• The Journal of Society for e-Business Studies
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• v.19 no.4
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• pp.169-193
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• 2014

This paper attempts to analyze how the psychological factors would have an effect on the user's intention to make use of the mobile care via smart-phone, identifying the relationships among individual motivation propensity that consists of prevention propensity and promotion propensity, perceived usefulness and ease of use, perceived cost, behavioral use attitude and use intention based on technology acceptance model, and verifying them empirically through the structural equation modeling. The findings are as the followings. First, prevention motivation propensity affects positively on usefulness of smart-phone for mobile care service, but there are no significant indications that it affects on the ease of use and perceived cost. Second, promotion propensity affects positively on perceived ease of use and perceived cost of smart-phone for mobile care service, but there is no significant indication that it affects on perceived usefulness. Third, perceived usefulness and ease of use, and perceived cost affects positively on the use attitude. In sum, this paper confirms that the prevention propensity and promotion propensity might be used as antecedent variables for developing new smart-phone services of mobile care.

• Archives of Plastic Surgery
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• v.36 no.5
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• pp.583-590
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• 2009

Purpose: In the cases of a vascular compromised condition in an injured lower extremity, soft tissue coverage with free tissue transfer presents a challenging problem to the reconstructive surgeon. For this reason, cross - leg flaps are still used in unusual circumstances. Advances in surgical technique has made the cross - leg free flap possible although it may require long operation time along with significant donor site morbidity. Therefore, a pedicled cross - leg muscle flap may be an alternative treatment modality when local flap or free flap is not possible. Methods: Twelve patients(9 males and 3 females) underwent the operation between October of 2001 and December of 2008. The patients' age ranged from 6 to 82 years. The unusual defects included the regions such as the knee, popliteal fossa, distal third of the tibia, dorsal foot, and the heel. Indications for the cross - leg gastrocnemius flap are inadequate recipient vessels for free flap(in eight cases), extensive soft tissue injuries(in three cases) and free flap failure(in one case). The muscle flap was elevated from contralateral leg and transferred to the soft tissue defect on the lower leg while both legs were immobilized with two connected external fixator systems. Delay procedure was performed 2 weeks postoperatively, and detachment was done after the establishment of the adequate circulation. The average period from the initial flap surgery to detachment was 32 days (3 to 6 weeks). Mean follow - up period was 4 years. Results: Stable coverage was achieved in all twelve patients without any flap complications. Donor site had minimal scarring without any functional and cosmetic problems. No severe complications such as deep vein thrombosis or flap necrosis were noted although mild to moderate contracture of the knee and ankle joint developed due to external fixation requiring 3 to 4 weeks of physical treatment. All patients were able to walk without crutches 3 months postoperatively. Conclusion: Although pedicled cross - leg flaps may not substitute free flap surgery, it may be an alternative method of treatment when free flap is not feasible. Using this modification of the gastrocnemius flap we managed to close successfully soft tissue defects in twelve patients without using free tissue transfers.

• Journal of Chest Surgery
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• v.18 no.4
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• pp.753-758
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• 1985

Hemorrhage is an important complication after operation with cardiopulmonary bypass and sometimes necessitates a further emergency operation. Between July, 1962 and June, 1985, reoperation for hemorrhage was carried out on 81 patients [3.1%] out of a total 2634 patients who had previously undergone cardiopulmonary bypass surgery at the Department of Thoracic and Cardiovascular Surgery, Yonsei University Medical Center. There were 38 males and 43 females, with an average age of 25 years [ranging 6 months to 60 years] and an average body weight of 38 kg [ranging 5 to 77 kg].There were 43 patients of cyanotic heart disease, 32 patients of acquired valvular heart disease, 4 patients of coronary artery occlusive disease, 2 patients of ascending aorta aneurysm and annuloaortic ectasia. The average amount of blood loss in the case of cyanotic heart disease was 71.7140ml/kg, in acyanotic heart disease 45.16.3ml/kg, in acquired heart disease, 56.514.4ml/kg and in coronary artery occlusive disease, 50.618.7ml/kg during first post operative day. But there was no statistical difference [p>0.05]. The mean blood loss below 10 years old was 70.412.1 ml/kg. Those below 10 years old were believed to bleed more than any other group. But there was also no statistical difference [p>0.05]. Indications for reoperation were continued excessive blood loss [74%], cardiac tamponade or hypotension [23%] and radiological evidence of a large hematoma in the thorax and pericardium [2%]. Average bypass time was 2.10.1 hours [ranging 30 minutes to 5 hours]. The interval between operation and reoperation was as follows; less than 12 hours in 49 patients [60%], 12 to 24 hours in 20 patients [25%], 24 to 48 hours in 8 patients [10%], more than 48 hours in 4 patients [5%]. The commonest sites for bleeding were chest wall [36%], heart [34%], aorta [12%], pericardium [6%], thymus [5%] and others [6%]. But no definite source was found in ll patients [31%]. Twenty seven out of 81 patients [31%] had wound problems and 5 patients [6%] were expired. [Mean SEM]. In conclusion, in order to decrease the amount of blood loss after open heart surgery with cardiopulmonary bypass, shortening of bypass time and bleeding control at the wire suture site during chest wall closure were important. If the amount of blood loss was over 45 ml/kg or 8 m/kg/hour, reoperation should be considered as soon as possible. After operating, careful wound dressings were applied to prevent wound problems.

