Objective:To investigate the correlation between iodine nutrition level and thyroid function in women in early pregnancy and to analyze the risk factors associated with adverse pregnancy outcomes.Meth-ods:A retrospective analysis of 566 early pregnant women who underwent routine prenatal examinations from Oc-tober 2020 to May 2022 in Peking Union Medical College Hospital.Their general clinical information,urinary iodine concentration and thyroid function were collected to determine the iodine nutritional status of pregnant women in early pregnancy.According to different iodine nutrient levels,they were divided into the iodine deficiency group(UIC＜150 μg/g),iodine beyond appropriate group(250 μg/g ≤ UIC＜500 μg/g),iodine excess group(UIC ≥500 μg/g),iodine appropriate group(150 μg/g≤UIC＜250 μg/g)and iodine nutrition abnormality group(inclu-ding iodine deficiency,iodine beyond appropriate,and iodine excess).The incidence of thyroid disease was com-pared and analyzed.Logistic regression analysis was used to analyze the risk factors of the adverse pregnancy outcomes(including hypertensive disorders in pregnancy,gestational diabetes mellitus,preterm delivery,miscar-riage,and low birth weight infants).Results:①The median urinary iodine/creatinine ratio of the 566 pregnant women in early pregnancy was 99 μg/g,indicating an overall iodine deficiency level.The abnormal rate of iodine nutrition was 82.9％(including 73.0％in iodine deficiency group,7.4％in iodine beyond appropriate group and 2.5％in iodine excess group),but only 17.1％in appropriate group.②There was no significant difference in the incidence of thyroid dysfunction(including hypothyroidism,subclinical hypothyroidism,and simple positive TPO-Ab)among groups with different levels of iodine nutrition(P＞0.05).However,the incidence of thyroid dys-function in pregnant women with iodine nutrition abnormalitieswas higher than that in pregnant women with moder-ate iodine and the difference was statistically significant(20.3％vs.11.3％,x2=4.198,P=0.04).③Multivariate Logistic regression analysis showed that age(≥35 years),body mass index(≥24 kg/m2)and abnormal iodine nutrition were independent risk factors of the adverse pregnancy outcomes(OR＞1,P＜0.05).Conclusions:The rate of abnormal iodine nutrition in early pregnancy is more than 80％,indicating an overall iodine deficiency state Abnormal iodine nutrition is a risk factor of adverse pregnancy outcomes.It is recommended to monitor the iodine nutrition level of pregnant women in early pregnancy,provide iodine supplementation or low iodine diet according to different iodine nutrition levels,correct abnormal iodine nutrition during pregnancy,and strengthen health educa-tion intervention to improve pregnancy outcomes.

Objective:To investigate the correlation between iodine nutrition level and thyroid function in women in early pregnancy and to analyze the risk factors associated with adverse pregnancy outcomes.Meth-ods:A retrospective analysis of 566 early pregnant women who underwent routine prenatal examinations from Oc-tober 2020 to May 2022 in Peking Union Medical College Hospital.Their general clinical information,urinary iodine concentration and thyroid function were collected to determine the iodine nutritional status of pregnant women in early pregnancy.According to different iodine nutrient levels,they were divided into the iodine deficiency group(UIC＜150 μg/g),iodine beyond appropriate group(250 μg/g ≤ UIC＜500 μg/g),iodine excess group(UIC ≥500 μg/g),iodine appropriate group(150 μg/g≤UIC＜250 μg/g)and iodine nutrition abnormality group(inclu-ding iodine deficiency,iodine beyond appropriate,and iodine excess).The incidence of thyroid disease was com-pared and analyzed.Logistic regression analysis was used to analyze the risk factors of the adverse pregnancy outcomes(including hypertensive disorders in pregnancy,gestational diabetes mellitus,preterm delivery,miscar-riage,and low birth weight infants).Results:①The median urinary iodine/creatinine ratio of the 566 pregnant women in early pregnancy was 99 μg/g,indicating an overall iodine deficiency level.The abnormal rate of iodine nutrition was 82.9％(including 73.0％in iodine deficiency group,7.4％in iodine beyond appropriate group and 2.5％in iodine excess group),but only 17.1％in appropriate group.