• 제목/요약/키워드: Interposition

검색결과 160건 처리시간 0.027초

Titanium Plate Fixation for Sternal Dehiscence in Major Cardiac Surgery

  • Kim, Wan Kee;Kim, Joon Bum;Kim, Gwan Sic;Jung, Sung-Ho;Choo, Suk Jung;Chung, Cheol Hyun;Lee, Jae Won
    • Journal of Chest Surgery
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    • 제46권4호
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    • pp.279-284
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    • 2013
  • Background: Sternal dehiscence is one of the most troublesome complications following cardiac surgery. Treatment failure and consequent lethal outcomes are very common. The aim of this study was to evaluate titanium plate fixation as a treatment for sternal dehiscence following major cardiac surgery. Materials and Methods: Between 2010 and 2012, 17 patients underwent sternal reconstruction using horizontal titanium plating for the treatment of post-cardiac-surgery sternal dehiscence. The plates were cut and shaped, and then were fixed to corresponding costal segments using 2-3 titanium screws per each side. Results: The median age of our patients was 66 years (range, 50 to 78 years) and 9 were female. Indications for sternal reconstruction included aseptic sternal dehiscence in 3 patients and osteomyelitis in 14 patients including 6 patients who were diagnosed with mediastinitis. During the operation, sternal resection and autologous flap interposition were combined in 11 patients. One patient died due to sepsis. Two patients required additional soft tissue wound revisions. Another patient presented with a tuberculous wound infection which was resolved using anti-tuberculosis medications. The postoperative course was uncomplicated in the other 13 patients. Conclusion: Titanium plate fixation that combines appropriate debridement and flap interposition is very effective for the treatment of sternal dehiscence following major cardiac surgery.

유리공장이식편을 이용한 합병된 부식성 식도협착의 재건술 (Jejunal Free Graft for Complicated Corrosive Esophageal Stricture)

  • 이호석;이성수;심영목
    • Journal of Chest Surgery
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    • 제38권6호
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    • pp.445-449
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    • 2005
  • 부식성 식도협착의 재건수술시 대장의 혈액순환이 나쁜 경우 또는 대장치환술 후 허혈성 부전이 나타난 경우 가장 적합한 재건장기로는 유리공장이식편을 들 수 있다. 복잡하게 합병된 부식성식도협착 환자에서 유리공장이식편을 이용하여 식도재건술을 시행한 4예를 보고하고자 한다. 일차식도재건술로서 4예 중 3예는 대장치환술을, 1예는 장천공에 의한 복막염으로 Whipple's 술식 및 공장루설치술을 받았다. 1예는 인두대장문합부의에 유리공장첩포 이식을, 2예는 대장이식편 부전 부위에 유리공장이식편 치환을 받았다. 1예는 대장의 일부와 유리공장이식편을 이용하여 인두공장대장공장문합술을 시행하였다. 수술 후 문합부위 누출로 인한 재수술이 1예 있었다. 장기추적 관찰상 모두 연하곤란이 없었다. 여러 가지 원인으로 인하여 합병된 식도재건술이 필요하여 유리공장이식편을 사용했던 경우 만족할 술 후 이환율과 연하기능을 보였다.

Ligamentoplasty with interposition of the proximal interphalangeal joint in the treatment of unicondylar osteochondral defects: a cadaveric feasibility study

  • Hery, Jean-Charles;Picart, Baptiste;Malherbe, Melanie;Hulet, Christophe;Lombard, Aude
    • Archives of Plastic Surgery
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    • 제48권6호
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    • pp.635-640
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    • 2021
  • Background Injuries to the proximal interphalangeal (PIP) joint are common and complex. However, the treatment of osteochondral defects of the head of the proximal phalanx has rarely been described. Herein, we propose a new technique for the management of unicondylar defects of the proximal phalanx that can restore joint amplitudes and provide PIP stability. Methods In this cadaveric feasibility study, unicondylar defects were generated using striking wedges and chisels. First, a transverse tunnel measuring 2 mm in diameter passing through the head of the proximal phalanx was made. A second tunnel at the base of the middle phalanx with the same diameter was then created. The hemitendon of the flexor carpi radialis graft was passed through each of these tunnels. The proximal end of the graft was interposed in the area with a loss of bone substance. The ligamentoplasty was then tensed and fixed by two anchors on the proximal phalanx. Joint amplitudes and frontal stability were measured preoperatively and postoperatively. Results There was no significant change in the joint's range of motion: preoperatively, the mean mobility arcs were -2° to 113.80°, and they were -2° to 110° after the procedure (P=0.999). There was no significant difference in joint stability (P>0.05). Conclusions Ligamentoplasty with PIP interposition appears to be a possible solution for the management of unicondylar defects of the proximal phalanx. An evaluation of clinical results is planned in order to definitively confirm the validity of this procedure.

