Sleep Apnea Warning Signs: What a Sleep Study Can Evaluate

What sleep apnea is

Sleep apnea is a condition involving repeated pauses or reductions in breathing during sleep. A person may not notice what happens while asleep; a bed partner may report loud snoring, gasping, or breathing that starts and stops. Daytime sleepiness, fatigue, headaches, or trouble focusing can also occur, but these symptoms have many possible causes and do not diagnose sleep apnea by themselves.

What a clinician may ask

NHLBI says a health professional may ask about symptoms, risk factors, and family history. They may also ask about medicines and other health conditions. A sleep diary can help track sleep duration and daytime sleepiness, but it cannot replace a clinical evaluation. Share observations from someone who has seen your sleep if you are comfortable doing so.

How diagnosis may be assessed

A clinician may refer someone to a sleep specialist or recommend a sleep study. NHLBI explains that sleep studies can help identify the type and severity of sleep apnea. The appropriate test depends on the person's circumstances, and a consumer wearable or phone app is not a substitute for testing ordered by a clinician.

When to ask for care

Talk with a health professional if loud snoring is accompanied by gasping, witnessed pauses in breathing, or significant daytime sleepiness, especially if it affects driving or work. Do not assume a person is simply a poor sleeper or tell them to use a device without assessment. If severe sleepiness makes driving unsafe, do not drive and get help arranging a safer option.

Treatment depends on an individual's diagnosis and health. This overview does not recommend a device, medicine, or therapy. A clinician can explain options after evaluating the person.

What the journal evidence adds

The 2017 AASM diagnostic guideline states that clinical tools and questionnaires should not diagnose adult obstructive sleep apnea without appropriate testing. It places diagnostic tests within a comprehensive sleep evaluation and follow-up plan.

An app's reassuring number or a quiz score cannot replace that process. Ask the clinician which test is suitable for your symptoms and other health conditions, and what happens if a home test is incomplete or does not clarify the concern. Bring relevant observations from a bed partner if available, but do not try to interpret overnight breathing events yourself. This guide does not prescribe a device or identify an apnea severity level. Continue to raise persistent symptoms with the care team even if a consumer product reports a good night's sleep.

Sources and further reading

• Sleep Apnea: Symptoms - National Heart, Lung, and Blood Institute (NIH). patient guidance.
• Sleep Apnea: Diagnosis - National Heart, Lung, and Blood Institute (NIH). patient guidance.
• Clinical Practice Guideline for Diagnostic Testing for Adult Obstructive Sleep Apnea: An American Academy of Sleep Medicine Clinical Practice Guideline - Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine (2017). clinical diagnostic guideline.

Health disclaimer

This article is for general education only. Its information and suggestions are not medical advice, diagnosis, or treatment and may not be right for everyone. Ask a qualified health professional for advice that fits your health, medications, and needs before changing your diet, exercise, supplement use, or care.