• Journal of Chest Surgery
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• v.41 no.5
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• pp.598-604
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• 2008

Background: The improvements in endoscopic equipment and surgical robots has encouraged the performance of minimally invasive cardiac operations. Yet only a few Korean studies have compared this procedure with the sternotomy approach. Material and Method: Between December 2005 and July 2007, 48 patients (group A) underwent minimally invasive cardiac surgery with AESOP through a small right thoracotomy. During the same period, 50 patients (group B) underwent conventional surgery. We compared the operative time, the operative results, the post-operative pain and the recovery of both groups. Result: There was no hospital mortality and there were no significant differences in the incidence of operative complications between the two groups. The operative $(292.7{\pm}61.7\;and\;264.0{\pm}47.9min$, respectively; p=0.01) and CPB times ($128.4{\pm}37.6\;and\;101.7{\pm}32.5min$, respectively; <0.01) were longer for group A, whereas there was no difference between the aortic cross clamp times ($82.1{\pm}35.0\;and\;87.8{\pm}113.5min$, respectively; p=0.74) and ventilator times ($18.0{\pm}18.4\;and\;19.7{\pm}9.7$ hr, respectively; p=0.57) between the groups. The stay on the ICU $(53.2{\pm}40.2\;and\;72.8{\pm}42.1hr$, respectively; p=0.02) and the hospitalization time ($9.7{\pm}7.2\;and\;14.8{\pm}11.9days$, respectively; p=0.01) were shorter for group A. The Patients in group B had more transfusions, but the difference was not significant. For the overall operative intervals, which ranged from one to four weeks, the pair score was significantly lower for the patients of group A than for the patients of group B. In terms of the postoperative activities, which were measured by the Duke Activity Scale questionnaire, the functional status score was clearly higher for group A compared to group B. The analysis showed no difference in the severity of either post-repair of mitral ($0.7{\pm}1.0\;and\;0.9{\pm}0.9$, respectively; p=0.60) and tricuspid regurgitation ($1.0{\pm}0.9\;and\;1.1{\pm}1.0$, respectively; p=0.89). In both groups, there were no valve related complications, except for one patient with paravalvular leakage in each group. Conclusion: These results show that compared with the median sternotomy patients, the patients who underwent minimally invasive surgery enjoyed significant postoperative advantages such as less pain, a more rapid return to full activity, improved cosmetics and a reduced hospital stay. The minimally invasive surgery can be done with similar clinical safety compared to the conventional surgery that's done through a median sternotomy.

• Journal of Chest Surgery
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• v.39 no.10 s.267
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• pp.765-769
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• 2006

Background: Nuss procedure is a minimally invasive technique for correcting the pectus excavatum. But there are some limitations of correcting the complex anomaly or grown-up patients. Material and Method: we retrospectively reviewed 135 consecutive patients who underwent repair of pectus excavatum by the Nuss procedure and its modifications between November 1999 and December 2004. We analyzed the computed tomography, age on operation, operative technique, and complications. Result: We operated 135 patients of pectus excavatum during 62 months. Total number of operations about Nuss procedure is 216, including bar removal procedure of 64 cases, redo Nuss procedures of 47 cases. We modified the point of bar insertion to the hinge point, made a shoulder in the bar to prevent a displacement. And then we changed the fixation material from Vicryl to steel wire. If the patients are old, we retract the sternum during bar rotation and fixation. Until 2002, the number of redo Nuss operations were 17, complications were 23. but, after modifications, the number of redo Nuss operation were 0, complications were 2. Conclusion: This result indicates that our modifications of Nuss operation is effective, and could decrease the number of redo Nuss operation and complications.

• Journal of Chest Surgery
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• v.34 no.6
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• pp.472-476
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• 2001

