1.The Clinical Significance of Prenatal Antibody Screening Test.
Korean Journal of Blood Transfusion 2005;16(1):14-19
BACKGROUND: It is recommended that ABO, Rh typing and unexpected antibody screening should be tested during pregnancy in order to prevent hemolytic disease of the newborn (HDN). However, it is unclear that a routine prenatal antibody screening test predicts the occurrence of HDN. We performed a retrospective study to determine the frequency of unexpected antibody during pregnancy, antibody specificity, and the usefulness of prenatal antibody screening as a predictor of HDN. METHODS: All 6,293 prenatal antibody screening were tested at Eulji hospital from April 1997 to December 2002. The results of antibody screening and identification test were reviewed in laboratory sheet. The past transfusion and pregnant history and postnatal HDN evidence were reviewed in pregnant women with positive antibody screening. A commercial two cell panel, Selectogen I, II, and panel cell (Ortho Diagnostic Systems Inc., Raritan, USA) were used with tube method until March 1999. In April 1999, reagent cells were changed to a gel agglutination test with ID-Diacell I, II and ID-Dia Panel of DiaMed-ID Micro Typing System (DiaMed AG, Cressier, Switzerland). RESULTS: Positive results of antibody screening test were found in 52 cases (0.83%, 52/6,293). Only 28 cases of them were tested antibody identification. Antibody specificity was identified at 22 cases and 17 (77.3%, 17/22) women had unexpected antibodies which are not associated with HDN. They were 11 with anti-Lea , 3 with anti-Leb, and 3 with anti-P1. The others were 3 cases of anti-E, 1 of anti-M, and 1 of anti-S. However, no one had evidence of HDN. CONCLUSION: These results suggest that routine prenatal antibody screening may not be necessary for all pregnant women except Rh (D) negative women or those who have a history of HDN.
Agglutination Tests
;
Antibodies
;
Antibody Specificity
;
Female
;
Humans
;
Infant, Newborn
;
Mass Screening*
;
Pregnancy
;
Pregnant Women
;
Retrospective Studies
2.Evaluation of HLC-723 G7 Hemoglobin A1c Autoanalyzer.
Journal of Laboratory Medicine and Quality Assurance 2003;25(1):203-205
BACKGROUND: We evaluated the performance and analysis time of HLC-723 G7 (Tosoh corp. Tokyo, Japan) hemoglobin (Hb) A1c autoanalyzer. It utilizes cation exchange high performance liquid chromatography (HPLC) method and has a reduced analysis time compared with that of an earlier model HLC-723GHb V A1c 2.2(TM) (HLC-723GHb V, Tosoh corp. Tokyo, Japan). METHODS: We evaluated linearity, precision and comparison with HLC-723GHb V following NCCLS guidelines and counted the number of tests per hour to estimate analysis time. RESULTS: Linearity through the range from 5.8% to 13.9% was good (r2=0.9930, relative nonlinearity <2.5%). The within-run coefficients of variation (CVs) for groups of low, middle, and high level were 1.09%, 0.76%, and 0.68% and total CVs for each group were 1.60%, 0.91%, and 1.00%, respectively. Correlation equation between HLC-723 G7 and HLC-723GHb V was HLC-723 G7=1.0308 (HLC-723GHb V)-0.2896 %Hb A1c (r=0.9992, P<0.0001). Analysis time of HLC-723 G7 was 1.2 minutes per test compared with 2.1 minutes of HLC-723GHb V. CONCLUSIONS: HLC-723 G7 showed the acceptable performance and shortening analysis time therefore, it was suitable for reducing turn around time of Hb A1c assay.
Chromatography, Liquid
;
Hemoglobin A, Glycosylated
3.Whole blood cyclosporine measurement by fluorescence polarization immunoassay.
Chan Jung PARK ; Kyung Ryung KANG ; Hyun Chan CHO ; Kyung Hwa LEE ; Hong Rae CHO ; Young Joo LEE ; Yoo Sun KIM ; Eun Mi LEE ; Ki Il PARK
The Journal of the Korean Society for Transplantation 1993;7(1):77-82
No abstract available.
Cyclosporine*
;
Fluorescence Polarization Immunoassay*
;
Fluorescence Polarization*
;
Fluorescence*
4.Radiologic Reevaluation of the Ampulla of Vater Cancer.
