Core Insights - The article highlights the increased risk of cerebrovascular diseases during both cold and hot seasons, emphasizing that high temperatures can also trigger conditions like ischemic stroke, particularly when temperatures exceed 33°C [1][3] Group 1: Health Risks - A significant rise in the incidence of cerebrovascular diseases is observed when temperatures surpass 33°C, with ischemic stroke being particularly prominent [1] - The risk of cardiovascular diseases is exacerbated by the temperature difference between air-conditioned environments and outdoor heat, especially when the difference exceeds 7°C [3] - High temperatures can lead to dehydration, reducing blood volume and increasing blood viscosity, which heightens the risk of stroke [3] Group 2: Vulnerable Populations - High-risk groups for stroke include individuals with pre-existing cerebrovascular conditions, the elderly with vascular hardening, and younger individuals with unhealthy lifestyles [3][4] - The article stresses the importance of recognizing risk factors for stroke prevention, including maintaining hydration and avoiding extreme temperature fluctuations [4] Group 3: Emergency Response - Immediate action is crucial when a stroke occurs, including moving the individual away from extreme temperatures and ensuring clear breathing [4] - The critical window for treatment is between 4.5 to 6 hours post-stroke onset, where timely interventions can significantly reduce disability rates [4]

全国高温健康风险预警连续发布 央视网消息：眼下，今年以来最强高温过程正影响我国多地。中央气象台7月5日早6点继续发布高温黄色预警：预计5日白天，华北南部、 黄淮、江淮、江汉、江南大部、四川东北部、重庆、华南大部以及新疆南疆盆地和准噶尔盆地等地有35℃以上的高温天气。其中，新疆南疆盆 地、河北南部、山东、河南、安徽、江苏、上海、湖北、湖南东部和北部、江西、浙江中西部、福建西北部、重庆、广东北部、广西北部等地 部分地区最高气温37—39℃，新疆吐鲁番盆地、山东北部、河南中北部、浙江西北部、苏皖南部等地局地可达40℃以上。 那么，在高温环境下，我们应如何快速判断自己或他人是否中暑或已经引发热射病了呢？又该采取哪些急救措施？来看医生的解答。 中国医科大学附属第一医院急诊科主任崇巍称："若在高温高湿环境下暴露30分钟以上，出现头晕、口渴、乏力这些先兆症状，伴随体温 升高38℃以上，有皮肤灼热、意识模糊等表现，这就确定已中暑。一旦发现有人中暑，首先要将患者迅速脱离高温、高湿环境，转移至通风阴 凉处。" 中暑症状进一步发展，还可能引发热射病。热射病的典型表现为体温高于40℃、意识模糊、无汗、抽搐、心率过快等。此时应立即将患 ...

Core Viewpoint - Stroke, commonly known as cerebrovascular accident, is a leading cause of death and disability among residents in China, with high temperatures also posing a significant risk for stroke occurrence [1][2]. Group 1: Stroke Types and Risks - Stroke is categorized into ischemic and hemorrhagic types, with acute ischemic stroke (acute cerebral infarction) accounting for approximately 70% of cases [3]. - High temperatures, particularly above 32°C, significantly increase the risk of stroke, with the danger escalating as temperatures rise [1][4]. Group 2: Factors Contributing to Stroke in High Temperatures - Dehydration: High temperatures lead to excessive sweating and fluid loss, increasing blood viscosity and slowing blood flow, which raises the risk of ischemic stroke [4]. - Blood Pressure Fluctuations: Heat causes blood vessels to dilate, potentially lowering blood pressure, but can also lead to erratic blood pressure changes due to environmental stressors, increasing the risk of hemorrhagic stroke [4]. - Thermoregulation Burden: The body's effort to cool down increases heart rate and cardiac workload, which may affect cerebral blood supply [4]. Group 3: Recognizing and Responding to Stroke - Early warning signs include dizziness and limb numbness, which are critical indicators of a potential stroke [5]. - The "120 Rule" for quick identification of stroke symptoms involves observing facial symmetry, checking arm strength, and listening for clear speech [6]. Group 4: Common Missteps in Emergency Response - Avoid moving the patient abruptly, as this can worsen bleeding [8]. - Do not shout at the patient, as loud noises can elevate blood pressure and exacerbate the condition [9]. - Refrain from administering medication without a clear diagnosis, as incorrect medication can worsen symptoms [10]. - Do not feed or give drinks to the patient, as this can lead to choking and interfere with timely medical intervention [11]. Group 5: Misconceptions about Stroke Treatment - Immediate medical attention is crucial, and the golden window for effective treatment is within 4.5 hours of symptom onset [13]. - It is a misconception that stroke patients should be taken to distant hospitals; local hospitals can often provide adequate emergency care [13]. - Young and middle-aged individuals are also at risk for stroke due to unhealthy lifestyles, including hypertension and obesity [15].