Irregular Heartbeat (Arrhythmia)

Introduction

An irregular heartbeat, also known as arrhythmia, occurs when the heart beats too fast, too slow, or with an abnormal rhythm. This can sometimes be harmless, but in other cases, it may indicate an underlying heart condition that requires medical attention.

Causes of Irregular Heartbeat

Common causes of arrhythmias include: - Heart disease (coronary artery disease, heart failure, valve disorders) - Electrolyte imbalances (low potassium, magnesium, or calcium) - High blood pressure - Excessive caffeine, alcohol, or nicotine - Stress and anxiety - Thyroid dysfunction (hyperthyroidism or hypothyroidism) - Medications (certain drugs can trigger arrhythmias)

Symptoms to Watch For

Arrhythmias can manifest in different ways. Common symptoms include: - A racing, fluttering, or slow heartbeat - Feeling dizzy or lightheaded - Shortness of breath - Chest pain or discomfort - Fatigue - Fainting (syncope)

Diagnosis and Tests

If you experience irregular heartbeats, your doctor may recommend: - Electrocardiogram (ECG or EKG) – Measures the heart’s electrical activity - Holter monitor – Records heart activity over 24-48 hours - Echocardiogram – Uses ultrasound to check heart structure and function - Blood tests – Check for thyroid problems and electrolyte imbalances

Treatment Options

Treatment depends on the underlying cause and severity: - Lifestyle Changes: - Reduce stress and caffeine intake - Maintain a heart-healthy diet - Exercise regularly but with caution - Medications: - Antiarrhythmic drugs, beta-blockers, or calcium-channel blockers - Procedures: - Catheter ablation – Destroys abnormal heart tissue causing the arrhythmia - Pacemaker or implantable defibrillator – Helps regulate the heartbeat

When to See a Doctor

Seek immediate medical help if you experience: - Severe chest pain - Sudden fainting - Shortness of breath - A consistently high or low heart rate

Regular heart checkups can help detect issues early and prevent complications.

Source recommendations

1. American Heart Association Guidelines for Arrhythmias

  1. https://www.heart.org/en/health-topics/arrhythmia
  2. https://www.ahajournals.org/doi/10.1161/CIR.0000000000001193
  3. https://www.heart.org/en/health-topics/arrhythmia/about-arrhythmia
  4. https://www.ahajournals.org/doi/10.1161/CIR.0000000000000549
  5. https://professional.heart.org/en/guidelines-and-statements

2. European Society of Cardiology Guidelines on Cardiac Arrhythmias

  1. https://www.escardio.org/Guidelines/Clinical-Practice-Guidelines/Ventricular-Arrhythmias-and-the-Prevention-of-Sudden-Cardiac-Death
  2. https://academic.oup.com/eurheartj/article/43/40/3997/6675633
  3. https://www.escardio.org/Guidelines/Clinical-Practice-Guidelines/Supraventricular-Tachycardia
  4. https://pubmed.ncbi.nlm.nih.gov/36017572/
  5. https://www.ahajournals.org/doi/10.1161/01.cir.0000091380.04100.84

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