Right and Left Pressure: Differences in blood pressure between right and left arms are associated with artery disease in the legs, according to a meta-analysis published in the Lancet.
根据《柳叶刀》（Lancet）期刊发表的一份统合分析报告，左臂和右臂血压的差异与腿部的动脉疾病有关。
The authors reviewed the findings of 20 studies that compared patients' cardiovascular health and blood-pressure readings.
这份报告的作者回顾了20项将病人心血管健康与血压读数进行对比的研究结果。
Overall, about 12% to 15% of the subjects had peripheral vascular disease, the obstruction of arteries outside heart and brain, typically of those supplying blood to the legs.
总的来说，约12%到15%的研究对象患有外周血管疾病，即心脏和大脑外部的动脉阻塞，通常是为腿部供血的动脉。
But adults with a 10 mmHg difference in systolic blood pressure between arms were more than twice as likely as other adults to have the disease. Previous research suggests that about one-fifth of adults have arm-differences in blood pressure that are at least that large.
但双臂收缩压有10毫米汞柱差异的成年人患该疾病的可能性是其他人的两倍。之前的研究表明，约五分之一的成年人双臂血压差至少有这么大。
Caveat: It isn't known whether inter-arm blood-pressure differences can predict future disease, or whether they merely reflect pre-existing disease.
注意：不清楚双臂血压差是否能够预测未来疾病，或是否仅仅反映出先前存在的疾病。
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