Does sudden cardiac death relate to coronary heart disease?

Written by Xie Zhi Hong

Cardiology

Updated on November 12, 2024

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Some studies suggest that 70% of sudden cardiac deaths are caused by arrhythmias. Most of these arrhythmia-induced sudden deaths are associated with coronary artery atherosclerosis. Some are caused by acute myocardial infarction leading to sudden cardiac death. These are all caused by coronary heart disease. Therefore, sudden cardiac death is related to coronary heart disease. Thus, if coronary heart disease is suspected in a patient, it is crucial to perform early examinations and treatments to prevent the occurrence of myocardial infarction. Typical symptoms of coronary heart disease include intermittent chest tightness and chest pain, which can improve after a few minutes, and should therefore be taken seriously.

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Written by Chen Guang Yin

Cardiology

34sec

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Is sudden cardiac death hereditary?

The majority of sudden cardiac deaths are caused by acute and extensive myocardial infarction, with some caused by malignant arrhythmias. Coronary atherosclerotic heart disease has a genetic history. Patients with such a family history, especially those with early-onset heart disease family history—that is, a family history of heart disease before the age of 50—should be given high attention. Heart disease has a genetic predisposition, and since sudden cardiac death is a type of heart disease, it also has a genetic predisposition.

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Written by Chen Guang Yin

Cardiology

42sec

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What causes cyanosis of the face and lips in sudden cardiac death?

In patients with cardiogenic sudden death, we can see that their lips turn purple, commonly referred to as cyanosis of the lips. Similarly, their faces also turn purple. This primarily results from cardiac arrest caused by cardiogenic sudden death. Once the heart stops beating, the blood supply to the entire body, including the heart, brain, kidneys, peripheral vessels, face, skin, and fingers, is halted. This leads to a state of hypoxia. The purple discoloration (cyanosis) occurs because, after the heart stops, there is no blood flow and no oxygen exchange in the blood, ultimately leading to hypoxia.

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Written by Chen Guang Yin

Cardiology

46sec

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Precursors of cardiogenic sudden death during sleep

Before the onset of cardiac arrest during sleep, patients often exhibit symptoms of coronary heart disease such as chest tightness, shortness of breath, and palpitations. Often, these individuals do not pay enough attention to the symptoms, do not undergo timely medical examinations at a hospital, and consequently, there is a delay in the treatment of the condition. It is very unfortunate that sudden deaths occur during sleep, possibly due to fatigue, poor rest, and underlying heart disease, which then leads to cardiac arrest. The precursors of such events can vary from person to person; symptoms may include chest tightness and palpitations, among others. Therefore, it is important that we pay attention to these signs.

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Written by Li Hai Wen

Cardiology

53sec

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Does sudden cardiac death have a relationship with hypertension?

Sudden cardiac death and hypertension are related, with the most common cause of sudden cardiac death being acute myocardial infarction, which leads to malignant arrhythmias, such as ventricular fibrillation, resulting in sudden cardiac death. In addition, severe aortic dissection can also cause sudden cardiac death, and hypertension is often an important cause of coronary heart disease, acute myocardial infarction, and aortic dissection. Long-term hypertension can lead to the occurrence of arteriosclerosis, resulting in the formation of arterial plaques or aneurysms, such as those occurring in the coronary arteries, causing coronary heart disease and myocardial infarction, or in the aorta, often leading to the formation of aortic aneurysms. When an aortic aneurysm ruptures, it can cause aortic dissection.

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Written by Chen Guang Yin

Cardiology

47sec

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Is sudden cardiac death related to eating a large number of eggs?

Sudden cardiac death is mostly due to coronary artery atherosclerotic heart disease, where the patient suffers from a large myocardial infarction. This is directly related to atherosclerosis, rupture of atherosclerotic plaques, formation of thrombosis, and obstruction of the coronary arteries. Therefore, the foundation of this disease is primarily hyperlipidemia and arteriosclerosis. Eating a lot of eggs is certainly not beneficial for arteriosclerosis and hyperlipidemia. We believe that there is definitely a connection, but it is not the only factor. For example, high blood pressure, diabetes, smoking, drinking, and other poor lifestyle habits are all related to heart disease. Thus, eating eggs is just one of the risk factors.