Obstructive Sleep Apnea: Symptoms, Diagnosis, Treatment & Surgery Risk
Published June 29, 2026 · By Dr. Robert J. Troell, Board-Certified Facial Plastic Surgeon
Dr. Robert J. Troell, MD, FACS
Obstructive sleep apnea (OSA) is far more than loud snoring. It's a common, serious medical condition — a blocked or restricted upper airway during sleep that, left untreated, raises your risk of high blood pressure, heart attack, and stroke. Dr. Robert J. Troell evaluates and treats OSA in Las Vegas and the surrounding communities of Centennial Hills, North Las Vegas, Henderson, and Pahrump — from every angle: structural, functional, and surgical.
If you've ever had to breathe through your mouth just to get enough air at night, you already know how disruptive a restricted airway can be. But OSA isn't only a social annoyance — it has real medical, emotional, and cognitive consequences. Large population studies have found it to be remarkably common: roughly a quarter of men and about one in nine women, with the rate in women climbing toward a quarter after menopause as protective progesterone declines.
How Obstructive Sleep Apnea Affects Every Surgery
This is a point most patients — and even many clinicians — overlook, and it can be dangerous. Undiagnosed OSA makes general anesthesia riskier. A patient with a difficult airway can be hard for the anesthesiologist to intubate; if you are paralyzed for the procedure and the breathing tube cannot be passed, the situation becomes life-threatening.
OSA also makes your body more sensitive to sedatives and narcotic pain medications, which relax the airway and can cause it to collapse — worsening snoring at best, or obstructing your breathing at home after surgery at worst. It's one important reason many patients and surgeons prefer to avoid general anesthesia when a procedure can safely be done another way. For suitable cosmetic procedures, that's exactly what an awake approach with local anesthesia and IV sedation offers.
Common Symptoms of Obstructive Sleep Apnea
These can occur alone or together as part of obstructive sleep apnea syndrome (OSAS):
- Restless sleep — the most common sign; more than 95% of patients move around the bed throughout the night
- Loud snoring — over 90% snore before each obstruction
- Excessive daytime sleepiness and low energy
- Morning and daytime headaches
- Memory loss, brain fog, and reduced cognitive function
- Insomnia — trouble falling asleep or staying asleep
- Depression and anxiety
- High blood pressure — about 35% of patients with hypertension have OSAS
- Cardiac arrhythmias and, over time, heart failure (about half of heart-failure patients have underlying OSAS)
- Increased risk of heart attack and stroke
Children can have sleep apnea without the adult pattern — they may do poorly in school, struggle to pay attention, or appear to have attention-deficit symptoms. In many children, enlarged tonsils and adenoids are the sole cause and are cured by removing them.
From Snoring to Severe Sleep Apnea
Upper-airway obstruction exists along a continuum. A diagnostic sleep study is required to confirm OSA and grade its severity using the apnea–hypopnea index (AHI) — the number of partial (hypopnea) plus complete (apnea) obstructions per hour of sleep.
| Stage | What it means |
|---|---|
| Primary snoring | Social snoring without significant obstruction |
| Upper Airway Resistance Syndrome (UARS) | Frequent sleep arousals and daytime sleepiness; AHI under 5, without oxygen dropping below 90% |
| Mild OSAS | AHI 5–20 per hour |
| Moderate OSAS | AHI 20–40 per hour |
| Severe OSAS | AHI greater than 40 per hour |
How Obstructive Sleep Apnea Is Diagnosed
The first step is recognizing the symptoms. Several risk factors raise the likelihood of OSAS:
- Excess weight — about 70% of OSA patients are over their ideal body weight, and roughly 80% of bariatric (weight-loss) surgery patients have OSA. Encouragingly, successful weight-loss surgery cures sleep apnea in about 80% of them.
- A small or recessed lower jaw (mandible) — pushes the tongue base back, narrowing the airway
- Asian facial structure — a more recessed upper and lower jaw can increase palate and tongue collapse even in thin patients
- Large tonsils and adenoids — the sole cause in more than 80% of children, cured by removing them
When OSA is suspected, a diagnostic sleep study is performed. An accredited sleep center is more accurate, while home sleep studies can screen for OSA, are often approved by insurance more quickly, and are more available — though their biggest limitation is no brain-wave monitoring to confirm you actually slept.
If You're Diagnosed, What Are the Options?
Dr. Troell always recommends a trial of medical options first — especially positive airway pressure. Treatment falls into a few categories:
- Positive airway pressure (PAP, CPAP, Auto-PAP, BiPAP) — gently blows air to stent the airway open so oxygen reaches the lungs
- Oral appliance — a dental device worn during sleep that holds the lower jaw and tongue forward
- Weight loss — because 70% of patients are overweight, reaching ideal body weight (alongside PAP or an appliance) can be very effective and, in some, curative
- Surgery — appropriate when medical management hasn't worked or isn't tolerated; far better than leaving OSA untreated
Positive airway pressure is also valuable immediately after airway surgery, preventing collapse while the airway is swollen and pain medication is in use.
The Sites of Airway Obstruction
Choosing the right treatment depends on where your airway collapses. A detailed head-and-neck exam — including a flexible scope of the upper airway (nasopharyngoscopy), often with a maneuver that simulates the negative pressure of sleep (the "Mueller maneuver") — pinpoints the anatomical sites. CT or MRI is rarely needed. The main sites are:
- Nose — nasal obstruction alone can cause mild OSA and worsen snoring
- Soft palate & tonsils
- Base of the tongue
- Lateral pharyngeal (throat) walls
In Dr. Troell's experience, most patients (over 80%) obstruct at more than one site — commonly the tongue base (over 60%) combined with the soft palate (about 40–50%). That's why a careful, individualized exam matters before any surgical plan.
