Treatment of incompetent perforators in recurrent venous insufficiency with adhesive embolization and sclerotherapy

Recurrent lower limb venous insufficiency is often a challenge in clinical practice and is most commonly due to incompetent perforators. Many of these patients do not have adequate symptom relief with compression and require some form of treatment for incompetent perforator interruption. Various treatment methods have been tried with different efficiencies. Objective To evaluate the feasibility, efficiency and safety of an outpatient combined cyanoacrylate adhesion–sodium tetradecyl sulphate sclerotherapy for treatment of patients with symptoms of persistent or recurrent lower limb venous insufficiency secondary to incompetent perforators. Methods Eighty-three limbs of 69 patients with symptoms of persistent or recurrent lower limb venous insufficiency secondary to incompetent perforators were treated with cyanoacrylate embolization of incompetent perforators and sclerotherapy of dilated collateral veins (surface branch varicose veins). Technical success, procedural pain, perforator occlusion, venous occlusion, clinical improvement and ulcer healing were assessed. Follow-up was done three- and six-month post-procedure. Results Procedure could be successfully performed in all patients. One hundred and ninety-one perforators were treated in total. Perforator and varicose veins occlusion rate was 100%. Deep venous extension of cyanoacrylate occurred in four (4.8%) patients, with no adverse clinical outcome. Venous clinical severity score improved from a baseline of 8.18 ± 3.60 to 4.30 ± 2.48 on three-month follow-up and 2.42 ± 1.52 on six-month follow-up (p < 0.0001). All ulcers showed complete healing within three months. Significant prolonged thrombophlebitis occurred in 38.5% of limbs. Conclusion Combined cyanoacrylate adhesion and setrol sclerotherapy is technically easy, has a lot of advantages including being an outpatient procedure and highly efficacious but with a guarded safety profile.

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Registry to investigate the efficacy and safety of the VenaBlock© VeIn SEaling system for VaRicose veins in SingApore – Six months results of the RIVIERA trial

Phlebology The Journal of Venous Disease ◽

10.1177/02683555211025181 ◽

2021 ◽

pp. 026835552110251

Author(s):

YL Linn ◽

CJQ Yap ◽

SXY Soon ◽

SL Chan ◽

VBX Khoo ◽

...

Keyword(s):

Saphenous Vein ◽

Chronic Venous Insufficiency ◽

Venous Insufficiency ◽

Varicose Veins ◽

Duplex Ultrasound ◽

Venous Occlusion ◽

Clinical Severity ◽

Puncture Site ◽

Venous Clinical Severity Score

Background The Venablock© Venous Closure System (Invamed, Ankara, Turkey) is a novel cyanoacrylate-based non-thermal non-tumescent embolization device to block refluxing truncal veins for chronic venous insufficiency and varicose veins. The aim was to prospectively evaluate the safety and 6 months efficacy of Venablock© for the treatment of primary great saphenous vein (GSV) and small saphenous vein (SSV) incompetency in a multi-ethnic cohort from Singapore. Methods This was a single arm, single investigator prospective study of 29 patients (39 limbs, 39 truncal veins) recruited over a 5-month period (August 2019 to February 2020), who were treated with the Venablock© device at a tertiary vascular unit in Singapore. Patients with symptomatic varicose veins (C2–6) and had truncal reflux > 0.5 second on venous Duplex ultrasound were included. Follow-up occurred at 2 weeks, 3 and 6 months with dedicated quality of life questionnaires and a targeted Duplex ultrasound performed to check for continued venous occlusion. Result Mean age was 61.4 (±11.0) years and mean BMI was 26.2 (±5.7) kg/m2. 11/29 (37.9%) were males. Most common CEAP class treated was 2 (12/29, 41.3%). Mean diameter of treated GSV was 5.7 (±2.0) mm, 4.8 (±1.7) mm and 4.2 (±1.3) mm for the proximal, mid and distal above knee segments respectively. Mean time from access puncture to sheath removal was 23.4 (±10.0) mins. Vein occlusion at 2 weeks, 3 and 6 months was 39/39 (100%), 39/39 (100%) and 36/37 (97.2%) respectively. 5/29 (17.2%) developed puncture site infections, of which 3/29 (7.7%) required formal surgical drainage. 3/29 (7.7%) developed phlebitis. At 6 months, revised Venous Clinical Severity Score improved from 5.2 (±3.5) to 2.1 (±2.9; p < .001); EuroQol-5 Dimension score, from 7.4 (±2.1) to 5.7 (±1.4; p < .001); Aberdeen Varicose Vein Questionnaire score, from 18.1 (±15.5) to 7.9 (±8.9; p = .007); and Chronic Venous Insufficiency Questionnaire, from 18.6 (±16.2) to 4.5 (±6.3; p < .001). Conclusion Venablock© is a safe and efficacious option of treating truncal venous insufficiency in a multi-ethnic Asian cohort from Singapore in the short term. There is a significant improvement in QoL. Longer follow-up is required to assess the durability of this technique, in particular the higher puncture site infection rates observed compared to other glue-based therapies.