• Journal of Yeungnam Medical Science
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• v.23 no.1
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• pp.45-51
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• 2006

Background: This study was conducted to evaluate the usefulness of capsule endoscopy (CE) for the diagnosis of small bowel diseases. Materials and Methods: We reviewed the medical records of 66 patients (mean age: 52.1 years, male/female: 39/27), who underwent CE at Yeungnam University Hospital from August 2003 to March 2006. Results: Suspicious gastrointestinal (GI) bleeding presenting as anemia or history of gross bleeding was the most common reason to perform CE (71.2%). Other indications included GI symptoms (21.2%) such as abdominal pain/discomfort, nausea, diarrhea, and others (7.6%). In studies performed for GI bleeding (n=47), ulcer/erosion was the most common finding (n=22, 46.8%) followed by tumor (n=5, 10.6%), angiodysplasia (n=3, 6.4%), polyp (n=3, 6.4%), active bleeding (n=1, 2.1 %), ulcer with stenosis (n=1, 2.1%), and normal findings (n=12, 25.5%). Of these, a bleeding focus was detected in 32 cases (68.1%) undergoing CE studies. Among 14 patients with GI symptoms, only two patients had typical findings related with symptoms. Surgical resection was performed in five cases with tumor. Of these, four were diagnosed as gastrointestinal stromal tumor and the other one was a lymphangioma. There were no complications associated with the CE procedure. Conclusion: Capsule endoscopy is a safe, noninvasive diagnostic tool for small bowel diseases and may be useful for the diagnosis of small bowel hemorrhage including obscure bleeding. However, further studies are needed to confirm its utility for abdominal symptoms other than hemorrhage because of the low diagnostic yield.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• v.48 no.5
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• pp.303-308
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• 2022

Objectives: Selection of treatment methods for mandibular condylar fractures remains controversial. In this study, we investigated treatment methods for condylar fractures to determine the indications for open or closed reduction. Patients and Methods: Patients >12 years of age treated for mandibular condylar fractures with a follow-up period of ≥3 months were included in this study. The medical records of enrolled patients were reviewed for sex, age, fracture site, treatment method (open or closed reconstruction), postoperative intermaxillary fixation period, operation time, and complications. Radiological analysis of fracture fragment displacement and changes in ramal height difference was performed using computed tomography and panoramic radiography. Results: A total of 198 patients was investigated, 48.0% (n=95) of whom underwent closed reduction and 52.0% (n=103) underwent open reduction. There was no significant correlation between reduction method and patient sex, age, or follow-up period. No statistically significant difference between the incidence of complications and treatment method was observed. None of the patients underwent open reduction of condylar head fracture. Binary logistic regression analysis showed that open reduction was significantly more frequent in patients with subcondylar fracture compared to in those with a fracture in the condylar head area. There was no statistically significant correlation between the groups and fracture fragment displacement. However, there was a significant difference between the treatment groups in amount of change in ramal height difference between the fractured and the non-fractured sides during treatment. Conclusion: No significant clinical differences were found between the open and closed reduction methods in patients with mandibular condylar fractures. According to fracture site, closed reduction was preferred for condyle head fractures. There was no significant relationship between fracture fragment displacement and treatment method.

