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      • KCI등재

        Effectiveness of Percutaneous Aspiration Thrombectomy for Acute or Subacute Thromboembolism in Infrainguinal Arteries

        차중근,김찬순,김영환,김시형 대한영상의학회 2017 대한영상의학회지 Vol.76 No.6

        Purpose: To report the feasibility and long-term clinical outcome of percutaneous aspiration thrombectomy for treating acute or subacute arterial thromboembolism in the infrainguinal arteries. Materials and Methods: Thirty limbs of 29 patients were enrolled in this retrospective study between January 2004 and March 2014. Nine limbs underwent overnight catheter-directed thrombolysis followed by percutaneous aspiration thrombectomy (PAT). Eighteen limbs underwent PAT with adjunctive selective intra-arterial thrombolysis in a single session. The remaining three limbs underwent PAT alone. Balloon angioplasty (n = 16) or stent placement (n = 3) was performed as required. In-hospital mortality and complications were estimated. The primary patency rate and the rate of freedom from reintervention were calculated using the Kaplan-Meier method. Results: Technical success was achieved in 28 limbs. Clinical success was achieved in 27 limbs. The mean ankle-brachial index increased from 0.17 ± 0.26 to 0.98 ± 0.19 after the procedure. Three in-hospital deaths and no major amputations were recorded. Distal embolization of crural arteries occurred as a minor complication in five limbs, but no major complications occurred. The primary patency rate and the rate of freedom from reintervention were 74.9% and 90.9% at 1 year, respectively, and 66.6% and 80.8% at 2 years, respectively. Conclusion: PAT is a rapid and effective method to remove a thrombus from occluded infrainguinal arteries.

      • KCI등재

        속발성 분만 후 출혈의 임상 및 혈관 조영술의 특징과경도관 동맥 색전술의 결과

        백승대,강웅래,지승우,김영환,차중근 대한영상의학회 2018 대한영상의학회지 Vol.79 No.6

        Purpose: To analyze of clinical and angiographic features with outcome of transcatheter arterial embolization in patients with secondary postpartum hemorrhage. Materials and Methods: Clinical details and angiographic features with assessment of arterial embolization were reviewed in total 38 patients underwent arterial embolization at single tertiary referral center. Results: Twenty patients (53%) had Cesarean section. The major causes of bleeding were iatrogenic vascular injury, and retained placenta (55%). The patterns of vaginal bleeding were recorded as intermittent (50%), or as persistent (50%). Seven patients (18%) were hemodynamically unstable at presentation. Positive angiographic findings appeared in eighteen patients (47.3%). The frequency of pseudoaneurysm was statistically high in the Cesarean section (P<.001). The used embolic agents except gelfoam were N-butyl cyanoacrylate (n=7), and microcoil (n=7). Unilateral selective embolization (26.3%) was shown effective in superselective embolization of bleeding focus. Technical and clinical success rate were 100% and 97.4%, respectively with no complication. Sixteen resumed regular menstruation, and one pregnancy were observed in patients with available follow-up of over 6 months. Conclusion: Considerable rate of hemodynamically unstable patients was observed with high rate of positive angiography findings. Given high successful rate and few complications, early angiographic assessment with embolization should be considered. 목적: 속발성 분만 후 출혈 환자에서 임상 양상 및 혈관 조영술의 특징과 경도관 동맥 색전술의 결과를 알아보고자 하였다. 대상과 방법: 속발성 분만 후 출혈로 인해 단일 3차 의료기관에서 동맥 색전술을 시행한 38명의 환자를 대상으로 분만 방식, 출혈 원인, 임상 증상, 혈관 조영술 소견, 색전 물질과 방법, 결과 등에 대하여 후향적으로 분석하였다. 결과: 20명(53%)의 환자가 제왕절개를 시행하였으며, 출혈 원인은 의인성 혈관 손상(n=11), 잔류 태반(n=10), 자궁근 무력증(n=8), 후천성 자궁 동정맥 기형(n=5) 등 이었다. 간헐적(50%) 및 지속적(50%) 대량 질출혈이 임상적으로 관찰되었다. 7명(18%)의 환자에서 내원 시 저혈량 쇼크를 보였다. 혈관 조영술 상 18명이 양성 소견을 보였으며, 제왕절개 후 가성동맥류 빈도가 통계학적으로 의미 있게 높았다(P<0.001). 젤폼 이외에 N-butyl cyanoacrylate(7예), 미세코일(7예)을 사용하였다. 출혈 부위 초선택이 가능하였던10명의 환자(26.3%)에서는 단측 혈관 선택 색전술만으로 지혈이 성공적이었다. 기술적 성공률은 100%였으며, 임상적 성공률은 97.4%이였다. 추적 관찰이 가능했던 16명에서 정상 월경 주기를 보였으며, 1예의 정상 임신이 관찰되었다. 결론: 속발성 분만 후 출혈은 저혈량 쇼크를 보일 수 있으며, 양성 출혈 소견을 보이는 빈도가 높았다. 따라서 조기 혈관 조영술과 동맥 색전술이 필요하리라 생각된다.

      • KCI등재

        Portal vein embolization in intrahepatic portal vein injury after blunt trauma: a case report

        Cho Sung Hoon,Lee Sang Yub,차중근,홍지훈,Lee Sangcjeol,임경훈 대한외상학회 2022 大韓外傷學會誌 Vol.35 No.-

        Mortality from hepatic injury has declined over the last several decades for various reasons, including nonoperative management, such as angioembolization, in more than 80% of cases. Conversely, surgical treatment is preferred in intrahepatic portal vein injury due to several reasons. Here, we report a case that treatment of blunt traumatic liver injury accompanied by intrahepatic portal vein injury through portal vein embolization. A 29-year-old female patient was transferred to our trauma center for vehicular accident injuries. Contrast-enhanced abdominal computed tomography showed a massive hemoperitoneum and liver laceration (grade IV) with contrast extravasation suspected of the right portal vein branch but no other organ injury. Since vital signs were stable, we decided to perform nonsurgical radiologic intervention. Portography showed active bleeding of the posterior branch of the right portal vein. A pseudoaneurysm in the portal vein was embolized through percutaneous transhepatic portal vein puncture. On follow-up liver dynamic computed tomography performed 2 days after embolization, the posterior branch of the right portal vein was sufficiently embolized, and no liver parenchymal necrosis was observed. The patient was discharged without any complications 2 weeks later. This report suggests portal vein embolization as a good alternative treatment method for portal vein injury in patients with stable vital signs.

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