Purpose: This study investigated the effect of practice of donning and doffing level D personal protective equipment (PPE) based on augmented reality (AR) on the knowledge and performance confidence, practical immersion, practical satisfaction, and practical experience of nursing students. Methods: This mixed-method study included 28 participants in the experimental group and 28 in the control group in C city. The intervention in the experimental group was practice of donning and doffing level D PPE based on AR and the control group received video-based training. Quantitative data were analyzed using the IBM SPSS program, and qualitative data were subjected to content analysis. Results: There were significant differences in performance confidence (t=3.17, p=.002) and practice satisfaction (z=-2.13, p=.033), but not in knowledge (z=-0.90, p=.366) and practice immersion (t=1.71, p=.093) regarding PPE. In the experience of nursing students who participated in AR-based practice, the facilitating factors were “good concentration in practice,” “can use the technology accurately,” “the skills remain in memory for a long time,” and “the practice was interesting and fun.” The obstacles to AR-based practice were “using smart glasses to watch AR content was uncomfortable” and “it was difficult to adapt to AR-based content.” Conclusion Based on the results of this study, we suggest applying AR-based practice in practical education to increase nursing students' performance confidence and practice satisfaction.

Purpose: This study investigated the effect of practice of donning and doffing level D personal protective equipment (PPE) based on augmented reality (AR) on the knowledge and performance confidence, practical immersion, practical satisfaction, and practical experience of nursing students. Methods: This mixed-method study included 28 participants in the experimental group and 28 in the control group in C city. The intervention in the experimental group was practice of donning and doffing level D PPE based on AR and the control group received video-based training. Quantitative data were analyzed using the IBM SPSS program, and qualitative data were subjected to content analysis. Results: There were significant differences in performance confidence (t=3.17, p=.002) and practice satisfaction (z=-2.13, p=.033), but not in knowledge (z=-0.90, p=.366) and practice immersion (t=1.71, p=.093) regarding PPE. In the experience of nursing students who participated in AR-based practice, the facilitating factors were “good concentration in practice,” “can use the technology accurately,” “the skills remain in memory for a long time,” and “the practice was interesting and fun.” The obstacles to AR-based practice were “using smart glasses to watch AR content was uncomfortable” and “it was difficult to adapt to AR-based content.” Conclusion Based on the results of this study, we suggest applying AR-based practice in practical education to increase nursing students' performance confidence and practice satisfaction.

Purpose: This study investigated the effect of practice of donning and doffing level D personal protective equipment (PPE) based on augmented reality (AR) on the knowledge and performance confidence, practical immersion, practical satisfaction, and practical experience of nursing students. Methods: This mixed-method study included 28 participants in the experimental group and 28 in the control group in C city. The intervention in the experimental group was practice of donning and doffing level D PPE based on AR and the control group received video-based training. Quantitative data were analyzed using the IBM SPSS program, and qualitative data were subjected to content analysis. Results: There were significant differences in performance confidence (t=3.17, p=.002) and practice satisfaction (z=-2.13, p=.033), but not in knowledge (z=-0.90, p=.366) and practice immersion (t=1.71, p=.093) regarding PPE. In the experience of nursing students who participated in AR-based practice, the facilitating factors were “good concentration in practice,” “can use the technology accurately,” “the skills remain in memory for a long time,” and “the practice was interesting and fun.” The obstacles to AR-based practice were “using smart glasses to watch AR content was uncomfortable” and “it was difficult to adapt to AR-based content.” Conclusion Based on the results of this study, we suggest applying AR-based practice in practical education to increase nursing students' performance confidence and practice satisfaction.

BACKGROUND: Osteoporosis is an important and common medical problem in postmenopausal women. Depression is another major public health concern. Due to the high prevalence of both depression and osteoporosis, even a weak association between them might result in a greater health problem. We have investigated whether depression is associated with bone mineral density (BMD) in peri- and postmenopausal women. METHODS: The study subjects who visited the office of family medicine department and the health screening and diagnosis center in one general hospital from January to May, 2000 were selected. BMD was measured at the lumbar spine using Dual Energy X-ray Absorptiometry. We evaluated the depression scale using the Beck Depression Inventory. The subjects who had disorders known to interfere with bone metabolism or those who had taken medication related to depression were excluded from the study. RESULTS: Significant positive correlation were noted between BMD and height and weight (P<0.05) but no correlation was found with depression in perimenopausal women. In postmenopausal women, significant negative correlation was noted between BMD and age, and postmenopausal duration and depression. Significant positive correlation was found between BMD and height and weight (P<0.05). CONCLUSION: Our results showed that depression was associated with BMD in postmenopausal women which was independent of other factors strongly associated with osteoporosis.
Absorptiometry, Photon ; Bone Density* ; Depression* ; Diagnosis ; Female ; Hospitals, General ; Humans ; Mass Screening ; Menopause ; Metabolism ; Osteoporosis ; Prevalence ; Public Health ; Spine

