Bradycardia is a slower than normal heart rate. A normal adult resting heart rate is between 60 – 100 beats per minute (bpm). If you have bradycardia, your heart beats fewer than 60 times a minute.
The main symptom of bradycardia is a heart rate below 60 beats per minute. This abnormally low heart rate can cause the brain and other organs to become oxygen-deprived, which can lead to symptoms such as: Fainting. Dizziness.
A “normal” RHR falls between 60 and 100 beats per minute. An RHR under 60 can indicate that you're more physically fit and may be associated with better heart function. An RHR that is above 100 beats per minute can reflect exposure to stress, excessive caffeine consumption or an illness.
The normal range is between 50 and 100 beats per minute. If your resting heart rate is above 100, it's called tachycardia; below 60, and it's called bradycardia. Increasingly, experts pin an ideal resting heart rate at between 50 to 70 beats per minute.
In general, a slower resting heart rate (or low pulse rate) is better than a fast one. A high resting heart rate has been linked to atherosclerosis, sudden death, and an increased risk of dying from cardiovascular disease.
A normal resting heart rate should be between 60 to 100 beats per minute, but it can vary from minute to minute. Your age and general health can also affect your pulse rate, so it's important to remember that a 'normal' pulse can vary from person to person.
Studies have consistently shown that a lower resting heart rate, at least down to 40 bpm, is associated with a longer life span, both in comparisons between individuals and between species. For every 20 additional beats per minute of resting heart rate, mortality increases by 30–50 percent.
A normal adult resting heart rate is between 60 – 100 beats per minute (bpm). If you have bradycardia, your heart beats fewer than 60 times a minute. Bradycardia (heart rate 40 – 60 bpm) can be normal when you're sleeping.
During sleep, it is normal for a person's heart rate to slow down below the range for a typical resting heart rate. Between 40 to 50 beats per minute (bpm) is considered an average sleeping heart rate for adults, though this can vary depending on multiple factors.
In general, for adults, a resting heart rate of fewer than 60 beats per minute (BPM) qualifies as bradycardia. There are exceptions. Your heart rate may fall below 60 BPM during deep sleep. Physically active adults (and athletes) often have a resting heart rate slower than 60 BPM.
A slow heart rate isn't always a concern. For example, a resting heart rate between 40 and 60 beats a minute is quite common during sleep and in some people, particularly healthy young adults and trained athletes.
A slow heart rate (or a low heart rate) is known as bradycardia and occurs frequently in older adults. “As people get older, there is occasional normal wear and tear on the electrical system of the heart,” says cardiologist Jose Baez-Escudero, MD. “As a result, the normal rhythm tends to slow down.”
What many may not realize is that anxiety can cause the heartbeat to slow down as well. It's not that common, but it is possible, and in some cases the issue may not be a slow heartbeat at all but your own mind telling you that your heart rate is abnormal even when this isn't necessarily the case.
Warning signs and symptoms of heart failure include shortness of breath, chronic coughing or wheezing, swelling, fatigue, loss of appetite, and others. Heart failure means the heart has failed to pump the way it should in order to circulate oxygen-rich blood throughout the body.
A normal resting heart rate for adults ranges from 60 to 100 beats per minute. Generally, a lower heart rate at rest implies more efficient heart function and better cardiovascular fitness. For example, a well-trained athlete might have a normal resting heart rate closer to 40 beats per minute.
Sinus rhythm is when your heart is beating regularly and normally. Sinus bradycardia means that your heart is beating regularly, but slower than normal. Sinus bradycardia is usually a benign arrhythmia (especially in very active people). That means while it's slower than expected, it also isn't harmful.
A resting heart rate between 40 and 60 beats a minute during sleep is common for many people during sleep. It's also common for trained athletes, healthy young adults, and those who work out regularly to have a low heart rate while exercising – this low heart rate associated with fitness is health and normal.
If you do not have other heart problems, you likely do not have limits on the type or level of activity that you can do. You may want to walk, swim, bike, or do other activities. Ask your doctor what level of exercise is safe for you.
A specific type of bradycardia called junctional bradycardia, in which the heart rate is below 40 beats per minute, may be associated with ischemic stroke, a type of stroke in which a blood vessel to the brain is obstructed or blocked.
Bradycardia treatment may include lifestyle changes, medication changes or an implanted device called a pacemaker. If an underlying health problem, such as thyroid disease or sleep apnea, is causing the slow heart rate, treatment of that condition might correct bradycardia.
Summary: Bradycardia -- a slower than normal heartbeat -- does not increase the risk of developing cardiovascular disease, according to a study. The heart usually beats between 60 and 100 times a minute in an adult at rest.
A slow heartbeat also may lead to heart failure. Treating an irregular heart rhythm may reverse heart failure in some people. Other diseases. Some long-term diseases may contribute to chronic heart failure.
As reported by Science Daily, the medical journal Open Heart has published a study that found that men in their 50s who have a resting heart rate of 75 beats per minute or higher are twice as likely to die of heart disease within 11 years than peers with a resting rate of 55 bpm or fewer.