Your heart follows a rhythm that allows it to pump blood efficiently throughout your body. Most people do not notice their heartbeat during everyday activities, but there are times when it may suddenly feel different. You might notice a fluttering sensation, a racing pulse, an unusually slow heartbeat or the feeling that your heart has briefly paused.

These changes can sometimes be caused by a heart arrhythmia.

An arrhythmia means that the heart is beating with an abnormal rate or rhythm. Some rhythm changes are harmless and may not need treatment, while others can be associated with heart disease or increase the risk of complications. Arrhythmias can also occur without noticeable symptoms, which makes proper evaluation important when unusual heartbeat patterns keep returning.

What Happens During a Heart Arrhythmia?

The heart has a built-in electrical system that coordinates each heartbeat. Electrical signals travel through specific areas of the heart, telling the chambers when to contract and pump blood.

When those signals are interrupted, delayed or generated abnormally, the heartbeat can change.

An arrhythmia may make the heart beat:

• Faster than usual
• Slower than usual
• In an uneven pattern
• With occasional extra or premature beats

Tachycardia is the term used for a fast heart rate, while bradycardia describes a slow heart rate. There are also several specific rhythm disorders, including atrial fibrillation, supraventricular tachycardia and certain ventricular arrhythmias.

The significance of an arrhythmia depends on the particular rhythm, how long it lasts, whether it causes symptoms and whether there is an underlying heart condition.

Why Does Heart Arrhythmia Happen?

There are many possible reasons for an irregular heartbeat. Sometimes the problem develops because the heart itself has been affected by another condition. In other cases, factors outside the heart can influence its electrical activity.

Possible causes and contributing factors include:

• High blood pressure
• Coronary artery disease
• Previous heart attack
• Heart valve problems
• Heart failure
• Changes in heart structure
• Thyroid disorders
• Diabetes
• Electrolyte disturbances
• Sleep apnea
• Certain medicines
• Smoking
• Excessive alcohol consumption
• Stress
• High intake of stimulants such as caffeine
• Some inherited heart conditions

Not every episode of a racing or pounding heart is caused by an arrhythmia. Exercise, emotional stress, fever, hormonal changes and certain medicines can also cause temporary palpitations.

That is why the sensation alone cannot tell you exactly what is happening. If episodes continue or become more frequent, medical assessment can help identify the cause.

What Are the Symptoms of Heart Arrhythmia?

The experience of an arrhythmia can be very different from one person to another. Some people notice an obvious change in their heartbeat, while others mainly feel weak or dizzy.

Common symptoms may include:

• Fluttering in the chest
• A racing heartbeat
• A pounding sensation
• Feeling as though the heart has skipped a beat
• An unusually slow pulse
• Dizziness
• Lightheadedness
• Weakness or unusual tiredness
• Shortness of breath
• Sweating
• Chest discomfort
• Feeling close to fainting
• Fainting

Some arrhythmias produce no symptoms at all and are discovered during a routine examination or ECG performed for another reason.

If you repeatedly notice unusual changes in your heartbeat, it is better to discuss them with a doctor rather than assuming that they are caused by stress or tiredness.

When Should an Irregular Heartbeat Be Taken Seriously?

A brief palpitation is not necessarily an emergency. However, an abnormal heartbeat accompanied by certain symptoms requires prompt medical attention.

Seek urgent medical care if you experience an irregular or very fast heartbeat together with:

• Chest pain or pressure
• Severe difficulty breathing
• Fainting
• Severe dizziness
• Collapse
• Sudden or severe weakness

Some serious rhythm disorders can interfere with the heart’s ability to circulate blood properly. Ventricular fibrillation, for example, can cause sudden collapse and requires immediate emergency treatment.

If a person suddenly collapses, is unresponsive and is not breathing normally, emergency services should be contacted immediately and CPR should be started if appropriate.

How Do Doctors Find Out If You Have an Arrhythmia?

Arrhythmias can be difficult to identify when they happen only occasionally. A person’s heartbeat may be completely normal by the time they reach a doctor’s office.

The evaluation usually begins with questions about your symptoms, medical history and possible triggers. Your doctor may also check your pulse and perform a physical examination.

Depending on what is suspected, one or more heart tests may be recommended.

ECG or EKG

An electrocardiogram, commonly called an ECG or EKG, records the heart’s electrical activity.

It can show whether the heartbeat is too fast, too slow or following an abnormal pattern. Since a standard ECG only records a short period of heart activity, an occasional rhythm problem may not appear during the test.

Holter Monitoring

A Holter monitor is a portable device that continuously records the heart’s electrical activity while you go about your normal routine.

It can be particularly helpful when symptoms do not happen during a regular ECG. Doctors may also ask you to note when you experience palpitations so that the symptoms can be compared with the recorded rhythm.

