1.The changes of arterial and end-tidal carbon dioxide tension by respiratory rate and tidal volume.
Eun Kil RAH ; Hyun Joo OH ; Hong Suk YANG
The Korean Journal of Critical Care Medicine 1993;8(1):27-32
No abstract available.
Carbon Dioxide*
;
Carbon*
;
Respiratory Rate*
;
Tidal Volume*
2.Clinical Analysis of 1,068 Cases of Mid-trimester Genetic Amniocentesis.
Hyun Hee PARK ; Seong Cheon YANG ; Haeng Soo KIM ; Jeong In YANG ; Joon Hwan OH ; Hyun Woong KANG ; Hyun Joo KIM ; Yeon Jong JOO ; Kie Suk OH
Korean Journal of Obstetrics and Gynecology 1999;42(10):2306-2314
OBJECTIVES: The objective of this study is to analyze 1,068 cases of prenatal genetic amniocentesis and to compare the results with reported studies. METHOD: We analyzed 1,068 cases of midtrimester prenatal genetic amniocenteses from September 1994 to February 1999, and investigated the fetal chromosomal abnormality, obstetric outcomes and complications by the indications of genetic amniocentesis and prophylactic antibiotic use at the Department of Obstetrics and Gynecology, Ajou University School of Medicine. RESULTS: Abnormal maternal serum markers were the most common indication of amniocentesis (57.7%) and the most common age distribution was 25-29 years (39.2%). One case of early amniocentesis (14 gestational weeks) was performed. The overall incidence of chromosomal aberration was 5.2% (56/1,068), of which there were 28 cases (50.0%; 28/56) of numerical aberrations and 28 cases (50.0%; 28/56) of structural aberrations. There were 50 cases (4.7%) of autosomal chromosomal aberrations and 6 cases (0.6%) of sex chromosomal aberrations. The pregnancy outcome was full-term delivery in 86.5%, preterm delivery in 7.6%, termination of pregnancy in 4.0%. There were no cases of serious complications including fetal death except for a case of self-limited amniotic fluid leakage(high leakage) in which the pregnancy was maintained. There were no significant differences between prophylactic antibiotics user group and non-user group in obstetric complications and outcomes. CONCLUSION: We could confirm that the trend in the indication of genetic amniocentesis had changed from advanced maternal age(35 year-old) toward abnormal maternal serum marker(triple test), and we recognized the importance of genetic amniocentesis according to the various antenatal screening tests of maternal serum marker, antenatal ultrasound, past history of fetal anomaly or family history of fetal chromosomal anomaly in the younger age groups(< 35 year-old) that are involved in more than half of the chromosomal anomaly. Further study will be needed to elucidate the efficacy of using prophylactic antibiotics in amniocentesis.
Age Distribution
;
Amniocentesis*
;
Amniotic Fluid
;
Anti-Bacterial Agents
;
Biomarkers
;
Chromosome Aberrations
;
Female
;
Fetal Death
;
Gynecology
;
Humans
;
Incidence
;
Obstetrics
;
Pregnancy
;
Pregnancy Outcome
;
Pregnancy Trimester, Second
;
Prenatal Diagnosis
;
Ultrasonography
3.Purification of porcine bone morphogenetic protein.
Nam Hyun KIM ; Kyu Hyun YANG ; Hwan Mo LEE ; Sang Hwan OH
The Journal of the Korean Orthopaedic Association 1991;26(1):232-238
No abstract available.
Bone Morphogenetic Proteins*
4.Effects of Low Oxygen Condition on the Development of Mouse Embryos Cultured In Viro.
