1.Effect of calcium ion on fMLP-stimulated neutrophils chemotaxis.
Jeong Won HWANG ; Noh Pal JUNG
Korean Journal of Immunology 1993;15(2):201-207
No abstract available.
Calcium*
;
Chemotaxis*
;
Neutrophils*
2.A clinical study of intestinal obstruction.
Won Jae SONG ; Jung Youl HWANG
Journal of the Korean Surgical Society 1993;44(6):1008-1019
No abstract available.
Intestinal Obstruction*
3.Acute appendicitis in children.
Sang Won CHO ; Jung Youl HWANG
Journal of the Korean Surgical Society 1991;40(6):801-812
No abstract available.
Appendicitis*
;
Child*
;
Humans
4.Correlation of multidrug resistance gene expression with hestologic grade in locally advanced breast cancer.
Jung Won BAE ; In Sun KIM ; Jung Woong HWANG
Journal of the Korean Cancer Association 1993;25(3):376-382
No abstract available.
Breast Neoplasms*
;
Breast*
;
Drug Resistance, Multiple*
;
Genes, MDR*
5.FRACTURE STRENGTH AND MARGINAL FIT OF IN-CERAM, COPY-MILLED IN-CERAM, AND IPS EMPRESS 2 ALL-CERAMIC BRIDGES.
Jung Won HWANG ; Jae Ho YANG ; Sun Hyung LEE
The Journal of Korean Academy of Prosthodontics 2001;39(6):641-658
All-ceramic restorations have become an attractive alternative to porcelain-fused-to-metal crowns. In-Ceram, and more recently IPS Empress 2 were introduced as a new all-ceramic system for single crowns and 3-unit fixed partial dentures. But their strength and marginal fit are still an important issue. This study evaluated the fracture resistance and marginal fit of three systems of 3 unit all-ceramic bridge fabricated on prepared maxillary anterior resin teeth in vitro. The 3 all-ceramic bridge systems were: (1) a glass-infiltrated, sintered alumina system (In-Ceram) fabricated conventionally, (2) the same system with copy-milled alumina cores (copy-milled In-Ceram), (3) a heat pressed, lithium disilicate reinforced glass-ceramic system (IPS Empress 2). Ten bridges of each system with standardized design of framework were fabricated. All specimens of each system were compressed at 55degree at the palatal surface of pontic until catastrophic fracture occurred. Another seven bridges of each system were fabricated with standard method. All of the bridge-die complexes were embedded in epoxy resin and sectioned buccolingually and mesiodistally. The absolute marginal discrepancy was measured with stereomicroscope at x50 power. The following results were obtained: 1. There was no significant difference in the fracture strength among the 3 systems studied. 2. The Weibull modulus of copy-milled In-Ceram was higher than that of In-Ceram and IPS Empress 2 bridges. 3. Copy-milled In-Ceram (112micrometer) exhibited significantly greater marginal discrepancy than In-Ceram (97micrometer), and IPS Empress 2 (94micrometer at P=0.05. 4. The lingual surfaces of the ceramic crowns showed smaller marginal discrepancies than mesial and distal points. There was no significant difference between teeth (incisor, canine) at P=0.05. 5. All-ceramic bridges of three systems appeared to exhibit sufficient initial strength and acceptable marginal fit values to allow clinical application.
Aluminum Oxide
;
Ceramics
;
Crowns
;
Denture, Partial, Fixed
;
Hot Temperature
;
Lithium
;
Tooth
6.Cerebral Oxygen Saturation Monitoring during Aortic Dissection Surgery: A case report.
Chang Gi KIM ; Jung Won HWANG ; Byung Moon HAM
Korean Journal of Anesthesiology 1997;33(5):962-966
Transcranial cerebral oximetry has been successfully used in a variety of neurosurgical conditions, primarily those associated with disturbed cerebral circulation. It has been also used in intraoperative monitoring of aortic dissection and surgical procedures performed under deep hypothermia and circulatory arrest. During disending aortic arch exposure, sudden cerebral oxygen saturation change from 63% to 48% was detected. After therapeutic bypass, cerebral oxygen saturation was increased to 65%. During aortic arch repair, deep hypothermic circulatory arrest with retrograde cerebral perfusion was applied for 130 min and cerebral oxygen saturation slowly decreased from 65% to 52%. Patient was discharged from hospital without neurologic complication and cognitive funtion disturbance.
Aorta, Thoracic
;
Circulatory Arrest, Deep Hypothermia Induced
;
Humans
;
Hypothermia
;
Monitoring, Intraoperative
;
Oximetry
;
Oxygen*
;
Perfusion
7.The Frequency of Apnea and Loss of Consciousness According to Propofol Dosage in Premedicated Patients with Midazolam.
