高血压

　　Hypertension

　　Hypertension, also known as high or raised blood pressure, is a condition in which the blood vessels have persistently raised pressure. Blood is carried from the heart to all parts of the body in the vessels. Each time the heart beats, it pumps blood into the vessels. Blood pressure is created by the force of blood pushing against the walls of blood vessels (arteries) as it is pumped by the heart. The higher the pressure the harder the heart has to pump.

　　高血压，也称血压升高，是血管持续受到较高压力时出现的一种疾病。血液由心脏通过血管输送至身体的各个部分。心脏每一次收缩，会将血液压送进血管。心脏压送血液推挤血管壁(动脉)所产生的压力就形成血压。血压越高，心脏压送血液所用的力就越大。

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