What causes premature ventricular contractions?

Written by Zhang Yue Mei
Cardiology
Updated on September 11, 2024
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Ventricular premature beats are the most common type of premature beats clinically, and they mostly occur in healthy people, also known as benign premature beats. They are caused by unstable autonomic nerve function leading to arrhythmia and do not require treatment with anti-arrhythmic drugs. Treatment through regulating nerves and lifestyle can lead to improvement. They can also occur in organic heart diseases, such as coronary heart disease, rheumatic heart disease, pulmonary heart disease, and viral myocarditis. These organic heart diseases, due to long-term myocardial damage, exhibit ectopic rhythms and require treatment with effective anti-arrhythmic drugs alongside treatment of the primary disease (the use of such drugs should be under the guidance of a physician).

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Written by Chen Tian Hua
Cardiology
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What are the dangers of ventricular premature beats?

The hazards of ventricular premature beats can be mainly divided into the following aspects: First, if a healthy person experiences ventricular premature beats, it can cause symptoms such as chest tightness, palpitations, fatigue, and dizziness. If these symptoms are quite noticeable, they often affect the patient's work and life, and at night, they can also impact sleep, leading to sleep deprivation; Second, if the patient has severe structural heart disease, frequent ventricular premature beats can induce angina attacks in patients with coronary artery disease, and can lead to worsening of heart failure in patients suffering from heart failure; Third, some malignant ventricular premature beats can also induce severe rapid malignant arrhythmias, such as sustained ventricular tachycardia and ventricular fibrillation, leading to sudden cardiac arrest and sudden cardiac death.

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Written by Li Hai Wen
Cardiology
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The harms of ventricular premature beats in triplets

Ventricular premature beats in a trigeminal pattern are a commonly seen arrhythmia in everyday life. On an electrocardiogram, this arrhythmia typically presents as two normal heartbeats followed by one premature ventricular contraction. This pattern recurs repeatedly and is referred to as ventricular premature beats in a trigeminal pattern. When this occurs, many patients may feel palpitations or a pounding heart, or experience chest tightness. Generally, if there is no structural heart disease present in the patient, this type of premature beat is not hazardous and does not warrant concern.

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Written by Chen Tian Hua
Cardiology
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Frequent ventricular premature beats refer to what?

Frequent ventricular premature beats refer to the occurrence of more than five ventricular premature beats per minute. Ventricular premature beats, also known as ventricular premature contractions, can occur in patients without structural heart disease, as well as in those with structural heart disease. For frequent ventricular premature beats occurring on the basis of structural heart disease, it is necessary to actively treat the underlying heart disease. Some ventricular premature beats can also be treated with radiofrequency ablation surgery to reduce their occurrence. In daily life, it is important to maintain a healthy lifestyle, reasonably plan work and life activities, reduce mental stress, avoid extreme emotional fluctuations, avoid overwork and staying up late, and ensure sufficient sleep.

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Written by Chen Tian Hua
Cardiology
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Ventricular premature beat

Ventricular premature beats refer to heartbeats that occur prematurely below the bifurcation of the bundle of His, causing early depolarization of the myocardium; they are a common arrhythmia in clinical settings. Ventricular premature beats can occur in healthy individuals and may be triggered by factors such as fatigue and staying up late, excessive smoking and drinking, excessive mental stress, and consuming strong tea and coffee. They can also be seen in organic heart diseases such as coronary artery disease, heart failure, hypertensive heart disease, myocarditis, and cardiomyopathy. For ventricular premature beats, it is crucial to actively remove the related triggers. If accompanied by organic heart disease, it is necessary to actively control the underlying disease.

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Written by Chen Tian Hua
Cardiology
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Are frequent ventricular premature beats serious?

Frequent ventricular premature beats can be serious depending on the specific circumstances; some cases are more severe, while others are not. If the frequent ventricular premature beats occur on the basis of severe heart diseases such as severe heart failure, acute myocardial infarction, or are caused by severe hypokalemia, these cases of frequent ventricular premature beats are relatively severe. They carry the risk of progressing to malignant arrhythmias leading to sudden cardiac death, thus requiring prompt and active management to prevent adverse outcomes. In healthy individuals, frequent ventricular premature beats triggered by factors such as staying up late or fatigue are generally not serious. They can quickly recover with adequate rest and sufficient sleep.