英文翻译高手请进 （我急用 麻烦大家了!）

英文翻译高手请进 （我急用 麻烦大家了!）
Operative mortality for open surgical repair of an AAA is 4 to 5 percent, and nearly one-third of patients undergoing this surgery have other important complications (e.g., cardiac and pulmonary). Additionally, men having this surgery are at increased risk for impotence.
Endovascular repair of AAAs (EVAR) is currently being used as an alternative to open surgical repair. Although recent studies have shown a short-term mortality and morbidity benefit of EVAR compared with open surgical repair, the long-term effectiveness of EVAR to reduce AAA rupture and mortality is unknown. The long-term harms of EVAR include late conversion to open repair and aneurysmal rupture. EVAR performed with older-generation devices is reported to have an annual rate of rupture of 1 percent and conversion to open surgical repair of 2 percent. The conversion to open surgical repair is associated with a peri-operative mortality of about 24 percent. The long-term harms of newer generation EVAR devices are yet to be reported.
For most men, 75 years may be considered an upper age limit for screening. Patients cannot benefit from screening and subsequent surgery unless they have a reasonable life expectancy. The increased presence of comorbidities for people aged 75 and older decreases the likelihood that they will benefit from screening.
Ultrasonography has a sensitivity of 95 percent and specificity of nearly 100 percent when performed in a setting with adequate quality assurance. The absence of quality assurance is likely to lower test accuracy. Abdominal palpation has poor accuracy and is not an adequate screening test.
One-time screening to detect an AAA using ultrasonography is sufficient. There is negligible health benefit in re-screening those who have normal aortic diameter on initial screening.
Open surgical repair for an AAA of at least 5.5 cm leads to an estimated 43-percent reduction in AAA-specific mortality in older men who undergo screening. However, there is no current evidence that screening reduces all-cause mortality in this population.
In men with intermediate-sized AAAs (4.0-5.4 cm), periodic surveillance offers comparable mortality benefit to routine elective surgery with the benefit of fewer operations. Although there is no evidence to support the effectiveness of any intervention in those with small AAAs (3.0-3.9 cm), there are expert opinion-based recommendations in favor of periodic repeat ultrasonography for these patients.

Operative mortality for open surgical repair of an AAA is 4 to 5 percent,and nearly one-third of patients undergoing this surgery have other important complications (e.g.,cardiac and pulmonary).Additionally,men having this surgery are at increased risk for impotence.
腹主动脉瘤的开腔手术死亡率是百分之4到5,同时,大约三分之一进行手术的病人还会有其他严重的并发症,如心脏（有点不确定是心脏还是胃,两种意思都有）或肺的问题.另外,手术病人阳痿的可能性也会增加.
Endovascular repair of AAAs (EVAR) is currently being used as an alternative to open surgical repair.Although recent studies have shown a short-term mortality and morbidity benefit of EVAR compared with open surgical repair,the long-term effectiveness of EVAR to reduce AAA rupture and mortality is unknown.The long-term harms of EVAR include late conversion to open repair and aneurysmal rupture.EVAR performed with older-generation devices is reported to have an annual rate of rupture of 1 percent and conversion to open surgical repair of 2 percent.The conversion to open surgical repair is associated with a peri-operative mortality of about 24 percent.The long-term harms of newer generation EVAR devices are yet to be reported.
腔内修复术现在已经成为开腔手术的替代品.尽管最近研究表明,腔内手术在短期死亡率和发病率方面都优于开腔手术,它减少腹主动脉瘤破裂及并发症的长期效果仍然不为我们所知.长期伤害包括病情最近转化为需要开腔手术及瘤破裂.据报道用旧一代器械所进行的腔内修复术有百分之一的并发症,有百分之二需要再开腔手术.需要再开腔手术和24%的围术期死亡率有关.然而,使用新一代器械进行手术的长期伤害还不曾报导.
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