
Under the 2026 LPPR and Assurance Maladie rules (e-santé.fr, 2026), observance means four hours a night on average, expressed as a minimum of 112 hours per month. Below roughly 56 hours a month, the weekly forfait falls to about €3.65, against over €14 for compliant use. Chronic use under two hours a night can trigger equipment withdrawal.
Two details matter specifically for a restart. Failure of automatic data transmission is itself grounds to interrupt reimbursement, so a machine unplugged since June may already have flagged with your provider. An adaptation forfait of about €15.96 a week also applies for the first 13 weeks at initiation, so ask whether a re-initiation re-opens that tolerance window (e-santé.fr, 2026).
| Country | Who you contact first | What the lapse changes |
|---|---|---|
| France | Your prestataire de santé à domicile, then your médecin traitant | Observance tiers and a transmission gap. From year two, renewal can come from the GP using the provider's télésuivi report. |
| Germany | Hausarzt for the referral, then the Homecare-Anbieter under a Versorgungsvereinbarung with your Krankenkasse | CPAP is a Hilfsmittel under § 33 SGB V. A refused Kostenübernahme can be appealed by Widerspruch. |
| United Kingdom | The NHS sleep service that holds your record | Care follows NICE guideline NG202. There is no supplier to buy from and no insurance replacement cycle. |
Say the words that log this as a re-initiation
Guidance written for the United States tells you to phone a durable medical equipment (DME) provider. In Europe that company does not exist. Say plainly that you stopped over the summer and want to re-initiate therapy, give the real reason, and ask for it to be recorded as a re-initiation rather than a therapy failure.
Then ask one concrete question: what usage figure do you need from me by day 28?
- France grades reimbursement on measured observance, with 112 hours a month as the pivot (e-santé.fr, 2026).
- A machine that stopped transmitting can flag before you have decided to restart.
- Ask for the episode to be logged as a re-initiation, and get a numeric day-28 target.
Decide now what happens when night three goes badly
You already know what the discomfort feels like, so telling yourself to give it time will not hold. Write the escalation plan down before night one, while motivation is high.
1Leak, red marks or air in your eyes
Change cushion size or mask style. Do not tighten the headgear; over-tightening is a common cause of a bad seal.
2Panic or claustrophobia
Use mask desensitisation. Hold the mask to your face while awake, wear it unconnected for twenty minutes in front of the television, then connected. Build up over three evenings.
3Dry mouth or sore throat
Raise humidification by one step and reassess after two nights. If air escapes through your mouth, ask about a chinstrap or a full face mask.
4Bloating and belching
This is aerophagia, meaning swallowed air. Report it rather than tolerating it. Expiratory pressure relief (EPR) settings and a pressure review are the usual fixes.
5Cannot fall asleep in it
Switch the ramp feature on so pressure starts low and climbs slowly. Still awake after thirty minutes? Take the mask off, reset for ten minutes, put it back on.
- Pre-commit to a fix for each failure mode before it happens.
- Most restart problems are mask fit, humidity or pressure relief.
- Two bad nights is a phone call, not a verdict.
Stop the next lapse before next summer
Most lapses begin in a predictable place. A holiday, a heatwave, a shared room, a night when the machine felt impractical, and one week becomes a season. Solve that scenario now.
For away-from-home nights, some people plan a fallback rather than a blank. Back2Sleep is a CE-certified Class I soft silicone nasal stent that keeps the nasal airway open during sleep, with no electricity, tubing or noise, no prescription, and a starter kit of four sizes shipped across Europe. It is bought out of pocket, it is intended for snoring and mild-to-moderate obstructive sleep apnoea, and it does not replace CPAP for severe disease. If you were originally diagnosed with simple snoring or mild apnoea and were always marginal on CPAP, that is a fair conversation to open with your sleep physician.
For everyone else, the withdrawal data settles it. Blood pressure and endothelial function moved within a fortnight in the 2011 Kohler trial, so the task after a lapse is re-initiation, not swapping treatments. If CPAP genuinely cannot work for you, the recognised routes are a mandibular advancement device, called an orthèse d'avancée mandibulaire in France, positional therapy, or hypoglossal nerve stimulation (HGNS), now an established NHS pathway for moderate-to-severe apnoea.
Finally, rebuild the routine around the therapy. September hands you a natural anchor: fixed lights-out, an alcohol curfew, a cool dark room. Sleep hygiene is no substitute for treatment, but it makes month one far less miserable.
- Name the situation that ended your last run, and plan for it before it recurs.
- For moderate-to-severe apnoea, the answer to a lapse is re-initiation, not a different device.
What Back2Sleep Users Say
Frequently Asked Questions
Can I just start using my CPAP again after months without it?
Usually yes. Service the machine first: new mask cushion, new filter, a cleaned and dried water chamber. Then tell your provider or sleep service that you are re-initiating therapy, and ask what needs renewing. Ramp back over three to four weeks, since median time to reach four hours nightly was 23 days (Sleep Medicine, 2019).
Do I need a new sleep study to restart CPAP?
Not always. Requirements vary by country and by clinic, so ask the sleep service that holds your record. A repeat test is more clearly justified if your weight changed by roughly 10% or more, if symptoms returned, or if your machine shows a high residual apnoea-hypopnoea index. In France a home test is called polygraphie ventilatoire.
Is my old CPAP pressure still correct after a long break?
Maybe not. Required pressure shifts with weight, alcohol, nasal congestion and age, so a setting chosen years ago may no longer fit. An auto-titrating machine can re-find your pressure within about a week. A fixed-pressure device cannot, so ask your provider about a formal re-titration if symptoms persist.
How long does it take to get used to CPAP again the second time?
Plan three to four weeks. A 2019 Sleep Medicine analysis of 2,621,182 users found a median 23 days to reach four hours a night on 70% of nights. Restarting is harder than starting, since one-year retention was 52% after re-initiation versus 67% for first-timers (Respiratory Care, 2020).
Do I lose my reimbursement if I stop using my CPAP for a few weeks?
In France, reimbursement is graded on observance measured by télésuivi, not switched off instantly. Rules reported for 2026 require at least 112 hours a month, and below roughly 56 hours the weekly forfait drops to about €3.65 against over €14. Contact your prestataire de santé à domicile before restarting (e-santé.fr, 2026).
Is it safe to use a CPAP mask and hose that have been sitting unused all summer?
Not without checking. Silicone cushions harden and leak, filters clog with dust, humidifier chambers grow limescale and biofilm, and a hose stored damp can develop mould. Replace the cushion and filter, clean and fully dry the chamber and tubing, then run the machine awake for ten minutes before bedtime.
What happens to your body when you stop using CPAP?
Apnoea returns within days. In a 2011 randomised trial published in the American Journal of Respiratory and Critical Care Medicine, two weeks of withdrawal raised morning systolic blood pressure by 8.5 mmHg and heart rate by 6.3 bpm, while endothelial function fell 3.2%. Daytime sleepiness returned within the same fortnight.
Has my sleep apnoea got worse while I wasn't using the machine?
Possibly. Apnoea returns within days of stopping, and weight gain, alcohol and nasal congestion all tend to raise the pressure your airway needs. Score the Epworth Sleepiness Scale and STOP-Bang questionnaire, note your machine's residual AHI once you restart, and ask your sleep service whether a repeat test is warranted.
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