Background: Minimally invasive surgery of pectus excavatum by Dr. Nuss is a new technique that allows the repair of this deformity without any cartilage resection or sternal osteotomy We describe the early experiences with Nuss procedure. Material and Method: From December 1999 to January 2001, twenty patients with pectus excavatum underwent repair by Nuss procedure There were 14 males and 6 females whose mean age was 10.1$\pm$7.7 years, ranging from 1 to 33 years. Most patients(N=19) were below 20 years, except 33 years old female patient(N=1). Result: The severity of depression was assessed by computed topography(CT). CT index was mean 4.9$\pm$5.7(ranged from 3.3 to 8). The average operating time was 85.8$\pm$23.7 minutes. The used metal bars were ranged in length from 8 inches to 16 inches(average 11.8$\pm$14.4 inches). Early postoperative complications were pneumothorax in three patients, paralytic ileus in one, and postoperative chest pain requiring analgesics in all patients. Epidural analgesia was used in one adult patient for control of postoperative pain. In our experiences, there were no serious complications posteoperatively. Conclusion: There were good early results with the Nuss procedure that we performed for repairing of pectus excavatum. However, we believe the procedure needs to be observed for the long term results for it to be broadly accepted.

• Journal of Chest Surgery
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• v.32 no.3
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• pp.330-332
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• 1999

A 40-year-old woman underwent plication by video-assisted thoracoscopy for left diaphragmatic eventration. Normalization in the position of the left diaphragm and a marked improvement in the left lung expansion were identified on the chest X-ray. This technique offers the patients many advantages of the minimally invasive operation.

• Journal of Chest Surgery
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• v.33 no.11
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• pp.898-903
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• 2000

배경 및 목적: 최근 비디오 흉강경술은 최소 침습적인 수술 방법으로서 자연 기흉의 일반적 치료법으로 인정되고 있으나 비교적 높은 재발율과 비용-효용 관계에 대해서는 논란이 있다. 비디오 흉강경을 이용한 기포 절제술 후의 재발율은 평균 5-10%정도로 보고되고 있으며 이는 개흉술에 비해 상당히 높은 것이다. 또한 국내 의료 실정에서의 개흉술과 비디오 흉강경술의 비용효용에 대한 비교 통계는 없는 상황이다. 대상 및 방법: 1997년 1월부터 1999년 7월까지 일차성 자연기흉으로 성균관 의대 강북삼성병원 흉부외과에서 수술을 시행한 173예를 대상으로 후향적 조사하였다. 비디오 흉강경술로 시행한 104예와 개흉술로 시행한 69예를 양군으로 나누어 성별 및 연령, 발병부위, 수술의 적응증, 수술시간, 술 후 흉관 삽입기간 및 재원 일수, 술후 합병증, 재발율, 수술 경비 및 총치료경비 등을 비교하였다. 결과: 양군의 성별, 연령, 발병부위 등에는 차이가 없었다. 수술 시간은 흉강경군이 73.1$\pm$29.5분, 개흉군이 141$\pm$52분이었다.(p<0.05). 술 후 평균 흉관의 거치기간 및 재원일수는 흉강경군이 각각 3.93일 및 7.5일, 개흉군이 7.0일 및 13.4일이었다.(P<0.05, P<0.05). 술 후 재발한 경우가 비디오 흉강경군에서 6예(5.6%), 개흉군에서 1예(1.4%) 있었다(P<0.05). 본원에서 시행한 비디오 흉강경술과 개흉술의 비교에서 수술로 발생하는 비용은 비디오 흉강경군이 유의하게 높았으나 (1,202,192$\pm$178,992원, 1,005,669$\pm$311,531원; P<0.05) 총 치료비의 비교에서는 유의한 차이가 없었다.(1,946,110$\pm$487,440원, 1,793,912$\pm$308,079원; P=0.18). 결론: 비용 효용관계 및 재발율은 병원마다의 수술 수기 및 퇴원 정책등에 따라서 다소간의 차이가 있을 수 있으나 본원의 조사 결과에서는 비디오 흉강경술이 개흉술에 비해 비용-효과가 있다고 볼 수 없으며 재발율도 높았다.

• Journal of Chest Surgery
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• v.37 no.10
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• pp.827-832
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• 2004