PURPOSE: The purpose of this study was to evaluate the proper axial thickness of zirconia abutment applied to implant in the anterior region. MATERIALS AND METHODS: Zirconia abutments were prepared at different axial wall thickness by processing pre-sintered zirconia blocks via CAD/CAM to obtain equal specimens. The abutments were each produced with a thickness of 0.5 mm (Group 1), 0.8 mm (Group 2), 1.2 mm (Group 3), or 1.5 mm (Group 4). The implant used in this study was a external connection type one (US, Osstem, Pussan, Korea) product and the zirconia abutment was prepared via replication of a cemented abutment. The crowns were prepared via CAM/CAM with a thickness of 1.5 mm and were cemented to the abutments using RelyX(TM) UniCem cement. A universal testing machine was used to apply load at 30 degrees and measure fracture strength of the zirconia abutment. RESULTS: Fracture strength of the abutments for Group 1, Group 2, Group 3, and Group 4 were 236.00 +/- 67.55 N, 599.00 +/- 15.80 N, 588.20 +/- 33.18 N, and 97.83 +/- 98.13 N, respectively. Group 1 showed a significantly lower value, as compared to the other groups (independent Mann-Whitney U-test. P<.05). No significant differences were detected among Group 2, Group 3, and Group 4 (independent Mann-Whitney U-test. P>.05). CONCLUSION: Zirconia abutment requires optimal thickness for fracture resistance. Within the limitation of this study, > 0.8 mm thickness is recommended for zirconia abutment in anterior implants.
Crowns

PURPOSE: To translate and evaluate the reliability and validity of the Korean version of the National Eye Institute Visual Functioning Questionnaire-25 (NEI-VFQ-25). METHODS: Two bilingual ophthalmologists independently translated the original English version of the NEI-VFQ-25 into written Korean. A panel of the Korean Retina Society reviewed the translations to form a single reconciled forward translation of the Korean version of the NEI-VFQ-25. Another ophthalmologist back-translated this first draft into English. Both the first draft and back-translated draft were edited by a professional translator. To evaluate the correlation and validity, results between the original NEI-VFQ-25 and the Korean version, completed by the bilingual participants, were compared. RESULTS: The Korean version of the National Eye Institute Visual Functioning Questionnaire-25 was developed by translation, back-translation, and expert supervision. Results from 23 bilingual participants between the original NEI-VFQ-25 and the Korean version were compared and showed statistically significant correlation, with a Spearman's correlation coefficient of 0.4 or greater. The Kolmogorov-Smirnov test results showed no statistically significant differences between the two questionnaires. CONCLUSIONS: Translation and validation of the Korean version of the NEI-VFQ-25 was achieved.
National Eye Institute (U.S.) ; Organization and Administration ; Surveys and Questionnaires ; Reproducibility of Results ; Retina ; Translations

OBJECTIVE: Pullulan derivatives (PD) can be used to make self-assembled hydrogel nanoparticles which are responsive to ionic strength. The aim of this study is to evaluate the potential of PD as a retaining carrier of radioisotope inside tumors. MATERIALS AND METHODS: Four types of PD were evaluated which included pullulan acetate (PA), succinylated PA (SPA), PA-DTPA and SPA-DTPA conjugates. They were radiolabeled with Tc-99m. Labelling efficiencies were determined at 30 min, 1, 2, 4 and 12 hours after radiolabeling. CT-26 colon cancer cells were subcutaneously injected into Balb/c mice. After 2 weeks of subcutaneous injection, Tc-99m-labelled PD (Tc-99m-PD) were injected into the tumors. Whole body images of mice were obtained at 30 min, 1, 2, and 12 hr after intratumoral injection. All twenty mice were grouped into four groups by largest diameter; control A (largest diameter = 5 mm, n = 5), control B (largest diameter = 10 mm, n = 5), pullulan A (largest diameter = 5 mm, n = 5), pllulan B (largest diameter = 10 mm, n = 5). Dynamic images were obtained for 1 hour after intratumoral injection. Static images were obtained at 1 hr, 2 hr, 3 hr and 4 hr after intratumoral injection with Tc-99m pertechnetate and Tc-99m-PA. Target-to-background ratios and retention rates were calculated. RESULTS: Labeling efficiencies of PA, SPA, PA-DTPA and SPA-DTPA were 94.5 +/- 5.9%, 97.8 +/- 3.5% 94.2 +/- 3.8%, and 92.5 +/- 6.2%, respectively (p> 0.05). Percent retention rates (%RR) of PA and PA-DTPA were significantly higher than those of control, however, those of SP-DTPA and SPA became similar to control at 4 and 12 hr, respectively. %RR of pullulan A and pullulan B at 1, 4 and 8 hr is significantly higher than that of control (p < 0.05). However, %RR between pullulan A and pullulan B were similar. CONCLUSION: The ionic strength dependent PD-nanoparticles are retained in the tumor. No difference of %RR according to tumor size was noted. Therapeutic application of PD labelled with beta- or alpha- emitting radionuclides can be expected.
Animals ; Body Image ; Colonic Neoplasms ; Hydrogel ; Injections, Subcutaneous ; Mice* ; Nanoparticles ; Osmolar Concentration ; Radioisotopes ; Sodium Pertechnetate Tc 99m

