Core Viewpoint - The ongoing extreme heat has led to a significant increase in cases of heatstroke and cardiovascular diseases, particularly affecting vulnerable populations such as the elderly and outdoor workers [1][2][5]. Group 1: Heatstroke Incidents - There has been a noticeable rise in emergency calls related to heatstroke, especially among delivery workers and sanitation workers [1]. - Heatstroke can occur even in indoor environments with high humidity, emphasizing the need for awareness among the elderly who may not recognize the symptoms [3][4]. Group 2: Cardiovascular Disease Surge - The number of patients with cardiovascular diseases has increased by approximately one-third since July, with cases of acute heart attacks rising significantly [5]. - High temperatures can lead to blood thickening and increased risks of heart and brain attacks due to emotional fluctuations and blood pressure instability [6][8]. Group 3: Recommendations for Safety - Experts recommend maintaining hydration, managing emotional stress, and avoiding drastic temperature changes to mitigate health risks during high temperatures [9]. - For outdoor sports enthusiasts, it is advised to adjust exercise plans, avoid outdoor activities during peak heat hours, and stay hydrated with electrolyte drinks [10].

Core Viewpoint - The article emphasizes the increasing severity and danger of extreme heat waves affecting various regions in China, particularly highlighting the impact on public health and safety [3][12][106]. Group 1: Extreme Heat Impact - The article discusses how extreme heat has become a common experience across northern cities, with temperatures reaching alarming levels, such as 43°C in multiple locations in Shandong [55][50]. - It highlights the sudden onset of high temperatures, catching many residents unprepared, especially in areas with low air conditioning penetration [11][90]. - The article notes that extreme heat is not just uncomfortable but can lead to serious health issues, including heat stroke and even fatalities [80][64]. Group 2: Regional Variations - The article points out that while northern regions are experiencing unprecedented heat, southern regions are also facing their own challenges with high humidity and heat [36][48]. - It mentions specific cities like Beijing and Shandong, where the combination of high temperatures and humidity has created dangerous conditions for residents [17][52]. - The article also references the unusual heat experienced in traditionally cooler areas like Northeast China, where temperatures have soared unexpectedly [28][31]. Group 3: Health Risks and Responses - The article details the symptoms and dangers of heat-related illnesses, particularly heat stroke, which can have a high mortality rate if not treated promptly [80][94]. - It emphasizes the importance of preventive measures, such as staying hydrated, avoiding outdoor activities during peak heat hours, and utilizing air conditioning where available [99][88]. - The article warns that the frequency of extreme heat events is likely to increase in the future, necessitating greater awareness and preparedness among the public [106][108].

近日，各地出现多起因热射病致死案例。人们常将"中暑"与头晕乏力画等号，认为多喝水休息一下 即可缓解。殊不知热射病是致死率极高的医学急症，能在数小时内引发多器官衰竭！ 切勿轻视任何中暑症状！解放军总医院重症医学专家张玉想警示，公众存在严重认知误区——"不 就是中暑？还能死人？"这种轻视极易延误识别，错过"黄金救治期"，导致死亡或永久残疾。 如何区分中暑和热射病 全军热射病防治专家组组长、解放军总医院海南医院首席专家宋青提到，自我判断是否热射病要关 注4个预警信号：烫、晕、晃、乱。烫，指的是自己感觉由内而外地发烫；晕，是感到头晕目眩；晃， 指患者行走不稳，觉得十分疲劳，连迈腿都费劲（在旁人看来患者走路如同醉酒）；乱，患者面部潮红 或发白，发生恶心呕吐、心慌气短、腹痛腹泻等症状，说明此时体内各个器官开始出现热射病表现。旁 人如果识别出此人患上热射病，应立刻进行现场急救，并送患者入院救治。 宋青说："热射病损伤的严重程度主要取决于高温的峰值和持续时间。就比如我们煮一个鸡蛋，刚 放进沸水里我们就立刻关火捞出来，打开鸡蛋，里面依旧是生的；但如果已经煮了三五分钟再捞出来， 鸡蛋里面就已经熟了，凝固了，人体也是一样。人体温度 ...

