신경학적인 결함이 있었던 영아의 예후 판단에서 뇌량 크기의 중요성

유승택,이창우 대한소아청소년과학회 2008 Clinical and Experimental Pediatrics (CEP) Vol.51 No.11

Purpose:The development of the corpus callosum occupies the entire period of cerebral formation. The myelination pattern on magnetic resonance imaging (MRI) is very useful to evaluate neurologic development and to predict neurologic outcome in high risk infants. The thickness of the corpus callosum is believed to depend on the myelination process. It is possible to calculate the length and thickness of the corpus callosum on MRI. Thus, we can quantitatively evaluate the development of the corpus callosum. We investigated the clinical significance of measuring various portions of the corpus callosum in neonate with neurologic disorders such as hypoxic brain damage and seizure disorder. Methods:Forty-two neonates were evaluated by brain MRI. We measured the size of the genu, body, transitional zone, splenium, and length of the corpus callosum. Each measurement was divided by the total length of the corpus callosum to obtain its corrected size. The ratio of corpus callosal length and the anteroposterior diameter of the brain was also measured. Results:There was no statistical significance in the sample size of each part of the corpus callosum. However, the corrected size or the ratio of body of the corpus callosum correlated with periventricular leukomalacia and hypoxic ischemic encephalopathy. Conclusion:The abnormal size of the corpus callosum showed a good correlation with periventricular leukomalacia and hypoxic ischemic encephalopathy in neonates. We can predict clinical neurological problems by estimation of the corpus callosum in the neonatal period. (Korean J Pediatr 2008;51:1205-1210) Purpose:The development of the corpus callosum occupies the entire period of cerebral formation. The myelination pattern on magnetic resonance imaging (MRI) is very useful to evaluate neurologic development and to predict neurologic outcome in high risk infants. The thickness of the corpus callosum is believed to depend on the myelination process. It is possible to calculate the length and thickness of the corpus callosum on MRI. Thus, we can quantitatively evaluate the development of the corpus callosum. We investigated the clinical significance of measuring various portions of the corpus callosum in neonate with neurologic disorders such as hypoxic brain damage and seizure disorder. Methods:Forty-two neonates were evaluated by brain MRI. We measured the size of the genu, body, transitional zone, splenium, and length of the corpus callosum. Each measurement was divided by the total length of the corpus callosum to obtain its corrected size. The ratio of corpus callosal length and the anteroposterior diameter of the brain was also measured. Results:There was no statistical significance in the sample size of each part of the corpus callosum. However, the corrected size or the ratio of body of the corpus callosum correlated with periventricular leukomalacia and hypoxic ischemic encephalopathy. Conclusion:The abnormal size of the corpus callosum showed a good correlation with periventricular leukomalacia and hypoxic ischemic encephalopathy in neonates. We can predict clinical neurological problems by estimation of the corpus callosum in the neonatal period. (Korean J Pediatr 2008;51:1205-1210)

Copolymerization of 5,6-Dihydrodicyclopentadiene and Ethylene

유승택,나성재,유진아,이분열 한국고분자학회 2009 한국고분자학회 학술대회 연구논문 초록집 Vol.2009 No.4

A Case of Intussusception Caused by Meckel's Diverticulum in a Newborn

유승택,오연규,박원철,김은아,이창우,윤향석 대한소아청소년과학회 2005 Clinical and Experimental Pediatrics (CEP) Vol.48 No.8

Intussusception and Meckel's diverticulum are very rare disorders in intrauterine or neonatal periods, which are causes of intestinal obstruction. We experienced a case of intussusception due to Meckel's diverticulum which caused intestinal obstruction in the neonate who had bilious vomiting a few hours after birth. We report this case with a brief review of the literature 신생아에서 멕켈게실에 의한 장중첩증으로 장폐쇄를 유발한 경우는 매우 드물다. 신생아기에 장폐쇄의 원인으로 장중첩증은 장폐쇄의 원인 중 단지 3%, 멕켈게실은 0.3% 정도만이 보고되었다. 저자들은 출생 수시간 후부터 담즙성 구토를 보인 신생아에서 복부 초음파, 대장소영술 및 복부 전산화단층촬영상에서도 확진하지 못하고 시험적 개복술을 시행하여 비로소 확인된 태생기에 발생한 멕켈게실에 의한 장중첩증 1례를 경험하였기에 보고하는 바이다.

