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Herzrhythmusstörungwhen the heartbeat loses its rhythm.

An arrhythmia is a heartbeat that is too fast, too slow or irregular, caused by a problem in the heart's electrical system. Many are harmless; some need treatment. The key is recording the rhythm while it is happening.

At a glance

Often noticed as
Palpitations, dizziness or fainting
Confirmed with
An ECG and a Holter recording
Aim of care
Identify the rhythm and treat what matters
Followed up in
Allgemeine Kardiologie

Symptoms

Symptoms vary from person to person, and some people have none. These are the most common.

  1. Palpitations: racing, fluttering, thumping or skipping
  2. Dizziness or light-headedness
  3. Fainting, or nearly fainting
  4. Breathlessness
  5. Tiredness, especially with a slow heart rate

Causes and risk factors

  • Extra beats, often with caffeine, stress or poor sleep
  • Atrial fibrillation and other fast rhythms
  • Age-related wear of the heart's wiring, causing slow rhythms
  • Coronary artery disease, cardiomyopathy or valve disease
  • Thyroid problems and some medicines
  • Rarely, an inherited rhythm condition

How it is diagnosed

The diagnosis starts with your history and an examination. These are the tests most often used to confirm it.

How it is managed

  1. Record the rhythm

    An ECG, a Holter monitor or a smartwatch recording during symptoms shows what the rhythm really is.

  2. Reassurance, when it is harmless

    Many palpitations are extra beats that need no treatment once the heart is shown to be healthy.

  3. Medicines

    Medicines can slow a fast heart or prevent episodes.

  4. Procedures, when needed

    Ablation for some fast rhythms, or a pacemaker for slow ones, is arranged by referral.

General information, not a treatment plan. Your treatment is decided with you after an assessment.

Get emergency help now if you have

Call emergency services or go to the nearest emergency department. Do not wait for a clinic appointment.

  • Fainting, especially during exercise
  • Palpitations with chest pain
  • Severe breathlessness with a racing heart
  • A very fast heartbeat that does not settle with rest

Common questions

What if my heart is normal when I am in clinic?

That is common. A Holter monitor records over one or more days, and a smartwatch or phone ECG taken during an episode is very useful, so bring it with you.

Are palpitations dangerous?

Most are harmless extra beats. They are worth checking if they are frequent, come with fainting or chest pain, or you already have a heart condition.

Can I drink coffee?

In moderation, usually yes. If caffeine clearly triggers your symptoms, cutting down is sensible.

Other conditions

All conditions

Living with this, or worried you might be?

Book a consultation or send a question on WhatsApp. Your history, results and treatment are reviewed in person, and the plan is explained to you before you leave.

This page explains a condition in general terms. It cannot diagnose you or replace an examination, and it is not a treatment plan. Do not change or stop a medicine without talking to your doctor. If your symptoms are severe, sudden or happening now, seek emergency care immediately.

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