1.Total Protein, Albumin and IgG Analysis of Serum and Cerebrospinal Fluid in Control and Aseptic Meningitis.
Nak Won CHOI ; Myung Ja YOON ; Hae Rung CHUNG ; Dong Hyuk KUM
Journal of the Korean Pediatric Society 1990;33(8):1057-1064
No abstract available.
Cerebrospinal Fluid*
;
Immunoglobulin G*
;
Meningitis, Aseptic*
2.Kidney and Phosphate Metabolism.
Electrolytes & Blood Pressure 2008;6(2):77-85
The serum phosphorus level is maintained through a complex interplay between intestinal absorption, exchange intracellular and bone storage pools, and renal tubular reabsorption. The kidney plays a major role in regulation of phosphorus homeostasis by renal tubular reabsorption. Type IIa and type IIc Na+/Pi transporters are important renal Na+-dependent inorganic phosphate (Pi) transporters, which are expressed in the brush border membrane of proximal tubular cells. Both are regulated by dietary Pi intake, vitamin D, fibroblast growth factor 23 (FGF23) and parathyroid hormone. The expression of type IIa Na+/Pi transporter result from hypophosphatemia quickly. However, type IIc appears to act more slowly. Physiological and pathophysiological alteration in renal Pi reabsorption are related to altered brush-border membrane expression/content of the type II Na+/Pi cotransporter. Many studies of genetic and acquired renal phosphate wasting disorders have led to the identification of novel genes. Two novel Pi regulating genes, PHEX and FGF23, play a role in the pathophysiology of genetic and acquired renal phosphate wasting disorders and studies are underway to define their mechanism on renal Pi regulation. In recent studies, sodium-hydrogen exchanger regulatory factor 1 (NHERF1) is reported as another new regulator for Pi reabsorption mechanism.
Fibroblast Growth Factors
;
Homeostasis
;
Hypophosphatemia
;
Intestinal Absorption
;
Kidney
;
Membranes
;
Microvilli
;
Parathyroid Hormone
;
Phosphoproteins
;
Phosphorus
;
Sodium-Hydrogen Antiporter
;
Sodium-Phosphate Cotransporter Proteins
;
Vitamin D
3.Fibrous Dysplasia of the Skull.
Nak Won CHOI ; Hyung Keun KIM ; Un Sung CHOI
Journal of Korean Neurosurgical Society 1979;8(2):345-350
Fibrous dysplasia infrequently involves the cranium with wide range of variety. Recently, we have expierenced a case of diffuse sclerotic type of fibrous dysplasia which involves frontal and sphenoid bone with vault deformity. Furthermore, we stressed the diagnostic procedures such as carotid angiography, orbital venoraphy & C-T scan, are valuable in recognization of the extent of involvement and in differential diagnosis.
Angiography
;
Congenital Abnormalities
;
Diagnosis, Differential
;
Orbit
;
Skull*
;
Sphenoid Bone
4.Blood glucose analysis in patients on continuous ambulatory peritoneal dialysis with Icodextrin.
Se Hee YOON ; Nak Won CHOI ; Sung Ro YUN
Korean Journal of Medicine 2008;74(2):170-175
BACKGROUND/AIMS: Icodextrin (glucose polymer) is metabolized by a-amylase to oligosaccharides such as maltose and maltotriose. The presence of these metabolites could have an effect on the enzymatic glucose measurement especially the glucose dehydrogenase pyrroloquinolinequinone (GDH-PQQ) based method. Patients treated with icodextrin are at risk for inaccurate blood glucose measurements. In this study we measured the blood glucose with different methods and analyzed the results to determine the test accuracy. METHODS: The blood glucose was measured, in seven outpatients and in seven inpatients using icodextrin, by the glucose hexokinase laboratory technique method as well as the GDH-PQQ method (Accu Chek Active)at the same time. To estimate an icodextrin residual effect, after discontinuing icodextin, the blood glucose was measured by the two methods after 48 hours in 4 inpatients. RESULTS: In seven outpatients the blood glucose was overestimated by the Accu Chek Active method (mean difference 68 mg/dL, p value 0.012). In seven inpatients the mean difference in the glucose was 56 mg/dL at 6am, 52 mg/dL at 11am, 52 mg/dL at 4pm, and 50 mg/dL at 9pm by the two different methods. In the four inpatients after changing their dialysate, the mean difference in the glucose was 58 mg/dL after 10 hours, 45 mg/dL after 24 hours, 24 mg/dL after 34 hours, and 26 mg/dL after 48 hours. CONCLUSION: Blood glucose was overestimated by the GDH-PQQ method and the inaccuracies were observed for more than 48 hours.
