No abstract available.
Cervix Uteri* ; Female ; Humans

No abstract available.

No abstract available.
Animals ; Rats*

The purpose of this study was to investigate the causes of food impaction and to explore solutions as well. For this study, 39 patients with food impaction wee selected. 77 contact areas in these patients were investigated mobility, tightness of contact area, gingival index, plaque index, attachment loss, alveolar bone loss, proximal caries, marginal ridge distance and occlusal relationships. The results were as follows ; 1. Teeth without distal support were found to be the most frequent site of food impaction (41.6%). Food impaction was found to be more frequent in the upper teeth (66.2%) than the lower teeth (33.8%). 2. Food impaction was found in tight contact cases (71.4%). Alveolar bone loss was not found in the early stage of food impaction (83.1%) 3. The distance between the marginal ridges of food impaction sites (mean=0.48mm) was shorter than that of the control group. (mean=0.77mm) (p<0.001) 4. In 18.2% of t he cases, proximal carries were found at the food impaction site. 5. Food impaction affected patient's occlusion with the following frequencies ; cusp to marginal ridge relationship (72.7%), cusp to fossa relationship (3.9%) and stepped relationship (23.4%).
Alveolar Bone Loss ; Humans ; Periodontal Index ; Tooth

A polymerase chain reaction (PCR) method for detection of the pathogenic Yersinia pestis from other Yersinia spp. was developed. Five Y. pestis strains, ninety-two other Yersinia species and twenty-four Enterobacteriaceae strains were collected in Korea and from other countries. Oligonucleotide primers were designed from pathogenic gene of antiphagocytic protein capsule gene (fra 1) and plasminogen activator gene (pla). The 428 bp DNA fragment was amplified from five Y. pestis which contained the fra I gene. No product was amplified from other Yersinia species and other strains of the Enterobacteriaceae. The 439 bp DNA fragment was amplified from three K pestis which contained the pla gene. No product was amplified from two Y. pestis, other Yersinia species and other strains of the Enterobacteriaceae. These showed that the designed primers were specific for detection of Y. pestis among other Yersinia species and Enterobacteriaceae strains. Amplification was successful whether the template was derived from purified DNA or from aliquots of boiled bacterial suspension. The detection limits were 100 pg of DNA and 100 colony forming units (CFU) for fra I and 100 pg DNA and 10 CFU for pla, respectively. Our results prove that the PCR method using specific primers for Y. pestis is a rapid and convenient procedure for routine clinical detection and identification of Y. pestis.
DNA ; DNA Primers ; Enterobacteriaceae ; Korea ; Limit of Detection ; Plasminogen Activators ; Polymerase Chain Reaction* ; Stem Cells ; Yersinia pestis* ; Yersinia*

No abstract available.
Chorion* ; Chorionic Villi Sampling* ; Chorionic Villi* ; Female ; Pregnancy

Coronavirus disease (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 has become a global pandemic and is now the most threatening public health issue. Patients with the infection present with high fever and pneumonia with respiratory symptoms, but some patients also develop digestive symptoms such as diarrhea, vomiting, and abdominal pain. This may be the basis for the transmission route of the new virus, not only for respiratory infection through droplets but also for fecal-to-oral transmission. In addition, the high expression level of angiotensin-converting enzyme 2 on the surface cells in the gastrointestinal tract may support the occurrence of digestive symptoms and the possibility of fecal-to-oral transmission. Recent studies have shown positive fecal polymerase chain reaction (PCR) test results in patients with the infection who showed digestive symptoms. Therefore, we reviewed the related literature on the occurrence of digestive symptoms in patients with COVID-19 and present the usefulness and clinical application of the fecal PCR test for identifying the potential infection route and criteria for isolation.

No abstract available.
Aged ; Anti-Bacterial Agents/administration & dosage ; Drainage ; Gases ; Humans ; Klebsiella pneumoniae/isolation & purification ; Liver Abscess, Pyogenic/microbiology/*radiography/therapy ; Male ; Tomography, X-Ray Computed ; Treatment Outcome

PURPOSE: During the high-stake examinations such as OSCE (Objective structured clinical examination) or CPX (clinical performance exam), test security is generally accepted as a major concern for test validity. This study was conducted to investigate the effect on examinee' s scores of repeated, serial administrations of essentially the same standardized patient (SP) -based performance exam. METHODS: A performance-based examination using eight SP cases was administered to 123 senior medical students at Hanyang University School of Medicine. Students were randomly assigned to one of 16 groups of 8 students each. Three groups were tested serially each day, requiring 5 days for the complete administration of the examination. We compared the mean scores of the five groups of the examinees tested on different days with ANOVA and linear trends with multiple regression analyses. RESULTS: For both checklist scores and written scores during the interstation work, the mean scores of the first day groups were significantly lower compared to subsequent groups. And, there were slight linear trends in the scores over the five days. Scores related to case-specific history taking, information sharing, and clinical courtesy were significantly affected by the sharing of information between students. Scores related to patient satisfaction, physical exam, and physician-patient interaction were not influenced by the same pattern of behaviour. CONCLUSION: Test security may be violated during SP-based performance exams even though the checklists are not accessible to the examinees. It would be desirable for the test-givers to prepare alternative forms of cases for maintaining the validity of SP-based performance exams.
Checklist ; Clinical Competence ; Humans ; Information Dissemination ; Patient Satisfaction ; Students, Medical

It has been widely accepted that complete surgical resection of hepatoblastoma is essential for long-term survival. But unfortunately less that 50% of hepatic tumors in children can be totally removed at the time of diagnosis. This report is to present the experience of successful resection of hepatoblastoma after concurrent radiotherapy with transarterial chemoinfusion in a child. We believe this modality of treatment enables complete resection of unresectable hepatoblastoma, which is resistant to the systemic chemotherapy.
Child ; Diagnosis ; Drug Therapy ; Hepatoblastoma* ; Humans ; Radiotherapy*