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      • KCI등재

        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.

      • KCI등재

        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)

      • KCI등재

        증례 : 영아기에 진단된 Swyer 증후군 1예

        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 大韓周産醫學會雜誌 Vol.16 No.2

        스와이어 증후군은 신체적 기형 없이, 생식선 형성의 이상에 의해 표현형은 여성의 외양 및 외부 성기를 보이며 핵형은 남성 염색체인 46,XY를 가지는 증후군으로 환자는 외부 생식기가 정상 여성과 차이가 없으므로 원발성 무월경, 음모 및 액모의 감소, 유방 발육 부전 등의 증상으로 보통 사춘기시기에 발견되는 경우가 대부분이다. 저자들은 성장 지연으로 내원한 영아를 검사하던 중 Swyer 증후군을 우연히 확인하여 이에 보고하는 바이다. 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.

      • KCI등재

        Proteomic analysis of human serum from patients with temporal lobe epilepsy

        이창우,유승택,최하영,고은정,곽용근 대한소아청소년과학회 2009 Clinical and Experimental Pediatrics (CEP) Vol.52 No.5

        Purpose : Epilepsy affects more than 0.5% of the world's population. It has a large genetic component and is caused by electrical hyperexcitability in the central nervous system. Despite its prevalence, the disease lacks definitive diagnostic serological biomarkers. To identify potential biomarkers for epilepsy by a convenient method, we analyzed the expression of serum proteins, reflecting alterations in the patient's proteomes. Methods : We compared two-dimensional electrophoretic band patterns of human sera from eight patients with temporal lobe epilepsy (TLE) with those of eight control subjects. The differentially expressed bands were identified using matrix-assisted laser desorption/ionization time-of-flight mass spectrometry and electrospray ionization quadrupole time-of-flight mass spectrometry. Results : Twelve proteins were differentially expressed in the TLE group, of which 6 were identified. Expression of haptoglobin Hp2, PRO2675, immunoglobulin heavy chain constant region gamma 2, an unnamed protein, and three unidentified proteins were upregulated in serum from the patients with TLE, whereas those of major histocompatibility complex (MHC) class I antigen, plasma retinol-binding protein precursor, and three unidentified proteins were downregulated in these patients. After resection of the epileptogenic zone, the expressions of MHC class I antigen, immunoglobulin heavy chain constant region gamma 2, two of the downregulated unidentified proteins, and one of the upregulated unidentified proteins returned to the normal range. Conclusion : The 12 serum proteins in this study are potentially useful biomarkers for the diagnosis and monitoring of TLE. Purpose : Epilepsy affects more than 0.5% of the world's population. It has a large genetic component and is caused by electrical hyperexcitability in the central nervous system. Despite its prevalence, the disease lacks definitive diagnostic serological biomarkers. To identify potential biomarkers for epilepsy by a convenient method, we analyzed the expression of serum proteins, reflecting alterations in the patient's proteomes. Methods : We compared two-dimensional electrophoretic band patterns of human sera from eight patients with temporal lobe epilepsy (TLE) with those of eight control subjects. The differentially expressed bands were identified using matrix-assisted laser desorption/ionization time-of-flight mass spectrometry and electrospray ionization quadrupole time-of-flight mass spectrometry. Results : Twelve proteins were differentially expressed in the TLE group, of which 6 were identified. Expression of haptoglobin Hp2, PRO2675, immunoglobulin heavy chain constant region gamma 2, an unnamed protein, and three unidentified proteins were upregulated in serum from the patients with TLE, whereas those of major histocompatibility complex (MHC) class I antigen, plasma retinol-binding protein precursor, and three unidentified proteins were downregulated in these patients. After resection of the epileptogenic zone, the expressions of MHC class I antigen, immunoglobulin heavy chain constant region gamma 2, two of the downregulated unidentified proteins, and one of the upregulated unidentified proteins returned to the normal range. Conclusion : The 12 serum proteins in this study are potentially useful biomarkers for the diagnosis and monitoring of TLE.

      • KCI등재

        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)

      • KCI등재

        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.

      • SCOPUSKCI등재

        척수강내로 잘못 주입된 Tranexamic Acid 로 발생한 중추신경계 독성 발생 및 진행에 대한 증례 보고

        류길수,유승택,송현철,주진철 대한마취과학회 1993 Korean Journal of Anesthesiology Vol.26 No.6

        Neurologic Sequelae after spinal anesthesia are extrenely rare, due in part to use of prepackaged and sterile kits and the small doses of local anesthectics employed. We have experienced 42 years old healthy male developed cental nervous system toxicity due to injection of wrong substance into subarachnoid space. And the patient recovered 3 days later with mild pulmonary edema and about 72 hour anterograde amnesia after symptomatic treatment.

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