No abstract available.
Polyarteritis Nodosa*

The common errors in preoperative treatment plan for the orthognathic surgery can be occurred during cast impression, cast mounting procedure with face-bow transfer, surgical stent fabrication, and so on. One of the most common errors exists during mounting process of the model on the articulator. Accurate mounting of dental casts to articulator should be achieved by transferring the 3- dimensional spatial relationship of the maxillary arch to an articulator. A face-bow is used for transfer this relationship to articulator, usually by relating the face-bow to a plane of reference of maxillary cast. The purpose of this study is evaluation of the accuracy of face-bow transferring of maxillary model to the articulator. The maxillary casts of thirty patients for orthognathic surgery were mounted on articulator with an face-bow instrument. The relationship of occlusal plane angle to Frankfort horizontal plane relations were compared the cephalogram with the cast-mounted articulator. As a result of this study, the significant difference between the maxillary occlusal planes angle in the cephalogram and articulator were found . The results were followed,1. The mean occlusal plane angle in cast-mounted articulator was 13.5.(SD+/-5.4).2. The mean occlusal plane angle in cephalogram was 10.4.(SD+/-4.3).3. The mean difference of occlusal plane angle between cast-mounted articulator and cephalogram was 3.3.(SD+/-4.6).According to the result, we should suggest that the occlusal plane angle to Frankfort plane in cast-mounted articulator is more steeper than that of cephalogram.And then, maxillofacial surgeon should try to get a more predictable result by suggesting the proper correction method and mounting the cast accurately.
Dental Articulators ; Dental Occlusion* ; Humans ; Orthognathic Surgery ; Stents

Sinonasal undifferentiated carcinoma(SNUC) is a distinct, relatively rare neoplasm arising in the nasal cavity and paranasal sinuses composed of undifferentiated epithelial cells and clinically characterized by a fulminant course. We report a case of SNUC in a 56-year old man who have had bilateral neck masses since one month ago before coming to our hospital. The paranasal computed tomography showed soft mass density in the left maxillary sinus and the nasal cavity with bone destruction in the anterior medial and the inferior maxillary sinus wall. This mass was extruded into the left orbital wall. Biopsy of the nasal mass and fine needle aspiration(FNA) of the neck mass were done. FNA revealed medium-sized neoplastic cells forming clusters or individually dispersed. Nuclei were round to oval, slightly to moderately pleomorphic, and hyperchromatic. Chromatin was finely granular, but occasionally was coarsely granular. Nucleoli varied from large to inconspicuous and the cytoplasm was scanty.
Biopsy ; Carcinoma* ; Chromatin ; Cytoplasm ; Epithelial Cells ; Humans ; Maxillary Sinus ; Middle Aged ; Nasal Cavity ; Neck ; Needles ; Orbit ; Paranasal Sinuses

No abstract available.
Humans ; Quality of Life* ; Renal Dialysis* ; Renal Insufficiency*

Purpose: The purpose of this study was to investigate the effects of a positive psychology-based mental health promotion program for high school students. Methods: This study used a randomized control group pretest-posttest design. A total of 47 high school students participated from two high schools in Gyeonggi Province. They were randomly assigned to an experimental group (n=24), which participated in the 8-session program, or to a control group (n=23). Psychological well-being, depression, and self-esteem were measured. Results: A significant difference in psychological well-being was observed between the two groups after the program. However, there were no significant between-group differences in depression or self-esteem. Conclusion The positive psychology-based mental program was effective at increasing psychological well-being in adolescents, especially high school students. This study suggests that a school curriculum could incorporate positive psychology-based mental programs for high school students to promote their mental health.