Surgical Treatment Options and What to Expect
When medical therapy hasn't succeeded, surgery is directed at the specific sites and severity of obstruction, balanced against your preferences. More severe disease is harder to treat and more often needs procedures at multiple sites. After any sleep-apnea surgery, it's essential to follow your symptoms, use a PAP device when possible, and — most importantly — repeat a diagnostic sleep study to confirm success.
Recovery depends on the procedure. A few patients with mild OSA can be treated as outpatients (commonly nasal surgery, or palate surgery with or without tonsillectomy). Those with more severe disease are typically monitored overnight with pulse oximetry; the most extensive procedure — maxillomandibular advancement, which moves the upper and lower jaw forward — often involves one to two nights of monitored care. Tonsil and palate surgery is among the more painful head-and-neck procedures (often 6–10 on a 0–10 scale, with ear-referred pain, for 7–14 days), and most patients miss one to two weeks of work or school. Throughout recovery, the priority is keeping the airway safe while swelling resolves.
Don't Ignore the Signs
Obstructive sleep apnea is common and serious. If a partner or physician notices symptoms consistent with OSAS, the right step is a sleep study. If it confirms sleep apnea, medical or surgical therapy is indicated — because living untreated raises your risk of the OSAS symptom syndrome and, ultimately, of heart attack or stroke. Whether the answer is a device, weight loss, or surgical correction, the goal is the same: to help you breathe freely again.
A Surgeon Who Treats the Airway From Every Angle
Dr. Troell was the first surgeon in the United States to be board-certified in sleep medicine, and he completed a fellowship and served as a faculty member at Stanford University's Sleep Disorders Clinic. His combined background in sleep medicine, otolaryngology–head & neck surgery (ENT), and facial plastic and reconstructive surgery means he can evaluate and treat your upper airway structurally, functionally, and aesthetically — all in one place, here in Las Vegas.
Obstructive Sleep Apnea: Common Questions
Is loud snoring the same as sleep apnea?
No. Most people with OSA snore, but snoring alone can be "primary" (social) snoring without significant obstruction. Sleep apnea means the airway repeatedly narrows or closes during sleep. Only a diagnostic sleep study can tell the difference and grade the severity.
Why does sleep apnea matter if I'm having surgery?
Undiagnosed OSA can make general anesthesia more dangerous — the airway can be harder to intubate, and sedatives and narcotics relax the airway and can cause it to collapse during recovery. It's one reason many patients prefer an awake, local-plus-sedation approach when a procedure can safely be done that way.
Do I have to use CPAP, or are there alternatives?
Positive airway pressure (CPAP) is usually tried first and is very effective when used consistently. Alternatives and additions include an oral appliance, weight loss, and — when medical options haven't worked or aren't tolerated — surgery directed at the specific sites of obstruction.
Can sleep apnea be cured?
Sometimes. In children, removing enlarged tonsils and adenoids cures most cases. In adults who are overweight, reaching ideal body weight can be curative in many. For others, treatment controls the condition rather than curing it — which is why follow-up and a repeat sleep study after treatment are important.
How is sleep apnea diagnosed?
With a diagnostic sleep study, either at an accredited sleep center (more accurate) or at home (faster to approve and more available, but without brain-wave monitoring). A head-and-neck exam, including a scope of the upper airway, identifies where the obstruction occurs.
Dr. Troell's Sleep-Surgery Research
Dr. Troell has co-authored peer-reviewed research on the surgical management of obstructive sleep apnea, including:
- Terris DJ, Clerk AA, Norbash A, Troell RJ. Characterization of postoperative edema following laser-assisted uvulopalatoplasty. Laryngoscope. 1996;106(2):124–128.
- Powell N, Riley R, Guilleminault C, Troell R. A reversible uvulopalatal flap for snoring and sleep apnea syndrome. Sleep. 1996;19(7):593–599.
- Riley RW, Powell NB, Guilleminault C, Pelayo R, Troell RJ, Li KK. Obstructive sleep apnea surgery: risk management and complications. Otolaryngol Head Neck Surg. 1997;117:648–652.
- Powell NB, Riley RW, Guilleminault C, Blumen M, Troell RJ. Radiofrequency volumetric reduction of the tongue: a porcine study. Chest. 1997;111:1348–1355.
- Troell RJ, Riley RW, Powell NB, Li KK. Long-term results of surgical management of sleep-disordered breathing. Otolaryngol Clin North Am. 1998;31(6):1031–1035.
- Li KK, Troell R, Riley R, Powell N, Koester U, Guilleminault C. Uvulopalatopharyngoplasty, maxillomandibular advancement, and the velopharynx. Laryngoscope. 2001;111:1075–1078.
Patient education. This article explains obstructive sleep apnea for a general audience. It is for educational purposes only and is not medical advice, a diagnosis, or a substitute for an in-person evaluation. Individual results vary — always consult a qualified physician about your specific symptoms, history, and options before any medical or surgical decision.
- Reviewed by: Robert J. Troell, MD, FACS — the first U.S. surgeon board-certified in sleep medicine
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