• Journal of Korean Neurosurgical Society
• /
• 제57권5호
• /
• pp.359-363
• /
• 2015

Objective : Ventriculoperitoneal (VP) shunt complication is a major obstacle in the management of hydrocephalus. To study the differences of VP shunt complications between children and adults, we analyzed shunt revision surgery performed at our hospital during the past 10 years. Methods : Patients who had undergone shunt revision surgery from January 2001 to December 2010 were evaluated retrospectively by chart review about age distribution, etiology of hydrocephalus, and causes of revision. Patients were grouped into below and above 20 years old. Results : Among 528 cases of VP shunt surgery performed in our hospital over 10 years, 146 (27.7%) were revision surgery. Infection and obstruction were the most common causes of revision. Fifty-one patients were operated on within 1 month after original VP shunt surgery. Thirty-six of 46 infection cases were operated before 6 months after the initial VP shunt. Incidence of shunt catheter fracture was higher in younger patients compared to older. Two of 8 fractured catheters in the younger group were due to calcification and degradation of shunt catheters with fibrous adhesion to surrounding tissue. Conclusion : The complications of VP shunts were different between children and adults. The incidence of shunt catheter fracture was higher in younger patients. Degradation of shunt catheter associated with surrounding tissue calcification could be one of the reasons of the difference in facture rates.

• Journal of Yeungnam Medical Science
• /
• 제16권2호
• /
• pp.347-356
• /
• 1999

복막 투석은 혈액 투석 및 신 이식과 함께 말기 신 질환의 중요한 치료 방법의 하나로 성공적인 복막 투석을 위해서는 복막 투석에 따른 여러 합병증을 줄이는 것이 필수적이다. 그러나 도관 출구 감염이나 복막염 등 투석 관련 감염은 여전히 도관 제거로 인한 복막 투석의 중단을 유발하는 중요한 원인이 되고 있다. 영남대학 의과대학 부속병원에서 1993년 10월부터 1999년 2월까지 복막 투석을 시행 후 추적 가능한 139명의 환자를 대상으로 도관 출구 감염과 복막염의 발생 빈도 및 원인 균주, 도관 제거의 빈도 및 원인 균주, 도관 전환술의 성적, 그리고 mupirocin ointment 사용 전과 사용 후의 도관 출구 감염의 빈도 차이 등을 후향 분석하였다. 복막 투석을 시행한 총 환자-투석기간은 2,401개월이었고 도관 출구 감염은 36명의 환자에서 105례 발생하여 발생 빈도는 1/22.8 환자-개월이었고 복막염은 67명의 환자에서 112례 발생하여 그 빈도는 1/21.4 환자-개윌로 나타났다. 대다수 출구 감염의 경우 일반적인 투약에 잘 반응하였으나 치료에 불응하여 도관 전환술을 시행한 7명 중 5명은 메티실린 저항성 포도상 구균(Methicillin Resistant, Staphylococcus aureus, MRSA), 2명은 Pseudomonas aeruginosa에 의한 감염이었다. revision후 3명에서 감염이 재발하였으나 한 명은 항생제에 바로 치유되었고 또 한 명은 second revision으로 치료하였으며 나머지 한 명은 MRSA에 의한 반복 감염이 지속되어 결국 도관 제거와 동시에 도관 재삽입을 시행하였다. 재발에 대한 치료 후 평균 추적기간 14.0개월 동안 더 이상의 출구 감염은 없었다. 1998년 10월부터 1999년 2월까지 mupirocin을 국소 도포 한 34명의 환자를 살펴보면, pre-mupirocin 기간의 총 투석기간은 687개월이었고 그 기간동안 도관 출구 감염이 54례 발생하여 발생 빈도는 1/12.7 환자-개월로 나타났으나 mupirocin 기간의 경우 총 투석기간 136개월 동안 4례 발생하여 그 빈도가 1/34.0 환자-개월로 유의하게(P<0.01) 감소하였다. 도관 출구 감염의 72.2%가 SA에 의한 것으로 조기에 적절한 항생제 치료를 함으로써 대부분 완치되었고 일부 약제에 잘 반응하지 않고 반복 감염되어 도관 탈락의 위험이 있는 경우에도 도관 전환술을 통하여 비교적 안전하고 효과적으로 난치성 출구 감염을 치유할 수 있었다. 그리고 도관 출구 부위에 mupirocin을 간헐적으로 국소 도포 함으로써 포도상 구균(Staphylococcus aureus)에 의한 출구 감염을 예방할 수 있었다. 그러나 이러한 도관 전환술과 mupirocin의 장기적인 효과 및 부작용에 대해서는 보다 많은 환자군을 대상으로 하는 전향적 연구가 있어야 할 것으로 생각된다.

