• Journal of the Korean Society of Radiology
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• v.16 no.4
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• pp.427-434
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• 2022

Atrial fibrillation treatment includes 3D RFCA and Cryo-balloon ablation. Both procedures have in common that they enter after understanding the structure of the heart using angiography equipment. Therefore, there is a disadvantage that the effect of exposure according to the procedure time can be a threat to both the patient and the operator, so this study aims to confirm the relationship between the total ablation time and the effect of radiation exposure. We used follow-up data (retrospective) from 41 patients who underwent coronary angiography and arrhythmia at the same time from March 2019 to July 2022. The range for total ablation time was based on the recorded data from the start to the end of the total ablation. The end point of 3D RFCA was when the ablation was completed for 4 pulmonary veins, and in the case of Cryo-balloon ablation, the data that succeeded in electrical insulation were included. As a result of analyzing the total ablation time, the time taken for Cryo-balloon ablation was 1037.29±103.66 s, which was 2448.61 s faster than 3D RFCA using 3485.9±405.71 s, and was statistically significant. (p<0.05) As a result of analyzing the total fluoroscopy time, the exposure time for 3D RFCA was 2573.75±239.08 s, which was less by 1717.15 s than the exposure time for Cryo-balloon ablation, 4290.9±420.42 s, and was statistically significant. In the case of total area dose product, 3D RFCA was 59.04±13.1 uGy/m², which was lower than Cryo-balloon ablation 980.6±658.07 uGy/m² by 921.56 uGy/m², which was statistically significant. As the insulation time of the Cryo-balloon ablation is shorter than that of the 3D RFCA, the method using the Cryo-balloon ablation is considered to be effective when the patient's condition is not good and a quick procedure is required. However, in patients with permanent Atrial fibrillation, there is a high probability of structural changes in the heart, so it is considered that 3D RFCA is better than Cryo-balloon ablation, which is difficult to manipulate.

• Journal of Chest Surgery
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• v.38 no.3 s.248
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• pp.229-232
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• 2005

Lumbar Sympathectomy is a surgery for plantar hyperhidrosis, vascular and other reflex sympathetic diseases and has a various indications and physiologic effects. However it is not performed actively compared to thoracic sympathectomy because of its invasiveness. Therefore, we tried to perform lumbar sympathectomy using mediastinoscopy with small incision and introduce this new surgical technique. Material and Method: From July 2003 to December 2004, 18 patients undewent lumbar sympathectomy with mediastinoscopy at Inje University Sanggye Paik Hospital. There were 12 males and 6 females whose mean age was 24.3$\pm$8.2 years ranging from 18 to 67 30 cases of lumbar sympathectomy was performed with mediastinoscopy of which 24 cases were for plantar hyperhidrosis and 6 cases for other diseases. Result: Mean operation time was 37.2$\pm$12.5 minutes and mean post operation hospital stay was 3.1$\pm$2.2 days. There was one post sympathetic neuralgia and one peritoneal opening. Conclusion: Lumbar sympathectomy using mediastinoscopy is a simple and effective technique and has the advantage of cosmetics, post operative pain and hospital stay. However, further studies with large number of cases should be carried out for better outcome.

• Journal of Veterinary Clinics
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• v.30 no.3
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• pp.166-171
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• 2013

This study was conducted to evaluate the clinical relevance and effectiveness of ovariectomy (OVE) and ovariohysterectomy (OVH) in terms of postoperative pain behavior and surgical stress. Thirteen healthy intact mongrel purpose-bred female dogs were used in this study. OVE was performed in six dogs whereas OVH was performed in seven dogs. Prior to, 1, 2, 4, 6, 12, and 24 h after surgery, pain assessment was performed by using the Short form of Composite Measure Pain Scale (CMPS-SF) and blood analysis for the determination of glucose, creatine kinase (CK), and cortisol were done. Also, surgical time, duration of anesthesia, and incision length were compared between two groups. As a result, OVH group as opposed to OVE group showed significantly longer in surgical time, duration of anesthesia, and incision length. Also, based on the two-way ANOVA test, the CMPS-SF had significant differences (p < 0.05) between two groups, with the OVE dogs having lower values at 1, 2, 4, and 6 h postoperatively. In addition, in terms of CK, the value at 1, 2, 4, 6, and 12 h were significantly (p < 0.05) increased from the baseline value for the OVH group. However, as for CK in OVE group, the values at 4, 6, and 12 h were significantly increased from the baseline value. As for blood glucose, a significant (p < 0.05) increase from the baseline was shown at 1 h postoperatively in OVH group and no significant increase was shown in OVE group. In terms of serum cortisol level, the values at the 1 and 2 h were significantly (p < 0.05) increased from the baseline value for both groups. In conclusion, our study has shown that OVE can be considered as a superior choice in terms of sterilization technique in female dogs, considering shorter incision length, surgical time, duration of anesthesia along with lower pain and surgical stress response than OVH.

