Heart attack and stroke in connection with sleep apnea
Sleep apnea drastically increases the risk of heart attack and stroke.
Nighttime breathing pauses in sleep apnea are directly linked to severe cardiovascular diseases such as heart attack and stroke. Because of the repeated pauses in breathing, the body enters a stress state every night, one that places a lasting strain on the cardiovascular system and significantly raises the risk of acute as well as chronic heart disease. If additional risk factors such as smoking, diabetes, excess weight, or lack of exercise are present, this danger increases substantially. If sleep apnea remains untreated, it can cause lasting damage to the heart, making early diagnosis, targeted therapy, and consistent medical prevention all the more important.
How to recognize sleep apnea and when the risk of a sleep-apnea-related heart attack or stroke is particularly high is explained on this page.
Sleep apnea as a risk factor
“Sleep apnea is an often underestimated risk factor for heart attack and stroke. Repeated nighttime drops in oxygen and spikes in blood pressure place the heart and blood vessels under constant stress. If the condition is detected and treated early, the risk of serious cardiovascular events can be significantly reduced.”
PD Dr. Dr. med. Martin Lanzer
What you should know about sleep apnea and stroke
How can heart attack and stroke be influenced by sleep apnea?
Sleep apnea negatively affects the cardiovascular system on multiple levels and can therefore promote heart attacks and strokes. The repeated breathing stoppages caused by sleep apnea activate stress hormones, raise blood pressure, and lead to oxygen deficiency. At the same time, inflammatory processes in the blood vessels are promoted, accelerating arteriosclerotic changes. These factors encourage both impaired blood flow to the heart muscle and vascular blockages in the brain.
What are the causes of a heart attack or a stroke?
The most common causes of heart attack include high blood pressure, smoking, lipid metabolism disorders, diabetes, excess weight, and lack of exercise. Chronic stress and sleep disorders also play a role.
How does a stroke occur?
A stroke occurs due to a sudden disruption of blood flow in the brain. In most cases, a blood vessel supplying the brain is narrowed or completely blocked by a blood clot or arteriosclerotic deposits. As a result, the affected area of the brain is no longer supplied with enough oxygen, so nerve cells are damaged or die within a short time. Less commonly, a stroke is caused by a blood vessel rupturing in the brain, leading to cerebral hemorrhage. In both cases, it is a medical emergency in which every minute counts.
What are the symptoms of a stroke?
Typical stroke symptoms include sudden paralysis or sensory disturbances, usually on one side, speech or comprehension difficulties, a drooping corner of the mouth, and visual disturbances. Dizziness, severe headaches, or unsteadiness when walking can also be warning signs. If such symptoms appear suddenly, medical help must be sought immediately.
How does a heart attack occur?
A heart attack usually occurs due to an acute blockage of a coronary artery. The cause is typically arteriosclerotic deposits that build up over years in the vessel walls and can eventually tear open. A blood clot forms at that site and blocks blood flow to the heart muscle.
What are the symptoms of a heart attack?
Typical heart attack symptoms are severe, persistent chest pain that often radiates into the arm, shoulder, back, or jaw. Other signs can include shortness of breath, nausea, cold sweats, dizziness, and a feeling of tightness in the chest.
What is meant by a myocardial infarction?
A myocardial infarction is one of the most common and dangerous cardiovascular diseases, also known as a heart muscle infarction. It occurs when blood flow in a coronary artery is suddenly blocked. As a result, heart muscle tissue is no longer supplied with enough oxygen from the blood and begins to die.
Sleep apnea and heart attack correlate
Current studies show that about nine percent of men and four percent of women have obstructive sleep apnea. During sleep, repeated breathing stoppages occur due to a blockage of the upper airways. Each of these pauses triggers a stress response in the body: hormones such as adrenaline and cortisol are released, pulse and blood pressure rise abruptly, while oxygen supply decreases at the same time.
This places a tremendous burden on the heart. It has to work harder even though it is being supplied with less oxygen. Over the long term, this can lead to cardiac arrhythmias, weakening of the heart muscle, and circulatory disorders.
Not surprising: many heart patients also suffer from sleep apnea. If the condition remains untreated, the risk of an acute heart attack increases significantly. That makes medical evaluation especially sensible if sleep apnea is suspected.
Preventing heart attack and stroke associated with sleep apnea
The good news: heart attacks and strokes that arise in connection with sleep apnea can often be prevented, provided sleep apnea is detected early. The foundation is reliable diagnosis in a sleep laboratory. Using modern equipment, brain waves, breathing, oxygen supply, heartbeat, and movements during sleep can be recorded and evaluated afterwards.
Depending on the findings, different forms of therapy may be considered, including breathing therapies, special dental splints, or surgical procedures to permanently widen the airways.
By eliminating the cause, nighttime blood pressure surges and the associated stress reactions often normalize. The heart and blood vessels are relieved. Sleep becomes more restorative, the risk of serious disease is reduced, quality of life improves noticeably, and the risk of further life-threatening events is sustainably lowered.