• Journal of Korean Neurosurgical Society
• /
• 제29권7호
• /
• pp.886-890
• /
• 2000

Objective : placement of ventricular catheter is important to achieve long-term patency of the shunt system. We describe a method of calculating the insertion site, trajectory, and the length of the ventricular catheter using CT parameters in shunt surgery. Patients and Methods : These can be rapidly obtained using a caliper from a scout cut and two axial scans at lateral ventricular and upper 3rd ventricular level. To compare this technique with traditional one, we analyzed 40 consecutive patients who underwent shunt surgery. Results : Of 20 patients undergoing ventriculoperitoneal shunt insertion using this technique, none had poor location of the proximal catheter. In the counterpart, 9 patients had poor location(p＝0.001). The number of patients who required revision surgery were also lower in the group using this technique, but it was not statistically significant (4 versus 2, p＝0.422). Mean follow-up period was shorter in this technique group. Conclusion : This technique provides an accurate placement of the proximal catheter without special instrument or additional expenses.

• 임상간호연구
• /
• 제29권3호
• /
• pp.211-222
• /
• 2023

Purpose: This study was conducted to update the existing evidence-based nursing clinical practice guideline for indwelling urinary catheterization (IUC). Methods: The guideline have been revised in 22 steps based on international standards. The quality of the practice guidelines to be used for revision was evaluated using the Appraisal of Guidelines for Research and Evaluation II. The evaluation of the content appropriateness and applicability of the draft recommendations of the revised practice guidelines was performed using the RAND/UCLA Appropriateness Method, a decision-making method developed by the RAND Corporation. Four guidelines were used for the revision. Results: The updated nursing practice guideline for IUC consisted of 9 domains and 134 recommendations. The numbers of recommendations in each domain were: 4 Assessment, 20 Equipment, 11 Catheter insertion, 52 Catheter maintenance, 4 Catheter and drainage bag change, 9 Catheter removal, 22 Complications management, 5 Education and consult, and 7 Hospital support. The recommended grade was 8.2% for A, 38.1% for B, and 53.7% for C. Among these, the major revision was done in 11 recommendations (8.2%). A total of 29 recommendations (21.6%) were newly added. 30 (22.4%) recommendations had minor revisions such as changes or addition for some words or sentences, and 13 (9.7%) recommendations were deleted. Conclusion: Revised nursing practice guideline is expected to serve as an evidence-based practice guideline for IUC in Korea. This guideline will provide health care providers, patients, and caregivers with information to help manage IUC, leading to improved patient outcomes.

• Journal of Korean Neurosurgical Society
• /
• 제53권3호
• /
• pp.150-154
• /
• 2013

Objective : To evaluate the effect of electromagnetic (EM) navigation system on ventriculoperitoneal (VP) shunt failure rate through comparing the result of standard shunt placement. Methods : All patients undergoing VP shunt from October 2007 to September 2010 were included in this retrospective study. The first group received shunt surgery using EM navigation. The second group had catheters inserted using manual method with anatomical landmark. The relationship between proximal catheter position and shunt revision rate was evaluated using postoperative computed tomography by a 3-point scale. 1) Grade I; optimal position free-floating in cerebrospinal fluid, 2) Grade II; touching choroid or ventricular wall, 3) Grade III; tip within parenchyma. Results : A total of 72 patients were participated, 27 with EM navigated shunts and 45 with standard shunts. Grade I was found in 25 patients from group 1 and 32 patients from group 2. Only 2 patients without use of navigation belonged to grade III. Proximal obstruction took place 7% in grade I, 15% in grade II and 100% in grade III. Shunt revision occurred in 11% of group 1 and 31% of group 2. Compared in terms of proximal catheter position, there was growing trend of revision rate according to increase of grade on each group. Although infection rate was similar between both groups, the result had no statistical meaning (p=0.905, chi-square test). Conclusion : The use of EM navigation in routine shunt surgery can eliminate poor shunt placement resulting in a dramatic reduction in failure rates.

• Archives of Plastic Surgery
• /
• 제35권2호
• /
• pp.159-164
• /
• 2008

Purpose: Microvascular free tissue transfer has become a reliable technique for the reconstruction of complex wounds. Occasionally, unexpected intraoperative thrombosis and/or spasm of recipient artery might be annoying problems even for the technically competent microvascular surgeons. If such problems are not treated properly, they will inevitably cause to flap failure. Methods: From January 2006 to February 2007, soft tissue reconstructions by free tissue transfers were performed on 21 patients having complex defects in the lower extremity. Although segmental revision and various pharmacologic agents were repeatedly applied, arterial occlusions were not managed in 6 cases. For removal of thrombi and release of spasm, Fogarty No. 2 or No. 3 catheters were inserted into the lumen to the proximal recipient artery. Its balloon was then inflated after passing through a resistant area. Next, the catheter was gently withdrawn backward. Results: After the Fogarty catheter was inserted two or three times, the pulsatile arterial flow was restored. When the catheter was inserted into the lumen, a feeling of resistance existed in a 5-10cm more proximal portion that could not be easily accessed from the vascular end. After the reestablishment of blood flow, successful anastomoses were achieved and immediate rethrombosis or spasm did not occur. No long-term sequelae associated with balloon trauma to the arterial wall were observed. Conclusion: The use of the Fogarty catheter can be an effective method in treating pedicle thrombosis and spasm. This is a very simple and rapid technique that offers microvascular surgeons another option to increase the success rate of microvascular anastomosis in free tissue transfers.

