Core Viewpoint - The article discusses the rising temperatures and the associated health risks, particularly focusing on heat stroke, its symptoms, and the importance of early recognition and treatment [1]. Group 1: Heat Stroke Overview - Heat stroke, medically known as "severe heat illness," is caused by an imbalance between heat production and dissipation due to exposure to high temperatures or intense physical activity, characterized by a core body temperature exceeding 40°C and central nervous system abnormalities [3]. - Key early warning signs for heat stroke include rapid increase in body temperature, extreme fatigue, dizziness, and confusion, summarized as "hot, shaky, dizzy, and confused" [3]. Group 2: Symptoms and Diagnosis - Symptoms of heat stroke can vary; atypical cases may not present with high core temperatures or severe consciousness disturbances, especially in elderly individuals and infants [3][4]. - Specific symptoms to watch for include intense nausea without vomiting, behavioral changes, and abnormal responses to environmental conditions [4]. Group 3: Emergency Response - The primary principle in treating heat stroke is to lower the core temperature as quickly and effectively as possible, with a critical window of 30 minutes to reduce the temperature below 40°C to significantly decrease mortality risk [4]. - Emergency measures include moving the patient to a cool, ventilated area, removing clothing, and using cold water immersion or cooling methods while monitoring vital signs [4].

Core Viewpoint - The article emphasizes the increasing cases of heat stroke, particularly heat stroke, due to prolonged high temperatures, highlighting its severe consequences and high mortality rate [1][3]. Group 1: Health Risks and Symptoms - Heat stroke can lead to multi-organ dysfunction and failure, with a mortality rate ranging from 14% to 65% [3]. - Initial symptoms of heat stroke include dizziness, nausea, vomiting, and excessive sweating, which can escalate to severe conditions like unconsciousness and multi-organ damage if not treated promptly [5][7]. - High-risk groups include the elderly, infants, and individuals with chronic diseases, as well as those engaged in strenuous physical activities without adequate cooling [7][8]. Group 2: Prevention and Response - It is crucial to move individuals showing signs of heat stroke to cooler environments and implement cooling measures immediately [8]. - Common misconceptions include using alcohol for cooling, which can harm sensitive skin and lead to alcohol absorption issues; instead, using lukewarm water for wet compresses is recommended [8][12]. - Self-medication with cooling drugs is less effective than hydration; drinking water or saline solutions is prioritized for recovery [10][12].

Group 1 - The incidence of heat stroke cases is increasing due to prolonged high temperatures, with a high mortality rate ranging from 14% to 65% if not treated promptly [1][6] - Symptoms of heat stroke can escalate rapidly from mild heat exhaustion to severe heat stroke within a few hours, necessitating immediate medical attention to prevent irreversible damage [1][3] - High-risk groups for heat stroke include elderly individuals, infants, and those with chronic health conditions, as well as people engaged in outdoor work or strenuous physical activities [6][4] Group 2 - Enclosed environments, such as poorly ventilated spaces, can significantly increase the risk of heat stroke, particularly among the elderly who may avoid using air conditioning [4][3] - Common scenarios leading to heat stroke include prolonged cooking in non-air-conditioned kitchens, extended stays in indoor hot springs, and postpartum recovery without proper ventilation [4][6] - Immediate cooling measures and hydration are critical for individuals showing symptoms of heat stroke, as self-medication with cooling drugs is often ineffective [7][6]

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].

Core Viewpoint - The article emphasizes the seriousness of heat stroke and heat illness, highlighting the high mortality rate associated with heat stroke and the importance of early recognition and treatment [1][2][4]. Group 1: Understanding Heat Stroke - Heat stroke is a severe form of heat illness that can lead to multi-organ failure within hours, and public awareness is critically low regarding its dangers [1][2]. - Key warning signs for self-assessment of heat stroke include feeling hot internally, dizziness, unsteady walking, and symptoms like nausea and shortness of breath [2][3]. - The diagnosis of heat stroke requires specific conditions: high temperature and humidity, along with at least one of the following: altered consciousness, body temperature above 40°C, failure of two or more organs, or coagulation disorders [2][3]. Group 2: Immediate Response and Treatment - Immediate self-care actions include stopping physical activity, leaving high-temperature environments, and initiating cooling measures [4]. - The severity of heat stroke damage is influenced by peak temperature and duration of exposure; rapid cooling is essential to prevent cellular damage [4][5]. - Effective cooling methods include applying ice packs to major arteries, full-body cooling in cold water, and ensuring the patient is transported to a medical facility promptly [5][6]. Group 3: Prevention Strategies - Preventive measures include avoiding prolonged vigorous exercise in high-temperature and high-humidity conditions, especially for vulnerable populations like the elderly and children [7][8]. - Individuals working in high-temperature environments, such as construction workers, should take extra precautions to prevent heat-related illnesses [7]. - Gradual exposure to heat through outdoor activities can enhance heat tolerance and reduce the risk of heat-related illnesses [8].

Group 1 - The core issue is the increase in heatstroke cases due to prolonged high temperatures, with experts warning about the severity and high mortality rate associated with heatstroke [1][4] - In Hefei, the emergency call volume for heat-related cases has risen nearly 20%, averaging around 1,500 calls per day [5][4] - The peak call times for emergency services are during midday to evening, with symptoms commonly including dizziness, nausea, vomiting, and even loss of consciousness [7][4] Group 2 - Elderly individuals are particularly vulnerable to heatstroke due to reduced bodily functions and poor temperature regulation, necessitating special attention [7][4] - Children also require extra caution as their metabolic rates are high, but their temperature regulation systems are not fully developed [7][4] - Immediate actions recommended include moving to a cool, ventilated area, loosening clothing, and hydrating, with a call to emergency services if symptoms do not improve [9][4]

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 ...