• 한국간호교육학회지
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• 제18권1호
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• pp.95-101
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• 2012

Purpose: This study aimed to analyze the impact of advanced maternal and paternal age on perinatal outcome in Korea. Methods: We conducted a retrospective study involving 1,622 Korean women who delivered at M Woman Hospital from January to December 2010 and their spouses were included. We obtained obstetrics database which included demographic characteristics, medical and obstetrics history, course of the current pregnancy and advised perinatal outcome. Multivariable logistic regression was used to adjust for potential confounding variables. Results: Women giving birth age 35 or older were statistically significant in paternal age, gravidity, spontaneous abortion experience, method of conception, method of delivery, and multiple gestation compared to women aged <34 years. After adjusting for the confounding effects of maternal characteristics, women aged 35 or older were at increased risk for cesarean section delivery (adjusted OR 1.6, 95% CI 1.22-2.13) and preterm birth (adjusted OR 2.2, 95% CI 1.03-4.63). Conclusion: In this population of Korean women, advance maternal and paternal age is independently associated with specific adverse perinatal outcome, especially preterm birth and cesarean section delivery.

• Clinical and Experimental Pediatrics
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• 제50권4호
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• pp.348-354
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• 2007

목 적 : B형 간염 바이러스 주산기 감염은 현재 감소하고 있지만 HBeAg 양성 산모로부터 분만된 신생아의 10%는 예방조치에도 불구하고 보유자가 된다. 비록 예방조치 실패의 원인이 아직 불확실하나 산모의 분만시 HBV-DNA 수치의 중요성이 제시되고 있다. 본 연구는 산모의 분만시 HBV-DNA 수치가 주산기 예방조치 결과의 유용한 예측인자임을 확인하기 위하여 시행하였다. 방 법 : 주산기 예방조치의 결과를 이미 알고 있는 29명의 HBeAg 양성 산모를 선정하였다. 산모의 HBV-DNA 양을 측정하기 위하여 WHO International Standard For Hepatitis B Virus DNA For NAT Assay를 이용한 정량적 PCR을 시행하였다. 결 과 : 주산기 예방조치 실패군 산모의 로그 HBV-DNA 수치가 성공군 산모의 수치보다 유의하게 높았다(7.99 vs. 6.72, P=0.015). 주산기 예방조치 결과를 예측할 수 있는 산모의 HBV-DNA 수치의 기준은 $2.83{\times}10^7$ 개체/mL(100 pg/mL)로 정할 수 있었는데, 산모의 HBV-DNA 수치가 기준치 미만인 16명 중 예방조치에 실패한 경우는 없었으며(0%), 기준치 이상인 경우는 13명 중 5명(38.5%)이 실패하였다. 결 론 : 현재의 예방조치법으로는 분만시 높은 HBV-DNA 수치를 가지는 산모의 주산기 예방조치 결과는 좋지 않을 가능성이 높다. 따라서 주산기 예방조치의 실패율을 낮추기 위해서는 이러한 위험요인이 있는 경우에 보다 강력한 방법을 적용시켜야 하겠다.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• 제26권3호
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• pp.135-145
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• 2023

Antibiotics are frequently administered during pregnancy. Although necessary to address acute infections, their use facilitates antibiotic resistance. Other associations have also been found with the use of antibiotics, such as perturbations of gut bacteria, delays in microbial maturation, and increased risks of allergic and inflammatory diseases. Little is known about how the prenatal and perinatal administration of antibiotics to mothers affects the clinical outcomes of their offspring. A literature search was conducted of the Cochrane, Embase, and PubMed engines. The retrieved articles were reviewed by two authors and verified for relevance. The primary outcome was the effect of pre- and perinatal maternal antibiotic use on clinical outcomes. Thirty-one relevant studies were included in the meta-analysis. Various aspects are discussed, including infections, allergies, obesity, and psychosocial factors. In animal studies, antibiotic intake during pregnancy has been suggested to cause long-term alterations in immune regulation. In humans, associations have been found between antibiotic intake during pregnancy and different types of infections and an increased risk of pediatric infection-related hospitalization. A dose-dependent positive association between pre- and perinatal antibiotic use and asthma severity has been reported in animal and human studies, while positive associations with atopic dermatitis and eczema were reported by human studies. Multiple associations were identified between antibiotic intake and psychological problems in animal studies; however, relevant data from human studies are limited. However, one study reported a positive association with autism spectrum disorders. Multiple animal and human studies reported a positive association between pre- and perinatal antibiotic use by mothers and diseases in their offspring. Our findings have potentially significant clinical relevance, particularly considering the implications for health during infancy and later in life as well as the related economic burden.