Blood Glucose
;
Glucans
;
Glucose
;
Glucose 1-Dehydrogenase
;
Hexokinase
;
Humans
;
Hypoglycemia
;
Inpatients
;
Maltose
;
Oligosaccharides
;
Outpatients
;
Peritoneal Dialysis, Continuous Ambulatory
;
Trisaccharides
5.A Case of Dyke-Davidoff Syndrome.
Nak Uk SUNG ; Won Tsen KIM ; Myung Soon KIM ; Il Saing CHOI
Journal of the Korean Neurological Association 1987;5(1):84-88
Dyke-Davidoff syndorme is a rare congenital disorder which developed hemiatropy of brain, enlargement of ventricles and prominent pneumatization of petrous pyramid of the temporal bone. It mainfests unilateral invountary movement such as seizure, athetosis, chorea and mental retardation. This disorder have strong evidence of significance to differential diagnosis of cerebral palsy because of different therapeutic approach and outcome. Recently we examined 10 years old girl who developed seizure at 2 years old and gradually progressed with hemiparesis, hypoplaisa of right side of the body. The brain CT scan showed marked dilatation of lateral ventricle, prominent sylvian fissure and cortical sulci with somewhat thickened skull vault and pneumatization of petrous pyramid of the temporal bone on left side. EEG showed high voltage slow wave and spikes. So we report a case of Dyke-Davidoff syndrome with review of literature.
Athetosis
;
Brain
;
Cerebral Palsy
;
Child
;
Child, Preschool
;
Chorea
;
Congenital, Hereditary, and Neonatal Diseases and Abnormalities
;
Diagnosis, Differential
;
Dilatation
;
Electroencephalography
;
Female
;
Humans
;
Intellectual Disability
;
Lateral Ventricles
;
Paresis
;
Petrous Bone
;
Seizures
;
Skull
;
Temporal Bone
;
Tomography, X-Ray Computed
6.Detecting Bacterial Growth in Continuous Ambulatory Peritoneal Dialysis Effluent Using Two Culture Methods.
Se Hee YOON ; Nak Won CHOI ; Sung Ro YUN
The Korean Journal of Internal Medicine 2010;25(1):82-85
BACKGROUND/AIMS: The aim of this study was to evaluate the peritonitis-causing bacteria detected in peritoneal fluid using a blood culture bottle in patients undergoing continuous ambulatory peritoneal dialysis (CAPD). METHODS: One-hundred and eleven dialysates from 43 patients suspected of peritonitis related to CAPD were retrospectively evaluated between May 2000 and February 2008. In all cases, 5 to 10 mL of dialysate was inoculated into a pair of BacT/Alert blood culture bottles, and 50 mL of centrifuged dialysate was simultaneously inoculated into a solid culture media for conventional culture. The results were compared to those of the conventional culture method. Isolated microorganisms were compared between the two methods. RESULTS: The blood culture method was positive in 78.6% (88 / 112) of dialysate specimens and the conventional culture method in 50% (56 / 112, p < 0.001). CONCLUSIONS: The blood culture method using the BacT/Alert system is useful for culturing dialysates and improves the positive culture rate in patients with suspected peritonitis compared to the conventional culture method.
Culture Media
;
Dialysis Solutions
;
Gram-Negative Bacterial Infections/*diagnosis/microbiology
;
Gram-Positive Bacterial Infections/*diagnosis/microbiology
;
Humans
;
Kidney Failure, Chronic/*therapy
;
Microbiological Techniques/*methods
;
Peritoneal Dialysis, Continuous Ambulatory/*adverse effects
;
Peritonitis/*diagnosis/microbiology
;
Sensitivity and Specificity
7.POSSUM, P-POSSUM, and Cr-POSSUM Scoring Systems as Predictors of Postoperative Morbidity and Mortality in Elderly Colorectal Cancer Patients.
Nak Song SUNG ; In Seok CHOI ; Won Jun CHOI
Journal of the Korean Society of Coloproctology 2009;25(6):423-428
PURPOSE: The Physiological and Operative Severity Score for the enumeration of Morbidity and Mortality (POSSUM), the Portsmouth-POSSUM (P-POSSUM), and the colorectal-POSSUM (Cr-POSSUM) are relative scoring systems for the prediction of postoperative morbidity and mortality. This study is designed to evaluate the usefulness of each scoring system in elderly colorectal cancer patients undergoing major colorectal surgery. METHODS: From January 2000 to May 2008, the authors retrospectively analyzed the medical records of 251 elderly colorectal cancer patients who had undergone surgery. Collected data were analyzed using the Mann-Whitney U-test, a risk stratification analysis, and a receiver-operator characteristic (ROC) curve to evaluate the usefulness and the accuracy of each scoring system. RESULTS: All the predicted morbidity and mortality rates calculated by using the three POSSUM systems were higher than the observed morbidity and mortality rates. A risk stratification analysis showed a considerable correlation in risk prediction between the observed data and the calculated data. The ROC curves showed that all three POSSUM scoring systems had quite high accuracies as predictors of postoperative morbidity and mortality. POSSUM and P-POSSUM were more accurate than Cr-POSSUM. CONCLUSION: All three scoring systems have a tendency for overestimation. The accuracies of POSSUM, P-POSSUM, and Cr-POSSUM as predictors are acceptance, and POSSUM and P-POSSUM are more accurate than Cr-POSSUM for prediting postoperative morbidity and mortality.