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Treating great and small saphenous vein insufficiency with histoacryl in patients with symptomatic varicose veins and increased risk of surgery

VASA ◽

10.1024/0301-1526/a000716 ◽

2018 ◽

Vol 47 (5) ◽

pp. 416-424 ◽

Cited By ~ 4

Author(s):

Karel Novotný ◽

Míla Roček ◽

Radek Pádr ◽

Radim Pavlík ◽

Michal Polovinčák ◽

...

Keyword(s):

Saphenous Vein ◽

Venous Insufficiency ◽

Varicose Veins ◽

Clinical Severity ◽

Cyanoacrylate Glue ◽

Venous Ulceration ◽

Increased Risk ◽

Venous Clinical Severity Score ◽

Vein Insufficiency

Abstract. Background: Treating great and small saphenous vein trunk insufficiency with cyanoacrylate glue is the least taxing treatment method of all available techniques. Due to long-term unavailability of commercial kits with n-butyl-2-cyanoacrylate (histoacryl) in the Czech Republic, we used a modified technique. Patients and methods: Fifty-six limbs in 49 patients suffering from great saphenous vein or small saphenous vein insufficiency in combination with symptomatic chronic venous insufficiency and complicating comorbidities were treated with a modified endovascular cyanoacrylate glue application technique. Results: The immediate success rate of the treatment was 98 %. In follow-up intervals of six weeks, six months, one year, and two years, the anatomical success rates of embolization (recanalization of no more than 5 cm of the junction) were 98, 96, 94, and 94 %, respectively. At identical intervals the venous insufficiency was scored according to the Aberdeen Varicose Vein Questionnaire and the American Venous Clinical Severity Score. In both cases, improvement was demonstrated over the two-year follow-up, with a 0.5 % significance level. Specific clinical signs of venous insufficiency were also evaluated, such as pain, oedema, clearance of varicose veins, and healing of venous ulceration. One severe complication – a pulmonary embolism – was reported, without consequences. Conclusions: We demonstrated that treating insufficient saphenous veins with modified histoacryl application brought a relief from symptoms of venous insufficiency and that the efficiency of this technique is comparable to commonly used methods.

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Mechanochemical ablation for symptomatic great saphenous vein reflux: A two-year follow-up

Phlebology The Journal of Venous Disease ◽

10.1177/0268355515627260 ◽

2016 ◽

Vol 32 (1) ◽

pp. 43-48 ◽

Cited By ~ 17

Author(s):

Pamela S Kim ◽

Muath Bishawi ◽

David Draughn ◽

Marab Boter ◽

Charles Gould ◽

...