• Clinical and Experimental Pediatrics
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• 제54권2호
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• pp.69-78
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• 2011

Purpose: The aim of this study was conducted to investigate the mean nRBC count in very low births weight infants (VLBWIs) and to determine the usefulness of the nRBC as an independent prognostic factors of perinatal complications in VLBWIs. Methods: This study was conducted on 112 VLBWIs who were hospitalized in the neonatal intensive care unit (NICU) of the author's hospital within the period from March 2003 to and May 2008. Based on the infants' nucleated red blood cells (nRBC) counts at birth, on the third day after birth, on the seventh day after birth, in the second week after birth, and in the fourth week after birth in the medical records, the correlation between nRBC or absolute nRBC counts with birth weight, gestational age, and other perinatal outcomes were retrospectively investigated. Results: In VLBWIs, their mean nRBC and absolute nRBC counts were showing a gradual decrease after birth, and they were consisteantly kept at low values since one week after and inversely proportional to the birth weights. The mean nRBC counts based on the stage after birth showed a significant correlation with perinatal death, necrotizing enterocolitis, and severe intraventricular hemorrhage. Conclusion: The increase in the nRBC count showed a significant correlation with having a severe intraventricular hemorrhage, necrotizing enterocolitis, and perinatal death in VLBWIs. If an increase or no decrease in the nRBC count after birth is observed, newborninfant care precautions should be required.

• Clinical and Experimental Reproductive Medicine
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• 제8권1호
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• pp.23-34
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• 1981

In order to study twin pregnancies, a retrospective survey was carried out in Yonsei University, Severance Hospital. Twin deliveries during 1967-1976 numbered altogether 264, and their relative frequency was 1.30%. Clinical palpation in addition to auscultation and roentgenologic technique had been used in the twin diagnosis. The diagnosis was made prior to delivery in 93.18% of the cases. The deliveries took place in the 37.26th (S.D. 3.95) gestational weeks on an average. The mean weights of the infants were-A (first baby) 2416.03g. (S.D. 802.61), and B (second baby) 2299.81g. (S.D. 190.31). The most common manner of twin delivery was spontaneous vaginal delivery. Cesarean section was done in 14.39%, of which the most common indication was hypotonic uterine dysfunction (34.21 %). Low one minute Apgar scores occured more often in B twins than among A twins. Breech delivery gave low one minute Apgar scores more often than did spontaneous vertex delivery in both twins. Full term twins and infants weighing more than 2500g. had fewer low one minute Apgar scores than the preterm infants and those with low birth weight. Perinatal mortality (PNM) in the total series was 14.77% (A 12.50% and B17.05%). The most common cause of perinatal mortality was prematurity in 44.87%. The worst outcome was recorded for the age groups 15-19 and ${\geqq}$40, in which perinatal mortality were 50.00%, respectively. The perinatal mortality of both A and B infants was lowest in the group diagnosed early during antenatal care before delivery. On the basis of our findings, we wish to emphasize particularly the importance of the early diagnosis of twins.

