For bathers, the risk was tied to outside temperatures, with more cardiac arrests on colder days.

对于洗澡的人，这些风险是受到温度的影响，寒冷的天气更多人心跳停止。

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They then compared that data to the 8,216 out-of-hospital cardiac arrests that occurred between 2002 and 2006.

接着他们拿这些数据与发生于2002和2006年之间的8216例院外心脏停搏相比较。

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What they were looking for was simple: Were there more cardiac arrests on high pollution days than on lower pollution days?

他们正在寻找的东西是简单的：是否在高污染日子里比低污染日子有更多的心脏停搏？

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Al-Khatib found that many patients who were being implanted with the ICDs had recently experienced arrhythmias or cardiac arrests.

CNN: STORY HIGHLIGHTS

And it said a third of the cardiac arrests could have been prevented.

BBC: NHS 'too quick to resuscitate acutely ill people'

Former Bolton Wanderers midfielder Fabrice Muamba is supporting a year-long campaign that aims to prevent death from sudden cardiac arrests.

BBC: Fabrice Muamba supports Hearts and Goals cardiac campaign