Keyword(s):

Clinical Improvement ◽

Saphenous Vein ◽

Severity Score ◽

Great Saphenous Vein ◽

Clinical Severity ◽

Mechanochemical Ablation ◽

Venous Clinical Severity Score ◽

Occlusion Rate ◽

The Mean

Background Several studies have shown comparable early efficacy of mechanochemical ablation to endothermal techniques. The goal of this report was to show if early efficacy is maintained at 24 months. Methods This was a two-year analysis on the efficacy of mechanochemical ablation in patients with symptomatic C2 or more advanced chronic venous disease. Patients with reflux in the great saphenous vein involving the sapheno-femoral junction and no previous venous interventions were included. Demographic information, clinical, and procedural data were collected. The occlusion rate of treated veins was assessed with duplex ultrasound. Patient clinical improvement was assessed by Clinical-Etiology-Anatomy-Pathophysiology (CEAP) class and venous clinical severity score. Results Of the initial 126 patients, there were 65 patients with 24 month follow-up. Of these 65 patients, 70% were female, with a mean age of 70 ± 14 years and an average body mass index (BMI) of BMI of 30.5 ± 6. The mean great saphenous vein diameter in the upper thigh was 7.6 mm and the mean treatment length was 39 cm. Adjunctive treatment of the varicosities was performed in 14% of patients during the procedure. Closure rates were 100% at one week, 98% at three months, 95% at 12 months, and 92% at 24 months. There was one patient with complete and four with partial recanalization ranging from 7 to 12 cm (mean length 9 cm). There was significant improvement in CEAP and venous clinical severity score (P < .001) for all time intervals. Conclusion Early high occlusion rate with mechanochemical ablation is associated with significant clinical improvement which is maintained at 24 months, making it a very good option for the treatment of great saphenous vein incompetence.

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Cyanoacrylate adhesive embolization and sclerotherapy for primary varicose veins

Phlebology The Journal of Venous Disease ◽

10.1177/0268355517733339 ◽

2017 ◽

Vol 33 (8) ◽

pp. 547-557 ◽

Cited By ~ 2

Author(s):

Krishna Prasad Bellam Premnath ◽

Binu Joy ◽

Vijayakumar Akondi Raghavendra ◽

Ajith Toms ◽

Teena Sleeba

Keyword(s):

Saphenous Vein ◽

Great Saphenous Vein ◽

Varicose Veins ◽

Clinical Severity ◽

Cyanoacrylate Glue ◽

Cyanoacrylate Adhesive ◽

Venous Clinical Severity Score ◽

Primary Varicose Veins ◽

Vein Reflux

Various treatment methods are available for the treatment of varicose veins, and there has been a recent surge in the usage of cyanoacrylate glue for treating varicose veins. Purpose To investigate the technical possibility, efficiency and safety of cyanoacrylate adhesive embolization and sclerotherapy using commonly available n-butyl cyanoacrylate glue for the treatment of primary varicose veins due to great saphenous vein reflux with or without incompetent perforators. Materials and Methods One hundred forty-five limbs of 124 patients with varicose veins due to great saphenous vein reflux were subjected to cyanoacrylate adhesive embolization and sclerotherapy – adhesive embolization of great saphenous vein in the thigh and perforators using cyanoacrylate followed by sclerotherapy of any residual varicose veins in the leg. Procedural success, venous closure rates and clinical improvement were assessed. Follow-up for 1, 3, 6, 9 and 12 months was obtained. Results Technical success rate was 100%. Saphenous vein closure rate was 96.5% at one year. There was no femoral venous extension of cyanoacrylate in any of the patients. Posterior tibial vein extension of cyanoacrylate was seen in three patients (2.6%) without untoward clinical effect.Significant improvement was found in venous clinical severity score (VCSS) from a baseline mean of 7.98 ± 4.42 to 4.74 ± 3, 1.36 ± 1.65 and 0.79 ± 1.19 at 1, 6 and 12 months’ follow-up. Ulcer healing rate was 100%. Conclusion Cyanoacrylate adhesive embolization and sclerotherapy for the treatment of primary varicose veins is efficacious and can be performed as an outpatient procedure, but has a guarded safety profile due to its propensity to cause deep venous occlusion if not handled carefully.

