大街上车多人多，行速就缓慢，甚至在某一个路口彻底堵死。 同样的道理，血液黏稠，血流速度会明显变慢，容易在局部组织或重要脏器引起血液循环障碍，出现缺血、缺氧等问题。 一杯溶解了多种物质的水，当其中任何一种溶质增加，或者水分减少，都会导致溶液浓度升高，变得更"稠"。 同理，对于血液而言，红细胞变形与聚集、血小板数量增多、血浆中的一些蛋白成分增加、血脂升高（特别是胆固醇和甘油三酯增多），以及身 体水分不足（脱水）等，都可能让血液变黏稠。 血液黏稠度增高，最先影响的是毛细血管，会使其氧气与营养输送受阻。组织细胞若长期处于缺氧、缺血状态，将导致功能受损乃至凋亡。 黏稠的血液还会加剧与血管壁的摩擦，加速血管内壁老化与损伤，并引发炎症反应。这种损伤为胆固醇的沉积创造了条件，逐渐形成动脉粥样硬 化斑块。 这些斑块一旦破裂，便会激活凝血系统，最终可能形成血栓，诱发心梗、脑梗等严重疾病。 哪些信号提示血液太过黏稠？如何预防和减轻相关症状？ 什么是血液黏稠？ 血液黏稠属于血液流变学的范畴，描述的是血液的"浓稠度"和"流动性"，指血液中的有形成分增多，导致血流阻力增加、血液流速变慢。 血液是怎样变黏稠的？ 中国医科大学航空总医院心内 ...

脑血管破了或堵了，统称为脑卒中，又叫"中风"，包括脑梗死和脑出血。 秋意渐浓，气温渐低，心脑血管疾病又到了高发季节。近期门诊中脑梗等急症的就诊量，呈现出上升趋 势。 脑梗起病急、进展快，一旦发作，每延误1分钟的救治，就有约190万个脑细胞死亡。若错过4.5小时的 黄金治疗窗口，可能留下偏瘫、失语等后遗症。 脑血管在堵死之前，身体有什么异常信号？哪些人更容易发生脑梗？一起了解↓ 脑血管迎来危险时刻 3个信号 | 类型 | 脑梗死 | 脑出血 | | --- | --- | --- | | 图示 | | | | 发病率 | 70%~80% | 20%~30% | | 预后 | 良好 | 较差 | | 症状 | 渐显、隐匿 | 立现、 猛烈 | 数据显示，秋冬脑梗的复发率比春夏高出30%以上，这与气候特点密切相关： 一早一晚气温低，可使血压上升，血管壁压力增大，易导致原有斑块脱落和血管破裂，低温还会使血流 相对变慢，更易形成血栓。人们秋冬季更爱吃高油高盐的食物御寒，且户外活动相对减少，易导致血脂 升高。气温下降，很多人饮水量相应减少，血液黏稠度上升，血流变慢，这些都会增加脑梗的发生风 险。 说明脑血管随时会堵死 医 ...

Core Viewpoint - The eyes serve as a "monitor" for brain diseases, particularly for conditions like cerebral infarction, which has high recurrence, disability, and mortality rates [1][2][3] Group 1: Connection Between Eyes and Brain - The optic nerve is a direct extension of the brain, and the anatomical structure of the eye's blood vessels is similar to that of the brain's blood vessels [1][3] - Changes in the eye can reflect underlying brain conditions, as the eye and brain share a common blood supply system [3] Group 2: Warning Signs of Cerebral Infarction - Approximately 20%-50% of patients with cerebral infarction may exhibit significant eye abnormalities prior to the onset of the condition [2] - Four specific eye symptoms may indicate a risk of cerebral infarction: - Sudden blackening of vision in one eye [4] - Loss of vision in the same side of both eyes [4] - Double vision [4] - Nystagmus, which can indicate cerebellar or brainstem infarction [5] Group 3: Recommended Actions for Eye Symptoms - If eye symptoms are occasional, patients should first consult an ophthalmologist to rule out eye diseases [6] - For sudden or recurrent eye symptoms accompanied by dizziness or speech difficulties, immediate consultation with a neurologist or emergency department is advised [6] - Timely treatment within 4.5 hours of symptom onset significantly increases recovery chances for cerebral infarction [6]

Core Viewpoint - The article discusses the symptoms of numbness that may indicate the early signs of a stroke, emphasizing the importance of recognizing these symptoms for timely medical intervention [1][3]. Group 1: Symptoms of Stroke - Numbness in three specific areas—tongue, face, and one-sided limbs—should raise concerns about the risk of stroke [3][5][6]. - Tongue numbness can affect speech and swallowing, indicating potential brain blood supply issues [5]. - Facial numbness may lead to asymmetrical facial expressions, signaling possible nerve damage due to insufficient blood flow [5]. - One-sided limb numbness is a common precursor to stroke, often indicating that one side of the brain is affected [6]. Group 2: Characteristics of Numbness Related to Stroke - Numbness from cerebrovascular diseases typically occurs suddenly without warning, and may happen during rest or physical activity [6][7]. - It is often unilateral, affecting one side of the body, and can progress from transient to persistent numbness as blood supply issues worsen [6]. - Unlike numbness caused by other conditions, such as cervical or lumbar spine issues, stroke-related numbness does not improve with position changes [7]. Group 3: Accompanying Symptoms - Stroke-related numbness is often accompanied by weakness, dizziness, headaches, vision problems, and memory decline [8]. - Other alarming signs include sudden dizziness, vomiting, tinnitus, and instability while standing [8]. Group 4: Risk Factors for Stroke - Stroke risk factors include both uncontrollable factors (age, gender, genetic background) and controllable factors (hypertension, diabetes, high cholesterol, smoking, and poor lifestyle choices) [9]. - Sedentary behavior can increase blood viscosity and lead to plaque formation in blood vessels, heightening stroke risk [10]. - High salt and oil intake can elevate blood pressure and cholesterol levels, contributing to vascular damage [12]. - Emotional fluctuations and severe snoring during sleep can also increase the likelihood of stroke by affecting blood pressure and oxygen levels [14][16]. Group 5: Recommendations for Prevention - It is advised to take breaks from sitting every hour to promote blood circulation [11]. - Daily salt intake should be limited to under 5 grams, and healthier cooking oils should be used [13]. - Stress management techniques, such as deep breathing and meditation, are recommended to mitigate emotional impacts on vascular health [14]. - Individuals experiencing severe snoring should adjust their sleeping positions and seek medical evaluation [17]. - Smoking cessation is crucial, as smokers face a significantly higher risk of stroke compared to non-smokers [18].

Group 1 - High temperatures, high humidity, and low pressure are significant contributors to cardiovascular diseases, with an increase in heart attack patients reported in Hangzhou [1] - The director of the cardiology department at Zhejiang University Second Hospital noted that over 20 heart attack patients have been treated in the past month due to the heat [1] - Factors such as skin blood vessel dilation, increased blood viscosity, and emotional stress during hot weather can elevate the risk of heart attacks [1] Group 2 - Patients with hypertension, diabetes, and hyperlipidemia are advised to monitor their blood pressure daily and adhere strictly to medication regimens [2] - Recommendations include drinking warm water in small amounts, avoiding cold drinks, and exercising during cooler times of the day [2] - Immediate medical attention is crucial if symptoms like chest pain, shortness of breath, or dizziness occur, as these may indicate serious conditions like heart failure or stroke [2]