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

38sec

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Will there be any sequelae from cardiogenic sudden death?

So, sudden cardiac death is firstly a sudden event. Whether there are sequelae depends greatly on whether timely rescue was administered at the time of the cardiac arrest. If effective cardiopulmonary resuscitation is given within a short time, generally within 4-6 minutes, then the patient's vital signs including consciousness might gradually recover, and it's possible that no severe sequelae will remain. However, if the rescue is not timely, it's possible for the heartbeat and breathing to be restored but not consciousness, leading to brain death and a vegetative state. This is a possibility.

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Written by Xie Zhi Hong

Cardiology

1min 14sec

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The difference between sudden cardiac death and myocardial infarction.

Sudden cardiac death refers to the sudden death of a patient caused by various heart diseases. The most common causes include malignant arrhythmias such as ventricular fibrillation and ventricular tachycardia, severe bradycardia, significant valvular dysfunction, or the sudden occlusion of the coronary arteries leading to death. Myocardial infarction, on the other hand, refers to the sudden cessation of blood supply to the heart vessels, causing myocardial death and leading to arrhythmias or valvular dysfunction, which presents a range of symptoms in patients. Myocardial infarction can result in death in 30% of patients, but with medical intervention, the mortality rate can significantly decrease. Therefore, in cases of sudden cardiac death, the patients are already deceased. However, the mortality rate from myocardial infarction under natural circumstances is relatively high, reaching 30%. With current medical interventions, the rate of mortality due to sudden cardiac death can be reduced to less than 10%.

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Written by Zhang Yue Mei

Cardiology

52sec

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Does sudden cardiac death have a connection with overwork?

Sudden cardiac death is directly related to overexertion, particularly in individuals with coronary heart disease, congenital heart disease, rheumatic heart disease, viral myocarditis, and heart rhythm disorders, especially those accompanied by heart failure. Excessive strain can increase the burden on the heart, exacerbate heart failure, lead to arrhythmias, and in severe cases, result in sudden death. Therefore, patients with structural heart disease must follow a doctor's guidance to routinely use effective medications for treatment, rest adequately, avoid overexertion, and maintain a low-fat, low-salt diet to minimize factors that increase cardiac load and prevent the occurrence of sudden death.

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Written by Chen Guang Yin

Cardiology

40sec

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Does cardiogenic sudden death cause vomiting blood?

Of course, sudden cardiac death is now a very common cause of death. At places like airports and bus stations, we often see reports of such incidents, and many young people are also affected. However, patients experiencing sudden cardiac death generally do not present with symptoms of vomiting blood, as it is caused by cardiac arrest. Vomiting blood is usually associated with conditions such as gastric ulcers leading to severe bleeding, gastric cancer, or cirrhosis leading to rupture of varicose veins at the base of the stomach. The likelihood of vomiting blood occurring in cases of sudden cardiac death is very low, almost nonexistent.