Does the weather have a great influence on cardiovascular and cerebrovascular diseases? Could it be a stroke?

Influence of seasons on cardiovascular and cerebrovascular diseases

The incidence of acute myocardial infarction is higher in cold season, and sudden cardiac death is more likely to occur in cold winter. This is closely related to the frequent cold air activities. Under the influence of cold air, the temperature drops, the air pressure rises, the peripheral blood vessels contract, the blood flow resistance increases, and the blood pressure rises. Moreover, under the stimulation of cold, the secretion of catecholamine increases, which is easy to lead to vasospasm, plaque rupture, platelet aggregation and thrombosis, and easily lead to cardiovascular and cerebrovascular diseases.

In spring, the weather is cold and hot, the temperature difference between day and night is large, and the blood vessels contract strongly, which leads to large fluctuations in blood pressure and has adverse effects on the heart and brain. Coupled with the increase in activity, the tolerance of blood vessels is temporarily unsuitable, which will induce the attack of cardiovascular and cerebrovascular diseases.

Elderly patients with cardiovascular diseases are also vulnerable to the influence of high temperature in summer and die. The weather is hot in summer, and the elderly are not sensitive to water shortage such as temperature change or sweating. If water is not replenished in time, the blood viscosity will increase, which will lead to cerebral thrombosis or myocardial infarction.

2. Short-term effects of climate change on cardiovascular and cerebrovascular diseases.

The occurrence of cardiovascular and cerebrovascular diseases has a significant relationship with the rapid changes of temperature and pressure. When the temperature suddenly rises or falls, the number of elderly patients in the emergency department and cardiovascular and cerebrovascular department of the hospital always increases. The highest temperature in April and May this year reached above 25 degrees, and then suddenly dropped to around 10 degrees, or even lower. The self-regulation mechanism of the elderly sometimes can't keep up with the sudden change of climate, which leads to an increase in the incidence of cardiovascular and cerebrovascular diseases, especially those elderly patients with potential lesions, whose arteriosclerosis, vascular elasticity decline, and various organ functions,