②There was no significant difference in the incidence of thyroid dysfunction(including hypothyroidism,subclinical hypothyroidism,and simple positive TPO-Ab)among groups with different levels of iodine nutrition(P＞0.05).However,the incidence of thyroid dys-function in pregnant women with iodine nutrition abnormalitieswas higher than that in pregnant women with moder-ate iodine and the difference was statistically significant(20.3％vs.11.3％,x2=4.198,P=0.04).③Multivariate Logistic regression analysis showed that age(≥35 years),body mass index(≥24 kg/m2)and abnormal iodine nutrition were independent risk factors of the adverse pregnancy outcomes(OR＞1,P＜0.05).Conclusions:The rate of abnormal iodine nutrition in early pregnancy is more than 80％,indicating an overall iodine deficiency state Abnormal iodine nutrition is a risk factor of adverse pregnancy outcomes.It is recommended to monitor the iodine nutrition level of pregnant women in early pregnancy,provide iodine supplementation or low iodine diet according to different iodine nutrition levels,correct abnormal iodine nutrition during pregnancy,and strengthen health educa-tion intervention to improve pregnancy outcomes.

Objective:To investigate the correlation between iodine nutrition level and thyroid function in women in early pregnancy and to analyze the risk factors associated with adverse pregnancy outcomes.Meth-ods:A retrospective analysis of 566 early pregnant women who underwent routine prenatal examinations from Oc-tober 2020 to May 2022 in Peking Union Medical College Hospital.Their general clinical information,urinary iodine concentration and thyroid function were collected to determine the iodine nutritional status of pregnant women in early pregnancy.According to different iodine nutrient levels,they were divided into the iodine deficiency group(UIC＜150 μg/g),iodine beyond appropriate group(250 μg/g ≤ UIC＜500 μg/g),iodine excess group(UIC ≥500 μg/g),iodine appropriate group(150 μg/g≤UIC＜250 μg/g)and iodine nutrition abnormality group(inclu-ding iodine deficiency,iodine beyond appropriate,and iodine excess).The incidence of thyroid disease was com-pared and analyzed.Logistic regression analysis was used to analyze the risk factors of the adverse pregnancy outcomes(including hypertensive disorders in pregnancy,gestational diabetes mellitus,preterm delivery,miscar-riage,and low birth weight infants).Results:①The median urinary iodine/creatinine ratio of the 566 pregnant women in early pregnancy was 99 μg/g,indicating an overall iodine deficiency level.The abnormal rate of iodine nutrition was 82.9％(including 73.0％in iodine deficiency group,7.4％in iodine beyond appropriate group and 2.5％in iodine excess group),but only 17.1％in appropriate group.②There was no significant difference in the incidence of thyroid dysfunction(including hypothyroidism,subclinical hypothyroidism,and simple positive TPO-Ab)among groups with different levels of iodine nutrition(P＞0.05).However,the incidence of thyroid dys-function in pregnant women with iodine nutrition abnormalitieswas higher than that in pregnant women with moder-ate iodine and the difference was statistically significant(20.3％vs.11.3％,x2=4.198,P=0.04).③Multivariate Logistic regression analysis showed that age(≥35 years),body mass index(≥24 kg/m2)and abnormal iodine nutrition were independent risk factors of the adverse pregnancy outcomes(OR＞1,P＜0.05).Conclusions:The rate of abnormal iodine nutrition in early pregnancy is more than 80％,indicating an overall iodine deficiency state Abnormal iodine nutrition is a risk factor of adverse pregnancy outcomes.It is recommended to monitor the iodine nutrition level of pregnant women in early pregnancy,provide iodine supplementation or low iodine diet according to different iodine nutrition levels,correct abnormal iodine nutrition during pregnancy,and strengthen health educa-tion intervention to improve pregnancy outcomes.

