The purpose of this study was to investigate the possibility on recycling of IPS Empress ceramic for the wide use of esthetically pleased IPS-Empress ceramic in clinical prosthodontic treatment. The specimens were made of first, second, and third pressed IPS Empress ceramic and were immersed in 0.05% methylene blue solution for 24hours. The amount of color change before and after stainning was measured with colorimeter(Model Tc-6Fx, Denshoku Co., Tokyo, Japan). The change of E in first pressed ceramic was 18.33 and those in second and third pressed ceramics were 19.33 and 19.93 respectively. Although there was statistical difference among them, the differences were minute and acceptable. From the results of this study, the possibility of recycling of IPS Empress ceramic could be suggested.
Ceramics* ; Methylene Blue ; Prosthodontics ; Recycling

The bond failure of resin teeth to denture base resin is one of the failure in prosthodontic treatment. The purpose of this study was to evaluate the bond strength of artificial resin teeth to the denture base resins. Specimens were made with heat curing acrylic resins (Vertex Rs, Lucitone 199) and artificial resin teeth (Tiger, Trubyte biotone, Endura, Orthosit, Trubyte bioform IPN) and the bond strength were measured with testing machine (Zwick, Germany) and the mode of bond failure were observed. The results were as follows; 1. The bond strength of Vertex Rs to artificial resin teeth was the highest in Trubyte biotone, and It was the lowest in Tiger and Trubyte bioform IPN 2. The bond strength of Lucitone 199 to artificial resin teeth were higher in Orthosit and Trubyte bioform IPN than in Tiger and Trubyte biotone. 3. The bond strength of Trubyte biotone to Vertex Rs was higher than to Lucitone 199 and that of the Trubyte bioform IPN to Lucitone 199 was higher than to Vertex Rs. 4. Nearly all bond failures of specimens occured cohesively within the resin teeth.
Acrylic Resins ; Denture Bases* ; Dentures* ; Hot Temperature ; Prosthodontics ; Tigers ; Tooth*

From June, 1988 to Feb, 1989 a total of 47 cases of percutaneous mitral valve balloon valvuloplasty(PMV) and 4 cases of aortic valve balloon valvuloplasty(PAV) were done at the Guro Hospital of the Korea University. Among these patients first 18 patients of PMV are the subjects of this study. 1) Among a total of 28 patients,10 patients were male and 18 patients were female patients. The age of the patients were between 21 and 59 years with the mean age of 40.9+/-12.2 Aortic Valve ; Atrial Fibrillation ; Balloon Valvuloplasty* ; Blood Pressure ; Cardiac Output ; Cardiac Tamponade ; Catheters ; Drainage ; Electrocardiography ; Embolism ; Female ; Humans ; Korea ; Male ; Middle Cerebral Artery ; Mitral Valve Insufficiency ; Mitral Valve Stenosis* ; Mitral Valve* ; Sepsis ; Thrombosis ; Vascular Resistance

No abstract available.
Family Practice* ; Follow-Up Studies* ; Humans ; Internship and Residency*

Orthostatic hypotension with other signs of progressive neuronal degeneration particularly affecting the autonomic nervous system has been recognized independently and is called Shy-Drager syndrome. Degenerative changes in the autonomic ganglia, loss of neurons in the intermediolateral columns and degenerative changes in the neurons of the cortex and basal ganglia have been reported on examination of this condition. The authors report a case of Shy-Drager Syndrome with symptoms of orthosatatic hypotension, dysarthria, Parkinson's features, muscle wasting, sexual impotence, atonic bladder and loss of sweating.
Autonomic Nervous System ; Basal Ganglia ; Dysarthria ; Erectile Dysfunction ; Ganglia, Autonomic ; Hypotension ; Hypotension, Orthostatic ; Male ; Neurons ; Shy-Drager Syndrome* ; Sweat ; Sweating ; Urinary Bladder

Orthostatic hypotension with other signs of progressive neuronal degeneration particularly affecting the autonomic nervous system has been recognized independently and is called Shy-Drager syndrome. Degenerative changes in the autonomic ganglia, loss of neurons in the intermediolateral columns and degenerative changes in the neurons of the cortex and basal ganglia have been reported on examination of this condition. The authors report a case of Shy-Drager Syndrome with symptoms of orthosatatic hypotension, dysarthria, Parkinson's features, muscle wasting, sexual impotence, atonic bladder and loss of sweating.
Autonomic Nervous System ; Basal Ganglia ; Dysarthria ; Erectile Dysfunction ; Ganglia, Autonomic ; Hypotension ; Hypotension, Orthostatic ; Male ; Neurons ; Shy-Drager Syndrome* ; Sweat ; Sweating ; Urinary Bladder

Objective To study the clinical value of ~(18)F-fluorodeoxyglucose(~(18)F-FDG) coincidence SPECT imaging in the therapy of malignant lymphoma. Methods Serial ~(18)F-FDG SPECT imaging were performed on 42 patients with malignant lymphoma before and after treatment.The results were compared with other conventional imaging.Patients were divided into two groups. Twenty-seven new-diagnosed patients(group Ⅰ) and 15 operated patients(group Ⅱ) had ~(18)F-FDG imaging pre-and post-chemotherapy. Results(In group Ⅰ,) 15 cases(achieved) clinical remission,five cases relapsed and one case progressed.In group Ⅱ,tumor residues were detected in four patients,and one patient relapsed. Conclusion Serial ~(18)F-FDG imaging during treatment is very useful for therapeutic evaluation in malignant lymphoma.