Aged
;
Colorectal Neoplasms
;
Colorectal Surgery
;
Humans
;
Medical Records
;
Retrospective Studies
;
ROC Curve
8.Brachial Plexus Injury by Gun-Shot.
Nak Won CHOI ; Kyu Ho LEE ; Un Sung CHOI ; Jung Bin LEE
Journal of Korean Neurosurgical Society 1979;8(1):95-102
Disturbances of the surrounding vascular system and the severe cicatrical entrapment of the injured plexus should be considered, with its neural damage, in brachial plexus injury by Gun-Shot. Therefore, Subclavian arteriography and Subclavian venography before operation should be essential and the correction of the deficit of the vascular system may be a factor in the determination of prognosis in relation to pain control. We have reported 2 cases of the brachial plexus injury by Gun-shot and discussed the importance of Subcalvian arteriography and Subclavian venography. External neurolysis seems to be beneficial in Causalgia caused by brachial plexus injury.
Angiography
;
Brachial Plexus*
;
Causalgia
;
Phlebography
;
Prognosis
9.An Analysis on the Normal and Near Normal Hearts in Adult Sudden Cardiac Death.
Shin Mong KANG ; Won Tae LEE ; Han Young LEE ; Joong Soek SEO ; Young Shik CHOI ; Il Hoon KWON ; Nak Eun CHUNG
Korean Journal of Legal Medicine 2000;24(2):37-44
The authors analysed 53 cases of sudden cardiac death(SCD) without prominent structural abnormalies of heart out of witnessed 300 cases. Thirty four cases were associated with sleep and 19 with activity or rest. Twenty one cases were classified as having normal hearts, and the rest as structurally mild abnormal ones. Male was predominant, and almost of the victims were suffered in their twenties or thirties. All cases collapsed instantaneously or in very short time with various and not specific terminal symptoms. Inducing or trigger factors are not clarified in almost of the cases. Mechanisms or causes of death could not be defined clearly. We concluded that careful heart examination with detailed clinical history under the appropriate postmortem investigation system is only effective approach for the true mechanism and cause of death.
Adult*
;
Cause of Death
;
Death, Sudden, Cardiac*
;
Heart*
;
Humans
;
Male
10.Interference of Detection Rate of Lumbar Disc Herniation by Socioeconomic Status.
Gyu Yeul JI ; Chang Hyun OH ; Nak Yong JUNG ; Seong Dae AN ; Won Seok CHOI ; Jung Hoon KIM
Asian Spine Journal 2013;7(1):14-19
STUDY DESIGN: Retrospective study. PURPOSE: The objective of the study is to evaluate the relationship between the detection rate of lumbar disc herniation and socioeconomic status. OVERVIEW OF LITERATURE: Income is one important determinant of public health. Yet, there are no reports about the relationship between socioeconomic status and the detective rate of disc herniation. METHODS: In this study, 443 cases were checked for lumbar computed tomography for lumbar disc herniation, and they reviewed questionnaires about their socioeconomic status, the presence of back pain or radiating pain and the presence of a medical certificate (to check the medical or surgical treatment for the pain) during the Korean conscription. RESULTS: Without the consideration for the presence of a medical certificate, there was no difference in spinal physical grade according to socioeconomic status (p=0.290). But, with the consideration of the presence of a medical certificate, the significant statistical differences were observed according to socioeconomic status in 249 cases in the presence of a medical certificate (p=0.028). There was a lower detection rate in low economic status individuals than those in the high economic class. The common reason for not submitting a medical certificate is that it is neither necessary for the people of lower socioeconomic status nor is it financially affordable. CONCLUSIONS: The prevalence of lumbar disc herniation is not different according to socioeconomic status, but the detective rate was affected by socioeconomic status. Socioeconomic status is an important factor for detecting lumbar disc herniation.
Back Pain
;
Intervertebral Disc Displacement
;
Prevalence
;
Public Health
;
Retrospective Studies
;
Social Class
;
Surveys and Questionnaires