CPAP vs surgery: which sleep apnoea treatment is right for me?
For those newly diagnosed with obstructive sleep apnoea, one of the most common questions is whether treatment will involve a CPAP machine, surgery, or something else entirely. The honest answer is that it depends — not on a single factor, but on the interplay of severity, anatomy, lifestyle and personal preference. This article sets out the key considerations to help you understand the landscape before your consultation.
Understanding the options
The treatment of obstructive sleep apnoea has advanced considerably in recent years, and most patients now have access to a range of effective options. These broadly fall into three categories: device-based therapies, surgical interventions, and lifestyle modification. In practice, the best outcomes often involve a combination of approaches.
CPAP: the established standard
CPAP — continuous positive airway pressure — remains the most widely prescribed treatment for moderate to severe OSA worldwide. The device delivers a carefully calibrated flow of pressurised air through a mask worn during sleep, preventing the airway from collapsing. For those who use it consistently, the results are often transformative: daytime sleepiness resolves, sleep quality improves markedly, and the cardiovascular risks associated with untreated apnoea are significantly reduced.
The principal challenge with CPAP is adherence. Some patients find the mask uncomfortable, particularly in the early weeks, and the presence of the device can feel intrusive. However, modern CPAP machines are considerably smaller, quieter and more sophisticated than their predecessors, and with appropriate support — including mask fitting, pressure optimisation and follow-up — most patients who persevere with the initial adjustment period find that CPAP becomes simply part of their nightly routine.
CPAP is a treatment rather than a cure. It controls the condition while in use but does not address the underlying anatomy. This is an important distinction: stopping CPAP typically means the apnoeas return.
Mandibular advancement devices
For patients with mild to moderate OSA, or those who cannot tolerate CPAP, a mandibular advancement device (MAD) offers a well-evidenced alternative. These custom-fitted dental appliances hold the lower jaw in a slightly forward position during sleep, preventing the tongue and soft tissues from falling back to obstruct the airway.
MADs are less effective than CPAP in severe disease, but they are compact, quiet and require no power source — making them particularly popular with those who travel frequently. They are most suitable for patients whose OSA is positional or anatomically driven, and who are willing to have them fitted and adjusted by a dental specialist.
When is surgery appropriate?
Surgery for sleep apnoea is not a universal solution, but for the right patient it can offer long-lasting benefit — and in some cases, effectively cure the condition.
The key to successful surgical treatment lies in accurate identification of the site or sites of obstruction. This is precisely where drug-induced sleep endoscopy (DISE) is invaluable. By administering mild sedation to reproduce the sleep state and using a fine endoscope to observe the airway directly, it is possible to determine whether collapse is occurring at the level of the nose, the soft palate, the tongue base or elsewhere — and to plan surgical intervention accordingly.
Common surgical approaches include:
Nasal surgery — correcting a deviated septum, reducing enlarged turbinates or addressing nasal polyps to improve nasal airflow. This does not directly treat OSA at the throat level, but improving nasal breathing improves CPAP tolerance and can reduce the severity of apnoea in some patients.
Palatal surgery — procedures to tighten or reposition the soft palate and reduce its tendency to collapse. These include minimally invasive techniques performed under local anaesthetic, through to more involved surgical reconstruction under general anaesthetic, depending on the degree and pattern of palatal collapse.
Tongue base procedures — addressing collapse at the level of the tongue base using techniques including coblation-assisted reduction or more complex surgical repositioning, typically guided by DISE findings.
Multilevel surgery — where obstruction occurs at more than one site, a staged or combined surgical approach may be recommended.
Surgery is generally most effective in patients with specific, identifiable anatomical contributors to their apnoea, without severe obesity, and where non-surgical treatments have either failed or are not tolerated.
Lifestyle measures: underestimated and underused
It would be a disservice to patients to discuss CPAP and surgery without acknowledging the significant impact that lifestyle changes can have. Weight loss is the single most effective lifestyle intervention for OSA: even a modest reduction in body weight can substantially reduce apnoea severity and, in some cases, resolve the condition entirely. Reducing alcohol intake — which relaxes the muscles of the throat — improving sleep position, and treating nasal congestion are all interventions that should be considered alongside, or before, more invasive treatment.
How is the decision made?
There is no formula that determines the right treatment for an individual patient. The decision is a collaborative one, informed by the results of sleep studies and DISE, the patient's anatomy, their lifestyle, their tolerance for various interventions, and their goals.
At Hillser Clinic, our approach is always to complete a thorough assessment before recommending any treatment. We see our role not as advocates for a particular therapy, but as guides who help each patient understand their condition clearly and make an informed choice about how they wish to address it.