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Witte ME, Holewijn S, van der Veen D, Reijnen MM, Zeebregts CJ. Long-term results and predictors of failure after mechanochemical endovenous ablation in the treatment of primary great saphenous vein incompetence. Phlebology 2024; 39:9-19. [PMID: 37714534 DOI: 10.1177/02683555231202181] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/17/2023]
Abstract
BACKGROUND Mechanochemical endovenous ablation (MOCA) was introduced to treat superficial venous insufficiency of the lower leg with less pain and haematoma. Long-term outcome is still lacking. The purpose was to report long-term outcome and to analyse possible predictors for failure. METHODS The study was a retrospective pooled analysis of two prospective cohorts previously reported, but with prolonged long-term outcome up to 5-years follow-up. RESULTS 163 treated legs were analysed. Mean follow-up was 5.4±0.6 years, in which 33 total failures occurred. Four procedures were partially successful. VCSS improved significantly and remained stable after 1 and 2-years, but significantly rose again after 5-years. AVVQ dropped significantly, but increased after 1 year to 4.3 and 6.1 at 5-years follow-up. CONCLUSION MOCA was effective with minimal pain perioperative. However, anatomical success deteriorated after 1-year and showed even less results after 5-years, mainly due to partly recanalization, while clinical results were less affected. There were no clear clinical predictors for failure.
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Affiliation(s)
- Marianne E Witte
- Department of Surgery, NijSmellinghe Hospital, Drachten, Netherlands
| | | | | | - Michel Mpj Reijnen
- Department of Surgery, Rijnstate Hospital, Arnhem, Netherlands
- Multi-Modality Medical Imaging Group, TechMed Centre, University of Twente, Enschede, Netherlands
| | - Clark J Zeebregts
- Department of Surgery (Division of Vascular Surgery), University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
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Razaque A, Shazlee MK, Qamar S, Hyder SMS, Adel H. Early Results of Mechanochemical Ablation by Flebogrif and Radiofrequency Ablation in Treating Primary Varicose Veins of Lower Limb. Cureus 2023; 15:e45874. [PMID: 37885503 PMCID: PMC10598325 DOI: 10.7759/cureus.45874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/23/2023] [Indexed: 10/28/2023] Open
Abstract
Introduction Chronic venous insufficiency is a common condition that leads to the development of incompetent great or short saphenous veins (GSV or SSV) resulting in varicose vein development. Conservative management is initially employed for its treatment; however, the varicosities that do not respond to conservative management may require intervention by surgery or endovenous routes. Radiofrequency ablation (RFA) and mechanochemical ablation (MOCA) are the two most common endovascular techniques available for the management of incompetent GSV or SSV. Clarivein and Flebogrif are two devices to treat incompetent GSV or SSV by MOCA. Mechanical ablation is provided by their flexible cutting elements and chemical ablation is provided by polidocanol or sodium tetradecyl sulfate (STS). RFA uses radiofrequency waves to treat venous insufficiency. Therefore, the aim of this study was to determine the early treatment outcome results for incompetent GSV or SSV treated with RFA or MOCA by Flebogrif. Materials and methods This was a retrospective cross-sectional study undertaken at the Radiology Department of Indus Hospital and Health Network. Electronic Medical Records of all the patients who underwent RFA or MOCA for GSV or SSV for venous insufficiency from January 2021 to December 2021 were included. Both male and female patients aged 18 years and above diagnosed with venous insufficiency having Clinical, Etiologic, Anatomic, and Pathophysiologic (CEAP) scores of >1 were included. Statistical Package for Social Sciences (SPSS) v 22 (IBM Corp., Armonk, NY) was used for data entry and analysis. Results 137 patients were included in the present study with a mean age of 53.8 ± 12.1 years. Pre-procedure CEAP score was C3 in 59 (84.4%), C4 in four (5.7%), and C6 in seven (10.0%) patients in patients who underwent RFA, and it was successful in 69 (98.6%) patients. Pre-procedure CEAP score was C3 in 62 (92.5%), C4 in two (3.0%), and C6 in three (4.5%) patients who underwent MOCA, and it was successful in 59 (88.1%) patients. Pain was the most frequent complication observed in both RFA and MOCA. Conclusion RFA has a high success rate as compared to MOCA by Flebogrif in treating incompetent GSV or SSVs.