BACKGROUND: Healthcare-associated infections (HAIs) are among the most important threats to patient safety. When hospitalized children face these threats, there is morbidity, mortality, prolonged hospitalization, and increased healthcare costs. Research on local healthcare epidemiology is necessary to enhance collective knowledge and evidence formanaging this problem. METHODS: We performed a retrospective analysis of databases of patients who were diagnosed with HAIs at Chung-Ang University Hospital (CAUH) from 2007 through 2011. Cases were selected from the microbiology registry databases. The data on prevalence of HAIs in various wards and its annual trends were compared to previously reported nationwide data. Moreover, we analyzed the patterns of antibiotic susceptibility results for HAI pathogens. RESULTS: A total of 181 HAIs were identified in 122 patients. The HAI rate among pediatric patients at CAUH was 2.4/1,000 person-hospital days. Urinary tract infections (UTIs) (53 episodes, 29.3%) were the most common, followed by pneumonia (33 episodes, 18.2%). Staphylococcus aureus was found to be the most common gram-positive organism, whereas Escherichia coli was the most common gram-negative organism. Methicillin-resistant S. aureus (MRSA) comprised 84% of the S. aureus infections. Imipenem resistance was detected in 58.8% and 55.0% of Acinetobacter baumannii and Pseudomonas aeruginosa isolates, respectively. CONCLUSION: Between 2007 and 2011, UTIs were the most common type of HAIs, and MRSA was the most common pediatric HAI pathogen, both in the general ward and intensive care unit at the CAUH. Further research on the epidemiology and pathogenesis of HAIs is necessary and prevention measures should be implemented to prevent HAIs in children.
Acinetobacter baumannii ; Child ; Child, Hospitalized ; Delivery of Health Care ; Escherichia coli ; Health Care Costs ; Hospitalization ; Humans ; Imipenem ; Intensive Care Units ; Methicillin Resistance ; Methicillin-Resistant Staphylococcus aureus ; Microbial Sensitivity Tests ; Patient Safety ; Patients' Rooms ; Pneumonia ; Prevalence ; Pseudomonas aeruginosa ; Retrospective Studies ; Staphylococcus aureus ; Urinary Tract Infections

Recently, we have experienced with various changes in the health insurance. Korean government is implementing the prospective payment system(PPS) as a pilot project to reduce medical expenditure. Case management is an effective way to reduce costs, while not sacrificing quality of service, under the PPS. In this study, the integrated decision support system(DSS) for case management was presented to support two case management activities ; utilization management and discharge planning. This system can be used in three ways ; prospective, concurrent, and retrospective management. By monitoring cases from medical record database, the DSS provides basic patient information, payment information, medical service information to the case manager. In the future, data warehouse should be introduced to integrate various databases related to case management and to improve quality of information produced by the DSS.
Case Management* ; Cesarean Section* ; Critical Pathways ; Diagnosis-Related Groups* ; Female ; Health Expenditures ; Humans ; Insurance, Health ; Medical Records ; Patient Discharge ; Pilot Projects ; Pregnancy

In ocular surgery, many studies have been carried but in order to evaluate intraocular pressure chance during induction and maintenance of anesthesia. In this study, Vecuronium (Norcuron), new monoquaternary analogue of pancuronium, has been used in a group of patient undergoing elective sugery in order to evaluate its influe-nce on intraocular pressure. 40 patients without a history of eye digease, in age from 20 to 60 years, were evaluated. Their condition fell into ASA class l. On arrival, initial measurement of intraocular pressure(as control value) was taken with Shiotg tonometer after instilling a 0.5% pontocaine into conjuntival sac. Subsequent measurements were taken after thiopental injeotion as soon at the lid reflex was lost, then 2 minutes after Vecuronium injection, 1,3,5,10 and 20 minutes after endot-racheal intuhation. Blood pressure and pulse rate were measured together. The results were as follows, 1. At 2 minutes after intubation, intraocular pleasure was decreased as compared with the control value. 2. At 1 minute after intutation, intraocular pressure was more increased than the value of 2 minutes after vecuronium injection. but was not significantly changed as compared with control valule. 3. All values measured followed 3 minutes after intubation were significantly derceased. 4. Mean arterial pressure and pulse rate were increased at 1 minute after intubation but all the other values were not significantly changed as compared with control value.
Anesthesia ; Arterial Pressure ; Blood Pressure ; Heart Rate ; Humans ; Intraocular Pressure* ; Intubation ; Pancuronium ; Pleasure ; Reflex ; Tetracaine ; Thiopental ; Vecuronium Bromide*

