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自从文献报道吸烟是冠心病发生的有害因子以及习惯吸烟者的猝死发生率较高以来,国外许多学者对吸烟引起心血管功能的变化作了一系列的研究。但国内未见
Since the literature reports that smoking is a harmful factor in the development of coronary heart disease and the incidence of sudden death in habitual smokers has been high, many foreign scholars have made a series of studies on the changes in cardiovascular function caused by smoking. But not seen in China