Causes of arrhythmia

Written by Zhang Yue Mei

Cardiology

Updated on September 24, 2024

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Arrhythmia is a common and frequently occurring disease in clinical practice, primarily caused by various organic heart diseases. Common heart diseases include coronary heart disease, congenital heart disease, rheumatic heart disease, pulmonary heart disease, severe myocarditis, and cardiomyopathy, all of which can lead to arrhythmias that are generally severe. Arrhythmias can also occur in some healthy individuals due to instability of the autonomic nervous system. This type of arrhythmia can be clinically cured through lifestyle adjustments, appropriate exercise, and improvements in myocardial contractility and conductivity.

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Written by Zhou Yan

Geriatrics

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Can arrhythmia be cured?

There are many types of arrhythmia, some of which, like sinus tachycardia, sinus bradycardia, occasional premature atrial contractions, premature ventricular contractions, and premature junctional contractions, can also occur in healthy individuals and usually do not require treatment. Another category requires treatment, such as supraventricular tachycardia, including atrioventricular nodal reentrant tachycardia, which can be cured by radiofrequency ablation. Additionally, conditions like atrial fibrillation can be treated with radiofrequency ablation; many patients may be cured, but some may not respond to this treatment and require medication instead. There are also patients with intrinsic structural heart disease presenting various arrhythmias that can only be managed with medication, not cured.

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Written by Zhang Yue Mei

Cardiology

46sec

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Causes of arrhythmia

Arrhythmia is a common and frequently occurring disease in clinical practice, primarily caused by various organic heart diseases. Common heart diseases include coronary heart disease, congenital heart disease, rheumatic heart disease, pulmonary heart disease, severe myocarditis, and cardiomyopathy, all of which can lead to arrhythmias that are generally severe. Arrhythmias can also occur in some healthy individuals due to instability of the autonomic nervous system. This type of arrhythmia can be clinically cured through lifestyle adjustments, appropriate exercise, and improvements in myocardial contractility and conductivity.

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Written by Chen Ya

Geriatrics

1min

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Can arrhythmia cause sudden death?

The clinical manifestations of hemodynamic changes caused by arrhythmias mainly depend on the nature, type, cardiac function, and the extent of impact on hemodynamics. Mild conditions such as slight sinus bradycardia, sinus arrhythmia, occasional atrial premature contractions, and first-degree atrioventricular block have minimal impact on hemodynamics and therefore do not exhibit significant clinical manifestations, and sudden death is generally not expected. However, more severe arrhythmias, such as sick sinus syndrome, rapid atrial fibrillation, paroxysmal supraventricular tachycardia, and sustained ventricular tachycardia, can lead to palpitations, chest tightness, dizziness, hypotension, and sweating. In severe cases, syncope, Adams-Stokes syndrome, or even sudden death may occur.

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Written by Chen Ya

Geriatrics

1min 4sec

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Do arrhythmias need treatment?

The treatment of arrhythmias should be based on the symptoms of the patient, the type of arrhythmia, and its impact on hemodynamics to determine if treatment is necessary. For instance, mild sinus bradycardia, irregular sinus rhythm, occasional atrial premature contractions, and first-degree atrioventricular block have minimal impact on hemodynamics. Therefore, if there are no obvious clinical symptoms and no cardiac structural disease, temporary drug treatment may not be required. However, severe arrhythmias such as sick sinus syndrome, rapid atrial fibrillation, paroxysmal supraventricular tachycardia, and persistent ventricular tachycardia can cause palpitations, chest tightness, dizziness, low blood pressure, severe sweating, and in severe cases, syncope, Adams-Stokes syndrome, or even sudden death, which require immediate medical attention.

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Written by Chen Ya

Geriatrics

1min 28sec

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Arrhythmia is caused by what?

Arrhythmia is caused by abnormal excitation of the sinoatrial node or excitation originating outside the sinoatrial node, with slow conduction, blockage, or conduction through abnormal pathways. This results in the frequency and (or) rhythm abnormalities of heartbeats, which are collectively referred to as arrhythmias. Most of the causes include the following: one is genetic arrhythmias, often due to gene channel mutations, such as the commonly seen long QT syndrome, short QT syndrome, Brugada syndrome, etc. There are also acquired arrhythmias, seen in various organic heart diseases, including coronary atherosclerotic heart disease, commonly referred to as coronary heart disease, cardiomyopathy, myocarditis, and rheumatic heart disease, particularly prevalent during heart failure or acute myocardial infarction. Arrhythmias are also not uncommon in basically healthy individuals or patients with autonomic dysfunction. Other causes include electrolyte imbalance or endocrine disorders, and sometimes anesthesia, hypothermia, or surgery, such as thoracic or cardiac surgery, or medications, central nervous system diseases may also cause arrhythmias, but the specific reasons are not very clear.