what happens if my heart rate is too slow?
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A heart rate that's too slow can cause insufficient blood flow to the brain. Symptoms of bradycardia include: Fatigue or feeling weak. Dizziness or lightheadedness.
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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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Consult your doctor if your resting heart rate is consistently above 100 beats a minute (tachycardia) or if you're not a trained athlete and your resting heart rate is below 60 beats a minute (bradycardia) — especially if you have other signs or symptoms, such as fainting, dizziness or shortness of breath.
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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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Bradycardia is a heart rate that's too slow. What's considered too slow can depend on your age and physical condition. Elderly people, for example, are more prone to bradycardia. In general, for adults, a resting heart rate of fewer than 60 beats per minute (BPM) qualifies as bradycardia.
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In general, for adults, a resting heart rate of fewer than 60 beats per minute (BPM) qualifies as bradycardia. But there are exceptions. Your heart rate may fall below 60 BPM during deep sleep. And physically active adults (and athletes) often have a resting heart rate slower than 60 BPM.
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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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When the heart beats too rapidly, it pumps less efficiently and blood flow to the rest of the body, including the heart itself, is reduced. Because the heart is beating quicker, the muscles of the heart, or myocardium, need more oxygen.
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Your heart rate slows down When our bodies are deprived of oxygen, the heart can't pump fresh, oxygenated blood out to the body. Studies show that about 30 seconds of breath-holding can lead to a lowered heart rate and lower cardiac output.
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Heart rate is a good measure of how far a person is pushing themselves during exercise. A low heart rate during exercise may mean that a person could increase the intensity of that activity, while a heart rate that is too high can be dangerous.
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The chaotic heartbeats prevent the heart chambers from properly filling with blood. As a result, your heart may not be able to pump enough blood to your body and lungs. Ventricular tachycardia may last for only a few seconds, or it can last for much longer. You may feel dizzy or short of breath, or have chest pain.
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Heart rhythm problems (heart arrhythmias) occur when the electrical impulses that coordinate your heartbeats don't work properly, causing your heart to beat too fast, too slow or irregularly. Heart arrhythmias (uh-RITH-me-uhs) may feel like a fluttering or racing heart and may be harmless.
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Bradycardia is a medical term for a slow heart rate. Most adult hearts beat between 50 and 100 times per minute at rest. If you have bradycardia, your resting heart rate is slower than usual—beating fewer than 50 times per minute. Bradycardia can be harmless, but in some cases it can be life-threatening.
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If your heart rate drops into the 30s, you might not get enough oxygen to your brain, making fainting, lightheadedness, and shortness of breath possible. Blood can also pool in your heart chambers, causing congestive heart failure.
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Your resting heart rate will become lower as your fitness level increases. Vigorous aerobic exercise, such as running or cycling, has the most effect on lowering your resting heart rate. Moderate-intensity exercise such as brisk walking has less effect.
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Lightheadedness. If you have an arrhythmia that causes your heart to beat too fast or too slow, you may feel lightheaded or dizzy. This happens because your heart cannot pump blood effectively during excessively fast or slow heart rates.
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When you have SVT, the electrical system in your heart isn't working right. You might experience a sudden rapid heartbeat, which can lead to shortness of breath, chest pain and, in rare cases, loss of consciousness. SVT often ends suddenly. It stops either on its own or when you take an action to slow your heart rate.