Cardiac Arrhythmias

The heart normally has a well-controlled electrical system that regulates its rhythm. However, any issue within this system can cause a heart rhythm disorder. These disorders can result in symptoms such as palpitations, dizziness, tiredness, fainting, chest pains, or shortness of breath. Some more unusual symptoms include anxiety, insomnia, mood swings, or even abdominal pain.

Heart rhythm disorders may be caused by an electrical "short-circuit" within the heart or by "trigger happy" cells. They may also be due to other medical conditions such as heart attacks, aging, or scarring in the heart. In some cases, individuals may be born with an abnormal electrical pathway.

It is essential to consult your doctor if you experience any symptoms that may be a heart rhythm disorder. Your doctor will work with you to help diagnose and treat the problem. If you're experiencing any heart rhythm disorder symptoms, Dr. Hsieh would be happy to help. As a healthcare provider with expertise in this area, he can provide you with a thorough evaluation, personalised treatment plan, and ongoing support to help manage your condition effectively.

Picture of ablation of outflow tract ventricular tachycardia (RVOT)

Common types of cardiac arrhythmias

  • AVJRT/AVRT

    These arrhythmias result from small gaps in the electrical insulation within the heart between the atria (top chambers) and ventricles (bottom chambers). This can lead to electrical short-circuits between these chambers.

  • Atrial tachycardia

    This is a rhythm problem caused by a few cells in the atria becoming "trigger-happy."

  • Atrial flutter

    This rhythm disorder is caused by the formation of a large electrical circuit within the atria, leading to an electrical short-circuit. Atrial flutter often responds poorly to treatments other than catheter ablation.

  • Outflow tract ventricular tachycardia

    This occurs due to "trigger-happy" cells in the ventricles, usually in the area where blood flow is leading out of the heart.

  • Ischaemic or scar-related ventricular tachycardia

    In patients with a history of heart attack (infarction) or previous cardiac surgery, abnormal electrical circuits within the ventricles can lead to potentially dangerous rhythms.

  • Cardiomyopathy-related ventricular tachycardia

    This is an uncommon condition where areas of the heart are damaged, but not due to a heart attack, which can lead to dangerous rhythm problems associated with abnormal electrical circuits within the ventricles.

Dr Hsieh discusses cardiac rhythms and cardiac rhythm management

Procedures

Electrophysiology study

An electrophysiology study is a procedure that typically lasts between 30 minutes to 4 hours and is performed to closely examine the electrical properties of your heart. By conducting this test, Dr. Hsieh can better evaluate your arrhythmia and determine how it may impact your future health. This study is considered to be the most accurate and reliable method for evaluating heart rhythms, and it helps to establish treatment options that are best suited for your individual needs.

Minimally invasive catheter ablation

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Atrial fibrillation

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Cardiac pacemakers