Objective:To investigate the correlation between iodine nutrition level and thyroid function in women in early pregnancy and to analyze the risk factors associated with adverse pregnancy outcomes.Meth-ods:A retrospective analysis of 566 early pregnant women who underwent routine prenatal examinations from Oc-tober 2020 to May 2022 in Peking Union Medical College Hospital.Their general clinical information,urinary iodine concentration and thyroid function were collected to determine the iodine nutritional status of pregnant women in early pregnancy.According to different iodine nutrient levels,they were divided into the iodine deficiency group(UIC＜150 μg/g),iodine beyond appropriate group(250 μg/g ≤ UIC＜500 μg/g),iodine excess group(UIC ≥500 μg/g),iodine appropriate group(150 μg/g≤UIC＜250 μg/g)and iodine nutrition abnormality group(inclu-ding iodine deficiency,iodine beyond appropriate,and iodine excess).The incidence of thyroid disease was com-pared and analyzed.Logistic regression analysis was used to analyze the risk factors of the adverse pregnancy outcomes(including hypertensive disorders in pregnancy,gestational diabetes mellitus,preterm delivery,miscar-riage,and low birth weight infants).Results:①The median urinary iodine/creatinine ratio of the 566 pregnant women in early pregnancy was 99 μg/g,indicating an overall iodine deficiency level.The abnormal rate of iodine nutrition was 82.9％(including 73.0％in iodine deficiency group,7.4％in iodine beyond appropriate group and 2.5％in iodine excess group),but only 17.1％in appropriate group.②There was no significant difference in the incidence of thyroid dysfunction(including hypothyroidism,subclinical hypothyroidism,and simple positive TPO-Ab)among groups with different levels of iodine nutrition(P＞0.05).However,the incidence of thyroid dys-function in pregnant women with iodine nutrition abnormalitieswas higher than that in pregnant women with moder-ate iodine and the difference was statistically significant(20.3％vs.11.3％,x2=4.198,P=0.04).③Multivariate Logistic regression analysis showed that age(≥35 years),body mass index(≥24 kg/m2)and abnormal iodine nutrition were independent risk factors of the adverse pregnancy outcomes(OR＞1,P＜0.05).Conclusions:The rate of abnormal iodine nutrition in early pregnancy is more than 80％,indicating an overall iodine deficiency state Abnormal iodine nutrition is a risk factor of adverse pregnancy outcomes.It is recommended to monitor the iodine nutrition level of pregnant women in early pregnancy,provide iodine supplementation or low iodine diet according to different iodine nutrition levels,correct abnormal iodine nutrition during pregnancy,and strengthen health educa-tion intervention to improve pregnancy outcomes.

【Objective】 To analyze the genetic variation characteristics and clinical phenotypes of a family with primary microcephaly (MCPH) caused by RTTN gene variation, and to provide reference for genetic counseling and prenatal diagnosis. 【Methods】 Clinical data of the three patients (including 2 fetuses and 2-year-old proband,and one fetus with clinical diagnosis) and their parents were collected and analyzed. Two of the children and their parents were tested by trio whole exome sequencing (trio-WES), sanger sequencing validation sites, and the hazard of their compound heterozygous variants was predicted. Literature review was conducted through domestic and international databases to collect reported RTTN gene mutation cases. 【Results】 Three patients in this family had anomalies of the septum pellucidum, hypoplasia of the corpus callosum and other brain malformations during fetal period. The proband (G2) and fetus (G3) showed intrauterine growth retardation and MCPH in late pregnancy; besides, G2 was born with global developmental delay. Trio-WES detected a c.2101(exon16)C>T(p.Arg701Ter,1526) nonsense and a c.2863(exon22)G>A(p.Glu955Lys)missense in the RTTN gene of G2 and G3, which were inherited from their father and mother, forming a compound heterozygous variant. According to the American College of Medical Genetics and Genomics (ACMG) variant classification guidelines, two variants were likely to be pathogenic (LP) and uncertain significance (VUS). Among them, c.2863(exon22)G>A was a newly discovered missense, which was predicted by the software to be harmful to the gene product. 【Conclusions】 Complex heterozygous variations of RTTN gene (c.2101C>T and c.2863G>A) are the genetic cause of MCPH in this family. This report has enriched the variation spectrum of RTTN gene, provided guidance for prenatal diagnosis and reproduction of this family, as well as material and reference for further understanding of the diseases caused by this gene mutation.