Acquired noncaustic esophageal strictures in children

  • Sag, Elif;Bahadir, Aysenur;Imamoglu, Mustafa;Sag, Sefa;Reis, Gokce Pinar;Erduran, Erol;Cakir, Murat
    • Clinical and Experimental Pediatrics
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    • 제63권11호
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    • pp.447-450
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    • 2020
  • Background: Esophageal stricture (ES) is an uncommon clinic entity in pediatrics that may be congenital or acquired in childhood. Acquired noncaustic ES is very rare, and clinical features of affected patients are unknown. Purpose: We aimed to evaluate the clinical findings, and outcomes of patients with acquired noncaustic ES to aid physicians in the early referral of patients to gastroenterologists. Methods: The medical data of patients with acquired noncaustic ES who were followed in our gastroenterology clinic between January 2009 and December 2019 were reviewed. Results: Acquired noncaustic ES was found in 12 of the 4,950 patients (0.24%) who underwent endoscopy during the study period. The main symptoms were dysphagia (58.3%), vomiting (33.3%), and chronic anemia (8.3%). Chronic malnutrition and underweight were found in 66.6% of the patients. The most common etiological factors were radiotherapy, peptic reflux, and achalasia (16.6%, each), while chemotherapy, squamous-cell carcinoma (SC) of the esophagus, eosinophilic esophagitis (EoE), esophageal web, epidermolysis bullosa, and esophageal diverticulum (8.2%, each) were the other etiological factors. Patients with EoE underwent endoscopic bougie dilation in addition to steroid use and elimination diet. Patients with epidermolysis bullosa and esophageal web underwent bougie dilation. Patients with peptic reflux-related ES were initially put on antireflux therapy, but during follow-up, one patient required esophageal replacement with colonic interposition. Patients with radiotherapy-related ES recovered with medical therapy. The patient with initially underwent surgical gastrostomy and tumoral mass excision. The patient then received chemotherapy and radiotherapy and underwent jejunal interposition. Patients with achalasia underwent surgical esophagomyotomy. Conclusion: The presence of solid dysphagia, malnutrition, and an associated disease may alert physicians to the presence of ES.

Unconventional shunt surgery for non-cirrhotic portal hypertension in patients not suitable for proximal splenorenal shunt

  • Harilal, S L;Biju Pottakkat;Senthil Gnanasekaran;Kalayarasan Raja
    • 한국간담췌외과학회지
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    • 제27권3호
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    • pp.264-270
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    • 2023
  • Backgrounds/Aims: Proximal splenorenal shunt (PSRS) is a commonly performed procedure to decompress portal hypertension, in patients with refractory variceal bleed, especially in non-cirrhotic portal hypertension (NCPH). If conventional methods are hindered by any technical or pathological factors, alternative surgical techniques may be required. This study analyzes the effectiveness of various unconventional shunt surgeries performed for NCPH. Methods: A retrospective analysis of NCPH patients who underwent unconventional shunt surgeries during the period July 2011 to June 2022 was conducted. All patients were followed up for a minimum of 12 months with doppler study of the shunt to assess shunt patency, and upper gastrointestinal endoscopy to evaluate the regression of varices. Results: During the study period, 130 patients underwent shunt surgery; among these, 31 underwent unconventional shunts (splenoadrenal shunt [SAS], 12; interposition mesocaval shunt [iMCS], 8; interposition PSRS [iPSRS], 6; jejunal vein-cava shunt [JCS], 3; left gastroepiploic-renal shunt [LGERS], 2). The main indications for unconventional shunts were left renal vein aberration (SAS, 8/12), splenic vein narrowing (iMCS, 5/8), portalhypertensive vascular changes (iPSRS, 6/6), and portomesenteric thrombosis (JCS, 3/3). The median fall in portal pressure was more in SAS (12.1 mm Hg), and operative time more in JCS, 8.4 hours (range, 5-9 hours). During a median follow-up of 36 months (6-54 months), shunt thrombosis had been reported in all cases of LGERS, and less in SAS (3/12). Variceal regression rate was high in SAS, and least in LGERS. Hypersplenism had reversed in all patients, and 6/31 patients had a recurrent bleed. Conclusions: Unconventional shunt surgery is effective in patients unsuited for other shunts, especially PSRS, and it achieves the desired effects in a significant proportion of patients.

