• Journal of Chest Surgery
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• 제50권1호
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• pp.30-35
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• 2017

Background: Tapered grafts, which have a smaller diameter on the arterial side, have been increasingly used for arteriovenous fistula (AVF) formation. We compared the outcomes of 4-6-mm tapered and 6-mm straight forearm loop arteriovenous grafts. Methods: A total of 103 patients receiving forearm loop arteriovenous grafts between March 2005 and March 2015 were retrospectively analyzed and separated into 2 groups (group A, 4- to 6-mm tapered grafts, n=78; group B, 6-mm straight grafts, n=25). In each group, complications and patency rates after surgery were assessed. Results: Clinical characteristics and laboratory results, except for cerebrovascular disease history (group A, 7.7%; group B, 28.0%; p=0.014), were similar between the groups. No significant differences were found for individual complications. Kaplan-Meier survival analysis revealed no significant differences in 1-year, 3-year, and 5-year patency rates between groups (61.8%, 44.9%, and 38.5% vs. 62.7%, 41.1%, and 35.3%, respectively). Conclusion: We found no significant differences in complication and patency rates between the tapered and straight graft groups. If there are no differences in complication and patency between the two graft types, tapered grafts may be a valuable option for AVF formation in light of their other advantages.

• Archives of Plastic Surgery
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• 제49권4호
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• pp.543-548
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• 2022

Microvascular reconstruction frequently requires anastomosis outside of the zone of injury for successful reconstruction. Multiple options exist for pedicle lengthening including vein grafts, arteriovenous loops, and arteriovenous bundle interposition grafts. The authors performed a systematic review of arteriovenous bundle interposition grafts to elucidate indications and outcomes of arteriovenous grafts in microvascular reconstruction. A systematic review of the literature was performed using targeted keywords. Data extraction was performed by two independent authors, and descriptive statistics were used to analyze pooled data. Forty-four patients underwent pedicle lengthening with an arteriovenous graft from the descending branch of the lateral circumflex femoral artery. Most common indications for flap reconstruction were malignancy (n = 12), trauma (n = 7), and diabetic ulceration (n = 4). The most commonly used free flap was the anterolateral thigh flap (n = 18). There were five complications, with one resulting in flap loss. Arteriovenous bundle interposition grafts are a viable option for pedicle lengthening when free flap distant anastomosis is required. The descending branch of the lateral circumflex femoral artery may be used for a variety of defects and can be used in conjunction with fasciocutaneous, osteocutaneous, muscle, and chimeric free flaps.

• Journal of Chest Surgery
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• 제42권1호
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• pp.41-45
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• 2009

배경: 혈액투석을 하는 만성신부전 환자는 반복된 혈관천자로 인해 정맥의 보존상태가 좋지 않아서 동정맥루 조성술이 어려운 경우가 많다. 이에 저자는 혈관천자 등으로부터 보호된 상완동맥 주위의 동반정맥(vena comitantes)을 정맥측 문합으로 이용하여 인조혈관 동정맥루 조성술을 시행하였고 이의 개존율, 합병증 등을 알아보고자 하였다. 대상 및 방법: 2006년 1월부터 2008년 5월까지 전주주름 부위의 표재정맥의 보존상태가 불량하여 심부정맥인 동반정맥을 정맥 유출로로 이용하여 수술한 12예의 인조혈관 동정맥루 환자를 대상으로 임상분석을 시행하였다. 동맥측 문합은 상완동맥에 단측문합하였으며 루프형태로 수술하였다. 대상환자의 남녀비는 7 : 5이고 평균연령을 $59{\pm}17$세이며 당뇨병을 동반한 경우가 6예, 고혈압을 동반한 경우가 10예였다. 결과: 수술 후 감염이나 출혈 등의 합병증은 없었고 5명의 환자에서 술 후 평균 3개월에 협착의 소견을 보였다. 3, 6, 12개월의 일차 개통율은 각각 75.0%, 65.6%, 52.5%였다. 협착이 있었던 환자들도 중재적 시술 후 혈류가 개선되어 현재까지 혈액투석이 가능하였고 12개월의 이차 개통율은 100%였다. 결론: 인조혈관을 이용한 동정맥루 조성술시 정맥천자 등에 의해 손상되지 않은 동반정맥을 이용하여 정맥문합 하면 비교적 양호한 개통율을 보이므로 표재정맥이 적당치 않은 경우 대체혈관으로 사용해도 무방할 것으로 생각된다.

• Archives of Plastic Surgery
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• 제42권5호
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• pp.652-655
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• 2015

• Journal of Korean Neurosurgical Society
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• 제53권4호
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• pp.213-217
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• 2013

Objective : Transradial angiography has become popular among many cardiologists as a diagnostic and therapeutic tool. However, transradial cerebral angiography is not utilized to the same extent. The purpose of this study is to present our experience regarding the usefulness of transradial cerebral angiography, especially in elderly patients. Methods : Between May 2011 and February 2012, a total of 126 cerebral angiographies were performed via a transradial approach in a single center. Of them, only 47 patients were over 60 years old. In our institution, we shifted the initial access from the right femoral artery to the right radial artery in all patients requiring cerebral angiography in 2011. We did not attempt radial access in 40 cases for variable reasons. Results : The procedural success rate was 92.2%. We have four failures of transradial angiography; two because of loop formations of the radial and brachial artery and two due to multiple puncture failures. All supra-aortic vessels were successfully catheterized. However, the selective catheterization rates of the left side distal vessels were lower, as success rates were 89.7% for the right internal carotid artery and 75% for the left internal carotid artery. Procedure-related vascular complications, such as puncture site hematoma, hand ischemia, pseudoaneurysm, arteriovenous fistula and arterial dissection were not observed in our series. However, intraprocedural thrombosis developed in one patient, which was resolved completely by intraarterial thrombolytic agents. Conclusion : With advancing patient's age, we believe that transradial cerebral angiography is a useful tool to decrease patient's discomfort and more effectively manage the vessel tortuosity.