재발성 가와사끼병의 임상양상과 검사소견

유승택,최은정,이창우,오연균,박승택,윤향석 圓光大學校 醫科學硏究所 2003 圓光醫科學 Vol.18 No.2

영아기에 진단된 Swyer 증후군

유승택 ( Seung Taek Yu ),오일지 ( Il Ji Oh ),최은정 ( Eun Jung Choi ),홍명은 ( Myoung Eun Hong ),김종건 ( Jong Geon Kim ),이창우 ( Chang Woo Lee ),오연균 ( Yeon Kyun Oh ) 대한주산의학회 2005 Perinatology Vol.16 No.2

Swyer syndrome is characterized by a female phenotype, normal to tall stature, sexual infantilism with primary amenorrhea and 46,XY karyotype. The internal genitalia are female with uterus and full vagina, but have no ovaries or testis. Swyer syndrome is often diagnosed when young adults are evaluated for delayed puberty, as menstruation dose not occur naturally. We experienced a case of Swyer syndrome diagnosed incidentally in course of evaluating intrauterine growth retardation and delayed growth in infant. So, we report a case of Swyer syndrome with a brief review of literatures.

귓바퀴 앞 쥐젖을 동반한 신생아의 신 기형 검사

홍명은,유승택,최은정,이창우,박승택,오연균 대한소아과학회 2004 小兒科 Vol.47 No.5

귓바퀴 앞 쥐젖을 동반한 신생아의 신 기형 검사

홍명은,유승택,최은정,이창우,박승택*,오연균* 대한소아청소년과학회 2004 Clinical and Experimental Pediatrics (CEP) Vol.47 No.5

Purpose:The aim of this study was to determine the role of renal ultrasonography in neonates with isolated preauricular tags. Methods:We performed a retrospective study of 10,997 newborn infants delivered from January 1995 to June 2003 in Wonkwang University Hospital. Nineteen newborns born with isolated preauricular tags were assessed for renal anomalies by performing renal ultrasonography within one week after birth. The study group was compared with a control group of 25 healthy neonates without preauricular tags during the same period, also using renal ultrasonography. Results:Preauricular tags were detected in 19 of 10,997(0.17%) neonates; 57.9% were found on the right side. Renal anomalies in neonates with isolated preauricular tags were detected in four infants (21.1%); this incidence was higher, but was not significant, compared with the control group. Types of anomalies were mild hydronephrosis of grade 1(3 cases) and 2(1 case) which were normalized within one year. Conclusion:Routine renal ultrasonography is not recommended for newborn infant with isolated preauricular tags. 목 적 : 건강하게 출생한 신생아에서 단순하게 귓바퀴 앞 쥐젖만을 동반한 경우에 신 기형이 동반되는가를 조사하고자 하였다.방 법 : 1995년 1월부터 2003년 6월까지 만 8년 6개월간 원광대학 병원에서 출생한 신생아 중 귓바퀴 앞 쥐젖을 동반하여 신 초음파를 시행하였던 신생아를 대상으로 차트를 검토하여 후향적으로 조사하였다. 염색체 이상, 귀의 이상 그리고 주 선천성 기형이 동반된 경우는 제외하였으며, 같은 시기에 단지 구토만을 주소로 초음파를 시행하였던 신생아를 그 비교 군으로 하였다.

A case of severe transient hyperammonemia in a newborn

황민우,유승택,오연균,Hwang, Min-Woo,Yu, Seung-Taek,Oh, Yeon-Kyun The Korean Pediatric Society 2010 Clinical and Experimental Pediatrics (CEP) Vol.53 No.4

신생아 일과성 고암모니아혈증은 고암모니아혈증을 특징으로 하며 대부분 호흡곤란 치료를 받는 미숙아에서 발생한다. 발생원인은 정확히 알려져 있지 않으나 생후 2-3일에 호흡 곤란, 기면, 경련, 혼수 등의 임상 증상을 보이고, 생화학적 검사 상 혈중암모니아 농도가 현저히 증가하며 요소회로 효소 치는 정상을 보인다. 치료가 늦으면 사망에 이르는 응급을 요하는 질환이나 즉각적이고 적절한 치료 시 신경학적 손상을 남기지 않고 호전 가능하다. 저자들은 호흡곤란을 보여 호흡기 치료를 받던 35주 미숙아에서 48시간 내에 경련과 함께 혼수상태에 빠지고 검사상 고암모니아혈증을 보여 신투석 등의 치료 후 회복되었으며 2년 추적관찰에서 정상을 보인 환아를 보고하는 바이다. Transient hyperammonemia in a newborn is an overwhelming disease manifested by hyperammonemic coma. The majority of affected newborns are premature and have mild respiratory syndrome. The diagnosis may be difficult to determine. This metabolic disorder is primarily characterized by severe hyperammonemia in the postnatal period, coma, absence of abnormal organic aciduria and normal activity of the enzymes of the urea cycle. Hyperammonemic coma may develop within 2-3 days of life, although its etiology is unknown. Laboratory studies reveal marked hyperammonemia (>$4,000{\mu}mol/L$). The degree of neurologic impairment and developmental delay in this disorder depends on the duration of hyperammonemic coma. Moreover, the infant may succumb to the disease if treatment is not started immediately and continued vigorously. Hyperammonemic coma as a medical emergency requires dialysis therapy. Here, we report a case of severe transient hyperammonemia in a preterm infant (35 week of gestation) presented with respiratory distress, seizure, and deep coma within 48 hours and required ventilatory assistance and marked elevated plasma ammonia levels. He survived with aggressive therapy including peritoneal dialysis, and was followed 2 years later without sequelae.

