what does it mean when your heart rate is high while sleeping?
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While having a slight fluctuation in heart rate during sleep is normal, it is important to understand the causes of more noticeable spikes in your heart's number of beats per minute. A common cause of a rising heart rate during sleep is a lack of oxygen, which is often brought on by obstructive sleep apnea.
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Your heart is continuously beating to keep blood circulating throughout your body. Its rate changes depending on your activity level; it is lower while you are asleep and at rest and higher while you exercise—to supply your muscles with enough freshly oxygenated blood to keep the functioning at a high level.
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If you have bradycardia, you'll have a sustained heart rate below 60 even when you're awake and active. A normal range is from 60 to 100 beats-per-minute while awake. The heart rate can also slow down normally while we are asleep to 40 to 60 beats a minute.
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In addition, sudden drops in blood oxygen levels that occur during central sleep apnea may adversely affect heart health. If there's underlying heart disease, these repeated multiple episodes of low blood oxygen (hypoxia or hypoxemia) worsen prognosis and increase the risk of abnormal heart rhythms.
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REM is the stage of sleep when you have most of your dreams. It is only about 20% of your total sleep time. Your blood pressure and heart rate can go up and down during this stage.
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Just like breathing, your heart rate and blood pressure are different during sleep. And they change depending on what phase of sleep you're in. Heart rate and blood pressure go down and are steadier during non-REM sleep. During REM sleep, they rise and are more varied, similar to daytime patterns.
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During non-REM sleep, your heart rate, breathing and blood pressure all drop to levels below those that occur while you are awake. REM is the stage of sleep when you have most of your dreams. It is only about 20% of your total sleep time. Your blood pressure and heart rate can go up and down during this stage.
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A high heart rate can also mean the heart muscle is weakened by a virus or some other problem that forces it to beat more often to pump enough blood to the rest of the body. Usually, though, a high heart beat is not due to heart disease, because a wide variety of noncardiac factors can speed the heart rate.
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Hard exercise, anxiety, certain drugs, or a fever can spark it. When it happens for no clear reason, it's called inappropriate sinus tachycardia (IST). Your heart rate might shoot up with just a little movement or stress. Or it might be high when you're doing nothing.
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Usually, a heart rate will be slower during sleep, faster during daily activities or with exercise, and recover quickly back to a resting rate after exercise.
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Chronic sleep deprivation—which can lead to fatigue, a lower metabolism, and extra snacking—can raise the RHR. So aim for at least seven hours of sleep each night. Prolonged stress can also cause resting heart rate to creep up, and the associated increase can result in a higher risk of heart attacks and stroke.
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In otherwise healthy people, I don't usually worry about the heart rate unless it is consistently above 100 beats per minute at rest. Heart rates that are consistently above 100, even when the patient is sitting quietly, can sometimes be caused by an abnormal heart rhythm.
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When you sleep, your body isn't doing as much, so your heart can slow down. “Sleep is your time to reset. If you're not getting that recovery phase, your adrenaline levels during the day can be higher,” Dr. Mills-Frazier says. Excess adrenaline charging through your system during the day can lead to a faster heartbeat.
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As compared to wakefulness, during non-REM sleep there is an overall reduction in heart rate and blood pressure. During REM sleep, however, there is a more pronounced variation in cardiovascular activity, with overall increases in blood pressure and heart rate.
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When your heart beats too fast, it can't pump out enough blood. You might feel tired, short of breath, or dizzy as a result of this condition that starts in the upper chambers of your heart.
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Too many signals lead to a rapid heart rate. It most often ranges between 100 to 130 beats per minute or more in adults. The rapid heart rate causes the heart to work too hard and not move blood efficiently. If the heartbeat is very fast, there is less time for the heart chamber to fill with blood between beats.
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Sleep apnea and bradycardia: The cardiovascular connection A slow heart rate can mean you're not getting enough oxygen, and failure to get enough oxygen is symptomatic of sleep apnea, a condition that causes you to continually wake up throughout the night because of obstructed breathing.