Abnormal Heart Rhythm (Arrhythmia)

Introduction

The human heart beats in a synchronized rhythm controlled by electrical signals. An abnormal heart rhythm, also known as arrhythmia, occurs when these signals become irregular, too fast (tachycardia), too slow (bradycardia), or erratic (fibrillation).

Types of Arrhythmias

  1. Tachycardia: Heart rate exceeds 100 beats per minute.
    • Supraventricular tachycardia (SVT) – Originates above the ventricles.
    • Ventricular tachycardia – Originates in the ventricles and can be life-threatening.
  2. Bradycardia: Heart rate is below 60 beats per minute.
    • Can be due to aging, heart diseases, or electrical signal disruptions.
  3. Atrial Fibrillation (AFib): Irregular and rapid heart rate in the upper chambers of the heart. It increases stroke risk.
  4. Ventricular Fibrillation (VFib): Disorganized electrical signals in the ventricles leading to sudden cardiac arrest.
  5. Premature Heartbeats: Extra beats disrupting normal heart rhythm, often harmless but sometimes linked to heart disease.

Symptoms of Arrhythmia

  • Palpitations (strong, fast, or irregular heartbeats)
  • Dizziness or fainting
  • Shortness of breath
  • Chest pain
  • Fatigue

Causes and Risk Factors

  • High blood pressure, coronary artery disease
  • Electrolyte imbalances (potassium, magnesium, calcium)
  • Excessive alcohol/caffeine consumption
  • Thyroid disorders
  • Smoking and drug abuse
  • Chronic diseases like diabetes and sleep apnea

Diagnosis

  • Electrocardiogram (ECG/EKG) – Records electrical activity of the heart.
  • Holter monitor – 24-hour continuous ECG recording.
  • Echocardiogram – Uses ultrasound to visualize the heart.
  • Electrophysiology study (EPS) – Assesses electrical pathways in the heart.

Treatment Options

1. Lifestyle Modifications

  • Reduce stress, avoid excessive caffeine/alcohol.
  • Adopt a heart-healthy diet, exercise regularly.

    2. Medications

  • Beta-blockers, calcium channel blockers for controlling heart rate.

  • Antiarrhythmic drugs to stabilize rhythms.
  • Anticoagulants (for AFib) to reduce stroke risk.

    3. Medical Procedures

  • Cardioversion – Electrical shock to reset rhythm.

  • Ablation therapy – Destroys abnormal electrical pathways.
  • Pacemaker – Device to stabilize heartbeat in bradycardia.
  • Implantable Cardioverter Defibrillator (ICD) – Prevents life-threatening arrhythmias.

Conclusion

Arrhythmias range from minor, harmless palpitations to severe life-threatening conditions. Early diagnosis and appropriate management reduce complications and improve quality of life. If you experience symptoms, consult a cardiologist for proper evaluation and treatment.

Source recommendations

1. American Heart Association Guidelines on 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://pubmed.ncbi.nlm.nih.gov/29084733/

2. European Society of Cardiology Guidelines on 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

Our advantages:

patient2376100
Best practices from USA, EU and Japan
Our answers to your questions are based on the clinical recommendations of countries with the most developed healthcare systems in the field of cardiology in the USA, the EU and Japan.
prescription18648039
Always up-to-date information
On a daily basis, we monitor for you all new scientific research publications in leading scientific journals on medical issues of interest to you.
We monitor all innovations and changes in the field of cardiac disease treatment on a daily basis.
fvfflf7q
Get second opinion
Here you can learn everything that even your doctor may not know about cardiology (if he does not speak English and he does not read 117 leading medical journals on cardiology every month).
1xr4duup
The most comprehensive and up-to-date collection of free cardiology materials
Our website contains the most comprehensive and up-to-date collection of free cardiology materials in your country.
Every 3-5 years, half of the scientific approaches to treatment in the field of cardiology are reviewed as a result of specialized scientific discoveries. With us, you don't have to wait these years to learn about the best ways to treat you and your loved ones.
arrow
Please register in order to receive information regarding possible complications and new approaches to treatment of cardiovascular diseases via email in our Newsletters.
arrow