위암 환자에서 원위부 위절제 후 공장낭 간치술 (Jejunal Pouch Interposition (JPI) after Distal Gastrectomy in Patients with Gastric Cancer)

  • 전해명;김욱;허훈;이준현;원종만
    • Journal of Gastric Cancer
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    • 제4권4호
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    • pp.242-251
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    • 2004
  • 목적: 최근 조기위암 환자가 증가하기 때문에 수술 후 환자의 영양상태 개선을 포함한 삶의 질에 많은 관심이 모아지고 있다. 그러나 원위부 위절제 후 많이 이용되고 있는 Billroth-I, II 및 Roux-en-Y 술식은 남은 위의 작은 용량과 십이지장 우회에 따른 철분, 지방, 칼슘, 카로틴 등의 흡수 장애 등의 단점이 있다. 이를 보완하고자 저자들은 위 원위부 절제 후 소장낭을 저장소 역할을 하게 하고, 또한 십이지장과 문합하여 음식물이 생리적 방향으로 통과하도록 공장낭 간치술을 시행하였다. 대상 및 방법: 2001년 3월부터 2004년 2월까지 가톨릭의과대학 성가병원 외과에서 위암으로 원위부 절제를 시행한 196예를 공장낭 공장낭 간치술(JPI 군, n=100), B-I 군(n=29), B-II군(n=67)으로 나누어, 혈액 및 생화학적 검사의 변화, 몸무게를 포함한 영양학적 변화 및 위내시경 소견과 위 배출시간을 분석하였다. 결과: 환자들의 체중은 3군 모두 술 후 6개월에 최대로 감소된 후 회복되는 경향을 보였으며, 술 후 6개월, 1년, 2년째의 체중 감소율이 JPI군이 $5.14\%,\;3.01\%,\;2.37\%$로 B-I 군의 $8.41\%,\;6.69\%,\;5.90\%$B-II 군의 $7.50\%,\;7.65\%\;5.86\%$에 비해 의의있게 작았다(P=0.011, P=0.000, P=0.013). 검사실 소견은 술 후 6개월에 총 단백이 JPI 군이 B-I과 B-II 군보다 더 높았으며, 특히 1,2기 위암 환자의 경우 술 후 1년째 총 단백과 알부민이 JPI군에서 의의있게 높았다. 그러나 빈혈과 관련된 검사 칼슘, 인, 콜레스테롤, 트리글리세라이드 등에서는 3군 간의 차이는 관찰되지 않았다. 술 후 6개월, 1년, 2년째의 $\^{99m}$Tc-반 고형식(샌드위치)를 이용한 위 배출시간은 JPI 군이 102.5분, 83.1분, 58.1분, B-I 군이 95.5분, 92.0분, 58.5분, B-II 군이 53.9분, 69.1분, 50.2분으로 B-II 군이 가장 빠르고, JPI군이 가장 느리게 관찰되었다. 또한 위 내시경 검사 상 술 후 6개월째 정밀관찰이 불가능한 음식 저류가 JPI 군에서 가장 많았으나 시간이 지나면서 호전되는 것을 관찰하였다. 결론: 공장낭을 이용한 간치술은 기존 술식보다 1시간 정도 수술시간이 더 걸리고, 수술 후 초기에 위 배출시간이 지연되는 경향이 있지만, 몸무게를 포함한 영양학적인 면을 고려할 때, 장기 생존이 기대되는 제 I, II기 위암 환자에게 적용될 수 있는 또 하나의 좋은 재건 술식이라고 생각한다.

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근위부 위절제술 후 재건 술식에 따른 경과 관찰 (Subjective and Functional Results after a Proximal Gastrectomy: Prospective Study for Comparison of Reconstruction Procedures)

