Abstract
The Relationship of the Fetal Crown-Rump Length to the Yolk Sac Diameter in Normal Pregnancy
Highlights
A wanted pregnancy is typically viewed as a time filled with excitement, but the uncertainty about its outcome can be quite worrisome to the patient
The primary purpose of this study is to establish normal values for the ratio of the fetal Crown-Rump Length (CRL) to the yolk sac (YS) diameter during the first trimester of normal pregnancy and determine whether it correlates with gestational age
The patients were distributed based on their gestational age intervals: N1 for 5-5 6/7 weeks, N2 for 6- 6 6/7 weeks, N3 for Copyright © All rights are reserved by : Daniel Faustin
Summary
A wanted pregnancy is typically viewed as a time filled with excitement, but the uncertainty about its outcome can be quite worrisome to the patient. The yolk sac is the primary source of nutrition, metabolic, immunologic, excretory, and hematopoietic functions prior to placental development, and the CRL is known to accurately correlate with gestational age during the first trimester of pregnancy [6,7,8,9,10]. While these measurements have typically been looked at individually, the current understanding of the relationships between them is limited. The primary purpose of this study is to establish normal values for the ratio of the fetal Crown-Rump Length (CRL) to the yolk sac (YS) diameter during the first trimester of normal pregnancy and determine whether it correlates with gestational age
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