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Endovascular Laser Therapy versus Open Surgery for the Treatment of Primary Varicose Veins of the Lower Limb

QJM ◽

10.1093/qjmed/hcab097.019 ◽

2021 ◽

Vol 114 (Supplement_1) ◽

Author(s):

Hazem Abd Elsalam Mohamed ◽

Assist. Prof. Dr. Ramez Mounir Wahba ◽

Fawzy Salah Fawzy ◽

Beshoy Maher Yacoub Gebrael

Keyword(s):

Laser Therapy ◽

Lower Limb ◽

Severity Score ◽

Open Surgery ◽

Varicose Veins ◽

Clinical Severity ◽

Surgery Group ◽

Clinical Severity Score ◽

Venous Clinical Severity Score ◽

Primary Varicose Veins

Abstract Background Venous drainage of the lower extremities is accomplished by a network of superficial veins connected to the deep veins by small perforator veins. Through a variety of pathophysiological mechanisms, weakness develops in the vein wall that results in varicosity over time. Varicosities typically form in the greater and lesser saphenous veins but also develop in branch vessels. Obstruction of the iliac veins or inferior vena cava can result in extensive varicose veins Objective s: The aim of this work is to compare the outcome of endovascular laser therapy versus open surgery in management of primary varicose veins in lower limb. Patients and Methods Type of study is a prospective, randomized, clinical study. This study was conducted on 30 patients with primary varicose veins of the lower limb, 15 patients were subjected to endovascular laser therapy for treatment of varicose veins of the lower limb (EVLA group) and 15 patients were managed by standard open surgery for treatment of varicose veins of the lower limb (surgery group). The patients were randomized selected from surgery clinic in Eldemerdash Hospital. The work was carried out in the period from June 2017 to December 2018. Results Both groups were well matched regarding age(P = 0.352) and sex (P = 0.713), type of vein diseased(P = 0.913), CEAP classification (P = 0.910) and also regarding BMI (P = 0.761). Regarding preoperative venous clinical severity score, the median(IQR) for group A (surgery group) was (5), and for group B (laser group) was (5) without statistical significant differences between both groups (P value =0.524). Many studies have shown that there was some difference in between two methods of treatment of primary varicose veins of the lower limbs open vascular surgery and endovascular laser therapy. Regarding Six weeks post-operative VCSS assessment, the VCSS score in the surgery group was statistically significantly higher (p < 0.001). However, at one and two years after the intervention The VCSS scores converged and the difference between the groups was no longer statistically significant. Conclusion The presented results show that intreatment of varicose veins with both endovascular laser ablation and open surgery there was improvement in the clinical status of the patient occur after both but EVLA was more effective early which was observed by measuring venous clinical severity score. EVLA show distinct advantages over open surgery especially in post operative pain, analgesia use and time needed to return to work.

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Early-Term Outcomes for Treatment of Saphenous Vein Insufficiency with N-Butyl Cyanoacrylate: A Novel, Non-Thermal, and Non-Tumescent Percutaneous Embolization Technique

The Heart Surgery Forum ◽

10.1532/hsf.1496 ◽

2016 ◽

Vol 19 (3) ◽

pp. 118 ◽

Cited By ~ 16

Author(s):

Mustafa Tok ◽

Oktay Tüydeş ◽

Ahmet Yüksel ◽

Sefa Şenol ◽

Serkan Akarsu

Keyword(s):

