Patelis, Nikolaos; Bisdas, Theodosios; Jing, Zaiping; Feng, Jiaxuan; Trenner, Matthias; Tri Nugroho, Nyityasmono; Ocke Reis, Paulo Eduardo; Elkouri, Stephane; Lecis, Alexandre; Karam, Lamisse

Background: The corona virus disease (COVID-19) pandemic has radically changed the possibilities for vascular surgeons and trainees to exchange knowledge and experience. The aim of the present survey is to inventorize the e-learning needs of vascular surgeons and trainees as well as the strengths and weaknesses of vascular e-Learning. Methods: An online survey consisting of 18 questions was created in English, with a separate bilingual English-Mandarin version. The survey was dispersed to vascular surgeons and trainees worldwide through social media and via direct messaging from June 15, 2020 to October 15, 2020. Results: Eight hundred and fifty-six records from 84 different countries could be included. Most participants attended several online activities (>4: n = 461, 54%; 2–4: n = 300, 35%; 1: n = 95, 11%) and evaluated online activities as positive or very positive (84.7%). In deciding upon participation, the topic of the activity was most important (n = 440, 51.4%), followed by the reputation of the presenter or the panel (n = 178, 20.8%), but not necessarily receiving accreditation or certification (n = 52, 6.1%). The survey identified several shortcomings in vascular e-Learning during the pandemic: limited possibility to attend due to lack of time and increased workload (n = 432, 50.5%), no protected/allocated time (n = 488, 57%) and no accreditation or certification, while technical shortcomings were only a minor problem (n = 25, 2.9%). Conclusions: During the COVID-19 pandemic vascular e-Learning has been used frequently and was appreciated by vascular professionals from around the globe. The survey identified strengths and weaknesses in current e-Learning that can be used to further improve online learning in vascular surgery.

Tekin, Ali İhsan; Tuncer, Osman Nuri; Memetoğlu, Mehmet Erdem; Arslan, Ümit; Öztekin, Ahmet; Yağmur, Bayram; Biçer, Mahmut; Özmen, Rıfat

Background Endothermal treatment of the great saphenous vein has become the first line of treatment for superficial venous reflux. A new technique for venous insufficiency is non-thermal ablation with vein sealing system which comprises the endovenous delivery of cyanoacrylate tissue adhesive to the vein causing fibrosis. Methods This is a single-center prospective study of treatment of great saphenous vein incompetence in 62 patients with vein sealing system (Biolas VariClose® FG Group, Turkey). All cases were implemented under local anesthesia. Tumescent anesthesia was not required. Patients were not given any nonsteroidal anti-inflammatory drug postoperatively; advised to wear elastic bandages for 1 day; and compression stockings were not offered. Results Treatment success was defined as complete occlusion of treated vein or recanalized segment shorter than 5 cm. Subtotal recanalization was defined as great saphenous vein flow containing 5–10 cm segment of treated vein. A recanalized great saphenous vein or treatment failure was defined as an open part of the treated vein segment more than 10 cm in length. At 1 week and 1 month control, duplex scans showed total occlusion for all patients (100%), total occlusion for 58 patients (93.5%), and subtotal occlusion for 4 patients (6.5%) at third month. At the end of 6 months, total occlusion 56 patients (90.3%) and subtotal occlusion for 2 patients (3.2%). For 4 (6.5%) patients, no occlusion was observed, and the diameter was >11 mm. Embolization of great saphenous vein with cyanoacrylate has been performed since the beginning of this decade. Combined chemical and physical mechanism of action results in permanent vein closure. In a recently published study, a 24-month occlusion rate of 92% was demonstrated. The most commonly reported complications of cyanoacrylate use for the treatment of varicose vein disease, so far, include ecchymosis and phlebitis. Almeida et al. reported that phlebitis is the most frequent side effect at a rate of 16%. In our study, phlebitis rate was not as high as reported. It may be caused due to shorter time of follow-up in the hospital. Conclusion Endovenous ablation of incompetent great saphenous vein with cyanoacrylate-based glue is feasible. Operation time is short, and tumescent anesthesia is unnecessary as postprocedure compression stockings. Lack of significant side effects and an yearly success rate of 100% are benefits of the system.