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Affiliation(s)
- Abdul Razaque
- Radiology, Indus Hospital and Health Network, Karachi, PAK
| | | | - Saqib Qamar
- Interventional Radiologist, Indus Hospital and Health Network, Karachi, PAK
| | | | - Hatem Adel
- Radiology, Indus Hospital and Health Network, Karachi, PAK
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Jun KW, Cho S. Third-generation treatment of varicose veins: cyanoacrylate adhesive closure and mechanochemical ablation. JOURNAL OF THE KOREAN MEDICAL ASSOCIATION 2022. [DOI: 10.5124/jkma.2022.65.4.217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Background: The mainstream of incompetent saphenous veins treatment has dramatically changed from the first-generation conventional high ligation and stripping surgery to the second-generation endovenous thermal ablation as a minimally invasive technique using laser or radiofrequency. The third-generation treatment of nonthermal non-tumescent techniques is already available, including cyanoacrylate adhesive closure (CAC) and mechanochemical ablation (MOCA).Current Concepts: The non-thermal non-tumescent techniques are developed to overcome the complications of thermal ablation, including nerve injury and vein perforation. The technique also reduces the need for painful tumescent anesthesia and postoperative compression. MOCA employs a dual injury using a single-catheter-based delivery system consisting of a mechanical abrasion with a rotating wire and chemical ablation with a sclerosant. CAC is executed by injecting a glue that produces a polymer with the blood and obliterates the lumen. CAC does not need tumescent anesthesia and postoperative compression. Therefore, patient recovery is fast and satisfaction is excellent. However, the new devices are expensive and not included in the medical insurance in Korea, and long-term effects of the new treatments are unproven; therefore, the cost-effectiveness is unconfirmed.Discussion and Conclusion: MOCA and CAC are newly developed minimal invasive treatments for varicose veins. They are reported to be safe and effective techniques. However, further studies are needed to evaluate the long-term outcomes and cost-effectiveness.
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De Maeseneer MG, Kakkos SK, Aherne T, Baekgaard N, Black S, Blomgren L, Giannoukas A, Gohel M, de Graaf R, Hamel-Desnos C, Jawien A, Jaworucka-Kaczorowska A, Lattimer CR, Mosti G, Noppeney T, van Rijn MJ, Stansby G, Esvs Guidelines Committee, Kolh P, Bastos Goncalves F, Chakfé N, Coscas R, de Borst GJ, Dias NV, Hinchliffe RJ, Koncar IB, Lindholt JS, Trimarchi S, Tulamo R, Twine CP, Vermassen F, Wanhainen A, Document Reviewers, Björck M, Labropoulos N, Lurie F, Mansilha A, Nyamekye IK, Ramirez Ortega M, Ulloa JH, Urbanek T, van Rij AM, Vuylsteke ME. Editor's Choice - European Society for Vascular Surgery (ESVS) 2022 Clinical Practice Guidelines on the Management of Chronic Venous Disease of the Lower Limbs. Eur J Vasc Endovasc Surg 2022; 63:184-267. [PMID: 35027279 DOI: 10.1016/j.ejvs.2021.12.024] [Citation(s) in RCA: 210] [Impact Index Per Article: 105.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Accepted: 11/12/2021] [Indexed: 01/12/2023]
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Lam YL, Alozai T, Schreve MA, de Smet AAEA, Vahl AC, Nagtzaam I, Lawson JA, Nieman FHM, Wittens CHA. A multicenter, randomized, dose-finding study of mechanochemical ablation using ClariVein and liquid polidocanol for great saphenous vein incompetence. J Vasc Surg Venous Lymphat Disord 2021; 10:856-864.e2. [PMID: 34781008 DOI: 10.1016/j.jvsv.2021.10.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 10/31/2021] [Indexed: 01/11/2023]
Abstract
BACKGROUND The purpose of the present study was to identify the ideal polidocanol (POL) concentration for mechanochemical ablation (MOCA) of the great saphenous vein (GSV) using the ClariVein system (Merit Medical, South Jordan, Utah). METHODS We performed a multicenter, randomized, controlled, single-blind trial with a follow-up period of 6 months. Patients with symptomatic primary truncal GSV incompetence were randomized to MOCA + 2% POL liquid (2% group) or MOCA + 3% POL liquid (3% group). The primary outcome was technical success (TS), defined as an open part of the treated vein segment of ≤10 cm in length. The secondary outcomes were alternative TS, defined as ≥85% occlusion of the treated vein segment, postoperative pain, venous clinical severity scores, Aberdeen varicose vein questionnaire scores, and short-form 36-item health survey questionnaire scores, and complications. RESULTS From 2012 to 2018, 364 patients (375 limbs) were included, of which, 189 limbs were randomly allocated to the 2% group and 186 to the 3% group. The TS rate at 6 months was 69.8% in the 2% group vs 78.0% in the 3% group (P = .027). A higher overall TS rate was seen in GSVs of ≤5.9 mm compared with GSVs >5.9 mm (84.3% vs 59.5%, respectively; P < .001). The alternative TS rate at 6 months was 61.4% in the 2% group and 67.7% in the 3% group (P = .028). The venous clinical severity scores, Aberdeen varicose vein questionnaire scores, and most short-form 36-item health survey questionnaire domains had improved in both groups (P < .002). Postprocedural pain was low. Two pulmonary embolisms and two deep vein thromboses were seen. Superficial venous thrombosis had occurred more often in the 3% group (18 vs 8 in the 2% group; P = .033). CONCLUSIONS The results from the present study showed a higher success rate for MOCA with 3% POL liquid than for MOCA with 2% POL liquid at 6 months of follow-up. However, the difference in quality of life was not significant. Long-term follow-up studies are required to investigate whether these results will be sustained in the future.