• The Journal of the Korean bone and joint tumor society
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• v.14 no.2
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• pp.119-124
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• 2008

Purpose: To present our experience with soft tissue reconstruction using anterolateral thigh free flap after resection of soft tissue sarcoma. Materials and Methods: Between January of 2003 and June of 2007, we treated 7 patients with soft tissue reconstruction using anterolateral thigh free flap after wide resection for soft tissue sarcoma. We retrospectively analyzed type and size of tumors, resection margin, size of defect after resection, time of operation, flap survival and complication. Results: The type of sarcoma was 3 synovial sarcoma, 2 malignant fibrous histiocytoma, 1 leimyosarcoma and 1 fibrosarcoma. The size of tumor varied from $3{\times}5\;cm$ to $7{\times}8\;cm$. The resection margins of tumors were negative in all cases. The size of soft tissue defect after resection varied from $6{\times}8\;cm$ to $15{\times}10\;cm$. The mean time of operation was 3.6 hours. All flaps were survived. Conclusion: Anterolateral thigh free flap appear to be ideal for reconstruction after wide resection of soft tissue sarcoma.

• Journal of Korean Orthopaedic Sports Medicine
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• v.11 no.1
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• pp.30-36
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• 2012

Purpose: We compared the clinical and radiological results of meniscectomy with HTO or without HTO for degenerative medial meniscus posterior horn with varus deformity. Materials and Methods: Forty-two patients who had medial meniscus degenerative root tear with varus deformity more than 3 degrees were included for this study. Among them, 30 patients were performed meniscectomy combined with open wedge HTO and 12 patients were performed only meniscectomy without HTO. The mean follow-up period was 52.5 months. The clinical results were evaluated based on symptom improvement, patients' subjective satisfaction for surgery and HSS score. We also compared the osteoarthritic progression between the group on preoperative and at the final follow up radiographs. Results: Symptom improvement was achieved in 83.3% (25 cases) with HTO group and 66.7% (8 cases) without HTO group at final follow up with a significant difference. Patients' satisfaction was achieved in 83.3% (25 cases) with HTO group and 58.3% (7 cases) without HTO group which has a significant difference. The HSS score was improved in both group (90.8: with HTO group, 89.0: without HTO group) at the final follow up without significant difference. WOMAC score was improved in both groups at the final follow up without significant difference. There were no significant differences in the osteoarthritic progression between two groups. Conclusion: The good clinical result for treatment of patient who have medial meniscus degenerative root tear with varus deformity, proximal high tibial osteotomy is considered absolutely necessary. However, the progression of degenerative arthritis, its effect on long term follow up will be needed.

• Journal of Chest Surgery
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• v.31 no.4
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• pp.388-392
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• 1998

Hyperhidrosis is one of abnormalities in autonomic nervous system, it has been treated with dermatologic principles or thoracic sympathectomy via thoracotomy. But these techniques were rather ineffective or invasive. Recently, Video Assisted Thoracoscopic Surgery(VATS) is widely applided in thoracic surgical area, and palmar & axillary hyperhidrosis is not the exception. From August 1995 to February 1997, 52 patients with bilateral palmar hyperhidrosis underwent bilateral thoracic sympathectomy with VATS in the department of thoracic & cardiovascular surgery, Inje university, Pusan Paik Hospital. There were 27 men and 25 women and the mean age was 22 years. Mean operating time was 172 min and unilateral sympathectomy via minithoracotomy was applied in one patient due to severe pleural adhesion. Mean postoperative hospital stay was 2.6 days. During mean 12.5 months follow-up, there was no recurrence of sweating in the both hands. Thirty patients(57.7%) complained moderate degree of compensatory sweating, but the discomfort was decreased in severity. 83.8% of all patients were satisfied with the result of operation.

• Proceedings of the KOR-BRONCHOESO Conference
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• 2003.09a
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• pp.111-111
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• 2003

