镁是体内重要的阳离子,它在体内的含量仅次于钠、钾、钙而居第四位,在细胞内液中仅次于钾而居第二位。自从五十年代以来,镁作为体内的一种电解质已受到临床医师的重视。近年来,有关镁与心血管疾病的关系的研究取得了较大的进展,不少人观察到许多心脏疾病都伴有镁的缺乏,而缺镁又往往成为这些疾病不易愈复的一个重要因 Magnesium is an important cation in the body, its content in the body is second only to sodium, potassium and calcium, and second only to potassium in the intracellular fluid. Magnesium, as an electrolyte in the body, has received the attention of clinicians since the 1950s. In recent years, great progress has been made in the study of the relationship between magnesium and cardiovascular diseases. Many people have observed that many heart diseases are accompanied by a deficiency of magnesium, which is often an important cause of these diseases