上午9点，合肥120急救中心指挥大厅迎来呼入高峰。大屏幕上，接听量、出车数急速跳动。调度员冷静询问症状、地址后，一辆辆救护车 迅速驶向现场。 央视网消息：高温天气持续，最近，医院里热射病的病例增多。专家提醒，热射病就是严重的中暑，死亡率高，出现中暑症状后一定不能 忽视。 几天前，山东淄博市70岁的王女士因为意识障碍被120救护车送至淄博市中心医院急诊科。医务人员发现王女士体温高达40.3摄氏度，医 务人员迅速为王女士使用冰毯及冰帽物理降温，并积极给予补液等治疗，王女士体温下降后神志逐渐转清，后转入病房继续治疗，目前已康复 出院。 安徽合肥：中暑病例增加 120专线呼入量增加近两成 记者从安徽合肥急救中心获悉，近段时间随着热射病等中暑病例增加，120急救专线日均来电近1500个，较本轮高温前增加近两成。 数据显示，过去10天伴随气温飙升，中暑相关急救呼救明显增多，高发时段集中在中午至傍晚，症状多为头晕、恶心、呕吐甚至意识不 清。值得注意的是，居家老人中暑的病例也不少。有医生介绍，因老年人身体机能减退、体温调节功能差，需要特别注意。即使在家中的时 候，也要适当开空调。此外，儿童因新陈代谢快，但体温调节中枢未发育成 ...

Core Viewpoint - The article highlights the increasing incidence of heat-related illnesses, particularly heat stroke, due to extreme temperatures across various regions in China, emphasizing the severity and potential fatality of heat stroke cases [1][2]. Group 1: Heat Stroke Overview - Heat stroke is classified as a severe heat-related emergency, characterized by a core body temperature exceeding 40°C and central nervous system dysfunction, with a mortality rate ranging from 20% to 50% [1]. - The progression of heat-related illnesses typically starts with premonitory symptoms, followed by mild heat illness, heat exhaustion, and can ultimately lead to heat stroke [1]. Group 2: Types and Risk Factors - Heat stroke can be categorized into "classic heat stroke" (CHS) and "exertional heat stroke" (EHS), with CHS occurring due to passive exposure to high temperatures, often affecting vulnerable populations such as the elderly, children, and those with pre-existing health conditions [2]. - EHS is primarily caused by high-intensity physical activity, commonly seen in healthy young individuals engaged in strenuous activities during summer [2]. - Environmental factors contributing to heat stroke include intense solar radiation, prolonged high temperatures, sudden temperature increases of 5-10°C, and poor ventilation [2]. Group 3: Individual Risk Factors - Individual factors that may exacerbate the risk of heat stroke include underlying health conditions (e.g., hyperthyroidism, schizophrenia), mismatched physical fitness levels, inadequate hydration, and poor sleep quality [2][3]. Group 4: Emergency Response - Immediate response to symptoms such as dizziness, fatigue, and confusion is crucial, with key actions including moving to a cooler environment, removing clothing, and applying cold water to the body while fanning to promote heat dissipation [4].

Core Insights - Heat stroke is characterized by a core body temperature exceeding 40°C, accompanied by central nervous system dysfunction, which can lead to multi-organ failure and has a mortality rate of 20%-50% [1][3] Group 1: Definition and Severity - Heat stroke is the most severe condition related to high temperatures and is classified as severe heat exhaustion [3] - The progression of heat-related illnesses typically starts with pre-symptomatic heat illness, mild heat illness, heat exhaustion, and can ultimately lead to heat stroke [3] Group 2: Types of Heat Stroke - Heat stroke can be categorized into "classic heat stroke" (CHS) and "exertional heat stroke" (EHS) based on the cause and susceptible populations [3] - CHS is primarily caused by passive exposure to hot environments and is more common among individuals with impaired thermoregulation, such as the elderly, children, pregnant women, and those with underlying health conditions [3] - EHS is mainly due to high-intensity physical activity and is often seen in healthy young individuals engaged in strenuous summer activities, such as military training, firefighting, and construction work [3] Group 3: Risk Factors - Environmental factors contributing to heat stroke include intense solar radiation, prolonged high temperatures, sudden temperature increases of 5-10°C, and poor ventilation [4] - Individual risk factors include pre-existing medical conditions, mismatched physical fitness and training intensity, inadequate hydration, and poor sleep quality [4] - Certain medications that affect thermoregulation, such as anticholinergics, antihistamines, antipsychotics, beta-blockers, and diuretics, can also increase the risk of heat stroke [4] Group 4: Emergency Response - Immediate symptoms such as dizziness, fatigue, confusion, and seizures should prompt urgent cooling measures, which are critical for survival [4] - Recommended emergency actions include removing individuals from high-temperature environments, removing clothing, and applying cold water while fanning to promote heat dissipation [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 ...

