Quick Answer
Sleep apnea causes breathing pauses during sleep — leading to daytime sleepiness, cardiovascular risk and cognitive impairment. Treatment options explained.
Medically reviewed by Dr. Jitendra Prasad Yadav • NMC 8029 • Kathmandu Neurology Clinic & Cognitive Center
Sleep apnea is a common but serious sleep disorder — breathing pauses during sleep cause oxygen desaturation, sleep fragmentation and cardiovascular stress. It's associated with daytime sleepiness, hypertension, heart disease, stroke and cognitive impairment. Treatment is highly effective.
What is sleep apnea
Obstructive sleep apnea (OSA): most common — airway collapses during sleep, blocking breathing.
- Central sleep apnea: brain fails to signal breathing — less common.
- Symptoms: loud snoring, breathing pauses, gasping, daytime sleepiness.
- Prevalence: affects ~25% of men, ~10% of women — most undiagnosed.
- Severity: mild, moderate, severe — based on apnea-hypopnea index (AHI).
Health risks of untreated sleep apnea
Cardiovascular: hypertension, heart disease, stroke, arrhythmias — major risk factor.
- Metabolic: insulin resistance, diabetes, weight gain — metabolic syndrome.
- Cognitive: memory problems, concentration difficulty, dementia risk — brain effects.
- Daytime sleepiness: accidents, reduced productivity, quality of life.
- Mood: depression, anxiety — common comorbidities.
- Mortality: severe untreated apnea increases mortality risk.
Diagnosis of sleep apnea
Sleep study (polysomnography): gold standard — overnight monitoring of breathing, oxygen, brain activity.
- Home sleep apnea test: simplified version — for suspected OSA without comorbidities.
- Questionnaires: STOP-BANG, Epworth Sleepiness Scale — screening tools.
- Physical exam: neck circumference, airway assessment — risk factors.
- Blood tests: rule out other causes — thyroid, anemia.
Treatment options for sleep apnea
CPAP (continuous positive airway pressure): gold standard — prevents airway collapse, most effective.
- Oral appliances: mandibular advancement devices — for mild-moderate OSA.
- Positional therapy: side sleeping — for positional OSA.
- Weight loss: reduces severity — adjunct to other treatments.
- Surgery: uvulopalatopharyngoplasty, Inspire — for selected patients.
- Lifestyle: avoid alcohol, sedatives — worsen apnea.
When to see a sleep specialist
If you snore loudly, have breathing pauses, excessive daytime sleepiness, or risk factors (obesity, hypertension, neck circumference) — see a sleep specialist. Sleep apnea is treatable and serious.
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When to seek professional evaluation
Sleep apnea is evaluated at sleep medicine consultation — because proper diagnosis and treatment are essential.
This guide is educational and does not replace individual medical advice.
Frequently asked questions
Answers reviewed by Dr. Jitendra Prasad Yadav • MBBS, MD (Internal Medicine), FICN (Neurology), FCNV, FIHM • NMC 8029
Most adults need 7-9 hours per night. However, individual needs vary. The key indicator is daytime functioning � if you feel rested and alert during the day, your sleep duration is likely adequate.
Yes. CBT-I is the first-line treatment for chronic insomnia, with response rates of 70-80%. It produces durable improvements and is more effective than medication for long-term outcomes.
Migraine is a neurological condition; headache is one feature. Associated symptoms and functional impact are important for diagnosis.
Aura refers to visual, sensory, or speech symptoms that precede the headache in some people. Both types are migraine; the presence of aura may influence management discussion.
Yes. Short or fragmented sleep impairs memory consolidation and lowers migraine threshold. Snoring with apneas fragments sleep and fragments cognition. Dr. Jitendra screens sleep duration, regularity, snoring and caffeine, and refers for sleep study when indicated — often before escalating headache or memory medicines.
Brain health reflects how well the brain functions across thinking, memory, movement, and mood. Protect it through regular exercise, vascular risk control (blood pressure, diabetes, smoking), good sleep, hearing treatment, cognitive/social engagement, and avoiding smoking. Dr. Jitendra discusses brain health at Kathman…
More: All FAQs → · Ask Dr. Jitendra →
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References & Review
Reviewed by Dr. Jitendra Prasad Yadav • Last reviewed: 2026-11-10
- International Classification of Headache Disorders, 3rd edition (ICHD-3).
- Harrison's Principles of Internal Medicine — Neurology sections.
- American Academy of Neurology guidelines for selected conditions (where applicable).
Content is educational and aligns with standard medical references; individual evaluation may vary. External links provide context and do not imply endorsement.