The healthy old man died suddenly.

Hello! First of all, I wish you good health! According to you, consider the problem of "sudden death".

Sudden cardiac death in summer has become the most dangerous "killer", and cardiovascular diseases have ranked first in the incidence of adult diseases in this city. The day before yesterday, the professor of cardiology sounded the alarm for the public at the summer heart defense meeting of Nanjing Health Lecture Hall "Heart Olympics" sponsored by Health Weekly. He pointed out that in the case of sultry summer and emotional instability, chest tightness and chest pain suddenly appeared, especially when the eyes were black, indicating that there may be problems with the heart, so we should pay close attention to diagnosis and treatment.

Every summer, cardiovascular patients will become the "main force" of the hospital. Recently, Nanjing Chest Hospital, Qinhuai District Geriatric Hospital and many other cardiologists have taught the public how to prevent cardiovascular diseases in summer.

According to statistics, the following six categories of people should be especially careful in hot weather to prevent sudden cardiac death:

1. First of all, the incidence of sudden cardiac death is three times that of women.

2. The second category is people with basic heart disease.

3. The third category is athletes, whose long-term physical load is relatively heavy, which will lead to changes in the heart and easy to lead to sudden death.

4. The fourth category is the elderly, especially those who stay in bed for a long time, who are prone to thrombosis and sudden death.

5. The fifth category is entrepreneurs, whose workload is relatively large, which easily leads to long-term nervous excitement.

6. In addition, in some special circumstances, such as atrial fibrillation, it will also lead to sudden death of patients. The best first aid time for sudden cardiac death is within 4 minutes. With every delay of 1 min, the survival rate will decrease by 1%.

If you are satisfied with the above answer, please don't disappoint my kindness and adopt it as an answer in time.