Re: [申覆] 醫學六 31
Williams 21 edition p.857
.........Approximately 50 to 60 percent of early spontanoeus abortions
are associated with chromosomal anomaly of the conceptus. ................
所以應該可以建議做染色檢查
D應該可以選
手邊沒有22版的Williams
不知道有沒有人有新版Williams?
另外題幹中有提到acrania
不知道有沒有人有Nelson可以查一下是否acrania跟chromosome有無關係?
這樣立論就更清楚了
※ 引述《chihuahua (chihuahua)》之銘言：
: [申覆] 醫學六 31
: 答案: B.懷孕前服用葉酸及多種維生素,懷孕後接受高層次超音波檢查
: 這答案好像已經把etiology設定為:Folic acid deficiency
: 其它的etiology也包括了:Genetic factors
: -->那麼D也應該是答案之一
: Genetic factors — A genetic factor is suggested by the observations that
: NTDs have a high concordance rate in monozygotic twins, are more frequent
: among siblings, and are more common in females compared to males [9].
: In addition, there is a high prevalence of karyotypic abnormalities among
: fetuses with NTDs, especially in the presence of other congenital anomalies.
: For example, a large study evaluating the frequency of chromosomal
: abnormalities in pregnancies with fetal NTDs found these abnormalities in
: 6.5 percent of affected cases (4/167 fetuses with an isolated NTD and 9/33
: fetuses with a NTD and associated anomalies) [10]. A second series reported
: a similar rate (7 percent) of chromosomal abnormalities in fetuses with NTDs
: [11]. Trisomy 18 was the most common aneuploidy in both series. These data
: support the use of fetal karyotyping as an aid in diagnostic
: evaluation and recurrence risk counseling.
: 資料來源: Uptodate.com - Anencephaly and encephalocele
: 建議B,D皆給分
: 覆議的請推文 謝謝
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