标题: 求解GWD-YN-10 Q22 [打印本页]
作者: msufcufou 时间: 2010-7-30 20:41 标题: 求解GWD-YN-10 Q22
Often patients with ankle fractures that are stable, and thus do not require surgery, are given follow-up x-rays because their orthopedists are concerned about possibly having misjudged the stability of the fracture. When a number of follow-up x-rays were reviewed, however, all the fractures that had initially been judged stable were found to have healed correctly. Therefore, it is a waste of money to order follow-up
x-rays of ankle fracture initially judged stable.
Which of the following, if true, most strengthens the argument?
A. Doctors who are general practitioners rather than orthopedists are less likely than orthopedists to judge the stability of an ankle fracture correctly.
B. Many ankle injuries for which an initial x-ray is ordered are revealed by the x-ray not to involve any fracture of the ankle.
C. X-rays of patients of many different orthopedists working in several hospitals were reviewed.
D. The healing of ankle fractures that have been surgically repaired is always checked by means of a follow-up x-ray.
E. Orthopedists routinely order follow-up x-rays for fractures of bone other than ankle bones.
答案是C,无法理解。。。
作者: victoria820 时间: 2010-7-31 07:42
事实1：如果只是骨裂，那就不用做手术。
事实2：很多x光诊断为骨裂的案子，的确也只是骨裂。
结论： 所以后来的x光浪费了，还不如不拍。
这里面的假设就是：医生不是很肯定自己的最初诊断，要通过不停的拍x光，来验证自己最初诊
断的正确性。
什么能够加强这个结论？
那就要选择消除医生自己怀疑自己错的疑虑，加强最初诊断正确性的选项。
C：如果第一次的x-ray是很多医生一起看，那么错误的概率就下降了。也就没有必要不停的拍
了。
C的确可以加强最初诊断的正确性，所以后来的x-ray就不用拍了。
作者: bettytons 时间: 2010-8-1 07:37
这题到底是B还是C,GWD答案是B...confuse了。。。
作者: chriswendy35 时间: 2010-8-1 20:23
C选项是说，同一个病人的x-ray被许多医生检查？是这个意思吗？
作者: norgar 时间: 2010-8-2 06:37
我觉得C是说一个病人被很多不同医院的不同医生看，导致照了N次X-ray吧。所以N-1次都是完全不必要的
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