Saphenous Vein ◽

Clinical Severity ◽

Percutaneous Embolization ◽

Early Term ◽

Technical Success Rate ◽

Venous Clinical Severity Score ◽

Occlusion Rate ◽

Vein Insufficiency

Background: The purpose of this study was to present early-term outcomes of VariClose® Vein Sealing System, which is a novel, non-thermal, and non-tumescent percutaneous embolization technique for treatment of saphenous vein insufficiency. Methods: Between March 2014 and July 2015, 189 saphenous veins in 141 patients were treated with Variclose Vein Sealing System containing n-butyl cyanoacrylate. Pre-, intra-, post-procedural, and follow-up data of patients were collected and retrospectively reviewed. Results: Mean age of patients was 42.5 ± 14.0 years, of which 53% were female. Technical success rate of intervention was 98.9%. Mean procedure time was 14.3 ± 7.5 minutes. Eighty-nine percent of patients (n = 126/141) were available at mean follow-up time of 6.7 months. Mean Venous Clinical Severity Score was significantly improved from 8.3 ± 2.2 at pre-procedure period to 3.3 ± 1.8 at follow-up. No complete recanalization was observed, but 2 patients were presented with partial recanalization during follow-up. The complete occlusion rate was 98.4%. No serious adverse event related to procedure was observed. Conclusion: Variclose Vein Sealing System appears to be safe and effective in treatment of saphenous vein insufficiency. Further randomized studies with long-term outcomes are required for determining optimal treatment modality in patients with saphenous vein insufficiency.

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Clinical, ultrasonographic and histological findings in varicose vein surgery

Revista da Associação Médica Brasileira ◽

10.1590/1806-9282.64.08.729 ◽

2018 ◽

Vol 64 (8) ◽

pp. 729-735

Author(s):

Moacir de Mello Porciunculla ◽

Dafne Braga Diamante Leiderman ◽

Rodrigo Altenfeder ◽

Celina Siqueira Barbosa Pereira ◽

Alexandre Fioranelli ◽

...

Keyword(s):

Saphenous Vein ◽

Varicose Vein ◽

Lower Limb ◽

Chronic Venous Insufficiency ◽

Venous Insufficiency ◽

Great Saphenous Vein ◽

Varicose Veins ◽

Clinical Severity ◽

Clinical Classification ◽

Histopathological Changes

SUMMARY OBJECTIVE This study aims to correlate the demographic data, different clinical degrees of chronic venous insufficiency (CEAP), ultrasound findings of saphenofemoral junction (SFJ) reflux, and anatomopathological findings of the proximal segment of the great saphenous vein (GSV) extracted from patients with primary chronic venous insufficiency (CVI) submitted to stripping of the great saphenous vein for the treatment of lower limb varicose. METHOD This is a prospective study of 84 patients (110 limbs) who were submitted to the stripping of the great saphenous vein for the treatment of varicose veins of the lower limbs, who were evaluated for CEAP clinical classification, the presence of reflux at the SFJ with Doppler ultrasonography, and histopathological changes. We study the relationship between the histopathological findings of the proximal GSV withdrawal of patients with CVI with a normal GSV control group from cadavers. RESULTS The mean age of the patients was higher in the advanced CEAPS categories when comparing C2 (46,1 years) with C4 (55,7 years) and C5-6(66 years), as well as C3 patients (50,6 years) with C5-6 patients. The normal GSV wall thickness (mean 839,7 micrometers) was significantly lower than in the saphenous varicose vein (mean 1609,7 micrometers). The correlational analysis of reflux in SFJ with clinical classification or histopathological finding did not show statistically significant findings. CONCLUSIONS The greater the age, the greater the clinical severity of the patients. The GSV wall is thicker in patients with lower limb varicose veins, but those histopathological changes are not correlated with the disease’s clinical severity or reflux in the SFJ on a Doppler ultrasound.

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Outcomes associated with ablation compared to combined ablation and transilluminated powered phlebectomy in the treatment of venous varicosities

Phlebology The Journal of Venous Disease ◽

10.1177/0268355515604257 ◽

2016 ◽

Vol 31 (9) ◽

pp. 618-624 ◽

Cited By ~ 12

Author(s):

Andrea T Obi ◽

Bradley N Reames ◽

Trent J Rook ◽

Sandford O Mouch ◽

Arya Zarinsefat ◽

...