Epidural labor analgesia aims to provide effective medical services to alleviate labor pain in parturients, while adhering to the principles of voluntary participation and clinical safety. In 2018, Peking Union Medical College Hospital(PUMCH)became one of the first pilot units for labor analgesia in China, and has achieved satisfactory results in high-quality development of labor analgesia. This article mainly introduces the achievements and experience of labor analgesia at PUMCH, including: (1) prioritizing maternal and infant safety, arranging personnel rationally, and developing standardized treatment processes through multidisciplinary collaboration to ensure safe and comfortable childbirth; (2) leveraging the hospital's comprehensive capabilities in emergency treatment, and improving collaborative rescue plans for critically ill parturients and newborns; (3) implementing advanced teaching methods to effectively train and conduct simulated drills for labor analgesia and rescue of critically ill parturients; (4) conducting patient education and informative lectures to help parturients acquire a scientific understanding of labor analgesia. We hope that this experience can provide reference and inspiration for other hospitals.

Objective:To investigate the correlation between iodine nutrition level and thyroid function in women in early pregnancy and to analyze the risk factors associated with adverse pregnancy outcomes.Meth-ods:A retrospective analysis of 566 early pregnant women who underwent routine prenatal examinations from Oc-tober 2020 to May 2022 in Peking Union Medical College Hospital.Their general clinical information,urinary iodine concentration and thyroid function were collected to determine the iodine nutritional status of pregnant women in early pregnancy.According to different iodine nutrient levels,they were divided into the iodine deficiency group(UIC＜150 μg/g),iodine beyond appropriate group(250 μg/g ≤ UIC＜500 μg/g),iodine excess group(UIC ≥500 μg/g),iodine appropriate group(150 μg/g≤UIC＜250 μg/g)and iodine nutrition abnormality group(inclu-ding iodine deficiency,iodine beyond appropriate,and iodine excess).The incidence of thyroid disease was com-pared and analyzed.Logistic regression analysis was used to analyze the risk factors of the adverse pregnancy outcomes(including hypertensive disorders in pregnancy,gestational diabetes mellitus,preterm delivery,miscar-riage,and low birth weight infants).Results:①The median urinary iodine/creatinine ratio of the 566 pregnant women in early pregnancy was 99 μg/g,indicating an overall iodine deficiency level.The abnormal rate of iodine nutrition was 82.9％(including 73.0％in iodine deficiency group,7.4％in iodine beyond appropriate group and 2.5％in iodine excess group),but only 17.1％in appropriate group.②There was no significant difference in the incidence of thyroid dysfunction(including hypothyroidism,subclinical hypothyroidism,and simple positive TPO-Ab)among groups with different levels of iodine nutrition(P＞0.05).However,the incidence of thyroid dys-function in pregnant women with iodine nutrition abnormalitieswas higher than that in pregnant women with moder-ate iodine and the difference was statistically significant(20.3％vs.11.3％,x2=4.198,P=0.04).③Multivariate Logistic regression analysis showed that age(≥35 years),body mass index(≥24 kg/m2)and abnormal iodine nutrition were independent risk factors of the adverse pregnancy outcomes(OR＞1,P＜0.05).Conclusions:The rate of abnormal iodine nutrition in early pregnancy is more than 80％,indicating an overall iodine deficiency state Abnormal iodine nutrition is a risk factor of adverse pregnancy outcomes.It is recommended to monitor the iodine nutrition level of pregnant women in early pregnancy,provide iodine supplementation or low iodine diet according to different iodine nutrition levels,correct abnormal iodine nutrition during pregnancy,and strengthen health educa-tion intervention to improve pregnancy outcomes.

