OverviewMany things can trigger palpitations, including:
Sometimes palpitations are symptoms of arrhythmias. Arrhythmias are problems with the speed or rhythm of the heartbeat. Some arrhythmias are signs of heart disease, including heart attack, heart failure, heart valve problems, or heart muscle problems. However, less than half of the people who have palpitations have arrhythmias.
People can reduce or prevent palpitations by avoiding things that trigger them (such as stress and stimulants) and treating related medical conditions.
OutlookPalpitations are very common. They usually aren't serious or harmful, but they can be bothersome. If you have them, your doctor can check to see whether you need treatment or ongoing care.
What causes heart palpitations?Many things can cause palpitations. You may feel palpitations even when your heart is beating normally or somewhat faster than normal. In these cases, nothing is wrong with your heart.
However, some palpitations are a sign of an actual heart problem. Sometimes, the cause of palpitations can't be found.
If you start having palpitations, you should see your doctor to have them checked out.
Causes not related to heart problems
You may feel your heart pounding or racing during anxiety, fear, or stress. You also may have these feelings if you're having a panic attack.
Vigorous physical activity
Intense activity can make it feel as though your heart is beating too hard or fast, even though it's working normally. It also may cause an occasional premature (extra) heartbeat.
Certain medical conditions can cause palpitations. This is because they can make the heart beat faster or stronger or cause premature (extra) heartbeats. These conditions include:
The hormonal changes that happen during pregnancy, menstruation, and the perimenopausal period can sometimes cause palpitations. These palpitations will likely improve or go away as these conditions go away or change.
Some palpitations that occur during pregnancy may be due to anemia.
Medicines and stimulants
A number of medicines can trigger palpitations because they can make the heart beat faster or stronger or cause premature (extra) heartbeats. These include:
Caffeine, nicotine (found in tobacco), alcohol, and illegal drugs (such as cocaine and amphetamines) also may cause palpitations.
Causes related to heart problems
Sometimes, palpitations are the symptoms of arrhythmias. Arrhythmias are problems with the speed or rhythm of the heartbeat. However, less than half of the people who have palpitations have arrhythmias.
During an arrhythmia, the heart can beat too fast, too slow, or with an irregular rhythm. An arrhythmia happens when some part of the heart's electrical system doesn't work as it should.
Palpitations are more likely to be related to an arrhythmia if you:
Who is at risk for palpitations?Some people may be more likely to have palpitations, including people who:
What are the signs and symptoms of heart palpitations?Symptoms of palpitations include feelings that your heart is:
Often, palpitations are harmless and your heart is working normally. Palpitations can be a sign of a more serious problem if you also:
How are palpitations diagnosed?Your doctor will first want to find out whether your palpitations are harmless or related to a more serious heart problem. To do this, he or she will ask about your symptoms and medical history, do a physical exam, and order several basic tests.
This information may point to a heart problem as the cause for your palpitations. If so, your doctor may recommend more tests. These will help show what the problem is and how to treat it.
The cause of palpitations may be hard to diagnose, especially if symptoms don't occur regularly.
Specialists involvedSeveral types of doctors may work with you to diagnose and treat your palpitations. These include a:
Medical historyYour doctor will ask questions about your palpitations, such as:
Physical examYour doctor will take your pulse to find out how fast your heart is beating and whether it's beating with a normal rhythm. He or she also will use a stethoscope to listen to your heartbeat.
Your doctor also may look for signs of other conditions (such as an overactive thyroid) that can cause palpitations.
Diagnostic testsOften, the first test that's done is an EKG (electrocardiogram). This simple test records your heart's electrical activity. An EKG is used to detect and locate the source of heart problems. It shows how fast your heart is beating and whether its rhythm is steady or irregular. It records the strength and timing of electrical signals as they pass through each part of your heart.
Even if your EKG results are normal, you may still have a medical condition that's causing palpitations. If your doctor suspects this is the case, he or she will order blood tests to gather more information about your heart's structure, function, and electrical system.
A Holter monitor records the electrical signals of your heart for a full 24- or 48-hour period. You wear small patches called electrodes on your chest. Wires connect the patches to a small, portable recorder. The recorder can be clipped to a belt, kept in a pocket, or hung around your neck.
During the 24- or 48-hour period, you do your usual daily activities. You keep a notebook and note any symptoms you have and the time they occur. You then return both the recorder and the notebook to your doctor to read the results. Your doctor can see how your heart was beating at the time you had symptoms.
An event monitor is similar to a Holter monitor. You wear an event monitor while doing your normal activities. However, an event monitor only records your heart's electrical activity at certain times while you're wearing it.
For many event monitors, you push a button to start the monitor when you feel symptoms. Other event monitors start automatically when they sense abnormal heart rhythms.
Event monitors can be worn for 1 to 2 months, or as long as it takes to record your heart's activity during palpitations.
Echocardiography uses sound waves to create a moving picture of your heart. The picture shows the size and shape of your heart. It also shows your heart valves and how well they're working.
Some heart problems are easier to diagnose when your heart is working harder and beating faster than when it's at rest. During stress testing, you exercise (or are given medicine if you're unable to exercise) to make your heart work hard and beat fast while heart tests are done.
How are palpitations treated?Treatment depends on the cause of the palpitations. Most palpitations are harmless and often go away on their own. In these cases, no treatment is needed.
Avoiding triggersYour palpitations may be harmless but bothersome. If so, your doctor may suggest avoiding things that trigger them. Your doctor may advise you to:
Treating medical conditions that may cause palpitationsYour doctor will try to help you control medical conditions (such as an overactive thyroid) that can cause palpitations. If you're taking medicine that's causing the palpitations, your doctor will try to find a different medicine for you.
If your palpitations are due to an arrhythmia, your doctor may choose to treat it with medicines or procedures.
How can palpitations be prevented?You can take steps to prevent palpitations.
Living with palpitationsMost palpitations are harmless and often go away on their own. In these cases, no treatment is needed. Your doctor may advise you to avoid triggers for palpitations.
Your doctor may have already told you that your palpitations are harmless. However, if they become very noticeable or bothersome, you should see your doctor again. You also should see your doctor if your palpitations get worse or begin to happen more often.
Your doctor will tell you about other signs and symptoms to be aware of and when to seek emergency care.
Your palpitations may be due to a medical condition or heart problem. If so, your doctor will give you advice and treatment for your condition.
Related categories• HEART TOPICS
• HEALTH AND DISEASE
Source: U.S. National Heart, Lung and Blood Institute
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