Hae Ryung PARK ; Jong Woo KIM ; Sun Kyung LIM ; Deok Hwa HONG ; Han Heak IM ; Il Young KIM ; Pyo Nyun KIM
Journal of the Korean Radiological Society 1994;30(6):1073-1078
Objective: To evaluate the radiographic characteristics of the ampulla of Vater cancer. Subjects and Methods:The authors analyzed retrospectively the US(n=25) and CT(n=15) findings in 25 cases of ampulla of Vater cancer, with emphasis on the potential of CT & US in regand to the detectibility of the mass. ERCP(n=15) and hypotonic duodenography(n=5) were also evaluated for the configuration of obstructed duct. RESULTS: The tumor was detected on sonography in only 12 cases(48%) as a small, relatively well delinated mass with slighty low echogenicity to the pancreas. The tumor was shown by CT in 8 cases(53% ) as a well delinated mass protruding into the second portion of duodenal lumen with slightly low attenuation to the pancreas. CBD was dilated in 25 cases(100%), but pancreatic duct was dilated in 15 cases(60%). Obstructed end of CBD was nipple shaped in 7 cases(47%), clubbed in 3, flat in 3, and indistict in 2 by ERCP. Hypotonic duodenogram showed irregular filling defect in the medial wall of second portion of the duodenum in 5 cases (100%). CONCLUSION: Mas detection rate crsing US or CT were not high in ampulla of Vater cancer. Except for a CT finding of a small mass protruding into the regional duodenal lumen, other finclings were nonspecific. Therefore, additional studies or more afgressive approach should be attempted for a correct diagnosis.
Ampulla of Vater*
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Cholangiopancreatography, Endoscopic Retrograde
;
Diagnosis
;
Duodenum
;
Nipples
;
Pancreas
;
Pancreatic Ducts
;
Retrospective Studies
5.Long Term Effects of Hospital Information System on Nurses' Job Pattern and Satisfaction, and Attitudes Toward HIS.
Myong Hwa PARK ; Chul Ho JUNG ; Yoon Nyun KIM ; Sung Ryung LEE ; Kyung Il YOON ; Ki Jung JU
Journal of Korean Society of Medical Informatics 2005;11(4):361-370
OBJECTIVE: The purpose of this study was to examine the long-term effects of Hospital Information System(HIS) on nurses' job pattern and satisfaction, and attitudes toward electronic medical record system. METHODS: Prospective survey using repeated measures design was performed to compare the changes between 2 years and 4 years after introduction of HIS in a tertiary hospital. Participants were 374 nurses working in the target hospital. Questionnaire was developed by researchers based on Walker, Eyman, Krall, Prophet, and Flanagan(1996)'s study and consisted of 21 questions about job pattern, job satisfaction, and attitudes toward computerization and paper record system. RESULTS: Overall time for documentation, shift reporting, communication with other departments were reduced. Otherwise, direct nursing time was not increased after HIS. Nurses showed positive responses on changes of job pattern after HIS while job satisfaction has been decreased. In addition, nurses' attitudes toward hospital information system and paper medical record system showed they were accepting computerized information system. CONCLUSION: This study identified the long-term positive effects of HIS and the need for nursing sensitive hospital information system.
Electronic Health Records
;
Hospital Information Systems*
;
Information Systems
;
Job Satisfaction
;
Medical Records
;
Nursing
;
Prospective Studies
;
Surveys and Questionnaires
;
Tertiary Care Centers
6.A case of neonatal alloimmune thrombocytopenia due to anti-HLA B44.
Kyou Sup HAN ; Myoung Hee PARK ; Bok Yun HAN ; Jung Hye CHOI ; Jin Min CHOI ; Hwa Ryung CHUNG ; Richard H ASTER
Korean Journal of Blood Transfusion 1993;4(2):239-245
No abstract available.
Thrombocytopenia, Neonatal Alloimmune*
7.A case of neonatal alloimmune thrombocytopenia due to anti-HLA B44.
Kyou Sup HAN ; Myoung Hee PARK ; Bok Yun HAN ; Jung Hye CHOI ; Jin Min CHOI ; Hwa Ryung CHUNG ; Richard H ASTER
Korean Journal of Blood Transfusion 1993;4(2):239-245
No abstract available.
Thrombocytopenia, Neonatal Alloimmune*
8.The Effect of Microdose Gonadotropin-releasing Hormone Agonist on Secretion of Gonadotropins and Estradiol in Normally Menstruating Women.
