Premonitory signs of a sudden heart attack

Written by Cai Li E
Cardiology
Updated on May 14, 2025
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Sudden heart disease primarily refers to the sudden onset of acute myocardial infarction. Between 50% to 81.2% of patients have prodromal symptoms, experiencing significant chest discomfort, fatigue, palpitations during activity, shortness of breath, irritability, and angina in the days before the onset, with the most prominent being new or worsening angina. The angina is more frequent than before, more severe, lasts longer, and nitroglycerin relief is not significantly apparent; the triggers are also unclear. Sometimes, gastrointestinal symptoms such as nausea, vomiting, and upper abdominal bloating occur and are often misdiagnosed, causing delays in treatment.

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Written by Xie Zhi Hong
Cardiology
54sec home-news-image

The difference between hyperthyroid heart disease and heart disease.

Heart disease includes all phenomena of heart dysfunction caused by various reasons, which can collectively be referred to as heart disease. This includes arrhythmias, heart failure, and changes in the cardiac vessels, such as coronary heart disease, coronary artery bridging, and congenital heart disease, all of which are termed heart disease. Hyperthyroid heart disease, on the other hand, is caused by a long period of uncontrolled or untreated hyperthyroidism, leading to changes in heart function and structure. It manifests as palpitations, panic, and severe decline in heart function. It is merely one type of heart disease, representing the changes in the heart caused by hyperthyroidism, and is just a small category of heart disease.

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Written by Xie Zhi Hong
Cardiology
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Is hyperthyroid heart disease dangerous?

Hyperthyroidism can repeatedly cause an increase in heart rate and metabolism, which is quite active, causing a long-term overload of heart function, leading to the formation of hyperthyroid heart disease, a chronic pathological change process. In the middle and early stages, it generally does not pose a life-threatening risk, only manifesting symptoms such as palpitations, tightness after activity, breathlessness, or chest tightness, which can improve with rest. However, if hyperthyroidism is not cured for a long time, or if hyperthyroid heart disease is not treated in time, it can lead to severe heart failure. If there is a severe decline in heart pump function, causing the ejection fraction to be below 30%, it can easily cause sudden pump failure or severe arrhythmias, such as ventricular tachycardia or fibrillation, posing a life-threatening risk to the patient.

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Written by Yan Xin Liang
Pediatrics
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Is congenital heart disease heart cancer?

Congenital heart disease primarily refers to the abnormal development of the heart and blood vessels during the fetal period, leading to cardiovascular malformations. It is the most common type of heart disease in children, with an incidence rate of about 6-8 per 1,000 live births. Generally, congenital heart disease refers to malformations during the development of the fetal heart. The exact causes of this condition are still not completely understood. However, actively preventing viral infectious diseases in the early stages of pregnancy and avoiding certain high-risk factors associated with the disease play a significant role in preventing congenital heart disease in children. It should be noted that congenital heart disease represents malformations in the development of the heart and is not a form of heart cancer, hence there is no terminology that describes it as such.

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Written by Zhang Yue Mei
Cardiology
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How do you get heart disease?

There are many causes of heart disease, the most common being coronary atherosclerotic heart disease, which is due to long-term hyperlipidemia leading to arteriosclerosis. After the coronary arteries harden, the lumen narrows, resulting in insufficient myocardial blood supply and the onset of coronary heart disease. Rheumatic heart disease occurs when the body is infected with streptococcus and does not receive adequate treatment, leading to an abnormal immune response that attacks the heart valves, causing valve damage. Pulmonary heart disease is caused by long-term insufficient ventilation leading to emphysema, and pulmonary hypertension increases the resistance on the heart, causing right ventricular hypertrophy.

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Written by Zhang Yue Mei
Cardiology
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What foods should people with heart disease eat?

Patients with heart disease should adopt a diet that is low in fat, salt, and oil in their daily lives, and they should try to eat more fruits and vegetables that are high in vitamins, trace elements, and dietary fiber. They can frequently eat foods such as sea cucumber, eggs, milk, beef tendon, lean meat, rabbit meat, belt fish, yellow croaker, shrimp, and others that contain a good amount of high-quality protein needed by the human body, and have lower cholesterol. Continuous consumption over time can enhance the body's immunity and disease resistance.