• 대한전기학회:학술대회논문집
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• 대한전기학회 2007년도 심포지엄 논문집 정보 및 제어부문
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• pp.52-54
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• 2007

Laser wave length can have evaporation effect by absorption because outer skin or tissue of focus is consisted of water almost though absorption of water occurs more than 90% almost in formation thickness of very thin floor. Can operate outer skin, steam by floor and correct incision of formation is available. Suture surgical operation is available to vein or lymph system and surgical operation region can dry and see as eye and radish bleeding surgical operation is available. Specially, stability of tube both end output about pulse by weight very, this research can cause various curative effect because can reduce bulk and control easily current wave style of medical laser using electric power conversion device of high frequency way. If introduce ZVS (Zero Voltage Switching) or ZVZCS (Zero Voltage and Zero Current Switching), is more profitable because can reduce switching damage. Because electric power department of proposed medical laser can do stable soft-switching in wide subordinate extent introducing ZVZCS technique by the first help and control department composes microcontroller, output current waveform user have free form make. Result that experiment because design and manufacture, brought result that improve of 20% than existing equipment, and will be bought to get into superior result if supplement as systematic late.

• 한국의료질향상학회지
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• 제27권1호
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• pp.51-57
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• 2021

As expectations for medical service have increased recently, the interest in medical quality improvement and patient safety has increased. In addition, as part of efforts to improve the training environment of the residents, the working hours of the residents are reduced which means that the medical workforce is expected to change significantly in the future. As a result, in hospital care of surgical patients, it is inevitable to change the patient care system by surgeon-residents to the new system. For this, the introduction of a surgical hospitalist system is proposed as an alternative. This article is an introduction to the process of introducing a surgical hospitalist system in a single institution and describes in detail the considerations This is the first case of the introduction of surgical hospitalist in Korea. Through this case, we intend to lay the groundwork for the successful implementation of the surgical hospitalist in Korea.

• Journal of Trauma and Injury
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• 제31권1호
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• pp.29-33
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• 2018

Traumatic blunt aortic injury especially on proximal ascending aorta is a rare injury with a few reports. Generally emergency surgical management was performed. In this case, however, in multiple trauma with brain injury, emergency surgical management of aortic injury might result in unexpected secondary injury of the brain. Herein, we report a case of a 33-year-old man who was driving a truck was injured in a head-on collision. Evaluation revealed a pseudoaneurysm on his ascending aorta concomitant with epidural hemorrhage. He was treated by surgical management of his ascending aorta after 3 days from accident. There were no postoperative and neurologic complications and the patient was discharged after 18 days.

• 대한기관식도과학회지
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• 제16권1호
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• pp.11-15
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• 2010

Minimally invasive surgery (MIS) has several advantages over conventional open surgery. Less pain, less morbidity, early recovery and better cosmetic outcomes are well-known benefits of MIS. However, indications of MIS are highly dependent on the experience of surgeon and the disease status, In the benign diseases with less surgical complexity, MIS can be performed relatively and safely. However. in advanced malignant diseases which require more complex surgical manipulation, the of patients and the principles of oncologic surgery should be considered before the selection of surgical methods, MIS would be performed more and more with aid or technologic advancement. However, long-term result with equivalent oncologic outcomes to open surgery is necessary to be one of standard surgical treatments in thoracic surgery.

• Journal of Chest Surgery
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• 제15권4호
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• pp.373-380
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• 1982

Experience with intracardiac surgery in infants indicates that for most anomalies the operation and late mortality after primary total correction is lower than the combined mortality after early palliation and delayed correction. In addition, there are secondary benefits of primary total correction in terms of reversal of retarded physical growth and social development and alleviation of parental anxiety. One hundred and fifteen infants under 2 years of age with congenital cardiac anomalies underwent primary surgical intervention at Seoul National University Hospital from Jan. `78 to Sep. `82. There were 70 patients with VSD, 17 patients with TOF, 10 patients with TGA, 4 patients with ASD, 4 patients with TA, 3 patients with TAPVR, and the remainders are Coronary AV Fistula, partial ECD+COA, SV, DORV, PA, Trilogy+PDA. The overall surgical mortality was 18.3%. In acyanotic group 6 patients died among 76 operated patients, and surgical mortality was 6.6%. But in cyanotic group, the mortality was very high as41.0% [16 patients among 39 patients]. This poor surgical result in cyanotic group was due to Improper pre-, intra- and post-operative care, and we are convincing that these factors soon be improved as experiences accumulated.

