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Objective:To investigate the application and effect of the virtual reality (VR) combined with the augmented reality (AR) integrated teaching system in stomatology general medical education of clinical medicine students.Methods:A total of 160 undergraduates from the five-year clinical medicine Batch 2015 of Naval Medical University were randomly divided into VR+AR group and traditional group, with 80 students in each group. A comparative analysis was made on the previous and teaching achievements of the two groups of students, and a questionnaire survey was conducted after the completion of the class. Epidata 3.0 was used to input questionnaire data, and SPSS 23.0 software was used to carry out t test, chi-square test and Fisher precision test. Results:There was no statistical difference in written test scores between the VR+AR group and the traditional group [(52.65±3.76) vs. (51.90±3.46), P=0.516], but the VR+AR group was significantly higher than the traditional group in case analysis scores [(35.85±2.56) vs. (31.40±2.96), P < 0.001] and overall performance [(88.50±4.95) vs. (83.30±4.86), P= 0.002]. The questionnaire survey results showed that the scores of "teaching mode" [(92.30±6.90) vs. (85.20±7.30), P<0.001], "teaching method" [(91.70±5.90) vs. (86.00±6.70), P=0.012] and "teaching improvement" [(90.70± 8.70) vs. (82.30±8.40), P<0.001] in VR + AR group were significantly higher than those in the traditional teaching group. Conclusion:The VR combined with AR integrated teaching system can significantly improve teaching performance and teaching quality, and is convenient for teaching demonstrations and simulation operations in small oral spaces, and is especially suitable for oral general medical education for clinical medicine.
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Objective:To explore a safe, effective and rapid rescue method and key points for the management of vascular surgical emergencies in an area under guarantine against COVID-19(corona virus disease 2019).Methods:Under the guidance of COVID-19 diagnosis and treatment guidelines , 4 cases of vascular surgical emergency patients admitted to our department from Feb 1 to Feb 10, 2020 were screened for COVID-19 and given emergency vascular surgical treatment.Results:Two patients had acute thoracic aortic dissection, one patient had acute left foot ulcer with infection, one patient had severe carotid artery stenosis and frequent TIA. All patients were diagnosed quickly according to the three-level triage process. Endovascular repair(TEVAR) was performed in 2 cases, carotid stenting in 1 case, and left foot amputation in 1 case. Two patients running postoperative fever below 38.5℃ were safely excluded out of COVID-19 and Cured. There were no other major morbidities nor mortality.Conclusions:Under the COVID-19 prevention and control guidelines, the establishing of a comprehensive prevention and control system of patient-medicine-care-management helps to perform confine operation on vascular surgical emergency.
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Objective@#To explore a safe, effective and rapid rescue method and key points for the management of vascular surgical emergencies in an area under guaranting Covid-19 (corona virus disease 2019) .@*Methods@#Under the guidance of COVID-19 diagnosis and treatment guidelines , 4 cases of vascular surgical emergency patients admitted to our department from Feb 1 to Feb 10, 2020 were screened for COVID-19 and given emergency vascular surgical treatment.@*Results@#Two patients had acute thoracic aortic dissection, one patient had acute left foot ulcer with infection, one patient had severe carotid artery stenosis and frequent TIA. All patients were diagnosed quickly according to the three-level triage process. Endovascular repair (TEVAR) was performed in 2 cases, carotid stenting in 1 case, and left foot amputation in 1 case. Two patients running postoperative fever below 38℃ were safely excluded COVID-19 and cured. There were no other major morbidities nor mortality.@*Conclusions@#Under the COVID-19 prevention and control guidelines, the establishing of a comprehensive prevention and control system of patient-medicine-care-management helps to perform confine operation on vascular surgical emergency.
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Objective To discuss the feasibility, safety and validity of the use of ViabahnTM self-expanding covered stent in endovascular repair of peripheral traumatic pseudoaneurysm (TPA). Methods During the period from June 2012 to April 2014, a total of 8 patients with peripheral TPA were admitted to the Department of Vascular and Endovascular Surgery of Shanghai Changzheng Hospital . The clinical data were retrospective analyzed. The lesions were located at the common carotid artery (n=4), vertebral artery (n=1), subclavian artery (n=1) and superficial femoral artery (n=2). On the basis of acute and chronic TPA classification and different therapeutic principles, endovascular repair with ViabahnTM self-expanding covered stent was employed in 8 patients. Intraoperative angiographic findings, the size and number of the implanted stent, and the immediate angiographic results after stent implantation were recorded. All the patients were followed up to evaluate the improvement of the symptoms, the effectiveness of the repair of TPA cavity, and the occurrence of endoleak or restenosis. Results Successful implantation of ViabahnTM self-expanding covered stent was accomplished in all 8 patients, with a technical success rate of 100%. Angiography performed immediately after stent implantation showed that complete repair of TPA cavity was obtained in all patients, the distal segment of the parent artery was patent, and no endoleak was observed. The sizes of the stent used in the patients were 8×50 mm (n=2) and 9×50 mm (n=2) in common carotid artery, 6×50 mm (n=1) in vertebral artery, 11×100 mm (n=1) in subclavian artery, and 8×100 mm (n=2) in superficial femoral artery. The patients were followed up for 6-30 months (mean of 14.3 months), and the clinical symptoms disappeared in all patients. CT angiography indicated that there was no endoleak or restenosis. Conclusion Based on the different therapeutic principles, the use of ViabahnTM self-expanding covered stent in endovascular repair of peripheral TPA is technically simple and micro-invasive, and clinically feasible with reliable effect and safety. Therefore, this technique can be employed as a first-line therapy option for peripheral TPA.
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Being a new non-ceramic hydroxyapatite artificial bone substitute with biological activity , calcium phosphate cement is widely applied in clinical therapy due to its biocompatibility , osteoconductivity , degradability and possibility of being drug carriers . In addition, it also has a good performance in root canal filling , apexification, plerosis of pulp floor perforation and alveolar defects . However , it is necessary to resolve the issues , such as selecting appropriate hardening time and how to enhance compressive strength . This article presents a review of the research progress on the biological properties and clinical application of calcium phosphate cement in stomatology .
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OBJECTIVE:To observe the therapeutic effect of pagosid in treating acute gouty arthritis.METHODS:70pa-tients were randomly assigned to treatment with pagosid(treatment group)or colchicine(control group),the onset time of therapeutic effect,symptom amelioration,blood uric acid descending level and adverse drug reactions of the two groups were monitored.RESULTS:There were ameliorated clinical symptoms in both groups;however,the blood uric acid level of the treatment group were reduced,and little adverse reaction involved in this group and the onset of curative effects was slow,which stood at(65.78?30.19)hours.CONCLUSION:Treatment of acute gouty arthritis with pagosid ameliorates hyper-uricemia and mitigates pain and swelling accepted by patients better.