低血压 - When Blood Pressure Is Too Low

多低才算血压过低?

Within certain limits, the lower your blood pressure reading is, the better. While there is no specific number at which day-to-day blood pressure is considered too low, a reading of less than 90/60 mm Hg is considered hypotension. Hypotension is the term for blood pressure that is too low. The condition is benign as long as none of the symptoms showing lack of oxygen are present.

低血压的症状

Most health care professionals will only consider chronically low blood pressure as dangerous if it causes noticeable signs 和 symptoms, 如:

• 混乱
• 头晕或头昏
• 恶心想吐。
• 晕倒(晕厥)
• 乏力。
• 颈部或背部疼痛
• 头疼。
• 视力模糊
• 心悸, or feelings that your heart is skipping a beat, 颤动的, 或者打得太用力或太快

低血压的潜在原因

低血压可发生在:

• 长线上电子游戏飞禽走兽卧床休息(直立)
• 抑郁症或帕金森病
• Pregnancy: During the first 24 weeks of pregnancy, it’s common for blood pressure to drop.
• Decreases in blood volume: A decrease in blood volume can also cause blood pressure to drop. A significant loss of blood from major trauma, dehydration or severe internal bleeding reduces blood volume, 导致血压严重下降.
• Certain medications: A number of drugs can cause low blood pressure, including diuretics 和 other drugs that treat hypertension; 心脏药物 such as beta blockers; drugs for Parkinson’s disease; tricyclic antidepressants; erectile dysfunction drugs, particularly in combination with nitroglycerine; narcotics; 和 alcohol. 其他处方及 非处方药 may cause low blood pressure when taken in combination with 高血压药物.
• Heart problems: Among the heart conditions that can lead to low blood pressure are an abnormally low heart rate (心动过缓)，问题 心脏瓣膜, 心脏病 和 心脏衰竭. Your heart may not be able to circulate enough blood to meet your body’s needs.
• Endocrine problems: Such problems include complications with hormone-producing gl和s in the body’s endocrine systems; specifically, 甲状腺功能减退(甲状腺功能减退), 肾上腺功能不全(艾迪生病), 低血糖和, 在某些情况下, 糖尿病。.
• Severe infection (septic shock): Septic shock can occur when bacteria leave the original site of an infection, 最常见的是肺部, 腹部或尿道, 然后进入血液. The bacteria then produce toxins that affect blood vessels, leading to a profound 和 life-threatening decline in blood pressure.
• Allergic reaction (anaphylaxis): Anaphylactic shock is a sometimes-fatal allergic reaction that can occur in people who are highly sensitive to drugs such as penicillin, to certain foods such as peanuts or to bee or wasp stings. This type of shock is characterized by breathing problems, 荨麻疹, 瘙痒, 喉咙肿了，突然, 血压急剧下降.
• Neurally mediated 晕厥 (hypotension): Unlike orthostatic hypotension, this disorder causes blood pressure to drop after st和ing for long periods, 导致头晕等症状, 恶心和晕厥. This condition primarily affects young people 和 occurs because of a miscommunication between the heart 和 the brain.
• Nutritional deficiencies: A lack of the essential vitamins B-12 和 folic acid can cause anemia, which in turn can lead to low blood pressure.
• Dehydration: Dehydration can sometimes cause blood pressure to drop. 然而, dehydration does not always cause low blood pressure but may cause other symptoms such as weakness, 头晕和疲劳

If you notice a sudden decline in blood pressure

A single lower-than-normal reading is usually not cause for alarm unless you are experiencing any other symptoms or problems. 如果你感到头晕, 头晕, 恶心或其他症状, it’s a good idea to consult with your health care professional. To help with your diagnosis, keep a record of your symptoms 和 activities at the time they occurred.

Is low blood pressure related to low heart rate? 找出.