Won Il PARK ; Hwa Ryung CHUNG ; Hye Jung YEON ; Jin Sung YUK
Korean Journal of Obstetrics and Gynecology 2002;45(1):139-144
OBJECTIVES: The microdose of gonadotrophin-releasing hormone agonist (GnRHa) has been suggested as a beneficial method of ovulation induction for poor responders. However, the effect of microdose of GnRHa itself has not been evaluated yet. We performed a prospective sutdy to assess the effect of microdose of GnRHa (5 microgram of triptorelin acetate) on the luteinizing hormone (LH) and follicle stimulating hormone (FSH). Secondary objective of this study is to assess how long the down-regulation of gonadotrophin secretion by microdose GnRHa persists. METHODS: Five microgram of triptorelin was injected daily into five normally menstruating women for 7 days starting from cycle day 3. The blood sample was drawn for 12h with 4h interval, then for 6days with 4 h interval and once a day for 14days, In next cycle, same amount of triptorelin was injected into the same subjects daily for 3 days. The blood sample was drawn twice a day for 20days. Serum FSH, LH and extradiol level was measured. RESULTS: The serum LH and FSH level increased rapidly after injection of first GnRHa. The FSH level reached peak (27.53+/-6.34 IU/l) in 5h while LH level reached peak (34.35+/-7.18 IU/l) in 4h. The flare of gonadotrophins persisted even after second and third day injection of GnRHa, although the peak levels were not as high as first injection. The down regulation of gonadotrophin was established in 4-5 days. The estradiol level increased for 4-5 days then decreased. When GnRHa was given for 7days, the estradiol level began to rise 7-8 days after last injection; when given for 3days, the estradiol level began to rise 3-6 days after last injection. CONCLUSION: Even with ultra-low dose of GnRHa, the down-regulation of gonadotrophin could be achieved. The flare-up of gonadotrophin would persist for 3days with this dose. The duration of down regulation was influenced by the duration of GnRHa administration.
Down-Regulation
;
Estradiol*
;
Female
;
Follicle Stimulating Hormone
;
Gonadotropin-Releasing Hormone*
;
Gonadotropins*
;
Humans
;
Luteinizing Hormone
;
Ovulation Induction
;
Prospective Studies
;
Triptorelin Pamoate
9.Low-level viremia and cirrhotic complications in patients with chronic hepatitis B according to adherence to entecavir
Seung Bum LEE ; Joonho JEONG ; Jae Ho PARK ; Seok Won JUNG ; In Du JEONG ; Sung-Jo BANG ; Jung Woo SHIN ; Bo Ryung PARK ; Eun Ji PARK ; Neung Hwa PARK
Clinical and Molecular Hepatology 2020;26(3):364-375
Background/Aims:
Low-level viremia (LLV) after nucleos(t)ide analog treatment was presented as a possible cause of hepatocellular carcinoma (HCC) in patients with chronic hepatitis B (CHB). However, detailed information on patients’ adherence in the real world was lacking. This study aimed to evaluate the effects of LLV on HCC development, mortality, and cirrhotic complications among patients according to their adherence to entecavir (ETV) treatment.
Methods:
We performed a retrospective observational analysis of data from 894 consecutive adult patients with treatment-naïve CHB undergoing ETV treatment. LLV was defined according to either persistent or intermittent episodes of <2,000 IU/mL detectable hepatitis B virus DNA during the follow-up period. Good adherence to medication was defined as a cumulative adherence ≥90% per study period.
Results:
Without considering adherence in the entire cohort (n=894), multivariate analysis of the HCC incidence showed that LLV was an independent prognostic factor in addition to other traditional risk factors in the entire cohort (P=0.031). Good adherence group comprised 617 patients (69.0%). No significant difference was found between maintained virologic response and LLV groups in terms of the incidence of liver-related death or transplantation, HCC, and hepatic decompensation in good adherence group, according to multivariate analyses.
Conclusions
In patients with treatment-naïve CHB and good adherence to ETV treatment in the real world, LLV during treatment is not a predictive factor for HCC and cirrhotic complications. It may be unnecessary to adjust their antiviral agent for patients with good adherence who experience LLV during ETV treatment.
10.Direction for Development of the Journal of Korean Academy of Adult Nursing through Analysis of Accepted and Rejected Papers (2007~2009).
Seon Young HWANG ; Jin Sun YONG ; Nam Sun KIM ; Myong hwa PARK ; Yeon Hwan PARK ; Eui Guem OH ; Hee Young OH ; Gwi Ryung SON HONG
Journal of Korean Academy of Adult Nursing 2010;22(1):103-112
PURPOSE: The purpose of this study was to explore the direction for development of the Korean Journal of Adult Nursing toward becoming an international journal through analysing the accepted and rejected papers during the last three years (2007-2009). METHODS: Two hundred and ten accepted papers were analyzed focusing on research methodology and key words using descriptive statistics. In addition, rejected papers were reviewed to analyze their study designs and key words. RESULTS: The proportion of quantitative research was 86.4% while the proportion of qualitative research was 9.5%. The majority of the qualitative research design was survey (71.8%). Sixty percent of the research had verbal consent and 32.7% had written consent from the participants. The prevailing data collection settings were hospitals (52.1%), and community (22.7%). The most frequently used research domain was health. It was noted that theoretical framework was rarely presented. The paper rejection rate was 31.5% and among the rejected paper, 75.3% was survey. CONCLUSION: The results of this analysis suggest that published studies have been improved and diversified compared with the papers published before the year 2007. However, translation research, clinical trials by nurses, and more detailed evaluation process for ethics in research need to be facilitated.
Adult
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Data Collection
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Humans
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Nursing Research
;
Qualitative Research
;
Rejection (Psychology)
;
Research Design