Keyword(s):

Radiofrequency Ablation ◽

Severity Score ◽

Venous Insufficiency ◽

Varicose Veins ◽

Clinical Severity ◽

Severity Scores ◽

Venous Clinical Severity Score ◽

Operative Complications ◽

Thrombotic Complications ◽

Procedure Type

Background Patients with painful varicose veins and venous insufficiency can be treated by eliminating axial reflux only or by eliminating axial reflux plus phlebectomy with transilluminated powered phlebectomy. This study was undertaken with the aim of determining and improving signs and symptoms of venous disease (measured by venous clinical severity score) and complications (by routine surveillance ultrasound and long-term post-operative follow up) for each treatment strategy. Methods We performed a retrospective evaluation of prospectively collected data from 979 limbs undergoing procedures for significant varicose veins and venous insufficiency from March 2008 until June 2014 performed at a single tertiary referral hospital. Patient demographics, Clinical Etiology Anatomy and Pathophysiology classification, venous clinical severity scores pre- and post-procedure, treatment chosen, and peri-operative complications were collected; descriptive statistics were calculated and unadjusted surgical outcomes for patients stratified by the procedure performed. Multivariable logistic regression was used to evaluate the relationship between procedure type and thrombotic complications after adjusting for patient characteristics, severity of disease, pre-operative anticoagulation, and post-operative compression. Result Venous clinical severity scores improved more with radiofrequency ablation + transilluminated powered phlebectomy as compared to radiofrequency ablation alone (3.8 ± 3.4 vs. 3.2 ± 3.1, p = 0.018). Regarding deep venous thrombosis, there was no significant difference between radiofrequency ablation + transilluminated powered phlebectomy vs. radiofrequency ablation alone. There was no statistical difference in asymptomatic endovenous heat-induced thrombosis or infection, although there were slightly more hematomas and cases of asymptomatic superficial thrombophlebitis with combined therapy. On multivariable analysis, only procedure type predicted thrombotic complications. Conclusion Ablation of axial reflux plus transilluminated powered phlebectomy produces improved outcomes as measured by venous clinical severity score, with slight increases in minor post-operative complications and should be strongly considered as initial therapy when patients present with significant symptomatic varicose veins and superficial venous insufficiency. Implementation of a standardized thromboprophylaxis protocol with individual risk assessment results in few significant thrombotic complications amongst high-risk patients, thus potentially obviating the need for routine post-operative duplex.

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Ablation therapy with cyanoacrylate glue and laser for refluxing great saphenous veins – a prospective randomised study

VASA ◽

10.1024/0301-1526/a000792 ◽

2019 ◽

Vol 48 (5) ◽

pp. 405-412

Author(s):

Eyüp Serhat Çalık ◽

Ümit Arslan ◽

Bilgehan Erkut

Keyword(s):

