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St John, type of wounds, Fast facts on first aid, fast heart rate,…
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Fast facts on first aid
The aims of first aid are to preserve life, prevent harm, and promote recovery.
In first aid, ABC stands for airway, breathing, and circulation.
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While doing chest compressions, you may hear cracks. This is normal.
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fast heart rate
A normal heart rate for a healthy adult is between 60 and 100 beats per minute. Heart rates of more than 100 beats per minute (tachycardia) can be caused by:
Exercise or stress. This fast heart rate usually returns to normal range (60 to 100 beats per minute) with rest and relaxation.
Illnesses that cause fever. When the cause of the fever goes away, the heart rate usually returns to normal.
Dehydration. When the dehydration is treated, the heart rate usually returns to normal.
Medicine side effects, especially asthma medicines.
Heavy smoking, alcohol, or too much caffeine or other stimulants, such as diet pills. Stopping the use of tobacco, alcohol, caffeine, or other stimulants may help your heart rate return to normal.
Cocaine, amphetamines, and methamphetamines.
Babies and children younger than 2 years old have higher heart rates because their body metabolism is faster. Heart rates decrease as children grow, and usually by the teen years the heart rate is in the same range as an adult's.
A fast heart rate may be caused by a more serious health problem. A heart problem or other medical conditions may sometimes cause a fast heart rate. A fast heart rate may cause palpitations, dizziness, lightheadedness, or fainting.
Heart rhythm problems that cause a fast heart rate include atrial fibrillation and supraventricular tachycardia (SVT).
If you have heart disease or heart failure, or if you have had a heart attack, be sure you understand the seriousness of a change in your heart rate or rhythm.
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孩子心跳快不是心脏病
心跳快是一种生理现象，孩子正常心跳就比成人快，年龄愈小，每分钟心跳次数就愈快。新生儿心跳平均每分钟120—140次，1岁以下110—130次，2—3岁100—120，4—7岁80—100次，8—14岁70—90次，接近成人。婴幼儿处于生长发育时期，新陈代谢旺盛，需要血液输送大量的营养物质，心跳加快就是身体加快血液运输功能的一项措施。孩子身体小，血液在体内循环一周的时间比成人要短，心脏必须加快跳动，才能满足循环的需要。心脏跳动受神经系统控制，交感神经兴奋可使心跳加快，副交感神经兴奋可使心跳减慢，正常情况下两类神经保持平衡，心肌收缩力量适中，速度不快不慢。但婴幼儿神经发育未成熟，交感神经占优势，也是心跳快的一个原因。这种生理性的心跳快，与你父亲的病理性心脏病引起的心慌是两回事，性质不同，更谈不上遗传。随着年龄的增加，生理情况接近成人时，心率就会逐渐慢下来。
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GL tract
The gastrointestinal tract is the tract from the mouth to the anus which includes all the organs of the digestive system in humans and other animals
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- D - danger
- R - response
- S - shout for help
- A - airway
- B - breathing
- C - compression
- D - defibrillation
- gasping for air = 呼吸困难
- airway = 呼吸道
- sternum = 胸骨
- interfere = 干涉
- spasm = 痉挛
- collapse = 倒
- gasping = 大声喘息
- ashen = 灰白
- heart muscle = 心肌
- clot =
R - response
- A - alert
- V - voice
- P - pain
- U - unresponsive
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adult have 206 bones, 33 pines.
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