吸烟及吸烟程度与首次急性心肌梗塞发病年龄的关系

本研究对１１５例首次急性心肌梗塞（ＡＭＩ）住院患者分为：①不吸烟组（５５例）；②吸烟量＜２０支／日组（４７例）；③吸烟量≥２０支／日组（１３例），观察各组首次ＡＭＩ发病年龄。结果：各组平均发病年龄为：①组：６２．３１±１０．０２岁；②组：６０．３８±８．３３岁；③组：５３．６９±６．７岁。③组与①组、②组相比，差异有显著性（Ｐ＜０．０１和Ｐ＜０．０１）。其中，吸烟量≥２０支／日组首次ＡＭＩ发病年龄平均较不吸烟组早８．６岁。结论：吸烟者首次ＡＭＩ发病年龄早于不吸烟组，每日吸烟量愈多，首次ＡＭＩ发病年龄愈早，提示吸烟尤其是大量吸烟可加速急性心肌梗塞的发生。

The Relationship Between Amount of Cigarette Smoking and Age of Onset of First Acute Myocardial Infarction Episode

In the present study,the 115 in patients with first episode of acute myocardial infarction(AMI)were divided in to the following groups:①nonsmoker group(55 cases);②smoking<20 cigarettes/day(47 cases);③smoking≥20 cigarettes/day.(B case).The age at first episode of AMI of all patients was observed. Results:the average age of the first episode of AMI were:①group:62.3l±10.02 year;②group:60.38±8.33year;③group:53.69±6.7 year.Comparing the③group with that of①and②groups respectively,there are significantly difference(P<0.01 and P<0.01 respectively).The patients smoking ≥20 cigarettes/day had the first episode of AMI 8.6year earlier than that of nonsmokers.Conclusion:the age at the first episode of AMI was earlier in smokers than nonsmokers,the cigarette smoked everyday,the earlier the age at the first episode of AMI.It suggested that smoking might accelerated the occurrence of AMI.