Objective:To investigate the correlation between iodine nutrition level and thyroid function in women in early pregnancy and to analyze the risk factors associated with adverse pregnancy outcomes.Meth-ods:A retrospective analysis of 566 early pregnant women who underwent routine prenatal examinations from Oc-tober 2020 to May 2022 in Peking Union Medical College Hospital.Their general clinical information,urinary iodine concentration and thyroid function were collected to determine the iodine nutritional status of pregnant women in early pregnancy.According to different iodine nutrient levels,they were divided into the iodine deficiency group(UIC＜150 μg/g),iodine beyond appropriate group(250 μg/g ≤ UIC＜500 μg/g),iodine excess group(UIC ≥500 μg/g),iodine appropriate group(150 μg/g≤UIC＜250 μg/g)and iodine nutrition abnormality group(inclu-ding iodine deficiency,iodine beyond appropriate,and iodine excess).The incidence of thyroid disease was com-pared and analyzed.Logistic regression analysis was used to analyze the risk factors of the adverse pregnancy outcomes(including hypertensive disorders in pregnancy,gestational diabetes mellitus,preterm delivery,miscar-riage,and low birth weight infants).Results:①The median urinary iodine/creatinine ratio of the 566 pregnant women in early pregnancy was 99 μg/g,indicating an overall iodine deficiency level.The abnormal rate of iodine nutrition was 82.9％(including 73.0％in iodine deficiency group,7.4％in iodine beyond appropriate group and 2.5％in iodine excess group),but only 17.1％in appropriate group.②There was no significant difference in the incidence of thyroid dysfunction(including hypothyroidism,subclinical hypothyroidism,and simple positive TPO-Ab)among groups with different levels of iodine nutrition(P＞0.05).However,the incidence of thyroid dys-function in pregnant women with iodine nutrition abnormalitieswas higher than that in pregnant women with moder-ate iodine and the difference was statistically significant(20.3％vs.11.3％,x2=4.198,P=0.04).③Multivariate Logistic regression analysis showed that age(≥35 years),body mass index(≥24 kg/m2)and abnormal iodine nutrition were independent risk factors of the adverse pregnancy outcomes(OR＞1,P＜0.05).Conclusions:The rate of abnormal iodine nutrition in early pregnancy is more than 80％,indicating an overall iodine deficiency state Abnormal iodine nutrition is a risk factor of adverse pregnancy outcomes.It is recommended to monitor the iodine nutrition level of pregnant women in early pregnancy,provide iodine supplementation or low iodine diet according to different iodine nutrition levels,correct abnormal iodine nutrition during pregnancy,and strengthen health educa-tion intervention to improve pregnancy outcomes.

Objective:To investigate the correlation between iodine nutrition level and thyroid function in women in early pregnancy and to analyze the risk factors associated with adverse pregnancy outcomes.Meth-ods:A retrospective analysis of 566 early pregnant women who underwent routine prenatal examinations from Oc-tober 2020 to May 2022 in Peking Union Medical College Hospital.Their general clinical information,urinary iodine concentration and thyroid function were collected to determine the iodine nutritional status of pregnant women in early pregnancy.According to different iodine nutrient levels,they were divided into the iodine deficiency group(UIC＜150 μg/g),iodine beyond appropriate group(250 μg/g ≤ UIC＜500 μg/g),iodine excess group(UIC ≥500 μg/g),iodine appropriate group(150 μg/g≤UIC＜250 μg/g)and iodine nutrition abnormality group(inclu-ding iodine deficiency,iodine beyond appropriate,and iodine excess).The incidence of thyroid disease was com-pared and analyzed.Logistic regression analysis was used to analyze the risk factors of the adverse pregnancy outcomes(including hypertensive disorders in pregnancy,gestational diabetes mellitus,preterm delivery,miscar-riage,and low birth weight infants).Results:①The median urinary iodine/creatinine ratio of the 566 pregnant women in early pregnancy was 99 μg/g,indicating an overall iodine deficiency level.The abnormal rate of iodine nutrition was 82.9％(including 73.0％in iodine deficiency group,7.4％in iodine beyond appropriate group and 2.5％in iodine excess group),but only 17.1％in appropriate group.