Background: The significance of MIDCAB is emerging topics recently as OPCAB is going to be universalized, and long-term outcome of bypass graft surgery was proved to be more excellent than balloon dilation or stent insertion. We report our MIDCAB results in 73 patients in the last three years. Material and Method: Retrospective analysis of medical records was done from November 1, 2000 through November 31, 2003. There were 47 males and 26 females ranging in age from 31 years to 79 years (average $61.3\pm9.8$ years). Observation periods after operative procedures were 10 to 1238 days (average $763\pm319.8$ days). Left longitudinal parasternal incision as a standard procedure was done to approach the heart after dissection of the left internal thoracic artery by partial or total resection of 3rd to 5th ribs. Result: Of those patients, 46 patients were transferred to ICU after extubation at operation room and 58 patients were extubated within 3 hours after operation. Average ICU staying periods was $26.8\pm11.5$ hours. Follow-up angiography during admission was done in 36 patients and showed 100% patency. Only one patient died on the 10$^{th}$ post operative day because of sudden CVA. Complications included wound problems in 4 patients, and constructing pericardial window using thoracoscopy due to continuous pericardial effusion in 1. Permanent pacemaker was inserted in one patient owing to sick sinus syndrome. In one patient with recurrence of angina 8 months after operation, stenosis at anastomic site was found and improved with balloon dilatation. Conclusion: We were satisfied with our results of MIDCAB in single and multi-vessel coronary artery disease. These results have made the cardiologists tried to operate positively and we expect widening operative indications including hybrid revascularization.

• Journal of the Korean Society of Radiology
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• v.84 no.4
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• pp.846-854
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• 2023

Vascular injuries of the extremities are associated with a high mortality rate. Conventionally, open surgery is the treatment of choice for peripheral vascular injuries. However, rapid development of devices and techniques in recent years has significantly increased the utilization and clinical application of endovascular treatment. Endovascular options for peripheral vascular injuries include stent-graft placement and embolization. The surgical approach is difficult in cases of axillo-subclavian or iliac artery injuries, and stent-graft placement is a widely accepted alternative to open surgery. Embolization can be considered for arterial injuries associated with active bleeding, pseudoaneurysms, and arteriovenous fistula and in patients in whom embolization can be safely performed without a risk of ischemic complications in the extremities. Endovascular treatment is a minimally invasive procedure and is useful as a simultaneous diagnostic and therapeutic approach, which serve as advantages of this technique that is widely utilized for vascular injuries of the extremities.

• Journal of Chest Surgery
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• v.43 no.5
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• pp.557-561
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• 2010

In the treatment of myasthenia gravis, thymectomy is generally accepted as the standard of therapy. For thymectomy, there have been various conventional open approaches including sternal splitting, but recently minimally invasive approaches have been increasingly applied. A 28-year-old man presenting with weakness of both hands and fatigability was diagnosed as having myasthenia gravis with thymic hyperplasia. He underwent a robot-assisted thymectomy with the 'da Vinci' surgical system. Through the right thoracic cavity, two thirds of the thymic gland was dissected, and the remainder was resected through the left; these procedures took, respectively, 1 hour and 30 minutes. The patient was discharged on the 8th postoperative day without complications. The minimally invasive approach with the 'da Vinci' surgical system is emerging as a popular choice and various advantages have been reported. Here we report the first successful case of robot-assisted thymectomy.

• 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 Chest Surgery
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• v.41 no.5
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• pp.568-572
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• 2008

Background: Minimally invasive surgery is currently popular, but this has been applied very sparingly to cardiac surgery because of some limitations. Our study evaluated the safety and efficacy of atrial septal defect (ASD) closure through a video-assisted mini-thoracotomy. Material and Method: Fifteen patients were analyzed. Their mean age was $31{\pm}6$ years. The mean ASD size was $24{\pm}5mm$ and there were 3 cases of significant tricuspid regurgitation. The working window was made through the right 4th intercostal space via a $4{\sim}5cm$ inframammary skin incision, CPB was conducted with performing peripheral cannulation. After cardioplegic arrest, the ASDs were closed with a patch (n=11) or direct sutures (n=4), and the procedures were assisted by using a thoracoscope. There were 3 cases of tricuspid repair and 1 case of mitral valve repair. The mean CPB time and aortic occlusion time were $160{\pm}47\;and\;70{\pm}26 $minutes, respectively. Result: There was no mortality, but there were 3 minor complications (one pneumothorax, one wound dehiscence and one arrhythmia). The mean hospital stay was $5.9{\pm}1.8$ days. The mean follow-up duration was $10.7{\pm}6.4$ months. The follow-up echocardiogram noted no residual ASD or significant tricuspid regurgitation. Three patients suffered from pain or numbness. Conclusion: This study showed satisfactory clinical and cosmetic results. Although the operative time is still too long, more experience and specialized equipment would make this technique a good option for treating ASD.