Event Monitoring

When symptoms occur only occasionally, longer monitoring may be needed.

An event recorder can be worn for an extended period and used to capture the heart rhythm when symptoms occur. This can provide information that a short ECG may miss.

Echocardiogram

An echocardiogram uses ultrasound to create moving images of the heart.

It allows doctors to examine the heart’s chambers, valves, structure and pumping function. This can help determine whether a structural heart problem is associated with the rhythm abnormality.

Depending on the situation, a doctor may recommend additional investigations such as an exercise stress test, tilt-table test or electrophysiology study.

What Treatment Options Are Available?

Treatment depends on the type of arrhythmia, its underlying cause and how it affects the person. Some arrhythmias may only require regular monitoring, while others may need medication, procedures or other forms of treatment. 

When treatment is required, the approach depends on the type of rhythm problem, its cause, symptoms and the person’s risk of complications.

Medication

Certain medicines can help control the heart rate or influence the heart’s rhythm.

People with some forms of atrial fibrillation may also be prescribed blood-thinning medicines to reduce the risk of blood clots and stroke. Whether this is needed depends on the individual’s risk profile and medical history.

Cardioversion

Cardioversion is used for selected abnormal rhythms. It involves using a controlled electrical shock to help restore a more regular heart rhythm.

The procedure is performed under medical supervision, and its suitability depends on the particular arrhythmia and the patient’s circumstances.

Catheter Ablation

Some arrhythmias can be treated with catheter ablation.

In this procedure, thin catheters are guided through a blood vessel toward the heart. The specialist identifies the area responsible for abnormal electrical signals and treats it using heat or extreme cold. This creates small areas of scar tissue that can prevent unwanted electrical signals from continuing.

Pacemaker

A pacemaker may be considered when a person’s heart beats too slowly and the problem cannot be corrected in another way.

The device monitors the heartbeat and provides electrical signals when necessary to help maintain an appropriate rhythm.

Implantable Cardioverter-Defibrillator

An implantable cardioverter-defibrillator, or ICD, is used in selected people who have a significant risk of certain dangerous heart rhythms.

The device continuously checks the heart rhythm and can deliver an electrical shock when it detects a potentially life-threatening rhythm.

Can Everyday Habits Affect Heart Rhythm?

Taking care of your cardiovascular health can be helpful, particularly when an arrhythmia is associated with other heart-related risk factors.

Depending on your doctor’s advice, useful habits may include:

• Avoiding smoking
• Limiting alcohol
• Eating a balanced diet
• Maintaining a healthy weight
• Staying physically active
• Managing blood pressure
• Keeping cholesterol under control
• Getting sufficient sleep
• Managing stress
• Following treatment for conditions such as diabetes or thyroid disease

It can also be useful to notice when your symptoms occur. For example, you might record whether palpitations happen after exercise, during periods of stress, after consuming caffeine or while resting. Sharing this information with your doctor can make the evaluation more informative.

When Should You Consult a Cardiologist?

You do not need to ignore repeated palpitations simply because they disappear after a few minutes.

Consider speaking with a doctor if you notice:

• Repeated racing or pounding heartbeats
• Frequent skipped beats
• Episodes that are becoming more common
• Dizziness during palpitations
• Unexplained tiredness
• Shortness of breath
• Feeling faint
• A known history of heart disease

A cardiologist can assess your symptoms and determine whether monitoring or further testing is necessary.

Cardiac Healthcare Services in Trivandrum at NIMS Micro Hospitals

For people searching for Cardiac Healthcare Services in Trivandrum, NIMS Micro Hospitals provides cardiac evaluation and treatment services for different heart-related conditions.

Its Cardiology Department includes services such as ECG, cardiac monitoring, echocardiography, evaluation of chest pain, blood pressure management, preventive cardiac care and arrhythmia evaluation and management.

For someone experiencing repeated palpitations or unexplained changes in heart rhythm, a proper cardiac assessment can help determine whether the symptoms are related to an arrhythmia or another condition.

The appropriate test or treatment will depend on the person’s symptoms, medical history and clinical findings.

Final Thoughts

A change in your heartbeat can be unsettling, but an irregular rhythm does not always indicate a serious heart problem. At the same time, recurring symptoms should not be dismissed without understanding what is causing them.

Heart arrhythmias can take different forms and may occur because of heart disease, other medical conditions, medications or lifestyle factors. Some people may need only regular observation, while others may require medication, a procedure or an implanted cardiac device.

If you regularly experience palpitations, dizziness, breathlessness or an unusually fast or slow heartbeat, speak with a healthcare professional. And if an abnormal heartbeat occurs with chest pain, severe breathing difficulty or fainting, seek emergency medical care immediately.