Laser Ablation ◽

Venous Insufficiency ◽

Clinical Severity ◽

Life Questionnaire ◽

Compression Stockings ◽

Cyanoacrylate Glue ◽

Endovenous Laser Ablation ◽

Saphenous Veins ◽

Venous Clinical Severity Score

Summary: Background: Endovenous cyanoacrylate ablation is a new technique for the treatment of clinically symptomatic venous insufficiency. The results of a prospective comparative study of cyanoacrylate glue versus endovenous laser ablation for the management of incompetent great saphenous veins are presented. Patients and methods: A total of 400 subjects were treated with cyanoacrylate ablation or endovenous laser ablation between April 2014 and April 2016. The preprocedural, procedural, postprocedural, and follow-up data were recorded and compared. Results: There were 208 procedures in cyanoacrylate ablation group (CAA) and 204 in endovenous laser ablation group (EVLA). Operative time was 13 ± 3.4 minutes in the CAA and 31.7 ± 8.8 minutes in the EVLA (< 0.001). All procedures in both groups were successful, and the target vein segments were fully occluded at the end of the procedure. Periprocedural pain was less in the CAA (< 0.001). Enduration, ecchymosis, and paresthesia rates were significantly higher in the EVLA (< 0.001). The mean length of follow-up was 14 months (range 10–16). The 3, 6 and 12 months closure rates were 97.4%, 95.6%, and 94.1% for EVLA and 98.6%, 97.1% and 96.6% for CAA respectively. In both groups, the Venous Clinical Severity Score and Chronic Venous Insufficiency Quality of Life Questionnaire with declined significantly with no difference between groups. Conclusions: Management of incompetent great saphenous veins both endovenous cyanoacrylate ablation and laser ablation results in high occlusion rates. Endovenous cyanoacrylate ablation technique is fast and simple with low periprocedural pain that does not require tumescent anesthesia and compression stockings.

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Two-year follow-up of a n-butyl-2-cyanoacrylate glue ablation for the treatment of saphenous vein insufficiency with a novel application catheter with guiding light

Vascular ◽

10.1177/1708538118823838 ◽

2019 ◽

Vol 27 (4) ◽

pp. 352-358

Author(s):

Atilla Sarac

Keyword(s):

Saphenous Vein ◽

Severity Score ◽

Venous Insufficiency ◽

Great Saphenous Vein ◽

Clinical Severity ◽

The Third ◽

Clinical Severity Score ◽

Venous Clinical Severity Score ◽

The Mean

Objectives This study aims to present the early results of a prospective study of the use of novel n-butyl-2 cyanoacrylate (VenaBlock)-based nontumescent endovenous ablation with a guiding light for the treatment of patients with varicose veins. Methods Five hundred and seventy-three patients with lower-limb venous insufficiency were treated within in the previous four years. The study enrolled adults aged 21–70 years with symptomatic moderate to severe varicosities (C2–C6 patients clinical, etiological, anatomical, and pathophysiological classification) and great saphenous vein reflux lasting longer than 0.5 s with great saphenous vein diameter ≥ 5.5 mm assessed in the standing position. Duplex ultrasound imaging and clinical follow-up were performed on the third day, first month, and sixth month. Clinical, etiological, anatomical, pathophysiological classification; venous clinical severity score; and completed Aberdeen varicose vein questionnaire were recorded. Results Five hundred and seventy-three patients aged 21–70 years with lower-extremity venous insufficiency treated with n-butyl-2. The mean treatment length was 30.6 ± 5.3 cm and the average n-butyl-2 delivered was 1.2 ± 0.3 ml. The mean procedure time was 10.8 ± 4.7 min. There was no deep venous thrombosis, pulmonary embolism, or paresthesia. We observed ecchymosis in eight patients (1.4%) at the entry site at the third day follow-up. Phlebitis was encountered with 10 (1.8%) patients. No skin pigmentation, hematoma, paresthesia, deep-vein thrombosis, or pulmonary embolism was observed. Procedural success was 100%, and complete occlusion was observed after treatment, at the third day follow-up and at first month. Kaplan–Meier analysis yielded with overall clinical recurrence-free rate after a mean follow-up of 23.96 months was 99.38%. All patients had significant improvement in venous clinical severity score and quality-of-life scores postoperatively ( p < 0.0001). Venous clinical severity score scores at preintervention and 24th month were 5.8 ± 1.0 (range 4–8) and 0.6 ± 0.6 (range 0–4), respectively ( p < 0.0001). Aberdeen varicose vein questionnaire scores at preintervention and 24th month were 19.7 ± 6.4 (range 9–30) and 4.4 ± 1.1 (range 1–9), respectively ( p < 0.0001). Conclusions The procedure appears to be feasible, safe, and efficient in treating the great majority of incompetent great saphenous veins with this technique.

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