Bradycardia can be a serious problem if the heart rate is very slow and the heart can't pump enough oxygen-rich blood to the body. If this happens, you may feel dizzy, very tired or weak, and short of breath. Sometimes bradycardia doesn't cause symptoms or complications.
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.
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.
Causes of Low Heart Rate Problems
Other causes of low heart rate include an atrioventricular block, age, and certain conditions such as inflammation of the heart muscle, low thyroid function, electrolyte imbalance, obstructive sleep apnea, or heart attack due to coronary artery disease.
It can cause episodes of a fast, irregular heart rate, which can feel like a persistent heart flutter, and you may feel dizzy, short of breath and extremely tired. Atrial fibrillation is generally not life threatening, but can be uncomfortable and often needs treating.
If you're sitting down and feeling calm, your heart shouldn't beat more than about 100 times per minute. A heartbeat that's faster than this, also called tachycardia, is a reason to come to the emergency department and get checked out. We often see patients whose hearts are beating 160 beats per minute or more.
Generally, see your doctor if you experience any recurrent, sudden, severe, or prolonged and unexplained dizziness or vertigo. Get emergency medical care if you experience new, severe dizziness or vertigo along with any of the following: Sudden, severe headache. Chest pain.
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.
Average Heart Rates While 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.
These can include shortness of breath, chest pain, dizziness, fainting, or extreme fatigue. If you are worried about your heart rate, or experiencing any of these symptoms, it is best not to delay medical evaluation.
Can Bradycardia Cause Stroke?: A specific type of bradycardia (slow heart rate) 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.
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.
Doctors consider a low heart rate to be 60 beats per minute (bpm) and below. In fact, if you have bradycardia, you'll have a low resting heart rate below 60, even when you're awake and active. In contrast, a normal range is 60 to 100 bpm while awake.
How does dehydration affect heart rate? If you are dehydrated, the amount of blood circulating through your body decreases. Your heart will try to compensate by beating faster, increasing your heart rate. This places strain on your heart as it needs to work harder than normal.
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.
While a low pulse rate can be associated with high blood pressure, it can also be caused by other conditions. Your body receives less oxygen when experiencing a low heart rate since less blood is pumped out. It's also important to note that heart rate is situational.
The normal heart rate range for adults is between 60 and 100 beats per minute.
Dizziness by itself is not a common symptom of a brain tumor. Most cases of dizziness are related to an inner ear problem, anemia, dehydration or taking certain medications.
Additional symptoms of a clogged artery may include: Dizziness or weakness. Heart palpitations, or sensations of your heart racing or fluttering. Nausea or sweating.
In general, if dizziness lasts longer than a few days, or is severe enough to keep you from normal activities, you should talk with your doctor. Depending on the cause, there are medications and physical therapy options that may give you some relief.