Arrhythmia refers to what?

Written by Chen Ya

Geriatrics

Updated on September 23, 2024

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Arrhythmia refers to the abnormal origination or conduction of impulses in the heart due to abnormal activation of the sinoatrial node, slow conduction, blockages, or passage through abnormal pathways, leading to abnormalities in the frequency and/or rhythm of the heartbeat. Arrhythmias are a significant group of cardiovascular diseases. They can occur alone or in conjunction with other cardiovascular diseases. The prognosis of arrhythmias depends on their causes, triggers, trends in progression, and whether they lead to severe hemodynamic disturbances, potentially causing sudden death or continuous impairment of heart function leading to heart failure.

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Written by Chen Ya

Geriatrics

45sec

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Does arrhythmia cause nausea?

Mild arrhythmias, such as sinus bradycardia, sinus arrhythmia, occasional atrial premature contractions, and first-degree atrioventricular block, have minimal impact on hemodynamics, so they generally do not show obvious clinical symptoms. In cases of severe arrhythmias, such as sick sinus syndrome, rapid atrial fibrillation, paroxysmal supraventricular tachycardia, and sustained ventricular tachycardia, significant arrhythmias affect hemodynamics, reduce blood flow, and cause mesenteric artery spasm, which can lead to clinical manifestations of gastrointestinal ischemia, such as nausea, and even bleeding, ulcers, or paralysis.

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Written by Wei Shi Liang

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53sec

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Can arrhythmia be cured?

Arrhythmias come in many types, most of which are curable. Once arrhythmia occurs clinically, an electrocardiogram should be performed as soon as possible to determine the type of arrhythmia. Common arrhythmias can be classified into tachyarrhythmias and bradyarrhythmias, and based on the location of occurrence, into supraventricular arrhythmias and ventricular arrhythmias. Clinically common are supraventricular arrhythmias, such as sinus tachycardia, junctional tachycardia, along with atrial tachycardia, atrial fibrillation, and atrial flutter. These generally do not affect the stability of hemodynamics and are relatively easy to treat. On the other hand, ventricular arrhythmias such as ventricular fibrillation, ventricular tachycardia, and sinus arrest are clinically challenging to cure and require aggressive resuscitation.

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Written by Chen Ya

Geriatrics

45sec

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Why does arrhythmia cause chest pain?

The causes of chest pain due to arrhythmias primarily involve all kinds of arrhythmias reducing the blood flow in the coronary arteries. Although various arrhythmias can decrease coronary blood flow, they rarely cause myocardial ischemia. However, severe arrhythmias that cause significant myocardial ischemia can result in chest pain. For patients with coronary heart disease, various arrhythmias can induce or exacerbate myocardial ischemia, which may also manifest as chest pain and shortness of breath, and in severe cases, lead to acute heart failure, acute myocardial infarction, and persistent, unbearable chest pain and tightness.

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Written by Chen Ya

Geriatrics

58sec

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Does arrhythmia require hospitalization?

Arrhythmia treatment should be determined based on the patient's symptoms, type of arrhythmia, and its impact on hemodynamics. For instance, minor conditions like slight sinus bradycardia, irregular sinus rhythm, occasional atrial premature contractions, and first-degree atrioventricular block, which have minimal impact on hemodynamics and no significant clinical manifestation or structural heart disease, do not necessitate hospitalization. However, more severe arrhythmias such as sick sinus syndrome, rapid atrial fibrillation, paroxysmal supraventricular tachycardia, and sustained ventricular tachycardia, which can cause symptoms like palpitations, chest tightness, dizziness, low blood pressure, sweating, and in severe cases, fainting, Adam-Stokes syndrome, and even sudden cardiac death, require prompt medical attention and hospitalization for treatment.

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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.