STATEMENT OF PROBLEM: With increasing demand of the implant-supported prosthesis, it is advantageous to use the different platform width of the fixture according to bone quantity and quality of the patients. PURPOSE: The purpose of this study was to assess the loading distributing characteristics of two implant designs according to each platform width of fixture, under vertical and inclined loading using finite element analysis. Material and method : The two kinds of finite element models were designed according to each platform width of fixture (4.1mm restorative component x 11.5mm length, 5.0mm wide-diameter restorative component x 11.5mm length). The crown for mandibular first molar was made using UCLA abutment. Each three-dimensional finite element model was created with the physical properties of the implant and surrounding bone. This study simulated loads of 200N at the central fossa in a vertical direction, 200N at the outside point of the central fossa with resin filling into screw hole in a vertical direction and 200N at the buccal cusp in a 300 transverse direction individually. Von Mises stresses were recorded and compared in the supporting bone, fixture, and abutment screw. RESULTS: The stresses were concentrated mainly at the cortex in both vertical and oblique loading but the stresses in the cancellous bone were low in both vertical and oblique loading. Bending moments resulting from non-axial loading of dental implants caused stress concentrations on cortical bone. The magnitude of the stress was greater with the oblique loading. Increasing the platform width of the implant fixture decreased the stress in the supporting bone, fixture and abutment screw. Increased the platform width of fixture decreased the stress in the crown and platform. CONCLUSION: Conclusively, this investigation provides evidence that the platform width of the implant fixture directly affects periimplant stress. By increasing the platform width of the implant fixture, it showed tendency to decreased the supporting bone, fixture and screw. But, further clinical studies are necessary to determine the ideal protocol for the successful placement of wide platform implants.
Crowns ; Dental Implants ; Finite Element Analysis ; Humans ; Molar ; Prostheses and Implants*

In systemic hypertension, capillary resistance is highly elevated and' contractility of vascular smooth muscle is elevated. This is due to increased calcium uptake into the sarcoplasmic reticulum of the vascular smooth muscle. Recently, nifedipine, an antihypertensive medication which inhibits calcium uptake into the vascular smooth muscle is commonly used. It decreases the contractility of the vascular smooth muscle and causes the vessels to relax, which in turn lowers the blood pressure. In 1987, according to Rodriguez-Sargent et al. the increased incidence of cataract in Dahl-salt sensitive rats(DSR) was due to increasd water and sodium contents and decreased potassium content. In this investigative study on hypertension, the water, Sodium and potassium contents in Spontaneous Hypertensive Rats(SHR) were measured. After treatment with nifedipine in SHR, we observed decreased blood pressure along with the changes in water, sodium and potassium contents of the lenses. The following results were obtained from our experiments. 1. In normal SDR, The blood pressure did not decrease with nifedipine injection. 2. After 3-7 days of nifedipine injection bidaily, the blood pressure of SHR did not decrease. 3. After 2 weeks of nifedipine injection bidaily, the blood pressure of the SHR decreased slightly and after 4 weeks of nifedipine injection bidaily, the blood pressure of SHR decreased significantly. 4. Water and sodium contents of SHR were higher than that of SDR and the potassium content was similar to that of SDR. 5. The elevated water and sodium contents of SHR decreased along with decrease of blood pressure, and after 2 weeks of nifedipine injection, showed similar level as the contents of SDR lenses. 6. Potassium contents of SHR lenses showed no change were similar to SDR lines except the 4 weeks nifedipine injection group which showed higher potasslum contents.
Animals ; Blood Pressure* ; Calcium ; Capillary Resistance ; Cataract ; Hypertension ; Incidence ; Muscle, Smooth, Vascular ; Nifedipine* ; Potassium ; Rats* ; Sarcoplasmic Reticulum ; Sodium ; Water*