예방접종과 관련된 소아 혈소판 감소 자반병의 임상적 특성

이완수,유승택,신새론,최두영 대한소아청소년과학회 2008 Clinical and Experimental Pediatrics (CEP) Vol.51 No.6

Purpose:Idiopathic thrombocytopenic purpura (ITP) is a relatively common hematological disease in children. It generally occurs after exposure to a common viral infection episode; however, it may occasionally follow immunization with measles, measles-mumps-rubella (MMR), hepatitis B (HBV), influenza, diphtheria–tetanus-pertussis (DTP), or chickenpox vaccines. In this study, the incidence, clinical characteristics, and treatment outcome of vaccination-associated ITP were investigated and compared with non-vaccination-associated ITP. Methods:The admission records of 105 pediatric ITP patients between 0-14 years of age admitted to Department of Pediatrics, Wonkwang University Hospital from January 1994 to July 2007 were retrospecitively reviewed. Patients were grouped into a vaccination-associated group and a non-vaccination-associated group according to vaccination history within the previous 1 month, and various clinical features between the two groups were statistically analyzed. Results:Thirteen patients (12%) had a preceding vaccination. Eight had received DTP vaccination, 2 had received hepatitis B, and 1 each had received influenza, MMR, and Japanese B encephalitis vaccination. However, none of the patients had a recurrent thrombocytopenia after subsequent vaccinations. In the vaccination-associated group, the age was significantly lower, anemia was more common, and the risk period with blood platelet count <20×109/L was significantly shorter than for the in non-vaccination-associated group. Also, wet purpura was less prominent and the remission within 1month was more frequently achieved in the vaccination-associated ITP group. Conclusion:Vaccination-associated ITP patients showed mild symptoms with a more benign and shorter lasting course than non-vaccination-associated ITP patients. Moreover, platelet count assessment at the time of the next immunization may not be necessary. (Korean J Pediatr 2008;51:610-615) Purpose:Idiopathic thrombocytopenic purpura (ITP) is a relatively common hematological disease in children. It generally occurs after exposure to a common viral infection episode; however, it may occasionally follow immunization with measles, measles-mumps-rubella (MMR), hepatitis B (HBV), influenza, diphtheria–tetanus-pertussis (DTP), or chickenpox vaccines. In this study, the incidence, clinical characteristics, and treatment outcome of vaccination-associated ITP were investigated and compared with non-vaccination-associated ITP. Methods:The admission records of 105 pediatric ITP patients between 0-14 years of age admitted to Department of Pediatrics, Wonkwang University Hospital from January 1994 to July 2007 were retrospecitively reviewed. Patients were grouped into a vaccination-associated group and a non-vaccination-associated group according to vaccination history within the previous 1 month, and various clinical features between the two groups were statistically analyzed. Results:Thirteen patients (12%) had a preceding vaccination. Eight had received DTP vaccination, 2 had received hepatitis B, and 1 each had received influenza, MMR, and Japanese B encephalitis vaccination. However, none of the patients had a recurrent thrombocytopenia after subsequent vaccinations. In the vaccination-associated group, the age was significantly lower, anemia was more common, and the risk period with blood platelet count <20×109/L was significantly shorter than for the in non-vaccination-associated group. Also, wet purpura was less prominent and the remission within 1month was more frequently achieved in the vaccination-associated ITP group. Conclusion:Vaccination-associated ITP patients showed mild symptoms with a more benign and shorter lasting course than non-vaccination-associated ITP patients. Moreover, platelet count assessment at the time of the next immunization may not be necessary. (Korean J Pediatr 2008;51:610-615)

9개월 영아에서 발생한 Henoch-Schonlein 자반증 1례

김옥란,유승택,최두영 圓光大學校 醫科學硏究所 2006 圓光醫科學 Vol.21 No.2