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Affiliation(s)
- Yee Lai Lam
- Department of Dermatology, Erasmus University Medical Center, Rotterdam, The Netherlands.
| | - Tamana Alozai
- Department of Surgery, Northwest Clinics, Alkmaar, The Netherlands
| | | | - André A E A de Smet
- Department of Vascular Surgery, Maasstad Hospital, Rotterdam, The Netherlands
| | - Anco C Vahl
- Department of Vascular Surgery, OLVG, East Location, Amsterdam, The Netherlands
| | - Ivo Nagtzaam
- Department of Dermatology, Maastricht University Medical Center, Maastricht, The Netherlands
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Mirandola M, Griso A, Migliara B, Cappellari TF, Giovannini F, Lino M. An Italian experience with mechanochemical ablation of the saphenous vein since 2012. J Vasc Surg Venous Lymphat Disord 2020; 8:999-1005. [DOI: 10.1016/j.jvsv.2020.01.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Accepted: 01/11/2020] [Indexed: 11/28/2022]
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Lambert G, Teplisky D, Cabezas M, Szhafir I, Silva M, Garriga M, Oliva A, Sierre S. Mechanochemical Endovenous Ablation of Varicose Veins in Pediatric Patients with Klippel-Trénaunay Syndrome: Feasibility, Safety, and Initial Results. J Vasc Interv Radiol 2020; 32:80-86. [PMID: 33139184 DOI: 10.1016/j.jvir.2020.08.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 08/12/2020] [Accepted: 08/23/2020] [Indexed: 12/14/2022] Open
Abstract
PURPOSE To evaluate feasibility, safety, and results of endovenous mechanochemical ablation (MOCA) for treatment of persistent embryonic and dysplastic veins in pediatric patients with Klippel-Trénaunay syndrome (KTS). MATERIALS AND METHODS Thirteen MOCA procedures were performed in 11 patients (age range, 4-16 years) with KTS and symptomatic persistent embryonic or dysplastic veins during a 24-month period. All patients were evaluated with color Doppler (CD) ultrasound (US), contrast-enhanced MR imaging, and venography to assess the anatomy of the target vessels and patency of the deep venous system. All procedures were performed under general anesthesia with a ClariVein catheter and liquid sodium tetradecyl sulfate as the sclerosing agent. US and fluoroscopic guidance were used in all cases. Technical success rate, primary occlusion rate, adverse effects, and recanalization rates were evaluated. Clinical and radiological (CD US) controls were performed 1 day, 7 days, 1 month, and 6 months after the procedure and once a year thereafter, with a mean follow-up of 16 months (range, 6-25 months). RESULTS Technical success and primary occlusion were achieved in all patients with no adverse events. During the follow-up period, CD US demonstrated partial recanalization and symptom recurrence in 2 patients (18%), 14 and 18 months after the initial procedure. These 2 patients had a second ablation procedure with no recanalization or symptom recurrence during the subsequent follow-up period. CONCLUSIONS MOCA is feasible and appears to be a safe and effective technique for treatment of varicose veins in pediatric patients with KTS.
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Affiliation(s)
- Gonzalo Lambert
- Department of Interventional Radiology, Hospital de Pediatría Prof. J. P. Garrahan, Combate de los Pozos 1881 (1245), Buenos Aires, Argentina
| | - Darío Teplisky
- Department of Interventional Radiology, Hospital de Pediatría Prof. J. P. Garrahan, Combate de los Pozos 1881 (1245), Buenos Aires, Argentina
| | - Mariela Cabezas
- Department of Interventional Radiology, Hospital de Pediatría Prof. J. P. Garrahan, Combate de los Pozos 1881 (1245), Buenos Aires, Argentina
| | - Ioná Szhafir
- Department of Interventional Radiology, Hospital de Pediatría Prof. J. P. Garrahan, Combate de los Pozos 1881 (1245), Buenos Aires, Argentina
| | - Mauricio Silva
- Department of Interventional Radiology, Hospital de Pediatría Prof. J. P. Garrahan, Combate de los Pozos 1881 (1245), Buenos Aires, Argentina
| | - Matías Garriga
- Department of Interventional Radiology, Hospital de Pediatría Prof. J. P. Garrahan, Combate de los Pozos 1881 (1245), Buenos Aires, Argentina
| | - Alejandro Oliva
- Department of Interventional Radiology, Hospital de Pediatría Prof. J. P. Garrahan, Combate de los Pozos 1881 (1245), Buenos Aires, Argentina
| | - Sergio Sierre
- Department of Interventional Radiology, Hospital de Pediatría Prof. J. P. Garrahan, Combate de los Pozos 1881 (1245), Buenos Aires, Argentina.
