these procedures repeat
重复这些步骤
以上为机器翻译结果，长、整句建议使用 人工翻译 。
But while these newer devices have reduced the number of repeat procedures needed, they also carry a heightened risk of potentially fatal thrombosis, or blood clots.
但是这种新装置在降低再狭窄数的同时，又增加了发生严重血栓或血凝症等疾病的发病几率。
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