Jung Won HWANG ; Yong Seok OH ; Sung Hee HAN
Korean Journal of Anesthesiology 1997;33(1):68-72
BACKGROUND: Respiratory depression with high dose of propofol during induction is one of the major complications. We studied the effects of midazolam as premedicant on frequency and duration of apnea and frequency of loss of consciousness in relation to single dose of propofol. METHODS: We selected 194 adult patients who had clear consciousness and no depression of respiration. We allocated patients randomly to control group and midazolam group. In midazolam group, we injected 0.06mg/kg of midazolam intravenously 10min before induction, and in control group, we did nothing. Under mask oxygenation with 100% oxygen, we administered a bolus of propofol (1, 1.5, 2 mg/kg to subgroup 1, 2, 3 respectively) intravenously. The change of respiration and loss of consciousness were observed. RESULTS: The frequency and duration of apnea increased with the dose of propofol in both control and midazolam group. But there were no difference between groups except frequency of apnea with 1.5 mg/kg of propofol. In control group, frequency of loss of consciousness increased with the increasing dose of propofol. But in midazolam group, nearly all the patients was slept without difference by the dose. CONCLUSIONS: Premedication with midazolam reduce the sleeping dose of propofol to induce anesthesia, so the frequency and duration of apnea which is caused by high dose of propofol can be decreased.
Adult
;
Anesthesia
;
Apnea*
;
Consciousness
;
Depression
;
Humans
;
Masks
;
Midazolam*
;
Oxygen
;
Premedication
;
Propofol*
;
Respiration
;
Respiratory Insufficiency
;
Unconsciousness*
8.Relationship between Psychosocial Factor and Positive Health Behavior Change after Diagnosis in Breast Cancer Patients.
Dooyoung JUNG ; Eun Jung SHIM ; Jun Won HWANG ; Bong Jin HAHM
Korean Journal of Psychosomatic Medicine 2012;20(2):91-97
OBJECTIVES: With the increase in cancer prevalence, the health behavior of cancer survivors has become an important issue. This study was conducted to examine the psychosocial correlates of behavior changes after cancer diagnosis. METHODS: 95 patients completed questionnaires assessing depression, anxiety, insomnia, posttraumatic stress symptoms, social constraints, personal beliefs about cancer cause and health-related behavior changes after cancer diagnosis. RESULTS: In the multiple logistic regression analysis, insomnia was the only significant predictor of positive change in physical behavior : normal sleep group(Odds ratio=9.462, 95% CI 1.738-51.509) and subthreshold insomnia group(Odds ratio=10.529, 95% CI 1.701-65.161) showed a larger increase compared to the insomnia group. In psychosocial behavior, low age, religion and causal belief in hormonal factors were independent factors that predicted increase in positive change. CONCLUSIONS: This study showed a difference between predictors of physical and psychosocial health behavior change after breast cancer diagnosis. Multi-faceted approaches are required to promote positive change in health behavior in cancer patients.
Anxiety
;
Breast
;
Breast Neoplasms
;
Depression
;
Health Behavior
;
Humans
;
Logistic Models
;
Prevalence
;
Questionnaires
;
Sleep Initiation and Maintenance Disorders
;
Survivors
9.Comparison of Thiopental Sodium and Propofol as an Induction Agent in Propofol-N2O Anesthesia for Cesarean Sections.
Jung Won HWANG ; Yong Seok OH ; Hye Jeong LEE
Korean Journal of Anesthesiology 2001;40(3):335-339
BACKGROUND: We compared thiopental sodium with propofol as induction agents under propofol-N2O anesthesia for cesarean sections. METHODS: We selected 68 pregnant women with a single fetus undergoing an elective cesarean section under general anesthesia and randomly allocated them to the thiopental sodium group (group N) or the propofol group (group P). Without premedication, thiopental sodium 5 mg/kg and succinylcholine 1 mg/kg were injected for induction in group N, and propofol 2 mg/kg and succinylcholine 1 mg/kg in group P. Propofol 10 mg/kg/hr was infused continuously with 50% N2O in both groups. We checked the blood pressure and the heart rate before and after injection. We analysed blood gas of maternal artery, umbilical artery, and umbilical vein at delivery and checked Apgar scores at 1 minute and 5 minutes after delivery. RESULTS: There was no significant difference in blood pressure, heart rate and Apgar scores between groups. Oxygen partial pressure (35.6 +/- 5.8 mmHg) and oxygen saturation (66.2 +/- 12.0%) of the umbilical vein in group P was higher than in group N (32.7 +/- 4.9 mmHg, 58.7 +/- 11.5%). Carbon dioxide partial pressure and pH did not differ between groups. CONCLUSIONS: There was no beneficial effect of thiopental sodium compared with propofol as an induction agent under propofol anesthesia. Propofol is a useful drug for cesarean sections.
Anesthesia*
;
Anesthesia, General
;
Arteries
;
Blood Pressure
;
Carbon Dioxide
;
Cesarean Section*
;
Female
;
Fetus
;
Heart Rate
;
Humans
;
Hydrogen-Ion Concentration
;
Oxygen
;
Partial Pressure
;
Pregnancy
;
Pregnant Women
;
Premedication
;
Propofol*
;
Succinylcholine
;
Thiopental*
;
Umbilical Arteries
;
Umbilical Veins
10.MAGNETIC OVERDENTURE.
Jung Won HWANG ; Sang Wan SHIN
The Journal of Korean Academy of Prosthodontics 1998;36(5):748-757
The stability and retention of mandibular complete denture have been a continuing problem for dentists and patients. Magnets have been investigated or used in clinical dentistry as retentive aids. The obvious advantages are that these attachments do not need spacial equipments or require frequent adjustment of replacement with use, and they likely transmit less lateral forces to the abutment. This articles discusses the scientific background and clinical application of high potency magnetic alloys in overdenture
Alloys
;
Dentistry
;
Dentists
;
Denture, Complete
;
Denture, Overlay*
;
Humans