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Mosquera-Rey V, Del Castro Madrazo JA, Ángeles M Herrero M, Cordeu RA, Azofra EA, Pérez MA. Mechanochemical ablation for great and small saphenous veins insufficiency in patients with type III shunt. Phlebology 2020; 36:145-151. [PMID: 32847473 DOI: 10.1177/0268355520951695] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
OBJECTIVE the aim of this study was to assess the results of mechanochemical endovenous ablation either in the primary or recurrent saphenous vein insufficiency, including only patients with veno-venous shunt type III. METHODS retrospective analysis of a prospective study of patients with symptomatic chronic venous insufficiency who underwent ClariVein® technique. A total of 134 saphenous veins were included between August 2017 and August 2018. Follow-up was performed by Duplex ultrasound at 1, 6 and 12 months. Primary endpoints were technical and anatomical success. Secondary endpoints were the need for further treatment of varicose collateral veins by sclerotherapy, outcomes regarding recurrent insufficiency and clinical success. RESULTS A total of 111 great saphenous veins and 23 small saphenous veins were treated with a technical success of 95.6%. The overall anatomical success rates at 1, 6 and 12 month were 96.2%, 88.8% and 84.4%, respectively, without differences between primary and recurrent insufficiency. Deferred sclerotherapy over varicose collaterals was carried out in 28% of the patients with anatomical success. Clinical improvement was achieved in 87.3%. CONCLUSIONS MOCA technique has proven to be an effective technique, although additional treatment over varicose collaterals could be necessary in up to one-third. Atrophy of the saphenous vein and the lack of persistent varicose collateral veins during follow-up seem to be indicators of successful therapy.
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Affiliation(s)
- Vicente Mosquera-Rey
- Department of Angiology and Vascular Surgery, Hospital Universitario Central de Asturias (HUCA), Oviedo, Spain
| | - José A Del Castro Madrazo
- Department of Angiology and Vascular Surgery, Hospital Universitario Central de Asturias (HUCA), Oviedo, Spain
| | - María Ángeles M Herrero
- Department of Angiology and Vascular Surgery, Hospital Universitario Central de Asturias (HUCA), Oviedo, Spain
| | - Rubén A Cordeu
- Department of Angiology and Vascular Surgery, Hospital Universitario Central de Asturias (HUCA), Oviedo, Spain
| | - Ernesto A Azofra
- Department of Angiology and Vascular Surgery, Hospital Universitario Central de Asturias (HUCA), Oviedo, Spain
| | - Manuel A Pérez
- Department of Angiology and Vascular Surgery, Hospital Universitario Central de Asturias (HUCA), Oviedo, Spain
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Jaworucka-Kaczorowska A. NTNT Methods – Efficacy and Safety Issue. PHLEBOLOGIE 2020. [DOI: 10.1055/a-1186-3746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
AbstractThe management of elimination of the pathological reflux in the saphenous vein has been developed recently by introducing the endovenous thermal techniques (EVTA), which have become the first line treatment. However, thermal techniques require tumescent infiltration, what may be the cause of discomfort. Furthermore, the use of EVTA has a potential risk of thermal damage of superficial nerves and requires to wear stocking after the procedure.Non-thermal non-tumescent techniques (NTNT) were proposed as a valid, safe and effective alternative to EVTA with significant clinical improvement, high complete occlusion rate and high posttreatment patient satisfaction. The most common novel NTNT are catheter-directed cyanoacrylate adhesive closure (CAC) and mechanochemical ablation.In the paper an overview of the currently available data regarding the NTNT efficacy and safety are presented.Based on the literature, NTNT has a high efficacy, comparable with the EVTA techniques, with an acceptable risk increase. However further studies with long-term results are needed also with regard to safety aspects.