부식제 섭취로 인한 가장 흔한 합병증은 인두-식도 협착이며, 이로 인한 구강섭취 장애는 심각한 문제를 초래한다 이의 치료에 있어 기존의 수술적 치료가 소개되었으나 만족스럽지 못한 결과를 가져왔다. 부식제 섭취로 인한 인두-식도 협착에 있어 본원에서 시행한 수술적 치료 결과에 대해 알아봄으로써 향후 인두-식도 협착 치료에 도움을 주고자 하였다. 2001년 12월부터 2003년 8월까지 본원 이비인후과와 일반외과에서 부식제 섭취로 인한 인후두 및 식도의 완전협착으로 진단 받고 치료를 시행 받은 4예를 대상으로 의무기록을 통하여 술전 이학적 소견, 수술적 치료방법, 술후 합병증, 구강 섭취 시기를 후향적으로 분석하였다. 모든 환자에서 술전 내시경 검사로 인두-식도 접합부에 협착소견을 확인하였으며, 이중 경구 식이가 전혀 가능하지 못하였던 3명의 환자는 전후두인두식도 절제술 및 대장대체술 시행 하였으며, Levine- tube로 관급식이가 가능하였던 1명의 환자는 내시경적 확장술만 시행 받았다. 전 후두인두식도 절제술 및 대장대체술을 시행받은 3명의 환자 모두에서 문합부 유루, 출혈은 없었으나, 그 중 1명에서 술후 재협착으로 내시경적 확장술을 시행 받았고 이 환자를 제외한 2명의 환자에서 술후 10일과 13일에 경구섭취가 가능하였고 재협착이 있었던 환자는 술후 43일에 경구섭취가 가능하였다. 대장대체술을 시행 받았던 환자에서는 연식 이상의 식사가 가능하였으나, 내시경적 확장술을 시행 받은 환자는 관급식이만 가능하였다. 부식제 섭취에 인한 인후두 및 식도 협착에 있어 대장을 이용한 대장 대체술식을 이용하여 인두-식도 협착 치료에 좋은 결과를 얻었으며, 대장대체술은 합병증 및 구강 섭취에 있어 좋은 결과를 가져다 주는 술식으로 판단되었다.결과를 이용하여 향후 전개될 홈 네트워크 서비스 및 관련시장의 발전 방향을 전망해 보고 이에 따른 기업이나 정부차원의 대응전략을 파악하고자 한다.육구에서는 큰 변화를 나타내고 있지 않았다(p<0.05). 운동과 비운동시킨 참돔의 지질 함량의 변화는 운동시킨 참돔은 운동으로 인한 에너지 소비로 인하여 함량이 유의적으로 감소했으며(r=-0.35), 비운동사육구에서는 절식으로 인하여 지질함량이 감소하였다(r=-0.38). 파괴강도와 가장 밀접한 영향을 가지는 콜라겐은 운동과 비운동 모두 사육기간동안 큰 변화는 보이지 않았다. 초기의 파괴강도값은 1.45±0.02kg(운동사육구), 1.36±0.18kg(비운동사육구)이였으며 사육기간동안 운동사육구는 파괴강도값이 증가한 반면, 비운동수조에서는 참돔의 파괴강도는 사육기간동안 큰 유의차가 없었다. 각 성분간의 상관도를 살펴보면, 수분함량과 파괴강도는 상관성을 가졌으며, 지질함량과 파괴강도도 같은 경향은 나타내었다. 운동기간동안의 파괴강도와 콜라겐 사이에는 상관성의 거의 없었다. 이는 운동기간에 따른 파괴강도의 증가가 콜라겐의 함량의 증가보다는 지질함량의 감소와 수분함량의 증가와 같은 성분과의 상관성이 크다고 판단된다. 다음으로는, 운동횟수에 의한 영향으로써 운동시간을 1일 6시간으로 설정하여, 운동횟수를 결정하기 위하여 오전, 오후에 각 3시간씩 운동시키는 방법과 오전부터 6시간동안 운동시키는 두 방법을 이용하여 품질을 비교하였다. 각 조건에 따라 운동시킨 참돔의 수분함량을 나타낸 것으로, 2회(오전 3시간, 오후 3시간)에 나누어서 운동시키기 위한 육의 수분함량은 73.37±2.02%를 나타냈으며, 1회(6시간 운동)운동시키기 위한 육은 71.74±1.66%을 나타내었다. 각각의 운동조건에서 양식된 참돔은

• Journal of Gastric Cancer
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• v.8 no.2
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• pp.79-84
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• 2008

Purpose: With advancements in laparoscopic surgery, there have been efforts to expand the indication for laparoscopic surgery up to advanced gastric cancer. However, scant data are available regarding the feasibility and advantages of laparoscopy-assisted distal gastrectomy (LADG) with standard radical D2 lymph node dissection. Materials and Methods: Twenty-two patients who were preoperatively diagnosed with cT1N0M0 gastric cancer underwent LADG with standard D2 lymphadenectomy between February and August 2007. They were compared with patients who underwent conventional open D2 lymphadenectomy with respect to clinicopathologic features, surgical outcomes, and postoperative course. Results: The mean operative time was significantly longer in the LADG group than in the open group ($160{\pm}25min$ vs. $135{\pm}21min$, P<0.001). However, surgical outcomes, such as surgical margin and number of retrieved lymph nodes ($25.7{\pm}11.1$ vs. $26.9{\pm}9.2$, P=ns) were comparable between the groups. The LADG group exhibited quicker postoperative recovery, and both groups exhibited similar postoperative morbidity and mortality. Conclusion: LADG with D2 lymphadenectomy is feasible and safe, with short-term surgical outcomes comparable to those seen in open D2 lymphadenectomy. Further prospective clinical investigation will be needed to better evaluate the advantages of LADG with D2 lymphadenectomy.

