Arrhythmias: symptoms, causes, and when to worry

An arrhythmia is a change in the rhythm of the heart. The heart may beat too fast, too slowly, or irregularly. Some rhythm changes are harmless or temporary, while others need proper medical evaluation and treatment.

Palpitations are one of the most common reasons people worry about their heart rhythm. They can feel like racing, fluttering, skipped beats, pounding, or a heartbeat that suddenly feels very noticeable. But palpitations are a symptom, not a diagnosis.

This article summarizes the key points from my health video on arrhythmias. It is educational and does not replace advice from your doctor, cardiologist, pharmacist, or healthcare professional.

What An Arrhythmia Is

The heart has an electrical system that coordinates each beat. When the electrical signal starts in the wrong place, travels abnormally, comes too early, slows down, or becomes disorganized, the rhythm can change.

In simple terms, arrhythmias can involve a heart that beats too fast, too slowly, or irregularly. The meaning depends on the type of rhythm, the person’s symptoms, and their underlying health.

Symptoms To Notice

Possible symptoms include palpitations, chest discomfort, shortness of breath, dizziness, fainting, unusual tiredness, weakness, reduced exercise tolerance, or a sensation that the heart is beating in the throat.

Some arrhythmias cause no symptoms and are discovered during a routine check. Others appear suddenly and feel very intense. The absence or presence of symptoms does not always tell the whole story.

Common Triggers And Causes

Arrhythmias can be linked to heart disease, high blood pressure, previous heart attack, valve disease, heart failure, thyroid disorders, anemia, fever, dehydration, electrolyte imbalances, sleep apnea, alcohol, stimulants, and some medicines.

Stress and anxiety can increase awareness of the heartbeat and can also trigger palpitations in some people. But it is important not to dismiss symptoms as “just stress” before considering other causes.

Diagnosis

An electrocardiogram, or ECG, is often the first test. However, if symptoms come and go, a short ECG may miss the episode.

Doctors may use longer monitoring such as a Holter ECG, event recorder, blood tests, thyroid checks, echocardiography, or other exams depending on the situation. Wearable devices can be useful for noticing patterns, but they do not replace medical diagnosis.

Treatment

Not every arrhythmia needs a specific treatment. Sometimes the main step is correcting triggers such as dehydration, thyroid problems, stimulant use, fever, or medication issues.

Other cases may require medicines, rhythm control, rate control, anticoagulants, cardioversion, ablation, pacemaker, or defibrillator therapy. The right treatment depends completely on the arrhythmia type and the person’s risk profile.

When To Seek Urgent Help

Seek urgent medical help if palpitations are associated with fainting, chest pain, severe shortness of breath, confusion, severe weakness, neurological symptoms, or a very fast or very slow heartbeat that does not settle.

People with known heart disease, previous stroke, heart failure, or significant risk factors should be especially cautious and should not stop prescribed heart medicines without medical advice.

Watch The Video

• Full video: Arrhythmias: symptoms, causes, and when to worry

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