(188)Re(Rhenium) is easily obtained from an in-house (188)W/(188)Re generator that is similar to the current (99)Mo/(99m)Tc generator, making it very convenient for clinical use. This characteristic makes this radionuclide a promising candidate as a therapeutic agent. Polyethylenimine (PEI) is a cationic polymer and has been used as a gene delivery vector. Positively charged materials interact with cellular blood components, vascular endothelium, and plasma proteins. In this study, the authors investigated whether intratumoral injection of (188)Re labeled transferrin (Tf)-PEI conjugates exert the effect of radionuclide therapy against the tumor cells. When the diameters of the Ramos lymphoma (human Burkitt's lymphoma) xenografted tumors reached approximately 1 cm, 3 kinds of (188)Re bound compounds (HYNIC-PEI-Tf, HYNIC-PEI, (188)Re perrhenate) were injected directly into the tumors. There were increases in the retention of (188)Re inside the tumor when PEI was incorporated with (188)Re compared to the use of free 188Re. The (188)Re HYNIC-Tf-PEI showed the most retention inside the tumor (retention rate=approximately 97%). H&E stain of isolated tumor tissues showed that (188)Re labeled HYNIC-PEI-Tf caused extensive tumor necrosis. These results support (188)Re HYNIC-PEI-Tf as being a useful radiopharmaceutical agent to treat tumors when delievered by intratumoral injection.
Animals ; Burkitt Lymphoma/pathology/*radiotherapy ; Cations ; Female ; Injections, Intralesional ; Mice ; Mice, Inbred BALB C ; Pilot Projects ; Polyethyleneimine/chemistry/*pharmacology ; Radioisotopes/chemistry/*pharmacology ; Research Support, Non-U.S. Gov't ; Rhenium/chemistry/*pharmacology

We experienced a case of a gallbladder carcinoma detected incidentally by elevated serum alpha- fetoprotein. The patient had a symptom of mild intermittent indigestion, and a routine medical examination revealed elevation of serum alpha-fetoprotein. A mass, 4 cm 3 cm, was located in the gallbladder and it had not infiltrated the liver. The serum level of alpha-fetoprotein decreased after a cholecystectomy. The gallbladder mass was an adenocarcinoma of hepatoid differentiation. Cytoplasms of the tumor cells had positive reactivity to immunohistochemical staining of alpha-fetoprotein. In the course of postoperative follow up, the serum alpha-fetoprotein level increased continuously, and abdominal CT scanning proved multiple intrahepatic metastases.
Adenocarcinoma ; alpha-Fetoproteins ; Cholecystectomy ; Cytoplasm ; Dyspepsia ; Fetal Proteins ; Follow-Up Studies ; Gallbladder* ; Humans ; Liver ; Neoplasm Metastasis ; Tomography, X-Ray Computed

Bartter syndrome is a renal tubular defect in electrolyte transport characterized by hypokalemia, metabolic alkalosis, hyperreninemia, hyperaldosteronism, normal blood pressure, and other clinical symptoms. As a clinical and genetical heterogeneous disorder, this syndrome can be classified into two clinical variants, antenatal Bartter syndrome and classic Bartter syndrome according to the onset age. Nephrocalcinosis is common in antenatal Bartter syndrome, but is rare in classic Bartter syndrome. It can also be classified into five genetic subtypes by the underlying mutant gene, all of which are expressed in the tubular epithelial cells of the thick ascending limb of the loop of Henle. Patients with Bartter syndrome type 1, 2 and 4 present at a younger age than classic Bartter syndrome type 3. We have experienced a case of Bartter syndrome with nephrocalcinosis in a 42-year-old woman diagnosed by biochemical and radiologic studies. We had successful response with potassium chloride and spironolactone.
Adult* ; Age of Onset ; Alkalosis ; Bartter Syndrome* ; Blood Pressure ; Epithelial Cells ; Extremities ; Female ; Humans ; Hyperaldosteronism ; Hypokalemia ; Loop of Henle ; Nephrocalcinosis* ; Potassium Chloride ; Spironolactone