• Title/Summary/Keyword: Microvascular anastomosis

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End-to-End Anastomosis of an Unanticipated Vertebral Artery Injury during C2 Pedicle Screwing

  • Nam, Kyung-Hun;Sung, Joo-Kyung;Park, Jae-Chan;Cho, Dae-Chul
    • Journal of Korean Neurosurgical Society
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    • v.48 no.4
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    • pp.363-366
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    • 2010
  • Vertebral artery (VA) injury is a rare and serious complication of cervical spine surgery; this is due to difficulty in controlling hemorrhage, which can result in severe hypotension and cardiac arrest, and uncertain neurologic consequences. The authors report an extremely rare case of a 56-year-old woman who underwent direct surgical repair by end-to-end anatomosis of an unanticipated VA injury during C2 pedicle screwing. Postoperatively, the patient showed no neurological deterioration and computed tomography angiography of the VA demonstrated normal blood flow. Although direct occlusion of an injured VA by surgical ligation or endovascular embolization has been used for management of an unanticipated VA injury during surgery, these methods may be associated with significant morbidity and mortality. However, despite its technical demand, microvascular primary repair can restore normal blood flow and minimizes the risk of immediate or delayed ischemic complications. Here we report an iatrogenic VA injury during C2 pedicle screwing, which was successfully treated by end-to-end anastomosis.

Venous Free Flap with Interposition Bypass Graft for Arteriovenous Fistula Preservation: A Case Report

  • Cyril Awaida;Marion Aribert;Natalie Weger;Kendall Keck;Andrei Odobescu
    • Archives of Plastic Surgery
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    • v.50 no.6
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    • pp.568-572
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    • 2023
  • Cutaneous squamous cell carcinoma (CSCC) overlying an arteriovenous fistula (AVF) is rare and presents unique challenges. This case report describes a method of fistula preservation after CSCC excision using a flow-through venous free flap. The saphenous vein of the venous flap was used as flow-through segment for AVF preservation. The flap was inserted along the dorsal aspect of the forearm wound and microvascular anastomosis of the arterial inflow was completed using a vein just proximal to the radiocephalic fistula anastomosis. Venous outflow was established by creating an end-to-end vascular anastomosis between the cephalic vein and the greater saphenous vein. A separate subcutaneous vein was used to provide a low-pressure outflow for the flap to avoid congestion. This case demonstrates an option for AVF preservation that has not been previously described. It also highlights the importance of a multidisciplinary approach for the safe treatment of CSCCs overlying AVFs.

Treatment of Intraoperative Thrombosis and Spasm in Free Tissue Transfers Using the Fogarty Catheter (포가티 카테터를 이용한 유리조직 전이술 시 수술 중 혈전 및 연축의 치료)

  • Lee, Seung Ryul;Yun, Young Mook;Oh, Sang-Ha
    • Archives of Plastic Surgery
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    • v.35 no.2
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    • pp.159-164
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    • 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.

Microvascular Anastomosis Using Horizontal Mattress Suture Technique (Horizontal Mattress Suture Technique을 이용한 미세혈관 문합)

  • Woo, Sang-Hyun;Kim, Jeong-Cheol;Jung, Yung-Sik;Choi, See-Ho;Choi, Won-Hee
    • Journal of Yeungnam Medical Science
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    • v.6 no.2
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    • pp.71-78
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    • 1989
  • Horizontal mattress suture technique on microvascular anastomosis of rat(body weight : 200-250gm) femoral artery was evaluated. The present study was conducted to compare the horizontal mattress suture with simple interrupted suture on the suture time, patency rate of the sutured vessels, and the histological changes of surgical site of the vessel wall during wound healing period. The mean suture time of the vessel wall with horizontal mattress suture technique was 15min. 49sec. ${\pm}$ 2.14, which is significantly shorter than that of simple interrupted suture technique. The patency rate of the sutured vessel in both groups was statistically not different each other till post-operative 3rd day but patency rate of horizontal mattress suture was higher than that of simple interrupted suture at post-operative 3rd week. The histological findings such as intimal noss, medial degenention and intimal regeneration were similar in both groups.

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Anatomical Review of Latissimus Dorsi Free Flap for Oral Cavity and Facial Reconstruction (구강 및 안면재건을 위한 광배근 유리피판의 해부학적 고찰)

  • Kim, Soung-Min;Jung, Young-Eun;Eo, Mi-Young;Kang, Ji-Young;Seo, Mi-Hyun;Kim, Hyun-Soo;Myoung, Hoon;Lee, Jong-Ho
    • Maxillofacial Plastic and Reconstructive Surgery
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    • v.33 no.6
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    • pp.549-558
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    • 2011
  • The latissimus dorsi myocutaneous flap (LDMF) was initially described at the turn of the century by Tansini et al, and latissimus dorsi myocutaneous free flap (LDMFF) was also first described for the coverage of a chronically infected scalp by Maxwell et al. As a pedicled flap, LDMF has been often used for breast reconstruction and for soft tissue replacement near the shoulder and the lower reaches of the head and neck. LDMFF is a flat and broad soft tissue flap with large-caliber thoracodorsal vessels for microvascular anastomosis. A skin paddle of the LDMFF can be more than $20{\times}40$ cm, so very large defects in the oral cavity and outer facial region can be covered by this LDMFF. Other advantages include consistent vascular anatomy, acceptable donor site morbidity and the ability to perform simultaneous flap harvest with tumor resection. For a better understanding of LDMFF as a routine reconstructive procedure in large defects of the oral cavity and facial legion, anatomical findings must be learned and memorized by young doctors during the special curriculum periods for the Korean national board of oral and maxillofacial surgery. This review article discusses the anatomical basis of LDMFF with Korean language.