1.Bone mineral density of normal Korean children.
Kyu Young LEE ; Byoung Yul LIM ; Sung Ho CHA ; Byoung Soo CHO ; Chang Il AHN ; Young Seol KIM
Journal of the Korean Pediatric Society 1991;34(5):605-613
No abstract available.
Bone Density*
;
Child*
;
Humans
2.Correlation Analysis of Each Variable of Fetal Heart Rate After Maternal Hearing of Alpha-Brain Wave Induced Sound and Natural Sounds.
Moon Il PARK ; Dong Yul SHIN ; Jeong Kyu HOH ; Jeong Hyae HWANG ; Kyung Joon CHA ; Young Sun PARK
Korean Journal of Perinatology 2000;11(2):213-220
No abstract available.
Female
;
Fetal Heart*
;
Hearing*
;
Heart Rate, Fetal*
;
Pregnancy
3.Correlation Analysis of Each Variable of Fetal Heart Rate in Normal and Abnormal Pregnancies.
Jee Soo PARK ; Jeong Kyu HOH ; Sang Soon YOON ; Moon Il PARK ; Kyung Joon CHA ; Young Sun PARK
Korean Journal of Perinatology 2000;11(2):156-169
No abstract available.
Female
;
Fetal Heart*
;
Heart Rate, Fetal*
;
Pregnancy
;
Pregnancy*
4.A study on changes of the Vertebral Pedicles and Mechanical Strengths after Screw Insertion
Seung Ik CHA ; Se Il SUK ; Choon Ki LEE ; Won Joong KIM ; Kyu Jung CHO ; Soo Taek LIM
The Journal of the Korean Orthopaedic Association 1996;31(1):42-51
Spinal fixation using pedicle screws has recently been the focus of increased attention, but the adequate size of pedicle screw and maximum percentage fill as related to the pedicle diameter and are not well known. The objects of this study were to determine the ideal ratio among pedicle, drill and screw diameter, and to determine the maximum percentage fill of the screw without significant decrease of pull-out strength. The materials used for the experiments were 376 thoracic pedicles obtained from the 38 young pigs, and the diameters of pedicles ranged from 3.0 to 8.5mm. After 40% to 100% drilling as compared to pedicle diameter, screws were inserted carefully, and measurements were taken of the outer pedicle changes and pull-out strengths, and adequate drill and screw sizes as related to the diameters of given pedicles were determined. It was found that pull-out strength was the strongest after 60% drill, and the larger the drill diameter, the smaller the holding power, and the larger the screw diameter, the greater the holding power. Maximum pull-out strength was seen at 80-90% fill with 60% drill. After sequentially drilling each pedicle with increasingly larger drill bits, larger screws could be inserted with pedicle changes such as expansion, cutout, split fracture, and comminuted fracture. after larger drilling up to 100%, pedicle screws with diameters smaller than 115% of measured pedicle diameters could be safly inserted without fracture and significant decrease of pull-out strength. It is concluded that effective percentages of drill and screw diameters to the pedicle diameter are 60% and 80-90% respectively, and pedicle screw up to 115% of measured pedicle diameter can be safely inserted into pedicle without significant decrease of pull-out strength. It is thought that fresh pedicle has elasticity and larger screw can be inserted to the pedicle with strong holding after larger drilling.
Elasticity
;
Fractures, Comminuted
;
Pedicle Screws
;
Swine
5.Fatal Biliary-Systemic Air Embolism during Endoscopic Retrograde Cholangiopancreatography: A Case with Multifocal Liver Abscesses and Choledochoduodenostomy.
Sung Tae CHA ; Chang Il KWON ; Han Gyung SEON ; Kwang Hyun KO ; Sung Pyo HONG ; Seong Gyu HWANG ; Pil Won PARK ; Kyu Sung RIM
Yonsei Medical Journal 2010;51(2):287-290
We report a rare case of a massive fatal embolism that occurred in the middle of endoscopic retrograde cholangiopancreatography (ERCP) and retrospectively examine the significant causes of the event. The patient was a 50-year old female with an uncertain history of previous abdominal surgery for multiple biliary stones 20 years prior. The patient presented with acute right upper quadrant pain. An abdominal computed tomographic (CT) scan revealed the presence of multiple stones in the common bile duct (CBD) and intra-hepatic duct (IHD) with biliary obstruction, multifocal liver abscesses, and air-biliarygram. Emergency ERCP showed a wide and straight opening of choledochoduodenostomy, which may have been created during a previous surgery, and multiple filling defects in the CBD. With the use of a forward endoscope, mud stones were extracted through the opening of the choledochoduodenostomy. Cardiac arrest suddenly developed during the procedure, and despite immediate resuscitation, the patient died due to a massive systemic air embolism. We reviewed previously reported fatal cases and accessed factors facilitating air embolisms in this case.
Cholangiopancreatography, Endoscopic Retrograde/*methods
;
Choledochostomy/*methods
;
Common Bile Duct/radiography
;
Embolism, Air/*complications
;
Fatal Outcome
;
Female
;
Humans
;
Liver Abscess/pathology
;
Middle Aged
;
Tomography, X-Ray Computed
6.A Case of Nodular Regenerative Hyperplasia of the Liver Combined with Toxic Hepatitis.
