Common Causes of Heart Palpitations: Symptoms & Diagnosis

By Dr. Priya Sharma, MD — Internal Medicine Specialist, Apollo Hospitals, Delhi

Many of us have experienced that unsettling feeling: a sudden flutter, skip, or pounding in our chest. These sensations are commonly known as heart palpitations. Honestly, they can be quite alarming, leading people to wonder about their underlying cause.

In my practice at Apollo Hospitals, I've seen countless patients worried about these episodes. The reality is, while sometimes benign, palpitations can indicate a serious medical condition. Understanding their common causes and the diagnostic process is crucial for managing your heart health.

Understanding Heart Palpitations

Heart palpitations are sensations that your heart is beating too fast, fluttering, pounding, or skipping beats. They are a symptom, not a disease itself. This means they are a signal that something else is happening in your body. How serious is this really? The answer depends entirely on the root cause.

usual Triggers and Causes

Several factors can trigger or contribute to heart palpitations. In many cases, these are lifestyle-related and easily managed.

Lifestyle Factors

• Stress and Anxiety: Emotional stress, anxiety attacks, or even excitement can flood your body with adrenaline. This hormone increases your heart rate, often leading to palpitations.
• Physical Activity: Strenuous exercise can naturally cause your heart to beat harder and faster. This is usually normal.
• Caffeine and Nicotine: Stimulants like those found in coffee, tea, energy drinks, and cigarettes can significantly affect heart rhythm.
• Alcohol: Consuming alcohol, especially in large amounts or during 'holiday heart syndrome', can trigger palpitations.
• Dehydration: Not drinking enough fluids can sometimes cause your heart to beat faster to compensate.
• Certain Medications: Some prescription drugs (like asthma inhalers or thyroid medication) and over-the-counter supplements can have palpitations as a side effect.

Medical Conditions

When lifestyle factors aren't the culprit, underlying medical conditions often are. In real-world terms, these require medical attention.

• Arrhythmias: These are irregular heart rhythms. Examples include atrial fibrillation (AFib), where the upper chambers of the heart quiver irregularly, or supraventricular tachycardia (SVT), a rapid heart rate originating above the ventricles. These are vital to diagnose.
• Heart Disease: Conditions like heart failure or damage from a previous heart attack can affect the heart's electrical system and pumping ability, leading to palpitations.
• Thyroid Disorders: An overactive thyroid (hyperthyroidism) produces excess thyroid hormone, which can speed up your metabolism and heart rate.
• Electrolyte Imbalances: Low levels of potassium or magnesium can disrupt the heart's electrical signals.
• Anemia: A low red blood cell count means your heart must work harder to supply oxygen to your body, potentially causing palpitations.
• Fever: Your heart rate often increases when you have a fever as your body fights infection.

Recognizing the Symptoms

Besides the primary sensation of your heart beating unusually, other signs might accompany palpitations. These can include:

• Dizziness or lightheadedness
• Shortness of breath
• Chest pain or discomfort
• Fainting (syncope)

So what does that mean for you? Experiencing these additional indicators alongside palpitations warrants immediate medical evaluation.

Diagnosis: How Doctors Investigate

Diagnosing the cause of heart palpitations involves a thorough medical history, physical examination, and specific tests. Physicians aim to pinpoint the exact reason for your warning signs.

Medical History and Physical Exam

Your doctor will ask detailed questions about your palpitations: when they occur, how long they last, what you were doing, and any other signs you experience. They will also review your medical history, medications, diet, and lifestyle habits. A physical exam includes listening to your heart and checking your pulse.

That alone changes everything.

Diagnostic Tests

Depending on your initial assessment, several tests may be recommended:

• Electrocardiogram (ECG or EKG): This is a fundamental test that records the electrical activity of your heart. It can often detect arrhythmias or other electrical abnormalities. We often see arrhythmias picked up clearly on an ECG.
• Holter Monitor: If palpitations are infrequent, a Holter monitor (a portable ECG device) is worn for 24-48 hours or longer to capture irregular heartbeats that might not show up on a standard ECG.
• Event Monitor: Similar to a Holter monitor, but you activate it only when you feel warning signs. This is useful for less frequent episodes.
• Echocardiogram: This ultrasound of the heart assesses its structure and function, looking for valve problems or weaknesses.
• Blood Tests: These can check for thyroid problems, electrolyte imbalances, anemia, or other underlying conditions.
• Stress Test: Sometimes, an ECG is performed while you exercise on a treadmill to see how your heart responds to physical stress.

Living with Palpitations

Living with frequent or concerning heart palpitations is genuinely hard. However, many causes are manageable with the right approach. For instance, managing stress through techniques like yoga or meditation can be impactful.

Adjusting your diet to reduce caffeine or alcohol intake often helps significantly. Sometimes, simple lifestyle changes are as effective as medication.

In my practice, I've guided many sufferers through diagnosis and treatment. Early detection and appropriate care, guided by established standards like those from the World Health Organization (WHO) or the Indian Council of Medical Research (ICMR), are key to maintaining heart health and peace of mind.

Remember, just like ensuring your home’s wiring is sound prevents electrical issues, understanding your heart's signals helps prevent serious problems.

Frequently Asked Questions

Can I drink coffee if I have palpitations?

It's generally advisable to limit or avoid caffeine if you experience palpitations. Caffeine is a stimulant that can trigger or worsen these sensations in many individuals. Monitoring your body's reaction is key.

Are heart palpitations always a sign of a serious problem?

No, not always. Many palpitations are triggered by lifestyle factors like stress, caffeine, or dehydration and are harmless. However, they can sometimes indicate an underlying heart issue, so a medical evaluation is important if they are frequent or accompanied by other indicators.

And yet, so many people miss it.

How long should I wait to see a doctor about palpitations?

If your palpitations are accompanied by chest pain, shortness of breath, dizziness, or fainting, seek immediate medical attention. For occasional, non-alarming palpitations, schedule an appointment with your doctor for a proper evaluation and diagnosis.

Always consult a qualified physician before making medical decisions.