Jong Hyun WOO ; Kyung Joo HWANG ; Hyun Won YANG ; Chi Hyeong LEE ; Jeong In YANG ; Hyuck Chan KWAN ; Kie Suk OH
Korean Journal of Obstetrics and Gynecology 1998;41(12):2962-2968
OBJECTIVE: It is known that mouse embryos before implantation develop in a low oxygen environment of 3- 8% concentration and with antioxidant materials such as vitamins, antioxidant enzymes, ferrous binding proteins, and albumin in follicular and tubal fluids. However, the 20% oxygen culture condition with chemically defined media might be produce an abundance of ROS, and leads to developmental delay or developmental block in vitro. In this study, we attempt to elucidate the relationship between intracellular H2O2 production and embryo development in different oxygen culture conditions of mouse embryos. METHODS: Prenuclear embryos from C57BL/CBA Fl hybrid and ICR mouse were cultured in incubators which provided 5% carbon dioxide, 20% oxygen and 5% carbon dioxide, 5% oxygen. Measurement of H2O2 level in a embryo was performed with DCHFDA(2, 7 -dichlorodihydroflourescein diacetate)and analyzed with Quanti-cell 700, and the number of blastomeres was counted with DAPI( 4, 6'-diamidino-2-phenylindole). RESULTS: Oxygen concentration of the culture medias was significantly higher in the 20% oxygen environment compared to that of 5% oxygen environment. Culture of mice embryos in high oxygen condition leads to high HO concentrations at 2 cell stage and developmental delay or ""2-cell block"" regardless of the strain. But in a 5% oxygen environment, which is similar to in-vivo conditions HO production was suppressed continuously through out culture and development of embryos was definitely improved. CONCLUSION: These results suggest that there is a difference in the production of ROS or protective mechanism according to the mouse strains and stage of development, and it is thought that in-vitro culture in 5% oxygen environment provides stable in vivo equilibrium but in a 20% oxygen environment there is production of ROS which overcome the protective mechanism which leads to cellular damage and embryo developmental delay.
Animals
;
Blastomeres
;
Carbon Dioxide
;
Carrier Proteins
;
Culture Media
;
Embryonic Development
;
Embryonic Structures*
;
Female
;
Incubators
;
Mice*
;
Mice, Inbred ICR
;
Oxygen*
;
Pregnancy
;
Vitamins
5.Pseudocyst of the Auricle.
Jae Seog YANG ; Seung Hyun HONG ; Il Hwan KIM ; Hae Jun SONG ; Chil Hwan OH
Annals of Dermatology 1997;9(1):16-21
Pseudocyst of the auricle presents as a non-inflammatory, fluctuant swelling on the upper half or third section of the ear, due to intracartilaginous accumulation of fluid. Histological examination shows an intracartilaginous cavity without an epithelial lining. The etilogy and pathogenesis of this disorder remains unknown, but the lesion is likely to be due to localized de-generation of cartilage. The degenerated cartilage is replaced by a vascular fibrous tissue from which there is serious exudation, and a clinical cystic swelling is formed. We describe in this report three cases of pseudocyst of the auricle, of which one was treated successfully by surgical excision and a pressure dressing, and the others by aspiration and steroid injection therapy. In all cases, the skin lesions had not recurred, and the patients were left with an excellent cosmetic result.
Bandages
;
Cartilage
;
Ear
;
Humans
;
Skin
6.Generalized Plane Xanthoma Associated with Monoclonal Gammopathy of Unknown Significance.
Jae Seog YANG ; Dong Jun KIM ; Seung Hyun HONG ; Hae Jun SONG ; Chil Hwan OH
Annals of Dermatology 1997;9(1):11-15
Generalized plane xanthoma is less common and usually involves the eyelids, lateral side of the neck, upper trunk, and extremities. Lesions, however, may appear on any portion of the body. Cutaneous xanthomas may occur in hyperlipidemic and in normolipidemic states. Generalized normolipidemic plane xanthoma is often associated with multiple myeloma, other reticulo-endothelial malignancies and monoclonal gammopathy with unknown significance(MGUS). We wish to report two eases of generalized plane xanthoma associated with IgG monoclonal gammopathy of unknown significance.