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Nugroho J, Wardhana A, Ghea C. Mechanical Occlusion Chemically Assisted Ablation (MOCA) for Saphenous Vein Insufficiency: A Meta-Analysis of a Randomized Trial. Int J Vasc Med 2020; 2020:8758905. [PMID: 32411472 PMCID: PMC7204279 DOI: 10.1155/2020/8758905] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2019] [Revised: 12/24/2019] [Accepted: 01/13/2020] [Indexed: 12/03/2022] Open
Abstract
PURPOSE A previous meta-analysis has conducted nonrandomized trials for mechanochemical ablation (MOCA). Since medium-term follow-up data from randomized clinical trials (RCTs) are becoming available, we chose to perform a meta-analysis of RCTs to assess the efficacy and safety of MOCA for saphenous vein insufficiency. METHODS A systematic search of all RCTs comparing the anatomical success of MOCA for saphenous vein insufficiency to thermal ablation was performed using the PubMed and Cochrane Library databases. We employed the Mantel-Haenszel random-effects meta-analysis of outcomes using RevMan 5.3. RESULTS Four studies (615 patients) were included in this meta-analysis. The MOCA group had 93.4% and 84.5%, whereas the thermal ablation group had 95.8% and 94.8% of anatomical success rate at 1 month (short-term) and a period of more than 6 months but less than 1-year follow-up (mid-term), respectively. According to intention-to-treat analysis, there were similar anatomical successes in MOCA and thermal ablation groups at the short-term follow-up (low-quality evidence; relative risk (RR) = 0.98 (95% CI, 0.94-1.03); P = 0.44; I 2 = 53%). The estimated effect of MOCA on anatomical success showed a statistically significant reduction at the mid-term follow-up (moderate-quality evidence; RR = 0.89 (95% CI, 0.84-0.95); P = 0.0002; I 2 = 0%). MOCA had fewer incidence of nerve injury, deep vein thrombosis, and skin burns compared to the thermal ablation procedure (low-quality evidence; RR = 0.33 (95% CI, 0.09-1.28); P = 0.11; I 2 = 0%). CONCLUSION MOCA offered fewer major complications but lesser anatomical success at the period of more than 6 months but less than 1-year follow-up than thermal ablation. Trial Registration. This trial is registered with UMIN Clinical Trial Registry (UMIN ID 000036727).
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Affiliation(s)
- Johanes Nugroho
- Department of Cardiology and Vascular Medicine, Faculty of Medicine, Universitas Airlangga, Surabaya, Indonesia
- Dr. Soetomo General Hospital, Surabaya, Indonesia
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Mohamed AH, Leung C, Wallace T, Pymer S, Harwood A, Smith G, Carradice D, Chetter IC. Mechanochemical ablation for the treatment of superficial venous incompetence: A cohort study of a single centre's early experience. Phlebology 2018; 34:466-473. [PMID: 30595100 DOI: 10.1177/0268355518818339] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Background Mechanochemical ablation is an innovative non-thermal method of treating symptomatic axial superficial venous incompetence. This is a single-centre cohort study aiming to investigate the technical efficacy and clinical effectiveness at one year. Methods Patients with primary, unilateral, symptomatic axial incompetence were offered treatment with mechanochemical ablation using ClariVein® with 1.5% sodium tetradecyl sulphate. Assessments including clinical examination, duplex ultrasound and patient-reported health-related quality of life were performed at baseline and weeks 1, 6, 26 and 52. Results Thirty-two patients were recruited to the study. Complete target vein occlusion at one year was found in 21 (75%) patients. Six patients (21.4%) required secondary procedures, of which three had axial endovenous thermal ablation and three required ambulatory phlebectomy with perforator ligation. There was a significant improvement in the median (interquartile range) Venous Clinical Severity Score from baseline 6 (5–8) to a score of 1 (0–2) at one year (p < 0.001). There was also a significant improvement in health-related quality of life, both generic (p = 0.001) and disease specific (p < 0.001). One patient (3.1%) had a post-procedural non-fatal pulmonary embolus. Conclusions Mechanochemical ablation is a feasible and effective treatment for superficial venous incompetence. When using consensus definitions for anatomical closure, results for mechanochemical ablation may be less favourable than previously reported. Further studies are required to compare clinical and technical outcomes following mechanochemical ablation to other methods of endovenous ablation.
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Affiliation(s)
- Abduraheem H Mohamed
- Hull York Medical School, Academic Vascular Surgical Unit, Alderson House, Hull Royal Infirmary, Hull, UK
| | - Clement Leung
- Hull York Medical School, Academic Vascular Surgical Unit, Alderson House, Hull Royal Infirmary, Hull, UK
| | - Tom Wallace
- Hull York Medical School, Academic Vascular Surgical Unit, Alderson House, Hull Royal Infirmary, Hull, UK
| | - Sean Pymer
- Hull York Medical School, Academic Vascular Surgical Unit, Alderson House, Hull Royal Infirmary, Hull, UK
| | - Amy Harwood
- Hull York Medical School, Academic Vascular Surgical Unit, Alderson House, Hull Royal Infirmary, Hull, UK
| | - George Smith
- Hull York Medical School, Academic Vascular Surgical Unit, Alderson House, Hull Royal Infirmary, Hull, UK
| | - Daniel Carradice
- Hull York Medical School, Academic Vascular Surgical Unit, Alderson House, Hull Royal Infirmary, Hull, UK
| | - Ian C Chetter
- Hull York Medical School, Academic Vascular Surgical Unit, Alderson House, Hull Royal Infirmary, Hull, UK
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Abstract
SummaryIn mechano-chemical ablation (MOCA) the vein to be treated is not heated but is occluded with a combination of mechanical and chemical techniques. No anaesthesia is required as access to the vein is through an 18G vein cannula, and there is no danger of nerve lesions as the technique is heat-free. MOCA is therefore particularly suitable for treating the small saphenous vein (SSV).