Plasmapheresis has been used for some conditions during pregnancy and puerperium, such as hemolysis, elevated liver enzymes, and low platelet (HELLP) syndrome. We present one case of the HELLP syndrome which was treated with plasmapheresis and also review the indications, complications and guidelines for repetitive plasma exchange.
Blood Platelets ; Female ; HELLP Syndrome* ; Hemolysis ; Liver ; Plasma Exchange ; Plasmapheresis* ; Postpartum Period* ; Pregnancy

BACKGROUND: Recently in Europe, some epidemiologic studies reported that various physical symptoms and social, psychological wellbeing are related to low blood pressure. But in Korea, none has been studied on symptoms related to low blood pressure yet. In this study, we would like to see if the somatic symptoms and social, psychological wellbeing shown t,o be related to low SBP is truly associated with it. METHODS: Questionnaire interview was done to the people who have visited Department of family practice in two university hospitals and two health promotion center from April, 1996 to August, 1996. Seven somatic symptoms and Psychosocial Wellbeing Index(PWI) for the evaluation of social, psychological health status were included in the questionnaire. SAS statistics packages was used in statistical precess. We used logistic regression to see the frequency of somatic symptoms related to the systolic blood pressure(SBP) group and the confirmation of confounding variables was done by ANOVA. RESULTS: Total of 304 completed the questionnaire. Average age was 44 years old and average SBP was 115.4+/-16.4. 84 of them (27.6%) felt that they had a low BP & 69 were women compared to 21 men, being meaningfully more common. 107(35.2%) people answered that they had heard that their blood pressure was low and 66% were from doctors. Only 32(38.1%) of the group who felt of having hypotensive symptoms and 38 of the group who heard of having hypotension actually had SBP of below 100 mmHg. Vocation, income, smoking & alcohol history, present illness, marital status were not significant as a confounding variable. SBP of 100 or below group had a less presentation of fatigue & significantly higher PWI than the group of above 100mmHg (p<0.05). The group who felt that they had a low BP had more complaints of fatigue, dizziness, palpitation, cold hands and feet and had significnatly higher PWI than the group who didnt. CONCLUSIONS: SBP of 100mmHg or below group has more frequent manifestion of fatigue and low level of sociopsycholgiacl health index than the above 100mmHg group. But most of the people who complained of hypotensive symptoms didnt have low blood pressure and a lot of them misunderstand of having low blood pressure and after checking blood pressure by doctors, so great deal of caution is called for when seeing patients.
Adult ; Blood Pressure* ; Confounding Factors (Epidemiology) ; Dizziness ; Epidemiologic Studies ; Europe ; Family Practice ; Fatigue ; Female ; Foot ; Hand ; Health Promotion ; Hospitals, University ; Humans ; Hypotension ; Korea ; Logistic Models ; Male ; Marital Status ; Occupations ; Smoke ; Smoking ; Surveys and Questionnaires

Effects of ketamine on the cardiovascular system of tortoises was observed in this study. Ketamine elevated blood pressure and increased contractile performance and heart rate of the tortoise's auricle. The hypertensive effect of ketamine was abolished by treatment with hexametbonium or Regitine, while increment of heart rate due to ketamine was not affected by treatment of hexamethonjum, Inderal, or Regitine. In vitro experiments, ketamine increased contractile performance and heart rate of the auricle. These effects of ketamine were not affected by Regitine, Inderal,cocaine, or reserpine pretreatment. Synergism of ketamine and norepinephrine was also observed. Low bath temperature did not influence the effects of ketamine but high bath temperature inhibited the effects of the drug. In the electrically stimulated preparations, field stimulation did not affect the chronotropic and inotropic effects of ketamir, but direct stimulation abolished these effects of the drug. From the above results, it is possible to say that ketamine probably has dual actions on the cardiovascular system of tortoises, i, e., hypertensive action due to stimulation of sympathetic nervous system, and chronotropic and inotropic actions due to direct stimulation of cardiac muscle.
Baths ; Blood Pressure ; Cardiovascular System* ; Heart Rate ; In Vitro Techniques ; Ketamine* ; Myocardium ; Norepinephrine ; Phentolamine ; Propranolol ; Reserpine ; Sympathetic Nervous System