  • 김지훈;육정환;김병식;오성태
    • Journal of Gastric Cancer
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    • 제6권1호
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    • pp.1-5
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    • 2006
  • 목적: 근위부 위절제술 후 식도-위 문합술을 시행받은 환자에서 문합부 협착, 역류성 식도염 등이 드물지 않게 발생한다. 저자들 역시 이러한 합병증을 경험하였고 이를 극복하기 위한 방법으로 공장간치술을 시행하였으며 식도-위 문합술과 공장간치술 간의 경과 관찰을 통해 보다 나은 재건 술식을 찾고자 하였다. 대상 및 방법: 1998년 6월부터 2002년 12월까지 울산의대 서울아산병원 외과에서 상부위암 혹은 위상부의 위장관기질종양으로 진단받고 근위부 위절제술을 시행한 환자를 대상으로 재건 술식에 따른 수술시간, 수술 후 증상, 체중변화, 추적관찰 시 시행한 내시경 소견 등을 비교하였다. 결과: 대상 환자 총 33명의 평균연령은 59세였고, 남녀 비는 3 : 1이었다. 식도-위 문합술을 시행한 환자는 25명, 공장간치술을 시행한 환자는 8명이었다. 통과장애, 속쓰림, 신트림, 구토 등의 증상을 관찰하였으며 식도-위 문합술 환자에서 통과장애 12예, 구토 3예, 속쓰림 4예, 신트림 4예가 관찰되었으며, 공장간치술 환자에서는 통과장애 12예, 구토 3예가 있었고, 속쓰림과 신트림은 관찰되지 않았다. 수술 후 체중변화는 1개월 후 수술 전 체중의 90%까지 감소한 경우가 식도-위 문합술 환자에서 7예, 공장간치술 환자에서 없었다. 수술 후 추적 내시경 검사 결과 역류성 식도염이 관찰된 경우는 식도-위 문합술 환자에서 9예, 공장간치술 환자에서 0예였다. 문합부위 협착으로 인해 풍선 확장술이 필요하였던 경우가 식도-위 문합술 환자에서 4예, 공장간치술 환자에서 1예가 있었다. 결론: 상부 위절제 시 재건방법으로 역류성 식도염 및 여러 소화기 증상을 예방하기 위해 공장간치술이 식도-위문합술의 대안이 될 수 있다고 생각한다. 하지만 통계적 유의성을 가지기 위해 더 많은 대상군이 포함되어야 할 것이다.

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마이크로커널 기반 시스템 콜 인터포지션 기법 (Microkernel-based System Call Interposition Mechanism)

  • 김영필;고영웅;홍철호;김정녀;유혁
    • 한국정보보호학회:학술대회논문집
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    • 한국정보보호학회 2002년도 종합학술발표회논문집
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    • pp.183-186
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    • 2002
  • 시스템 콜 인터포지션 메커니즘은 침입 탐지 및 접근 제어와 같은 시스템 보안 기능을 강화하기 위해서 사용하는 방법이다. 현재까지 알려진 시스템 콜 인터포지션의 구현 방법은 크게 라이브러리 기반, 커널 기반 그리고 유저레벨 프로세스 기반의 접근방식이었다. 기존의 방식들은 대부분 범용적인 모노리틱커널에 적용되어 사용되고 있으며, 최근에 보안 운영체제로 개발되고 있는 마이크로커널 방식의 시스템에서는 적합하지 않다. 본 논문에서는 기존에 연구되었던 시스템 콜 인터포지션 방법들을 소개하고 마이크로커널 기반의 시스템 콜 인터포지션을 위한 메커니즘을 제안하고 있다. 제안된 메커니즘은 마이크로커널 위에 모니터 서버를 두고, IPC가 수행될 때 특정 시스템 콜을 비동기 IPC를 이용하여 감시하는 방식을 취하고 있다.

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Non-Surgical Management of Critically Compromised Airway Due to Dilatation of Interposed Colon

  • Min, Jinsoo;Cho, Young-Jae
    • Tuberculosis and Respiratory Diseases
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    • 제79권2호
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    • pp.98-100
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    • 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.

Information Retrieval: A Communication Process in the 21st Century Library

  • Umeozor, Susan Nnadozie
    • International Journal of Knowledge Content Development & Technology
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    • 제10권2호
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    • pp.7-18
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    • 2020
  • Communication is a process involving a group of interrelated elements working together for the purpose of information transfer. This paper discusses information retrieval as a communication process in the 21st century library. The difficulties associated with access to recorded knowledge through bibliographic control devices have been exacerbated by the interposition of additional encoding processes in the library and further decoding by the users. In addition, the innovation of internet/web has revolutionized the means and mode of communication process in the library by flooding information seekers with information and creating an illusion of self-sufficiency in many users. With these changes in information seeking behaviour and pattern, a cybernetic approach to information retrieval has emerged emphasizing adaptive control mechanisms and feedback processes. This paper argues that libraries should strive to continuously remain relevant by keeping abreast with changes in the behavior of information users. To this end, this paper proposes apomediatic-cybernetic model of communication, which illustrates information retrieval processes for the 21st-century library.