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13
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Ablación mecánico-química de la vena safena con el catéter ClariVein ® (MOCA): aspectos técnicos y revisión de la literatura. ANGIOLOGIA 2018. [DOI: 10.1016/j.angio.2017.10.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Witte ME, Zeebregts CJ, de Borst GJ, Reijnen M, Boersma D. Reply to: Letter to Editor re: "Mechanochemical endovenous ablation of saphenous veins using the ClariVein: A systematic review" - MOCA data reporting needs to be tighter and standardized! Phlebology 2017; 32:682-683. [PMID: 28971733 DOI: 10.1177/0268355517734953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Marianne E Witte
- 1 Department of Surgery, 1322 Rijnstate Hospital, Arnhem, The Netherlands
| | - Clark J Zeebregts
- 2 Department of Surgery (Division of Vascular Surgery), University Medical Center, University of Groningen, Groningen, The Netherlands
| | - Gert Jan de Borst
- 3 Department of Vascular Surgery, 8124 University Medical Center, Utrecht , The Netherlands
| | - Michel Reijnen
- 1 Department of Surgery, 1322 Rijnstate Hospital, Arnhem, The Netherlands
| | - Doeke Boersma
- 3 Department of Vascular Surgery, 8124 University Medical Center, Utrecht , The Netherlands.,4 Department of Surgery, Jeroen Bosch Hospital, 's-Hertogenbosch, The Netherlands
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Sun JJ, Chowdhury MM, Sadat U, Hayes PD, Tang TY. Mechanochemical Ablation for Treatment of Truncal Venous Insufficiency: A Review of the Current Literature. J Vasc Interv Radiol 2017; 28:1422-1431. [PMID: 28811080 DOI: 10.1016/j.jvir.2017.07.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Revised: 07/03/2017] [Accepted: 07/04/2017] [Indexed: 10/19/2022] Open
Abstract
Mechanochemical ablation (MOCA) is a nonthermal nontumescent technique used in the treatment of superficial venous disease. This review analyzed the available data on the efficacy and safety of MOCA. A systematic literature search was performed. Of 101 studies identified, 14 were suitable for inclusion. The studies were found to be heterogeneous in design, and the quality of evidence was found to be low or very low. MOCA was demonstrated to be effective in the short-term with minimal complications. Consensus guidelines and definitions of reporting outcome measures must be standardized to allow comparison with other techniques.
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Affiliation(s)
- James J Sun
- Cambridge Vascular Unit, Cambridge University Hospitals NHS Foundation Trust, Cambridge, United Kingdom
| | - Mohammed M Chowdhury
- Cambridge Vascular Unit, Cambridge University Hospitals NHS Foundation Trust, Cambridge, United Kingdom
| | - Umar Sadat
- Cambridge Vascular Unit, Cambridge University Hospitals NHS Foundation Trust, Cambridge, United Kingdom
| | - Paul D Hayes
- Cambridge Vascular Unit, Cambridge University Hospitals NHS Foundation Trust, Cambridge, United Kingdom
| | - Tjun Y Tang
- Vascular Service, Department of General Surgery, Changi General Hospital, 2 Simei Street, Singapore 529889, Singapore.