• Korean Journal of Acupuncture
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• v.40 no.3
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• pp.79-89
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• 2023

Objectives : The purpose of this study is to investigate various application methods of focused ultrasound and apply them to clinical use in Korean medicine. Methods : Search was performed using the search engines of electronic databases, including PubMed, ScienceDirect, Cumulative Index to Nursing and Allied Health Literature (CINAHL), ScienceON, Oriental Medicine Advanced Searching Integrated System (OASIS), China National Knowledge Infrastructure (CNKI), Wanfang Data, Japan Science Technology Information Aggregator, Electronic (J-STAGE) and Citation Information by NII (CiNii), from inception to July 2023 without language limitation. Inclusion criteria were clinical studies including randomized controlled trials (RCTs), and animal experimental studies related with focused ultrasound treatments for acupoints or meridian sinews. Results : Total 17 papers, 7 for RCT, 6 for in vivo animal studies, and other experimental studies, were finally selected. Indications used in studies were shoulder pain, back pain, chronic back pain, and degenerative knee arthritis. In experimental studies, studies on animal models of hypoxic ischemic brain damage and hyperlipidemia were also conducted. As for the acupoints, LR3, LI4, and ST36 were used in clinical studies and, in animal experimental studies, GV20, KI1, and ST36 were used. As for the dose, 4 studies below 3 W/cm² and 3 studies in the range of 0.625 to 5 W/cm² in clinical studies, and all studies did not exceed 5 W/cm². In animal experimental studies, 0.5 W/cm², 2 W/cm², 7.5 WW/cm², 15 W/cm², 10~20 W/cm² were used. In all three studies describing the penetration depth during irradiation, it was less than 1 cm. Conclusions : We suggest that focused ultrasound is an appropriate treatment tool for stimulating the acupoints to transfer heat energy. Future studies with rigorous and well-designed RCTs for various diseases will be required to ascertain the focused ultrasound stimulate acupoints or meridian sinews.

• The Korean Journal of Archival Studies
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• no.77
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• pp.37-74
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• 2023

As the Yoon Seok-yeol administration enters its second year in office, it is beginning to vigorously promote policies related to the "digital platform government," which is the 11th of the 120 national tasks. Accordingly, the Digital Platform Government Committee established and reported the 'Digital Platform Government Realization Plan' to the President in April 2023, and the 「Act on Provision and Use of Public Data」 and 「Data An amendment to the Act on the Vitalization of Infrastructure Administration" was submitted to the National Assembly in June 2023. In addition, the 「Regulations on the Promotion of Administrative Efficiency and Collaboration」, which is a Presidential Decree, was revised to 「Regulations on Operation and Innovation of Administrative Affairs」, including the name change, to effectively promote innovation in administrative work, and was completed on June 27, 2023. Therefore, this study aims to examine the trends of public institutions related to the digital platform government as a government task, and discuss whether the recent trends will affect the management of institutional records. Indications to respond to the government's digital platform, which is leading the way, it was emphasized that the operation of the current Medical Records Act is strange.

• Clinical and Experimental Reproductive Medicine
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• v.24 no.2
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• pp.211-216
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• 1997

The present study was carried out to evaluate whether the coculture system of human embryos with Vero cells can improve the quality of embryo or overcome the repetitive implantation failures in order to obtain pregnancy. From January to December 1996, a total 202 cases which patients with the problems of repetitive implantation failures (group I) or those with the poor embryonic quality in their previous cycles (group II) was analysed. The quality of cocultured embryo, pregnancy, on-going and implantation rates between coculture and control groups were compared. Of 93 cases in group I, coculture was performed in 34 cases and conventional IVF for the rest. Of 109 cases in group II, 36 for coculture and 73 for conventional IVF. In group I, pregnancy, on-going and implantation rates in coculture group (14/34 (41.2%), 9/34 (26.5%), 16/81 (19.8%), respectively) were higher than those of control (11/59 (18.6%), 8/59 (13.6%), 12/152 (7.9%), respectively). There is significance in the pregnancy and implantation rates (p=0.028 and p=0.015). In group II, pregnancy, on-going and implantation rates in coculture group (8/36 (22.2%), 5/36 (13.9%), 8/87 (9.2%), respectively) were higher than those of control (5/73 (6.8%), 3/73 (4.1%), 3/158 (1.9%), respectively). Like the result of group I, there is significance in the pregnancy and implantation rates (p=0.028 and p=0.022). Coculture system with Vero cells works well in the groups of the two indications. Although the case of 3 day-coculture was small as 15 cases in group II, 3 day-coculture improved pregnancy rate (4/15 (26.7%)). Therefore, 3 day-coculture with assisted hatching is recommended to the patients with poor embryonic quality. In conclusion, coculture system with Vero cells can be suggested as an effective method which improves pregnancy rate in those who have repetitive implantation failures or whose embryonic quality was poor in their previous cycles.