• 제어로봇시스템학회논문지
• /
• 제22권8호
• /
• pp.585-589
• /
• 2016

Recently, the robotic assist system for cardiovascular intervention gets continuously growing interest. The robotic cardiovascular intervention systems are largely two folds, systems for cardiac ablation procedure assist and systems for vascular intervention assist. For the systems, the clinician controls the catheter inserted through blood vessel to the heart via a master console or master manipulator. Most of the current master manipulators have structure of joystick-like pivoting 2 degree of freedom (DOF) handle in the core, which is used in parallel with other sliding switches and input devices. It however is desirable to have customized and optimized design manipulator that can provide clinician with intuitive control of the catheter motion fully utilizing the advantage of the use of robotic structure. A 6 DOF kinematic mechanism that can capture the motion control intention of the clinician in translational 3 DOF and rotational 3 DOF is proposed in this paper. Also, a master-slave motion relationship specially designed for the cardiac catheter manipulation motion is proposed and implemented in an experimental prototype. Design revision for implementation of more efficient motion and experiment in combination with an experimental slave robot system for catheter manipulation are underway.

• Archives of Plastic Surgery
• /
• 제47권1호
• /
• pp.97-101
• /
• 2020

Although the success rate of deep inferior epigastric perforator (DIEP) flaps has increased, late flap failures still occur and have a low salvage rate. The present article describes a case of salvage of a case of late flap failure using the pedicle vein as a vein graft source. A 50-yearold woman underwent a bilateral DIEP free flap procedure. On postoperative day 6, she experienced flap compromise and underwent emergency flap revision. In the flap revision, flap venous drainage and the superficial inferior epigastric vein were completely obstructed. A Fogarty catheter was used to remove a thrombus from the completely obstructed pedicle vein, and this pedicle vein was used as a graft source and was ligated in retrograde fashion to the flap vein stump. After injection of urokinase into the arterial branch, venous flow to the flap was restored. At a 6-month follow-up visit in the outpatient clinic, only partial fat necrosis at the flap was noted. By dissecting various perforators in the initial operation, decisions regarding immediate revision can be made with more confidence. Additionally, the combined procedures performed in this case may be helpful even for practitioners treating cases of late flap compromise.

• 대한영상의학회지
• /
• 제84권4호
• /
• pp.934-940
• /
• 2023

뇌실-복강 단락술은 가장 널리 사용되고 있는 수두증의 수술적 치료 방법이다. 단락술과 관련된 합병증은 비교적 흔하게 발생하며, 높은 단락장치 교정술 시행률과 관련이 있다. 그러나 원위도관이 다른 장기 내로 전위되는 경우, 특히 심장 및 혈관 내 전위는 드물게 보고되었다. 드물지만 잠재적으로 위험한 합병증에 대해 알고 있는 것은 신속한 처치를 통해 위중한 상황을 예방할 수 있기 때문에 중요하다. 저자들은 뇌실-복강 단락술 시행 2개월 후 원위도관이 좌측 내경정맥을 통해 심장 및 양측 폐동맥 내로 전위되었던 23세 남자 환자의 증례를 보고하고, 발생 가능한 기전과 치료에 관해 논의해 보고자 한다.

• Tuberculosis and Respiratory Diseases
• /
• 제79권2호
• /
• pp.98-100
• /
• 2016

We present a rare case of critically compromised airway secondary to a massively dilated sequestered colon conduit after several revision surgeries. A 71-year-old male patient had several operations after the diagnosis of gastric cancer. After initial treatment of pneumonia in the pulmonology department, he was transferred to the surgery department for feeding jejunostomy because of recurrent aspiration. However, he had respiratory failure requiring mechanical ventilation. The chest computed tomography (CT) scan showed pneumonic consolidation at both lower lungs and massive dilatation of the substernal interposed colon compressing the trachea. The dilated interposed colon was originated from the right colon, which was sequestered after the recent esophageal reconstruction with left colon interposition resulting blind pouch at both ends. It was treated with CT-guided pigtail catheter drainage via right supraclavicular route, which was left in place for 2 weeks, and then removed. The patient remained well clinically, and was discharged home.