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Saravana K, Tang TY. Letter to Editor re: 'Mechanochemical endovenous ablation of saphenous veins using the ClariVein: A systematic review' - MOCA data reporting needs to be tighter and standardized! Phlebology 2017; 32:679-681. [PMID: 28764596 DOI: 10.1177/0268355517724618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- K Saravana
- 1 Vascular Surgery, Kuala Lumpur General Hospital, Kuala Lumpur, Malaysia
| | - T Y Tang
- 2 Vascular Service, Changi General Hospital, Singapore, Singapore
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17
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Vos CG, Ünlü Ç, Bosma J, van Vlijmen CJ, de Nie AJ, Schreve MA. A systematic review and meta-analysis of two novel techniques of nonthermal endovenous ablation of the great saphenous vein. J Vasc Surg Venous Lymphat Disord 2017; 5:880-896. [PMID: 29037363 DOI: 10.1016/j.jvsv.2017.05.022] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2017] [Accepted: 05/28/2017] [Indexed: 11/19/2022]
Abstract
BACKGROUND Endothermal treatment of the great saphenous vein (GSV) has become the first-line treatment for superficial venous reflux. Nonthermal ablation has potential benefits for acceptability by patients and decreased risk of nerve injury. We performed a systematic review and meta-analysis to evaluate the efficacy of mechanochemical endovenous ablation (MOCA) and cyanoacrylate vein ablation (CAVA) for GSV incompetence. METHODS MEDLINE, Embase, Cumulative Index to Nursing and Allied Health Literature, and Cochrane databases were searched for papers published between January 1966 and December 2016. Eligible articles were prospective studies that included patients treated for GSV incompetence and described the primary outcome. Exclusion criteria were full text not available, case reports, retrospective studies, small series (n < 10), reviews, abstracts, animal studies, studies of small saphenous vein incompetence, and recurrent GSV incompetence. Primary outcome was anatomic success. Secondary outcomes were initial technical success, Venous Clinical Severity Score, Aberdeen Varicose Vein Questionnaire score, and complications. RESULTS Fifteen articles met the inclusion criteria. Pooled anatomic success for MOCA and CAVA was 94.7% and 94.8% at 6 months and 94.1% and 89.0% at 1 year, respectively. Venous Clinical Severity Score and Aberdeen Varicose Vein Questionnaire score significantly improved after treatment with MOCA and CAVA. CONCLUSIONS These results are promising for these novel techniques that could serve as alternatives for thermal ablation techniques. However, to determine their exact role in clinical practice, high-quality randomized controlled trials comparing these novel modalities with well-established techniques are required.
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Affiliation(s)
- Cornelis G Vos
- Department of Surgery, Northwest Clinics, Alkmaar, The Netherlands.
| | - Çağdaş Ünlü
- Department of Surgery, Northwest Clinics, Alkmaar, The Netherlands
| | - Jan Bosma
- Department of Surgery, Onze Lieve Vrouwe Gasthuis, Amsterdam, The Netherlands
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18
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Kugler NW, Brown KR. An update on the currently available nonthermal ablative options in the management of superficial venous disease. J Vasc Surg Venous Lymphat Disord 2017; 5:422-429. [DOI: 10.1016/j.jvsv.2017.01.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Accepted: 01/28/2017] [Indexed: 11/25/2022]
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Witte ME, Zeebregts CJ, de Borst GJ, Reijnen MMPJ, Boersma D. Mechanochemical endovenous ablation of saphenous veins using the ClariVein: A systematic review. Phlebology 2017; 32:649-657. [PMID: 28403687 DOI: 10.1177/0268355517702068] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Objective To systematically review all available English literature on mechanochemical endovenous ablation and to report on the anatomical, technical, and clinical success. Methods A systematic literature search was performed in PubMed, EMBASE, and the Cochrane Library on mechanochemical endovenous ablation for the treatment of insufficient great and/or small saphenous vein. Methodological quality of the included studies was evaluated using the MINORS score. The primary outcome measure was anatomical success, defined as closure of the treated vein on follow-up duplex ultrasound imaging. Secondary outcomes were technical and clinical success, and major complications defined as deep venous thrombosis, pulmonary embolisms or paresthesia. Results The literature search identified 759 records, of which 13 were included, describing 10 unique cohorts. A total of 1521 veins (1267 great saphenous vein and 254 small saphenous vein) were included, with cohort sizes ranging from 30 to 570 veins. The pooled anatomical success rate after short-term follow up was 92% (95% CI 90-94%) ( n = 1314 veins). After 6 and 12 months these numbers were 92% (95% CI 88-95%) ( n = 284) and 91% (95% CI 86-94%) ( n = 228), respectively. The long-term anatomical success rates at 2 and 3 years were 91% (95% CI 85-95%) ( n = 136) and 87% (95% CI 75-94%) ( n = 48), respectively. Major complications and especially nerve injury were very rare (≤ 0.2%). All studies were of moderate or good quality using the MINORS scoring scale. Conclusions Mechanochemical endovenous ablation using the ClariVein in combination with liquid sclerosant is associated with an anatomical success rate ranging from 87% to 92% and good clinical success. To date, no randomized controlled trials are available studying the anatomical success after mechanochemical ablation, compared to the endothermal ablation. The risk of major complications is very low after the procedure.
