Sleep Apnea Treatment Options: From Diagnosis to CPAP and Beyond

The main sleep apnea treatment options are positive airway pressure therapy (CPAP, auto CPAP or BiPAP), custom oral appliances that move the lower jaw forward, weight loss and lifestyle changes, positional therapy, and surgery for selected cases. For moderate to severe obstructive sleep apnea, CPAP or auto CPAP is the first-line treatment. The right choice depends on the type and severity of apnea, symptoms, anatomy and patient preference, and it starts with a sleep study and a physician's diagnosis. Every PAP machine is a prescription device, and the clinician sets the therapy pressure.

Sleep apnea is common and often missed. A 2019 analysis estimated that 936 million adults aged 30 to 69 worldwide have mild to severe obstructive sleep apnea, and 425 million have moderate to severe disease. This guide covers symptoms, causes, types, diagnosis and every major treatment option, with a Latin American perspective on access.

What is sleep apnea?

An apnea is a pause in breathing that lasts at least 10 seconds. A hypopnea is a partial reduction in airflow that lowers blood oxygen or causes a brief arousal. Each event fragments sleep, even though the person rarely remembers it.

A sleep study counts events per hour of sleep. That number, the apnea-hypopnea index (AHI), grades severity in adults:

AHI is not the only factor. Specialists read it alongside symptoms, overnight oxygen levels and other medical conditions.

Sleep apnea symptoms

Many people find out because a bed partner notices loud snoring or pauses. Common symptoms include:

• Loud, habitual snoring, often with silences followed by a snort or gasp.
• Breathing pauses witnessed by someone else.
• Waking up choking or gasping.
• Getting up several times at night to urinate.
• Excessive daytime sleepiness, such as dozing off while reading, watching TV or driving.
• Morning headaches and dry mouth.
• Poor concentration, memory lapses, irritability or low mood.

Women may report less typical symptoms such as insomnia, fatigue or headaches. In children, sleep apnea can show up as snoring, mouth breathing, restless sleep and behavior or school problems. Snoring alone does not always mean sleep apnea, but snoring with pauses or daytime sleepiness deserves a medical evaluation.

Causes and risk factors

In obstructive sleep apnea, the throat muscles relax during sleep and the tongue, soft palate or tonsils block airflow. The body responds with a breathing effort and a brief arousal that reopens the airway, a cycle that can repeat hundreds of times a night.

• Excess weight, especially around the neck.
• Age and sex: risk rises with age, is higher in men and increases in women after menopause.
• Airway anatomy: large tonsils, a small or recessed jaw, a deviated septum or chronic nasal congestion.
• Alcohol, sedatives and smoking.
• Family history of sleep apnea.
• Related conditions such as high blood pressure, type 2 diabetes or heart failure.

Central sleep apnea has different triggers, including heart failure, stroke, opioid use and sleeping at high altitude.

Types of sleep apnea

Obstructive sleep apnea is by far the most common type. For bilevel therapy, read what a BiPAP machine is and who it is for.

Why treating sleep apnea matters

Each pause lowers oxygen levels and triggers a stress response that raises blood pressure and heart rate. Over years, untreated sleep apnea is associated with high blood pressure (including hard-to-control hypertension), atrial fibrillation and other arrhythmias, heart attack and heart failure, stroke, type 2 diabetes, and drowsy driving and workplace accidents. It also affects mood, memory and quality of life.

Effective treatment improves sleepiness and quality of life. The American Academy of Sleep Medicine (AASM) recommends positive airway pressure for adults with obstructive sleep apnea and excessive sleepiness, and suggests it for those with comorbid hypertension.

Diagnosis comes before treatment

Evaluation starts with a sleep history, questions for the bed partner, a sleepiness scale such as the Epworth scale and an exam of the neck, nose and throat. The AASM recommends against diagnosing sleep apnea with questionnaires alone, without a sleep test.

In-lab polysomnography

The patient spends a night in a sleep lab with a technologist. The study records brain waves, eye and muscle movements, airflow, breathing effort, oxygen, heart rhythm and body position. It is the reference standard, and the AASM prefers it over home testing for people with significant heart or lung disease, respiratory muscle weakness, hypoventilation, chronic opioid use, a history of stroke or severe insomnia, and when a home test is negative or inconclusive.

