<strong>Introduction</strong> <span style="font-family:""><span style="font-family:Verdana;">Accurate pregnancy dating is important for many aspects of </span><...<strong>Introduction</strong> <span style="font-family:""><span style="font-family:Verdana;">Accurate pregnancy dating is important for many aspects of </span><span style="font-family:Verdana;">obstetric care at individual level as well as population level. Traditionally</span></span><span style="font-family:Verdana;">,</span><span style="font-family:Verdana;"> pregnancy</span><span style="font-family:Verdana;"> dating has done by adding 9 months and 7 days to the last menstrual period (LMP) using Naegele’s formula. Determination of gestational age by ultrasound is more precise. Most commonly used parameters are mean sac diameter, gestation sac volume, crown</span><span style="font-family:Verdana;">-</span><span style="font-family:Verdana;">rump length (CRL), biparietal diameter (BPD), head circumference (HC) and femur length (FL). After 24 weeks</span><span style="font-family:Verdana;">,</span><span style="font-family:Verdana;"> gestational age cannot be accurately determined by ultrasound scans. The biological variability of CRL is small and growth is very rapid. There are </span><span style="font-family:Verdana;">many factors</span><span style="font-family:"color:red;"> </span><span style="font-family:""><span style="font-family:Verdana;">that</span><span style="color:red;"> </span></span><span style="font-family:""><span style="font-family:Verdana;">can affect CRL such as measurement errors, differences in growth rates between individuals, fetal sex and maternal conditions such as diabetes </span><span style="font-family:Verdana;">mellitus. A correctly performed measurement of CRL is the most accurate way</span><span style="font-family:Verdana;"> of estimating the gestational age in early pregnancy from 8 weeks to 13 weeks + 6 days. </span><b><span style="font-family:Verdana;">Objectives </span></b><span style="font-family:Verdana;">Our study aims were to prepare a new Crown Rump Length chart with Sri Lankan population data and to compare </span><span><span style="font-family:Verdana;">new CRL chart with ex展开更多
目的制定深圳新生儿宫内生长曲线,了解深圳新生儿宫内生长水平。方法采用横断面时间段整群取样调查方法,于2013年4月至2015年9月在深圳市两家医院完成了胎龄27~42周活产单胎新生儿16 887例(男9418例,女7469例)现场调查。体重、身长、头...目的制定深圳新生儿宫内生长曲线,了解深圳新生儿宫内生长水平。方法采用横断面时间段整群取样调查方法,于2013年4月至2015年9月在深圳市两家医院完成了胎龄27~42周活产单胎新生儿16 887例(男9418例,女7469例)现场调查。体重、身长、头围、胸围、顶臀长5项指标曲线拟合应用Lambda Mu Sigma(LMS)法。结果制定了深圳胎龄27~42周新生儿(男、女、性别混合)三分组体重、身长、头围、胸围、顶臀长5项指标宫内生长第3~97百分位曲线。上述5项曲线男性明显高于女性。该组新生儿体重曲线形态及变化趋势与中国新生儿协作网曲线基本一致。结论该研究制定的深圳胎龄27~42周新生儿体重、身长、头围、胸围、顶臀长宫内生长百分位曲线可为新生儿科医生临床实践工作提供参考。展开更多
文摘<strong>Introduction</strong> <span style="font-family:""><span style="font-family:Verdana;">Accurate pregnancy dating is important for many aspects of </span><span style="font-family:Verdana;">obstetric care at individual level as well as population level. Traditionally</span></span><span style="font-family:Verdana;">,</span><span style="font-family:Verdana;"> pregnancy</span><span style="font-family:Verdana;"> dating has done by adding 9 months and 7 days to the last menstrual period (LMP) using Naegele’s formula. Determination of gestational age by ultrasound is more precise. Most commonly used parameters are mean sac diameter, gestation sac volume, crown</span><span style="font-family:Verdana;">-</span><span style="font-family:Verdana;">rump length (CRL), biparietal diameter (BPD), head circumference (HC) and femur length (FL). After 24 weeks</span><span style="font-family:Verdana;">,</span><span style="font-family:Verdana;"> gestational age cannot be accurately determined by ultrasound scans. The biological variability of CRL is small and growth is very rapid. There are </span><span style="font-family:Verdana;">many factors</span><span style="font-family:"color:red;"> </span><span style="font-family:""><span style="font-family:Verdana;">that</span><span style="color:red;"> </span></span><span style="font-family:""><span style="font-family:Verdana;">can affect CRL such as measurement errors, differences in growth rates between individuals, fetal sex and maternal conditions such as diabetes </span><span style="font-family:Verdana;">mellitus. A correctly performed measurement of CRL is the most accurate way</span><span style="font-family:Verdana;"> of estimating the gestational age in early pregnancy from 8 weeks to 13 weeks + 6 days. </span><b><span style="font-family:Verdana;">Objectives </span></b><span style="font-family:Verdana;">Our study aims were to prepare a new Crown Rump Length chart with Sri Lankan population data and to compare </span><span><span style="font-family:Verdana;">new CRL chart with ex
文摘目的制定深圳新生儿宫内生长曲线,了解深圳新生儿宫内生长水平。方法采用横断面时间段整群取样调查方法,于2013年4月至2015年9月在深圳市两家医院完成了胎龄27~42周活产单胎新生儿16 887例(男9418例,女7469例)现场调查。体重、身长、头围、胸围、顶臀长5项指标曲线拟合应用Lambda Mu Sigma(LMS)法。结果制定了深圳胎龄27~42周新生儿(男、女、性别混合)三分组体重、身长、头围、胸围、顶臀长5项指标宫内生长第3~97百分位曲线。上述5项曲线男性明显高于女性。该组新生儿体重曲线形态及变化趋势与中国新生儿协作网曲线基本一致。结论该研究制定的深圳胎龄27~42周新生儿体重、身长、头围、胸围、顶臀长宫内生长百分位曲线可为新生儿科医生临床实践工作提供参考。