• Clinical and Experimental Reproductive Medicine
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• 제25권3호
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• pp.323-329
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• 1998

The safety of ICSI as a novel procedure of assisted fertilization may be assessed by the health of the baby born. In order to evaluate the safety of ICSI, perinatal outcome and congenital anomaly of the babies born after ICSI were compared with those of babies born after IVF (control group). We analysed the clinical data from the obstetric and pediatric records, including the information obtained through telephone. The results are as follows; Mean gestational age $({\pm}SEM)$ and birth weight in singleton pregnancy were $38.8{\pm}1.9$ weeks and $3209.7{\pm}501.9gm$ in IVF group, $39.0{\pm}2.2$ weeks and $3289.9{\pm}479.5gm$ in ICSI group, respectively. Mean gestational age and birth weight in twins were $36.8{\pm}2.1$ weeks and $2512.8{\pm}468.0gm$ in IVF group, $36.5{\pm}2.8$ weeks and $2492.7{\pm}537.1gm$ in ICSI group. In IVF group, perinatal mortality rates were 8.5 in singletons and 56.6 in twins; for the ICSI singletons and ICSI twins, the perinatal mortality rates were 11.6 and 49.0, respectively. The incidence of congenital malformations was 3.6% (8/224) in IVF group and 2.1% (4/188) in ICSI group, there was no statistical difference (p>0.05, Fisher's exact test). The incidence of major congenital anomalies was 0.9% (2/224; pulmonary artery hypoplasia, renal cystic dysplasia) in IVF group and 1.1% (2/188; holoprosencephaly, Cri du chat syndrome) in ICSI groups (p>0.05, Fisher's exact test). Similarly, there was no significant difference in incidence of minor congenital anormalies 2.7% (6/224) in IVF group and 1.1% (2/188) in ICSI group respectively (p>0.05, Fisher's exact test). In conclusion, there was no difference in the perinatal outcome and the incidence of congenital anomalies between the babies born after ICSI and those after conventional IVF.

• Clinical and Experimental Pediatrics
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• 제64권5호
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• pp.239-246
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• 2021

Background: The consequences of severe acute respiratory syndrome corona virus 2 on mother and fetus remain unknown due to a lack of robust evidence from prospective studies. Purpose: This study evaluated the effect of coronavirus disease 2019 (COVID-19) on neonatal outcomes and the scope of vertical transmission. Methods: This ambispective observational study enrolled pregnant women with COVID-19 in North India from April 1 to August 31, 2020 to evaluate neonatal outcomes and the risk of vertical transmission. Results: A total of 44 neonates born to 41 COVID-19-positive mothers were evaluated. Among them, 28 patients (68.3%) (2 sets of twins) were delivered within 7 days of testing positive for COVID-19, 23 patients (56%) (2 sets of twins) were delivered by cesarean section; 13 newborns (29.5%) had low birth weight; 7 (15.9%) were preterm; and 6 (13.6%) required neonatal intensive care unit admission, reflecting an increased incidence of cesarean delivery and low birth weight but zero neonatal mortality. Samples of cord blood, placental membrane, vaginal fluid, amniotic fluid, peritoneal fluid (in case of cesarean section), and breast milk for COVID-19 reverse transcription-polymerase chain reaction tested negative in 22 prospective delivery cases. Nasopharyngeal swabs of 2 newborns tested positive for COVID-19: one at 24 hours and the other on day 4 of life. In the former case, biological samples were not collected as the mother was asymptomatic and her COVID-19 report was available postdelivery; hence, the source of infection remained inconclusive. In the latter case, all samples tested negative, ruling out the possibility of vertical transmission. All neonates remained asymptomatic on follow-up. Conclusion: COVID-19 does not have direct adverse effects on the fetus per se. The possibility of vertical transmission is almost negligible, although results from larger trials are required to confirm our findings.

• Clinical and Experimental Reproductive Medicine
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• 제30권1호
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• pp.85-93
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• 2003

