Racing Heartbeat (Tachycardia)

Introduction

A racing heartbeat, also called tachycardia, is a condition where your heart beats faster than normal. Normally, a healthy adult’s heart rate is between 60-100 beats per minute (BPM). If your heart rate is above 100 BPM while at rest, it could be tachycardia.

Causes of Tachycardia

There are many reasons why your heart might beat too fast. Some common causes include:

1. Physiological Causes (Normal Reactions)

  • Exercise
  • Anxiety or stress
  • Fever
  • Caffeine or alcohol
  • Nicotine or other stimulants

2. Medical Conditions

  • Atrial Fibrillation (AFib): Irregular and often rapid heartbeat that increases stroke risk.
  • Supraventricular Tachycardia (SVT): Abnormally fast heart rate starting in the atria.
  • Ventricular Tachycardia (VT): Dangerous fast heartbeat from lower chambers (ventricles).
  • Hyperthyroidism: Overactive thyroid gland increasing heart rate.
  • Anemia: Lack of red blood cells causing the heart to pump faster.
  • Dehydration: Low blood volume forcing the heart to beat quicker.

Symptoms of Tachycardia

  • Palpitations (feeling your heart racing)
  • Dizziness or lightheadedness
  • Shortness of breath
  • Chest pain or discomfort
  • Fainting (in severe cases)

When to Seek Medical Help

You should see a doctor if: - Your racing heart happens frequently and lasts several minutes. - You feel chest pain or shortness of breath. - You have a history of heart disease. - You faint or feel extremely dizzy.

Diagnosis and Tests

Doctors may use the following tests: - Electrocardiogram (ECG/EKG) – Records the heart’s electrical activity. - Holter Monitor – A 24-hour ECG to track abnormal rhythms. - Echocardiogram – Uses ultrasound to check heart structure. - Electrophysiology Study (EPS) – Examines how electrical signals travel through your heart.

Treatment Options

Lifestyle Modifications

  • Reduce stress (yoga, meditation).
  • Avoid caffeine, alcohol, and smoking.
  • Stay hydrated.
  • Get enough sleep.

Medications

  • Beta-Blockers (e.g., Metoprolol, Atenolol): Slow down the heart rate.
  • Calcium Channel Blockers (e.g., Diltiazem, Verapamil): Control heart rhythms.
  • Antiarrhythmic Drugs (e.g., Amiodarone): Used for serious rhythm disorders.

Medical Procedures

  • Cardioversion: A controlled shock to restore normal rhythm.
  • Ablation Therapy: Destroys abnormal electrical pathways in the heart.
  • Pacemaker or Implantable Cardioverter-Defibrillator (ICD): Helps regulate heartbeat.

Conclusion

Tachycardia can be a minor issue or a serious medical condition depending on the cause. If you experience frequent palpitations or a racing heart, consult a doctor. Early diagnosis and treatment can prevent complications like stroke or heart failure.

Source recommendations

1. American Heart Association – Tachycardia Guidelines

  1. https://www.heart.org/en/health-topics/arrhythmia/about-arrhythmia/tachycardia--fast-heart-rate
  2. https://cpr.heart.org/en/resuscitation-science/cpr-and-ecc-guidelines/algorithms
  3. https://www.ahajournals.org/doi/10.1161/cir.0000000000000311
  4. https://cpr.heart.org/-/media/cpr-files/cpr-guidelines-files/algorithms/algorithmacls_tachycardia_200612.pdf
  5. https://www.ahajournals.org/doi/10.1161/CIR.0000000000000549

2. European Society of Cardiology – Supraventricular Tachycardia Guidelines

  1. https://www.escardio.org/Guidelines/Clinical-Practice-Guidelines/Supraventricular-Tachycardia
  2. https://academic.oup.com/eurheartj/article/41/5/655/5556821
  3. https://pubmed.ncbi.nlm.nih.gov/31504425/
  4. https://www.acc.org/Latest-in-Cardiology/ten-points-to-remember/2019/09/10/12/36/2019-ESC-Guidelines-for-Supraventricular-Tachycardia
  5. https://pubmed.ncbi.nlm.nih.gov/14563598/

3. European Society of Cardiology – Ventricular Arrhythmias and Sudden Cardiac Death Guidelines

  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://pubmed.ncbi.nlm.nih.gov/36017572/
  4. https://www.ahajournals.org/doi/pdf/10.1161/circulationaha.106.178233
  5. https://pubmed.ncbi.nlm.nih.gov/16949478/

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