②There was no significant difference in the incidence of thyroid dysfunction(including hypothyroidism,subclinical hypothyroidism,and simple positive TPO-Ab)among groups with different levels of iodine nutrition(P＞0.05).However,the incidence of thyroid dys-function in pregnant women with iodine nutrition abnormalitieswas higher than that in pregnant women with moder-ate iodine and the difference was statistically significant(20.3％vs.11.3％,x2=4.198,P=0.04).③Multivariate Logistic regression analysis showed that age(≥35 years),body mass index(≥24 kg/m2)and abnormal iodine nutrition were independent risk factors of the adverse pregnancy outcomes(OR＞1,P＜0.05).Conclusions:The rate of abnormal iodine nutrition in early pregnancy is more than 80％,indicating an overall iodine deficiency state Abnormal iodine nutrition is a risk factor of adverse pregnancy outcomes.It is recommended to monitor the iodine nutrition level of pregnant women in early pregnancy,provide iodine supplementation or low iodine diet according to different iodine nutrition levels,correct abnormal iodine nutrition during pregnancy,and strengthen health educa-tion intervention to improve pregnancy outcomes.

Objective:To investigate the correlation between iodine nutrition level and thyroid function in women in early pregnancy and to analyze the risk factors associated with adverse pregnancy outcomes.Meth-ods:A retrospective analysis of 566 early pregnant women who underwent routine prenatal examinations from Oc-tober 2020 to May 2022 in Peking Union Medical College Hospital.Their general clinical information,urinary iodine concentration and thyroid function were collected to determine the iodine nutritional status of pregnant women in early pregnancy.According to different iodine nutrient levels,they were divided into the iodine deficiency group(UIC＜150 μg/g),iodine beyond appropriate group(250 μg/g ≤ UIC＜500 μg/g),iodine excess group(UIC ≥500 μg/g),iodine appropriate group(150 μg/g≤UIC＜250 μg/g)and iodine nutrition abnormality group(inclu-ding iodine deficiency,iodine beyond appropriate,and iodine excess).The incidence of thyroid disease was com-pared and analyzed.Logistic regression analysis was used to analyze the risk factors of the adverse pregnancy outcomes(including hypertensive disorders in pregnancy,gestational diabetes mellitus,preterm delivery,miscar-riage,and low birth weight infants).Results:①The median urinary iodine/creatinine ratio of the 566 pregnant women in early pregnancy was 99 μg/g,indicating an overall iodine deficiency level.The abnormal rate of iodine nutrition was 82.9％(including 73.0％in iodine deficiency group,7.4％in iodine beyond appropriate group and 2.5％in iodine excess group),but only 17.1％in appropriate group.②There was no significant difference in the incidence of thyroid dysfunction(including hypothyroidism,subclinical hypothyroidism,and simple positive TPO-Ab)among groups with different levels of iodine nutrition(P＞0.05).However,the incidence of thyroid dys-function in pregnant women with iodine nutrition abnormalitieswas higher than that in pregnant women with moder-ate iodine and the difference was statistically significant(20.3％vs.11.3％,x2=4.198,P=0.04).③Multivariate Logistic regression analysis showed that age(≥35 years),body mass index(≥24 kg/m2)and abnormal iodine nutrition were independent risk factors of the adverse pregnancy outcomes(OR＞1,P＜0.05).Conclusions:The rate of abnormal iodine nutrition in early pregnancy is more than 80％,indicating an overall iodine deficiency state Abnormal iodine nutrition is a risk factor of adverse pregnancy outcomes.It is recommended to monitor the iodine nutrition level of pregnant women in early pregnancy,provide iodine supplementation or low iodine diet according to different iodine nutrition levels,correct abnormal iodine nutrition during pregnancy,and strengthen health educa-tion intervention to improve pregnancy outcomes.