Extremities
;
Eyelids
;
Immunoglobulin G
;
Multiple Myeloma
;
Neck
;
Paraproteinemias*
;
Xanthomatosis*
7.Two Case of Twin Pregnancy with a Single Anomalous Fetus.
Jeong In YANG ; Kie Suk OH ; Haeng Soo KIM ; Eun Joo AHN ; Hyun Hee PARK
Korean Journal of Obstetrics and Gynecology 1999;42(2):420-425
Twin pregnancy is at increased risk for congenital anomalies. Although twins were relatively infrequent, they accaunted for a disproportionately large portion of adverse pregnancy outcome, primarily as a consequence of preterm delivery, gestational diabetes, and pregnancy induced hypertension. In case of twin pregnancy with a single anomalous fetus, the clinicians are faced with difficult decision-making processes regarding the route of delivery, when to deliver, how aggressively to attempt to prevent delivery. Twin pregnancy discordant for a fetal abnormality can be managed expectantly or by selective fetocide of abnormal twin. Recently we experienced two cases of twin pregnancy with a single anornalous fetus. We reported cases with concerned literatures.
Diabetes, Gestational
;
Female
;
Fetus*
;
Humans
;
Hypertension, Pregnancy-Induced
;
Pregnancy
;
Pregnancy Outcome
;
Pregnancy, Twin*
8.A Case of Sertoli Cell Tumor Presented with Sexual Precosity.
Hyun Jung CHO ; Seung YANG ; Phil Soo OH ; Jeh Hoon SHIN
Journal of Korean Society of Pediatric Endocrinology 2004;9(1):86-90
Some sexual differentiation disorders are associated with gonadal neoplasia and increased incidence of testicular tumors has been discribed in the patients with, XY gonadal dysgenesis. The incidence of testicular tumors in infants and children are rare, representing only 1% of all pediatric solid tumors. In general, gonadal stromal tumors are one of the most characteristic endocrine tumors of the testis, endocrine activity occurs in at least 10-20%, among them Leydig cell tumors and Sertoli cell tumors are clinically important. Although the exact pathogenesis is unknown, endocrine activity due to estrogen secretion can be manifested clinically with gynecomastia or precocious puberty. We experienced and reported a child who visited for sexual precocity and had XY gonadal dysgenesis with Sertoli cell tumor.
Child
;
Disorders of Sex Development
;
Estrogens
;
Gonadal Dysgenesis
;
Gonads
;
Gynecomastia
;
Humans
;
Incidence
;
Infant
;
Leydig Cell Tumor
;
Male
;
Puberty, Precocious
;
Sertoli Cell Tumor*
;
Testicular Neoplasms
;
Testis
9.A Case of Adrenal Cavernous Hemangioma.
Jeong Oh LEE ; Seung Hun JEON ; Yang Hoo KIM ; In Gon KIM ; In Gi SEONG ; Bo Hyun HAN
Korean Journal of Urology 2000;41(6):803-806
No abstract available.
Hemangioma, Cavernous*
10.Two Cases of Marchiafava-Bignami Disease.
Byeong Cheol OH ; Yun Jeong YANG ; Young Hyun KIM
Journal of the Korean Neurological Association 1999;17(5):764-766
We described 2 patients with Marchiafava-Bignami disease, a neurological disorder associated with chronic alcohol consumption. Patient 1 expressed general weakness and confusion, while patient 2 expressed dysphagia and seizures. Lesions involving the corpus callosum were identified with T2 weighted MR imaging in which there was a hyperintensity in the splenium of patient 1 and in the entire corpus callosum of patient 2. While the conditions of both patients were improved by with nutritional support, they were left with cognitive impairment.
Alcohol Drinking
;
Corpus Callosum
;
Deglutition Disorders
;
Demyelinating Diseases
;
Humans
;
Magnetic Resonance Imaging
;
Marchiafava-Bignami Disease*
;
Nervous System Diseases
;
Nutritional Support
;
Seizures