Why does cardiogenic sudden death cause pallor throughout the body?

Written by Xie Zhi Hong

Cardiology

Updated on November 20, 2024

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Sudden cardiac death occurs due to heart thrombosis or heart failure caused by various reasons whereby the heart cannot supply blood, leading to death. Most people experience hypotensive shock, insufficient blood and oxygen supply to the body before dying, thus appearing pale, with low blood pressure, and even cyanosis, with cessation of breathing and heartbeat. Some individuals suffer from heart thrombus dislodging into the brain, causing cerebral arterial infarction. Such extensive cerebral infarctions can also lead to the cessation of heartbeat, resulting in insufficient blood and oxygen supply throughout the body, manifesting as pallor and cyanosis.

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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 Chen Guang Yin

Cardiology

52sec

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How to Self-Check for Precursors of Cardiogenic Sudden Death

The majority of cases of sudden cardiac death are due to coronary artery atherosclerotic heart disease, causing extensive myocardial infarction, hence these patients often have precursors. Some individuals experience acute coronary syndrome due to inflammatory changes, leading to thrombosis; others, such as young people without any underlying conditions, might also experience this, often due to poor lifestyle habits like high stress and lack of sleep among other triggers. Most patients exhibit warning signs, including chest tightness, chest pain, and palpitations – symptoms of heart disease. When these problems occur, it is crucial to promptly visit a hospital for examination to determine if there are issues with the coronary arteries, and if so, to receive timely treatment and intervention.

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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.

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Written by Xie Zhi Hong

Cardiology

1min 19sec

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Is sudden cardiac death an acute myocardial infarction?

Sudden cardiac death refers to a phenomenon where a variety of heart diseases cause acute death in patients, with the most common causes being malignant arrhythmias such as ventricular tachycardia, ventricular fibrillation, or severe bradycardia, primarily related to myocardial infarction. However, not all cases of sudden cardiac death are due to myocardial infarction; this condition generally accounts for about 70%. Other causes of sudden cardiac death include existing dilated cardiomyopathy, thyrotoxic cardiomyopathy, or severe terminal stenosis of the mitral or aortic valves, which can also lead to sudden cardiac death. Another scenario involves atrial fibrillation leading to atrial thrombosis, causing thrombus detachment and resulting in extensive cerebral infarction leading to sudden death; this is also classified as sudden cardiac death. Therefore, while the majority of sudden cardiac deaths are related to myocardial infarction and arrhythmias, not all sudden cardiac deaths are due to myocardial infarction.