Home sleep apnea testing (Type III)

A portable recorder is worn in the patient's own bed and measures at least airflow, breathing effort and oximetry. The AASM accepts it for uncomplicated adults with signs of moderate to severe obstructive sleep apnea when a technically adequate device is used. Home testing shortens waiting lists and lowers cost, which matters in Latin American regions with few sleep labs.

One example of this device class is the iApneaMate S3, an AASM Type III recorder that captures nasal airflow, thoracic effort, SpO₂, pulse rate, body position and snoring. As with any test, ordering and interpreting it is the physician's role.

Sleep apnea treatment options in detail

Positive airway pressure: CPAP, APAP and BiPAP

PAP therapy is the first-line treatment for moderate to severe obstructive sleep apnea. The machine sends pressurized air through a hose and mask, which splints the throat open. It works while it is used: it does not remove the cause, but it prevents the pauses. Learn more in what a CPAP machine is and how it works.

• CPAP: one fixed pressure all night.
• APAP (auto CPAP): adjusts pressure between a prescribed minimum and maximum. Devices such as the iBreeze CPAP/APAP run both modes from 4 to 20 cmH₂O.
• BiPAP (bilevel): one pressure to inhale and a lower one to exhale, for specific cases such as central apnea, COPD overlap or hypoventilation. The iBreeze BPAP is one example.

The AASM recommends starting therapy with either home APAP or in-lab titration in adults without significant comorbidities, and suggests CPAP or APAP over BiPAP for routine treatment. The physician prescribes the device type and pressure. Compare the three modes in CPAP vs BiPAP vs APAP, browse our CPAP, APAP and BiPAP machine buying guide, or check how much a CPAP machine costs in Latin America.

Oral appliances

Custom mandibular advancement devices hold the lower jaw forward during sleep to widen the airway. The AASM recommends them for adults with obstructive sleep apnea who cannot tolerate CPAP or prefer an alternative, and advises a custom, titratable device fitted by a qualified dentist, followed by a sleep test to confirm the result.

Weight loss and lifestyle changes

For people with excess weight, losing weight can reduce apnea severity. Avoiding alcohol and sedatives near bedtime, quitting smoking and keeping regular sleep hours also help. In December 2024, the US FDA approved the first medication for moderate to severe obstructive sleep apnea in adults with obesity, tirzepatide, used with diet and exercise. Approval and availability vary by country, and it requires a prescription.

Positional therapy

Some people have apneas mainly when sleeping on their back, which a sleep study can show. Their physician may suggest a device or pillow that keeps them on their side.

Surgery and implants

Options for selected patients include tonsil removal (especially in children), nasal surgery, palate surgery, maxillomandibular advancement and hypoglossal nerve stimulation with an implanted device. These require evaluation by an ENT or maxillofacial surgeon.

Adherence decides whether CPAP works

CPAP only protects the nights it is used. A widely used benchmark, the US Medicare definition, is at least 4 hours a night on 70 % of nights during 30 consecutive days in the first three months. Reaching it is hard: in a public hospital in Buenos Aires, objective adherence, measured from the device memory card or telemonitoring, was 40 %, and only 46 % of patients attended first-year follow-up visits.

• Right mask: correct type and size reduce leaks and discomfort. See CPAP masks and interfaces and the guide to the best CPAP mask for side sleepers.
• Humidification: a heated humidifier eases nasal and throat dryness.
• Ramp: pressure starts low and rises as the patient falls asleep.
• Early follow-up: the AASM recommends education at the start of therapy and suggests troubleshooting and telemonitoring support in the first weeks.
• Usage data: hours of use, leaks and residual AHI help care teams catch problems early. See how connected CPAP and oxygen concentrators work.

Patients should never change pressure settings on their own; adjustments are made by the treating clinician.

When to see a doctor

See a physician if you snore loudly and someone has noticed pauses in your breathing, if you fall asleep unintentionally during the day or while driving, or if your blood pressure is hard to control. A sleep specialist, pulmonologist, neurologist or ENT can order the right test.

Diagnosis and therapy for clinics, homecare providers and distributors

SysMed USA supplies Latin American providers wholesale across the whole patient pathway: the iApneaMate S3 home sleep test recorder for diagnosis, iBreeze CPAP/APAP and iBreeze BPAP devices with remote monitoring connectivity, and masks such as the iRiFiT N300. We support hospitals, clinics, homecare providers and distributors with sanitary registration documentation for each country. Request a wholesale quote.