Should the common sense of the older generation be believed?
Hunan has been experiencing high temperatures for several days. On the night of July 14, a 24-year-old man from Xiangjiang River in Zhuzhou suddenly fell to the ground while playing basketball outdoors. Witnesses said at the scene, “The weather was hot at the time. He played three or four groups and sat down. I didn’t walk around the court and drank ice water. I didn’t expect an accident.” The doctor reminded that high temperature is also a major cause of sudden death in summer, and the age group of sudden death has shown a younger trend. So what can cause sudden exercise death? How to avoid sudden exercise-induced death?
There may be many reasons for this man’s sudden death, but ice water is definitely not the main factor. It is currently speculated that the cause of death in this case may be related to high temperature and high-intensity exercise. These will greatly increase the body, especially the heart burden. In addition to the initial factors, the case itself must be considered. There are many possibilities for sudden death, such as coronary heart disease, hereditary arrhythmia, cerebral hemorrhage, pulmonary embolism and even bronchial asthma. Among them, sudden cardiac death has the largest proportion, accounting for 80% of non-accidental sudden deaths. In sudden cardiac death, about 5-25% of sudden cardiac death is caused by hereditary arrhythmia. However, the incidence of sudden cardiac death (SCD) in adolescents (3-25 years old) is very low, and there is no effective clinical data statistics in China. However, unlike the common cause of SCD in the elderly, ischemic heart disease, the cause of SCD in adolescents is more complicated. The top three common causes are organic heart disease, coronary artery abnormalities and hereditary arrhythmia syndromes.  Many of these are related to genetic inheritance. For example, in organic heart disease, the common arrhythmogenic right ventricular cardiomyopathy is a hereditary cardiomyopathy, which is one of the common causes of sudden death in adolescents and athletes. Others include dilated cardiomyopathy, hypertrophic cardiomyopathy, etc. In addition to this, hereditary primary arrhythmia is also one of the causes of adolescent SCD. This kind of disease is generally caused by gene mutations that cause ion channel dysfunction, and then a type of genetic disease in which abnormal electrical activity of the heart occurs. It has obvious familial clustering. Among the more common ones are long QT syndrome (LQTS), Brugada syndrome, pre-excitation syndrome, catecholamine-sensitive ventricular tachycardia and so on. The above may be the causes of sudden cardiac death that people usually don’t pay much attention to, especially for young people under the age of 25, the risk of sudden death still exists. At the same time, these can be heritable, especially hereditary. Primary arrhythmia is common in familial inheritance and cluster seizures and so on. Most of hereditary arrhythmias are autosomal dominant inheritance. If one parent is a patient, the child’s probability of getting the disease is 50%. So, seriously, if you have a history of related medical conditions in your family, especially if you have a history of multiple people, or have a clear genetic type of arrhythmia, it is highly recommended to do some genetic tests, especially those who like Marathon runners, those who love to stay up late, and those who like to drink big drinks. Many arrhythmias cannot be found in the hospital by an electrocardiogram, because if there is no attack, there will be no symptoms, and the attack may disappear.