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Affiliation(s)
- Marianne E Witte
- 1 Department of Surgery, Rijnstate Hospital, Arnhem, The Netherlands
| | - Clark J Zeebregts
- 2 Department of Surgery (Division of Vascular Surgery), University Medical Center, University of Groningen, Groningen, The Netherlands
| | - Gert Jan de Borst
- 3 Department of Vascular Surgery, University Medical Center, Utrecht, The Netherlands
| | | | - Doeke Boersma
- 3 Department of Vascular Surgery, University Medical Center, Utrecht, The Netherlands.,4 Department of Surgery, Jeroen Bosch Hospital, 's-Hertogenbosch, The Netherlands
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Boersma D, van Haelst S, van Eekeren R, Vink A, Reijnen M, de Vries J, de Borst G. Macroscopic and Histologic Analysis of Vessel Wall Reaction After Mechanochemical Endovenous Ablation Using the ClariVein OC Device in an Animal Model. Eur J Vasc Endovasc Surg 2017; 53:290-298. [DOI: 10.1016/j.ejvs.2016.11.024] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Accepted: 11/25/2016] [Indexed: 01/17/2023]
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Tang TY. Commentary: ClariVein: MOCA's Midterm Report--Still the Flavor of the Month or a Sustainable Trend? J Endovasc Ther 2016; 24:156-158. [PMID: 27742901 DOI: 10.1177/1526602816674573] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Tjun Y Tang
- 1 Vascular Service, Changi General Hospital, Singapore
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22
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Tang TY, Kam JW, Gaunt ME. ClariVein® - Early results from a large single-centre series of mechanochemical endovenous ablation for varicose veins. Phlebology 2016; 32:6-12. [PMID: 26908638 PMCID: PMC5302071 DOI: 10.1177/0268355516630154] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Objectives This study assessed the effectiveness and patient experience of the ClariVein® endovenous occlusion catheter for varicose veins from a large single-centre series in the UK. Methods A total of 300 patients (371 legs) underwent ClariVein® treatment for their varicose veins; 184 for great saphenous vein (GSV) incompetence, 62 bilateral GSV, 23 short saphenous vein (SSV), 6 bilateral SSV and 25 combined unilateral great saphenous vein and SSV. Patients were reviewed at an interval of two months post procedure and underwent Duplex ultrasound assessment. Postoperative complications were recorded along with patient satisfaction. Results All 393 procedures were completed successfully under local anaesthetic. Complete occlusion of the treated vein was initially achieved in all the patients, but at eight weeks’ follow-up, there was only partial obliteration in 13/393 (3.3%) veins. These were all successfully treated with ultrasound-guided foam sclerotherapy. Procedures were well tolerated with a mean pain score of 0.8 (0–10). No significant complications were reported. Conclusions ClariVein® can be used to ablate long and short saphenous varicose veins on a walk-in–walk-out basis. Bilateral procedures can be successfully performed, and these are well tolerated as can multiple veins in the same leg. Early results are promising but further evaluation and longer term follow-up are required.
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Affiliation(s)
- T Y Tang
- 1 Vascular Unit, Changi General Hospital, Singapore, Singapore
| | - J W Kam
- 2 Clinical Trials & Research Unit, Changi General Hospital, Singapore, Singapore
| | - M E Gaunt
- 3 Spire Cambridge Lea Hospital, Cambridge, UK
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Tang TY, Kam JW, Gaunt ME. ClariVein® - Early results from a large single-centre series of mechanochemical endovenous ablation for varicose veins. Phlebology 2016. [PMID: 26908638 DOI: 10.1177/0268355516630154.] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Objectives This study assessed the effectiveness and patient experience of the ClariVein® endovenous occlusion catheter for varicose veins from a large single-centre series in the UK. Methods A total of 300 patients (371 legs) underwent ClariVein® treatment for their varicose veins; 184 for great saphenous vein (GSV) incompetence, 62 bilateral GSV, 23 short saphenous vein (SSV), 6 bilateral SSV and 25 combined unilateral great saphenous vein and SSV. Patients were reviewed at an interval of two months post procedure and underwent Duplex ultrasound assessment. Postoperative complications were recorded along with patient satisfaction. Results All 393 procedures were completed successfully under local anaesthetic. Complete occlusion of the treated vein was initially achieved in all the patients, but at eight weeks' follow-up, there was only partial obliteration in 13/393 (3.3%) veins. These were all successfully treated with ultrasound-guided foam sclerotherapy. Procedures were well tolerated with a mean pain score of 0.8 (0-10). No significant complications were reported. Conclusions ClariVein® can be used to ablate long and short saphenous varicose veins on a walk-in-walk-out basis. Bilateral procedures can be successfully performed, and these are well tolerated as can multiple veins in the same leg. Early results are promising but further evaluation and longer term follow-up are required.
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Affiliation(s)
- T Y Tang
- 1 Vascular Unit, Changi General Hospital, Singapore, Singapore
| | - J W Kam
- 2 Clinical Trials & Research Unit, Changi General Hospital, Singapore, Singapore
| | - M E Gaunt
- 3 Spire Cambridge Lea Hospital, Cambridge, UK
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