Objective : To evaluate the safety and efficacy of selective fetal reduction (SFR) and compare the outcome of twin pregnancy after SFR in multiple pregnancy induced by assisted reproductive technology (ART) with that of natural twin pregnancy. Methods : From September 1995 to March 2002 in Ajou University Hospital, SFR was performed in 79 patients whose gestational sacs were more than 3. Of these 79 patients, 47 patents resulted in twin pregnancy after SFR. SFR was performed using transvaginal intracardiac KCl injection at gestational age of $6{\sim}9$ weeks. Control group was composed of 264 patients with natural twin pregnancy, who delivered after intrauterine pregnancy at 24 weeks, from June 1994 through December 2002. We compared Obstetric and perinatal outcomes between SFR group and natural twin group. Results: Among 47 patients with twin pregnancy after SFR, 2 spontaneous abortion were occurred at intrauterine pregnancy at 8 and 19 weeks. Obstetrical and perinatal outcomes were available in 43 patients. Single intrauterine fetal death was occurred in 1 of 43 (2.3%) patients in SFR group. Incidence of preterm labor, premature rupture of membrane, preeclampsia and placenta previa were similar, but gestational diabetes mellitus (GDM) was occurred more frequently in SFR group (3 (7.0%) vs 4 (1.5%), p=0.02). Mean gestational age, mean birth weight, incidence of discordancy, use of intubation and ventilation, incidence of fetal anomaly, low (<7) Apgar score and intrauterine growth restriction were similar in both groups. Conclusion: Twin pregnancy after SFR has the increased incidence for GDM but other obstetric and perinatal outcome was similar compared with natural twin pregnancy. So SFR is a safe and effective procedure, so we suggest SFR is needed in multifetal pregnancy more than triplet.

• Pediatric Infection and Vaccine
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• 제18권1호
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• pp.85-90
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• 2011

The Joint United Nations Programme on HIV/AIDS (UNAIDS)의 통계에 의하면 2008년 한 해에 43만 명의 어린이가 HIV 에 감염된 것으로 보이며 대부분 수직감염에 의한 것으로 나타났다. 수직감염의 예방 프로그램은 이러한 감염을 줄일 수 있는 가장 효과적인 방법이다. 2009년 국립중앙의료원에는 HIV에 감염된 산모로부터 출생한 신생아 3명이 입원하였다. 이들의 산모 2명은 ARV 치료제를 투여하였고 1명은 투여하지 못했으며 3명의 환아에게는 모두 ARV 치료를 하였다. 추적관찰을 4개월에서 16개월 동안 실시한 결과 아직까지는 HIV 수직감염이 의심될 수 있는 혈청학적 검사의 특이 소견은 보이지 않고 있다. 임산부에 대한 HIV 산전검사의 확대, 조기진단 및 효과적인 ARV 치료만이 수직감염을 낮출 수 있을 것이며 저자는 이에 대한 수직감염 예방치료 3례를 경험하였기에 보고하는 바이다.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• 제34권1호
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• pp.37-44
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• 2023

Objectives: Tic disorders are highly heritable; however, growing evidence suggests that environmental factors play a significant role in their pathogenesis. Studies on these factors have been inconsistent, with conflicting results. Therefore, this study aimed to examine the associations of pre- and perinatal exposure to Tourette syndrome (TS) or chronic tic disorders (CTD) in Korean school-aged children. Methods: This case-control study used data from a large prospective cohort study. The primary outcome was TS/CTD diagnosis according to the Diagnostic and Statistical Manual of Mental Disorders, 5th edition (DSM-5) criteria and Kiddie-Schedule for Affective Disorders and Schizophrenia-Present and Lifetime Version-Korean Version. Demographic, pre-, and perinatal information was obtained from the maternal questionnaires. Data between the TS/CTD and control groups were compared using the chi-squared or Student's t-test, as appropriate. Two-step logistic regression analyses were used to test the association between TS/CTD and pre- and perinatal risk factors. Results: We included of 223 children (78 with TS/CTD and 145 controls). Significant differences in the demographic data between the two groups were observed. The male sex ratio, mean parental age, parental final education level, and family history of tics were included as confounders. In the final adjusted multivariable model, TS/CTD was significantly associated with antiemetic exposure during pregnancy (odds ratio [OR]=16.61, 95% confidence interval [CI] 1.49-185.22, p=0.02) and medically assisted reproduction (OR=7.89, 95% CI 2.28-27.28, p=0.01). Conclusion: Antiemetic exposure and medically assisted reproduction are significantly associated with the risk of TS/CTD. These results should be replicated in future prospective and gene-by-environment studies.