Stroke is also prone to occur in autumn and early spring. Because this festival is most vulnerable to cold current, cold current attacks, and the temperature drops suddenly, the difference between the highest temperature and the lowest temperature in a day is too big. For those who have just spent the hot summer or just felt the warmth of spring, the sudden change of climate will make them uncomfortable, and it will also bring disaster to the elderly and people with high risk factors of stroke.
Many doctors have this experience. When the temperature drops suddenly, streets and shopping malls will appear deserted, but hospitals are just the opposite. At this time, the number of emergency room patients increased significantly, and the number of patients with cerebral hemorrhage and cerebral thrombosis increased significantly than usual.
Why does climate change affect the occurrence of stroke? In cold environment, peripheral blood vessels contract, peripheral resistance increases and blood pressure increases. Cold can also increase fibrin in snow and increase blood viscosity, which is easy to cause thrombosis. Especially in the sleep state, the blood flow is slow, and if the indoor temperature is low, cerebral thrombosis is more likely to occur. When the temperature changes suddenly, these physiological reactions are more intense, and blood pressure fluctuates obviously, which is easy to make some elderly people and people with stroke risk factors have a stroke.
Stroke is not only related to temperature change, but also to air pressure and relative humidity. High air pressure, low humidity and low temperature in winter are often related to cerebral hemorrhage; In summer, low air pressure, high humidity and high temperature are prone to cerebral thrombosis. agree