Group 1: Weather Impact - A strong heatwave is affecting multiple provinces in China, with high temperatures expected to persist, particularly in Jiangsu, Zhejiang, Fujian, Jiangxi, Hunan, Guangdong, Guangxi, and others [1] - The Central Meteorological Observatory issued a yellow alert for high temperatures, predicting daytime temperatures above 35°C in various regions including North China, Huanghuai, Jianghuai, Jiangnan, and parts of Xinjiang [1][4] - The maximum electricity load in China reached a historical high of 1.465 billion kilowatts on July 4, 2023, an increase of nearly 150 million kilowatts compared to the same period last year [1] Group 2: Meteorological Analysis - The current high temperature and humidity levels are considered unusual for this time of year, with significant heat observed in northern regions before the traditional "Minor Heat" period [2] - The phenomenon is attributed to the early northward movement of the subtropical high-pressure system, which has led to widespread high temperatures and moisture transport from the ocean [2] Group 3: Health Concerns - There has been an increase in cases of heat-related illnesses such as heat stroke, with reports of patients experiencing severe symptoms due to prolonged exposure to high temperatures [5][7] - Recommendations for preventing heat-related illnesses include avoiding outdoor activities during peak heat hours, wearing light clothing, and staying hydrated with electrolyte-rich fluids [8][10]

Core Points - The article discusses the rising temperatures in various regions, with some areas exceeding 40°C, leading to an increased risk of heatstroke [1] Group 1: Heatstroke Symptoms - The progression of heatstroke typically includes premonitory symptoms, mild heatstroke, and severe heatstroke, with heat stroke being the most critical state where the body loses its ability to regulate temperature, leading to multi-organ failure and a mortality rate as high as 70%-80% [2] - Symptoms indicating premonitory heatstroke include dizziness, headache, fatigue, thirst, excessive sweating, palpitations, and lack of concentration [3] - Heat exhaustion may present with symptoms such as excessive sweating, cool and clammy skin, pale complexion, nausea, dizziness, increased heart rate, low blood pressure, and decreased urine output [3] Group 2: Prevention of Heatstroke - It is advised to avoid prolonged exposure to high-temperature and high-humidity environments, taking breaks every 30 minutes when temperatures exceed 32°C or humidity exceeds 60% [4] - Staying hydrated, especially with salt-containing fluids, is crucial [4] - A light diet is recommended, avoiding greasy and spicy foods, as well as alcohol and smoking, which can increase susceptibility to heatstroke [4] - Consuming cooling beverages and seasonal fruits, such as mung bean soup, green tea, and watermelon, is beneficial [4] Group 3: Handling Heatstroke Symptoms - Patients should be moved to a cool, ventilated area, and their clothing loosened to aid cooling [5] - Environmental temperature should be lowered using fans or air conditioning [5] - If the patient is conscious, encourage them to drink fluids, preferably those containing salt [5] - In cases of severe symptoms like unconsciousness or respiratory failure, immediate medical assistance should be sought [5][8] Group 4: When to Seek Medical Attention - Persistent high body temperature exceeding 40°C warrants medical attention [6] - Continuous headaches and muscle spasms are also indicators for seeking help [6][7] - Symptoms such as confusion, extreme weakness, and loss of consciousness require immediate medical intervention [8] Group 5: Incorrect Handling Methods - Rapidly moving a heatstroke patient to an excessively cold environment is not advisable; a suitable temperature range is 22°C to 25°C [9] - Using very cold water for cooling can cause blood vessel constriction, hindering heat dissipation [10] - Self-medication with antipyretics is not recommended as they are ineffective in cases of heatstroke [11]

Core Viewpoint - The article highlights the dangers of heat stroke, particularly heat stroke as a severe form of heat-related illness, emphasizing the need for awareness and timely intervention during extreme heat conditions [1]. Group 1: Heat Stroke Overview - Heat stroke is characterized by a failure of the body's cooling system, leading to a core temperature exceeding 40 degrees Celsius, which can result in a high mortality rate of 70% to 80% [1]. - Early symptoms of heat exhaustion include dizziness, fatigue, thirst, and excessive sweating, with body temperature typically not exceeding 38 degrees Celsius [1]. Group 2: Identification and Emergency Response - Key signs of heat stroke include abnormal skin color, excessive sweating or lack of sweating, severe headache, confusion, rapid heartbeat, and gastrointestinal distress [1][4]. - Immediate first aid measures include moving the patient to a cool, ventilated area, removing excess clothing, and employing cooling techniques such as cold water immersion or using fans to enhance evaporation [4][5]. Group 3: Prevention Guidelines - For northern regions experiencing dry heat, recommendations include staying indoors during peak sun hours, staying hydrated, and wearing breathable clothing [5]. - For southern regions with high humidity, it is advised to maintain indoor temperatures around 26 degrees Celsius, limit strenuous activities, and consume a light diet rich in fruits and vegetables [5]. Group 4: Importance of Awareness - Experts stress that heat stroke often occurs when individuals are complacent, and having knowledge of prevention and emergency response can significantly improve survival rates [6].