• Journal of Chest Surgery
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• v.32 no.12
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• pp.1106-1110
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• 1999

배경: 다한증의 치료에 있어서 흉강경을 이용한 교감신경절제술의 시술 빈도가 급증하고 있다. 그러나 액와부 다한증의 경우 수장부나 안면 두부다한증에 비하여 절제범위가 광범위하여 이에 따른 보상성 다한증 및 기타 합병증의 발생의 높고 액취증이 동반되어있는 경우 장기적인 만족도가 낮아서 크게 각광 받지 못해왔다. 대상 및 방법: 본 교실에서는 1997년 3월부터 1999년 4월까지 45례의 액와부 다한증 환자에서 2 mm 흉강내시경을 이용하여 흉부교감신경절제술 또는 잘단술을 시행하였다. 남자 28례 여자 17례로 평균연령은 28(13-46세) 였고 평균추적기간은 10개월(1-24)이었다. 24례가 액와부에만 국한된 과도발한을 호소 하였고 2례에서 수술 전 심한 액취증이 동반되어있었다. 21례의 T3,4 교감신경절제술, 20례의 T2,4 교감신경단술 그리고 4례의 T4 교감신경절제수을 시행하여 즉각적인 증상치유효과 보상성 다한증 및 장기적 만족도를 비교 분석하였다. 중등도 이상의 흉막유착으로 5mm 내시경이 필요했던 2례을 제외한 전 환자에서 2mm 트로카 2개를 사용하여 수술을 하였다 결과: 평균수술시간은 T3,4 교감신경절제술이 46.2$\pm$11분 T2, 4 교감신경절단술이 32.5$\pm$23분 T4 교감신경절제술이 53.8$\pm$18분이 소요되었고 수술직후의 효과는 T3,4 교감신경절제술과 T2,4 교감신경절단술에서 '전혀땀이 나지 않는다'가 17례(81%) 와 12례(60%) '수술전보다 감소했으나 약간땀이 난다'가 4례(19%) 와 8례(40%) 로 모든 환자에서 효과가 있었으나 T4 교감신경절제술은 4례중3례(75%)에서 전혀 효과가 없었다. 보상성 다한증은 T3,4교감신경절제술과 T2,4 교감신경절단술에서 각각 67%, 60%로 나타났고 생활에 불편을 줄 정도의 심한경우는 10% 5%에 불과했으며 장기적인 만족도는 T3,4 교감신경절제술이 86% T2,4 교감신경절단술이 89%로 나타나 높은 성공률을 보았다 결론 : 액와부다한증의 치료에 있어서 T3,4 교감신경절제술과 T2,4교감신경절단술은 증상치유효과가 높고 절제범위의 제한에 따른 보상성 다한증의 감소로 장기적 만족도가 우수한 효과적인 방법이다. 액취증이 동반된 경우 이에대한 충분한사전 설명과 원인 감별후 적절한 보조요법을 병행함으로써 환자의 만족도를 높힐수 있다고 본다.

• Journal of Chest Surgery
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• v.43 no.1
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• pp.33-38
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• 2010

Background: The use of video-assisted thoracic surgery (VATS) to perform major pulmonary resection with systematic node dissection (SND) for lung cancer by is commonly used in clinics. However, the feasibility of SND by VATS remains controversial. Video-assisted mediastinal lymphadenectomy (VAMLA) increases the quality of mediastinal lymph node staging in lung cancer. The video-mediastinoscope allows systematic lymphadenectomy by bimanual preparation. This study was conducted to assess safety and usefulness and clinical feasibility of VAMLA expanding Linder-Dahan mediastinoscope with VATS lobectomy for left sided lung cancer. Material and Method: Between February 2004 to April 2008, a total 50 patients who underwent VATS lobectomy for left sided lung cancer were analyzed retrospectively. Thirty patients (group A) underwent VAMLA followed by VATS lymphadenectomy and 20 patients (group B) underwent VATS lymphadenectomy for SND. Result: There were no statistical differences in operation times, chest tube indwelling times, or hospital days between the 2 groups. The number of dissected total nodes (p=0.001) and N2 nodes (p=0.013) were higher in group A than in group B, but there was no difference in N1 nodes. Postoperative complications included 2 prolonged air leakages (${\geq}$10 days) in each group, one pneumonia in group A, and one vocal cord palsy in group B. There were no early operative mortalities. Conclusion: Mediastinal staging of resectable lung cancer is performed by VAMLA. This new technique is the basis for VATS lobectomy particularly for left-sided lung cancer, because a higher percentage of mediastinal lymph nodes undergo complete resection using VAMLA.