Many people think of Obstructive Sleep Apnea (OSA) as a condition that causes loud snoring and daytime fatigue. However, an important question often goes unasked:
Can untreated sleep apnea damage your heart and cardiovascular system?
According to the American Heart Association and numerous published studies, the answer appears to be yes.
Medical researchers have found that untreated Obstructive Sleep Apnea is associated with an increased risk of high blood pressure, coronary artery disease, atrial fibrillation, heart failure, stroke, and increased cardiovascular mortality.
What Happens During Sleep Apnea?
Obstructive Sleep Apnea occurs when the airway repeatedly collapses during sleep, causing breathing interruptions that may occur dozens or even hundreds of times per night.
Each time breathing stops, oxygen levels may fall and the body responds by activating stress hormones and briefly awakening the sleeper to restore normal breathing.
Although most patients do not remember these awakenings, the cardiovascular system experiences repeated stress throughout the night.
Researchers believe these cycles of oxygen deprivation, sleep fragmentation, and nervous system activation contribute to long-term cardiovascular disease.
Sleep Apnea and High Blood Pressure
One of the strongest associations identified in medical literature is between sleep apnea and hypertension.
Research suggests that individuals with OSA have approximately twice the risk of developing high blood pressure compared with individuals without sleep apnea.
Among patients with resistant hypertension, studies have found that sleep apnea is extremely common, leading many experts to recommend screening for OSA when blood pressure remains difficult to control.
Sleep Apnea and Heart Disease
Several studies have demonstrated that untreated sleep apnea is associated with an increased risk of coronary artery disease and cardiovascular events.
Researchers believe repeated oxygen deprivation may promote inflammation, damage blood vessel lining, and contribute to plaque formation and instability within the arteries that supply blood to the heart.
These changes may increase the likelihood of heart attacks and other serious cardiovascular complications over time.
Sleep Apnea and Irregular Heart Rhythms
Sleep apnea has also been linked to abnormal heart rhythms, particularly atrial fibrillation.
The repeated stress placed on the heart during apnea events may contribute to electrical instability within the heart, increasing the risk of rhythm disturbances.
For this reason, many cardiologists now recommend evaluating patients with recurrent atrial fibrillation for underlying sleep apnea.
Sleep Apnea and Stroke
The relationship between sleep apnea and stroke is particularly concerning.
Research has shown that moderate to severe sleep apnea significantly increases stroke risk. Patients who have already experienced a stroke are also more likely to have sleep apnea, and untreated OSA may contribute to poorer recovery and a higher risk of future stroke.
How Is Sleep Apnea Treated?
Fortunately, effective treatment options are available.
CPAP Therapy
Continuous Positive Airway Pressure (CPAP) remains one of the most commonly prescribed treatments for Obstructive Sleep Apnea.
CPAP works by delivering a gentle stream of air through a mask, helping keep the airway open during sleep.
For many patients, CPAP can improve sleep quality, reduce daytime fatigue, lower blood pressure, and decrease the frequency of apnea events.
Oral Appliance Therapy
CPAP is not the only treatment option.
For appropriate patients, Oral Appliance Therapy may provide an effective alternative.
An oral appliance is a custom-fitted dental device worn during sleep that helps maintain an open airway by gently repositioning the lower jaw and supporting the soft tissues of the throat.
Many patients prefer oral appliance therapy because it is:
* Small and portable
* Quiet
* Comfortable for travel
* Easy to use
* Does not require electricity
* Often easier to tolerate than CPAP
The American Academy of Sleep Medicine and the American Academy of Dental Sleep Medicine recognize Oral Appliance Therapy as an evidence-based treatment option for appropriate patients with Obstructive Sleep Apnea.
At DPC Medical and DPC Dental, we work with patients to determine whether Oral Appliance Therapy may be an appropriate option based on their sleep study results, symptoms, medical history, and treatment goals.
Other Treatment Options
Depending on the individual patient, treatment may also include:
* Weight management
* Positional therapy
* Lifestyle modifications
* Sleep specialist consultation
* Combination treatment approaches
The Bottom Line
The medical literature increasingly supports what sleep specialists have suspected for years: Obstructive Sleep Apnea is more than a sleep disorder.
Untreated sleep apnea may contribute to high blood pressure, heart disease, atrial fibrillation, heart failure, stroke, and other serious cardiovascular conditions.
The good news is that effective treatment options exist.
Whether treatment involves CPAP therapy, Oral Appliance Therapy, or another individualized approach, identifying and treating sleep apnea may improve both sleep quality and long-term health.
Schedule a Confidential Evaluation
If you experience loud snoring, daytime fatigue, brain fog, morning headaches, witnessed breathing pauses during sleep, or unexplained high blood pressure, DPC Medical offers confidential telehealth sleep evaluations for Minnesota patients.
For appropriate patients, treatment options may include Home Sleep Testing, CPAP therapy, and Oral Appliance Therapy through DPC Dental.
Call 763-588-7099 to schedule your confidential evaluation today.
Frequently Asked Questions About Sleep Apnea and Heart Disease
Can untreated sleep apnea cause high blood pressure?
Research suggests that Obstructive Sleep Apnea is associated with an increased risk of developing hypertension. Repeated episodes of oxygen deprivation and activation of the body’s stress response may contribute to elevated blood pressure over time.
Can sleep apnea increase the risk of a heart attack?
Several studies have found an association between untreated sleep apnea and coronary artery disease. Researchers believe that inflammation, oxidative stress, and vascular dysfunction may contribute to increased cardiovascular risk.
Can sleep apnea cause atrial fibrillation?
Sleep apnea has been linked to atrial fibrillation and other cardiac arrhythmias. Many cardiologists recommend evaluating patients with recurrent atrial fibrillation for underlying sleep apnea.
Can treating sleep apnea lower blood pressure?
Studies have shown that treatment of sleep apnea, including CPAP therapy, may help reduce blood pressure in some patients, particularly those with resistant hypertension.
Is CPAP the only treatment for sleep apnea?
No. While CPAP remains a common and effective treatment, some patients may qualify for Oral Appliance Therapy. Oral appliances are custom-fitted dental devices that help maintain an open airway during sleep and may be appropriate for certain individuals with Obstructive Sleep Apnea.
Can a dentist help treat sleep apnea?
Yes. Dentists trained in Dental Sleep Medicine can provide Oral Appliance Therapy for appropriate patients. At DPC Medical and DPC Dental, treatment recommendations are based on sleep study results, symptoms, medical history, and individual treatment goals.
How do I know if I have sleep apnea?
Common symptoms include loud snoring, daytime fatigue, morning headaches, brain fog, poor concentration, witnessed pauses in breathing during sleep, and waking up gasping for air. A sleep evaluation and sleep study can help determine whether sleep apnea is present.
References
Yeghiazarians Y, et al. Obstructive Sleep Apnea and Cardiovascular Disease: A Scientific Statement From the American Heart Association. Circulation. 2021.
Redline S, Azarbarzin A, Peker Y. Obstructive Sleep Apnoea Heterogeneity and Cardiovascular Disease. Nature Reviews Cardiology. 2023.
Javaheri S, et al. Interactions of Obstructive Sleep Apnea With the Pathophysiology of Cardiovascular Disease. Journal of the American College of Cardiology. 2024.
Veasey SC, Rosen IM. Obstructive Sleep Apnea in Adults. New England Journal of Medicine. 2019.
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