• Journal of Gastric Cancer
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• v.10 no.1
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• pp.13-18
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• 2010

Purpose: Omental infarction (OI) following laparoscopy-assisted gastrectomy (LAG) for gastric cancer could become more common in the future because the indications for LAG are expected to expand. The aim of this study was to determine the clinical characteristics of OI following LAG. Materials and Methods: Three hundred ninety patients who underwent LAG for T1 or T2 gastric cancer from April 2003 to November 2007 were enrolled. OI was diagnosed by two radiologists using the patients' abdominal 16 row-detector CT scans. The clinicopathologic characteristics were retrospectively evaluated in the omental infarction (OI) group and the non-omental infarction (non-OI) group using the gastric cancer database of Dong-A University Medical Center and the medical record. Results: Nine omental infarctions (2.3%) of 390 LAGs were diagnosed. All the OIs could be discriminated from omental metastasis on the initial or follow up CT images. The location of the omental infarctions was on the epigastrium in 3 patients and in the left upper quadrant in 3 patients. The mean size of the OIs was 4.1 cm. Most patients with OI had no signs or symptoms. The body mass index of the OI group was higher than that of the non-OI group (P=0230), and OI was more common in patients who underwent total gastrectomy than in the patients who underwent subtotal gastrectomy (P=0.0011). Conclusion: Laparoscopy-assisted gastrectomy (LAG) with partial omentectomy for gastric cancer can be a cause of secondary OI. Omental infarction after LAG has different clinical characteristics and CT findings that those of other omental infarctions or postoperative omental metastases. Further multicenter study will be needed to evaluate in detail the clinical features of omental infarction after LAG.

• Journal of Chest Surgery
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• v.38 no.8 s.253
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• pp.523-528
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• 2005

Background: Investigation of the change of ventricular function and mitral regurgitation after surgical repair of patient with anomalous origin of left coronary artery from the pulmonary artery (ALCAPA) is key issue for the better surgical outcome. Material and Method: From April 1986 to July 2002, 12 patients presented with ALCAPA. The median age at repair was 4 months. Surgical methods included left coronary artery transfer to the aorta (10), Takeuchi procedure (1), saphenous vein free graft bypass (1). Mitral valve was repaired in 1. Result: There were 2 hospital death $(16.7\%)$. The mean follow-up period was $7.1\pm4.1$ years (range, 7 months to 13 years). Four patients required postoperative circulatory assist for $2.2\pm1.1$ days and one needed left ventricular assist device (LVAD) for 1day. Postoperative echocardiography demonstrated significant improvements in mean fractional shortening $(33.4\pm9.1\%\;vs\;17.7\pm9.6\%,\;n=10,\;p<0.05);$ left ventricular end diastolic dimension $(33.4\pm7.3\;mm\;vs\;44.8\pm7.0\;mm,\;n=10,\;p<0.05)$ and systolic dimension $(22.2\pm7.5\;mm\;vs\;33.4\pm7.9\;mm,\;n=10,\;p<0.05)$. Severities of mitral regurgitation decreased in all survivors at 1st and 4th year follow-up echocardiography. There were 2 reoperation due to residual MR and right ventricular outflow obstruction (Takeuchi case). Conclusion: Anatomic repair of anomalous left coronary artery from the pulmonary artery offered an excellent surgical results, especially in terms of the recovery of left ventricle function and mitral regurgitation. However, preoperative indications for mitral procedure is to be evaluated.