Sun Mi JIN ; Sang Hee SONG ; Yang Hyun CHO ; Dae Kyu SHIN ; Sun Young SHIN ; Gwang Il KIM ; Hana PARK ; Kyu Sung RIM
The Korean Journal of Gastroenterology 2015;65(1):52-56
Nodular regenerative hyperplasia (NRH) is an uncommon liver condition characterized by diffuse transformation of the hepatic parenchyma into regenerative nodules without fibrosis. Portal vasculopathy caused by abnormal hepatic venous flow may induce hepatocyte hyperplasia, which forms regenerative nodules. Underlying diseases or certain drugs may also be the cause of NRH. This condition is often underdiagnosed as the patients remain asymptomatic until development of portal hypertension, and histopathologic confirmation by liver biopsy is the only way of making a definite diagnosis. The management mainly involves prevention and treatment of the complications of portal hypertension. The frequency of diagnosis of NRH has increased rapidly in recent years, however, only a few cases have been reported in Korea. Here, we report on a case of NRH of the liver combined with toxic hepatitis.
Alanine Transaminase/analysis
;
Aspartate Aminotransferases/analysis
;
Bilirubin/blood
;
Chemical and Drug Induced Liver Injury/complications/*diagnosis/pathology
;
Duodenal Ulcer/pathology
;
Endoscopy, Digestive System
;
Female
;
Focal Nodular Hyperplasia/complications/*diagnosis/pathology
;
Humans
;
Liver/enzymology/pathology
;
Magnetic Resonance Imaging
;
Middle Aged
;
Tomography, X-Ray Computed
7.Admission of Term Infants to Neonatal Intensive Care Unit from Nursery.
Jin Seok PARK ; Kee Hyun CHO ; Heui Seung JO ; Sung Il CHO ; Gyu Young CHAE ; Moon Kyu KIM ; Kyu Hyung LEE
Korean Journal of Perinatology 2014;25(4):246-256
PURPOSE: We evaluated the clinical characteristics of term infants admitted to the neonatal intensive care unit (NICU) from nursery. METHODS: This is a study of NICU-admitted infants who were born > or =37 weeks of gestation at the Bungdang CHA Hospital between January 2012 and August 2013 (n=161). The infants were divided into 3 groups. The "nursery room (NR) group" (n=97) comprised admissions from the nursery following a late deterioration in condition. The "delivery room (DR) group" (n=64) comprised infants who required admission to the NICU immediately after delivery. In addition, healthy term infants who were selected as the "Term group" (n=95). RESULTS: The NR group had a higher incidence of respiratory distress syndrome than DR group (28.9% vs. 14.1%, P=0.029). Compared with the Term group, the NR group had increased incidence of prolonged (>18 h) premature rupture of membranes (PROM) (6.2% vs. 0.0%, P=0.029). By logistic regression analysis, comparing NR group and Term group, a 1 min Apgar score < or =7 points {odds ratio (OR) and 95% confidence intervals (CI) 3.1 (1.0-9.1)}, a requirement of O2 at birth 2.6 (1.2-5.9) and abnormalities detected on an antenatal sonogram 3.3 (1.4-7.8) were associated with an increased risk of admission to NICU. CONCLUSION: Risk factors for NICU admission from nursery in term infants included prolonged PROM, a 1 min Apgar score of < or =7 points, a requirement of O2 at birth, and abnormalities on antenatal sonograms. Term infants with these risk factors should be carefully observed in the early neonatal period.
Apgar Score
;
Humans
;
Incidence
;
Infant*
;
Infant, Newborn
;
Intensive Care, Neonatal*
;
Logistic Models
;
Membranes
;
Nurseries*
;
Parturition
;
Patient Admission
;
Pregnancy
;
Risk Factors
;
Rupture
;
Term Birth
8.Acute tubular necrosis associated with typhoid fever.
Sung Yoon CHO ; Kyu Young LEE ; Sung Ho CHA ; Byoung Soo CHO ; Chang Il AHN ; So Yeon YU ; Mun Ho YANG ; Soon Don HONG
Journal of the Korean Pediatric Society 1992;35(6):867-872
No abstract available.
Necrosis*
;
Typhoid Fever*
9.A case of lipodystrophia centrifugalis abdominalis infantilis.
Kyu Young LEE ; Sung Ho CHA ; Byoung Soo CHO ; Chang Il AHN ; Choong Rim HAW ; Woo Young SIM ; Moon Ho YANG
Journal of the Korean Pediatric Society 1991;34(10):1452-1457
No abstract available.
10.A case of lipodystrophia centrifugalis abdominalis infantilis.
Kyu Young LEE ; Sung Ho CHA ; Byoung Soo CHO ; Chang Il AHN ; Choong Rim HAW ; Woo Young SIM ; Moon Ho YANG
Journal of the Korean Pediatric Society 1991;34(10):1452-1457
No abstract available.