• 대한족부족관절학회지
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• 제25권2호
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• pp.80-88
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• 2021

Chronic Achilles tendon rupture is likely to result in functional impairment in gait and sports activity. The presence of a large defect secondary to retraction of the tendon ends, atrophy of the calf muscles, and vulnerable vascularity of the soft tissue envelope make it a challenging problem to treat. Surgical reconstruction aims to restore the length and tension of the gastrocnemius-soleus complex. Various surgical treatment options have been described, depending on several factors, including residual gap size after scar tissue removal, remaining tissue quality, and vascularity. Despite good results being reported, there is a lack of high-level, evidence-based clinical guidelines available to select the first-line surgical procedure. This paper overviews the current available surgical options for patients with chronic Achilles tendon rupture.

• International journal of thyroidology
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• 제11권2호
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• pp.99-108
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• 2018

Most thyroid cancers are well-differentiated cancers and have a very good prognosis. About 10% of thyroid cancer, however, invades the surrounding tissues, causing local recurrence and distant metastasis, and eventually affecting survival rate. In locally advanced thyroid cancers, the invasion of trachea, larynx and esophagus, can be occurred by primary tumor and may also result in lymph nodes metastasis. Surgical resection is still mainstay for the treatment of locally advanced thyroid cancer. The main purpose of the surgical resection is to eliminate the cancer completely, therefore, it can cause many complications such as dysfunction of the larynx, trachea and esophagus. It can have a serious effect on the quality of life, therefore there is still controversy on the extent of the surgery. The authors compare and analyze the opinions which were already discussed in the literatures published so far. These will help to select the surgical method.

• 대한족부족관절학회지
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• 제23권1호
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• pp.6-11
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• 2019

As a result of the increased participation in recreational and competitive sports activity, the incidence of chronic lateral instability has risen. Because chronic ankle instability can cause significant comorbidity and increase the social cost, the interest in this issue is growing. Although there are well-documented and effective surgical treatments for managing this condition, conservative treatments are a viable first option in selected patients. Through conservative treatment, surgical treatments can be reduced or delayed without necessarily affecting the overall outcome, but the failure of conservative treatment results in the need for surgical treatment to reduce the long term complications. Appropriate postoperative rehabilitation is essential for adequate functional recovery, even when surgical treatment is required.

• Journal of Korean Dental Science
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• 제16권2호
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• pp.211-217
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• 2023

Fibrous dysplasia (FD) accompanying osteomyelitis (OM) has been reported to result in recurrent, refractory pain and swelling. Although radical resection of the lesions has been suggested, effective surgical treatment strategies have not yet been established due to the limited number of studies on this pathological condition. In this report, we present the conservative surgical management of FD accompanying OM in two patients who exhibited recurrent signs and symptoms. The present report suggests that OM occurring in patients with FD can be successfully managed with conservative surgical treatment and following removal of the odontogenic origin although bone defect in which inflammatory fibro-osseous lesions is removed through decompression surgery may exhibit regeneration of dysplastic bone. In addition, for the prevention of OM in patients with FD, careful clinical examination and thorough management of dental-related pathologies are necessary with regular follow-up examinations to screen for the possibility of malignant changes.

• Archives of Plastic Surgery
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• 제38권6호
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• pp.903-906
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• 2011

Purpose: Accessory tragus is a fairly common congenital malformation and usually located at pretragal area. Surgical removal is a common treatment of accessory tragus irrespective of location and morphology. Most accessory tragi do not have depression site around them, but some do. So in those cases, simple surgical excision was not enough to promote the aesthetic facial appearance. For depression site remodeling, the excess amount of skin and cartilage need to be remained partially instead of total excision. This method can achieve the symmetric contour of pretragal area. The authors excised the epidermis and cartilaginous tissue totally and remained the dermis for reconstruction of the depression site around accessory tragus. The depression site is filled with dermal turnover flap. The purpose of this report is to present new idea to promote cosmetic result in treatment of accessory tragus containing the depression site. Methods: Two patients had a pair of accessory tragi at pretragal area. One was a common featured accessory tragus, but the other was different. Depression site was found around accessory tragus. After epidermis and cartilaginous tissue were removed from it, dermis component was used as turnover flap for reconstruction of depression site. Results: After accessory tragus was removed and depression site was reconstructed, facial contour and cosmetic result was achieved. Complication such as flap necrosis and wound dehiscence was not observed. Conclusion: The accessory tragus has variant morphology and degree of invasive depth. And some has a depression site around them. In those cases, simple surgical removal results in morphological distorsion and do not promote facial symmetry. The authors suggest dermal turnover flap as reconstruction method of the depression site. This method improves both surgical outcome and cosmetic result.