Causes and Treatment of Bradycardia

Written by Chen Ya
Geriatrics
Updated on September 05, 2024
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Bradycardia can be seen in healthy individuals, especially athletes, and also during sleep. If caused by a pathological condition, there may be organic heart disease, particularly in patients with acute myocardial infarction. If such a condition causes a significant decrease in cardiac output, affecting the blood supply to vital organs such as the heart, brain, and kidneys, then drugs like atropine or even intravenous drip of isoproterenol are used to increase the heart rate. Oral theophylline may be considered under general conditions. For severe sinus bradycardia leading to syncope where drug treatment is ineffective, it is recommended to install a permanent artificial cardiac pacemaker to prevent sudden sinus arrest.

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Written by Chen Tian Hua
Cardiology
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Causes and Hazards of Bradycardia

The main causes of bradycardia include the following: 1. Physiological bradycardia, which occurs in normal individuals such as athletes and some elderly people, mainly due to increased vagal tone; 2. Cardiac diseases, such as sick sinus syndrome, severe atrioventricular block, myocarditis, and acute inferior myocardial infarction; 3. Other diseases, such as hypothyroidism and hyperkalemia. Physiological bradycardia generally poses no harm and does not require intervention. Pathological bradycardia, when the heart rate significantly slows down, can lead to a decrease in cardiac output, causing insufficient blood supply to the brain, resulting in symptoms such as dizziness, visual obscurity, and fainting. It can also cause coronary artery supply insufficiency leading to angina, as well as symptoms of fatigue and reduced exercise tolerance, requiring timely treatment.

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Written by Zhou Yan
Geriatrics
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What is bradycardia?

Bradycardia generally refers to a heart rate of less than 60 beats per minute, often seen in healthy young people, athletes, and during sleep. Other possible causes include hypothyroidism, obstructive jaundice, as well as severe hypoxia and hypothermia. If the patient's bradycardia does not cause other pathological conditions, such as dizziness or fainting, it generally does not require treatment. If severe dizziness and fainting occur, indicating insufficient cardiac output, medications that increase the heart rate, such as atropine or aminophylline, can be used. (These medications should be taken under the guidance of a doctor.)

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Written by Chen Tian Hua
Cardiology
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How to treat bradycardia

People with bradycardia should maintain good habits in daily life, eat a light diet, exercise reasonably, avoid overwork and staying up late, refrain from smoking and drinking, and keep a relaxed mood. Medications such as Xinbao Pills can be taken to increase the heart rate. Additionally, consuming traditional Chinese medicines like ginseng can also help in increasing the heart rate. For severe bradycardia that causes repeated symptoms like dizziness, visual obscurity, or fainting, and even episodes of Adams-Stokes syndrome, such as sick sinus syndrome or third-degree atrioventricular block, it is crucial to promptly visit a hospital. Active pacing treatment should be administered to increase the patient's heart rate, in order to prevent sudden cardiac arrest and avoid sudden cardiac death.

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Written by Chen Tian Hua
Cardiology
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What are the dangers of bradycardia?

If the bradycardia is physiological, it generally does not harm the body and does not require special treatment. If the bradycardia is pathological, when the heartbeat significantly slows down, it can cause a decrease in cardiac output due to the slow heart rate, leading to symptoms of insufficient cardiac output, insufficient blood supply to the brain which can cause dizziness, visual disturbance, fainting, and other symptoms. Insufficient coronary artery supply can induce angina, and insufficient perfusion of the kidneys can lead to reduced urine output and kidney damage. Therefore, if a patient with bradycardia has a slow heart rate that leads to obvious symptoms, it is necessary to install a pacemaker for pacing treatment to increase the heart rate.

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Written by Chen Ya
Geriatrics
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Causes and Treatment of Bradycardia

Bradycardia can be seen in healthy individuals, especially athletes, and also during sleep. If caused by a pathological condition, there may be organic heart disease, particularly in patients with acute myocardial infarction. If such a condition causes a significant decrease in cardiac output, affecting the blood supply to vital organs such as the heart, brain, and kidneys, then drugs like atropine or even intravenous drip of isoproterenol are used to increase the heart rate. Oral theophylline may be considered under general conditions. For severe sinus bradycardia leading to syncope where drug treatment is ineffective, it is recommended to install a permanent artificial cardiac pacemaker to prevent sudden sinus arrest.