Endovenous Thermal Ablation of Prominent Central Forehead Veins (Supratrochlear Veins).

BACKGROUND: Many patients complain of prominent vertical veins in the center of their forehead, worse when smiling, wrinkling the forehead in bright light, leaning forward, and when vasodilated in heat, when exercising, or with alcohol. Previous attempts to treat these with external laser, sclerotherapy, and phlebectomy have not been successful. OBJECTIVE: To describe a new method of treating prominent vertical forehead veins and to report the early results. MATERIALS AND METHODS: We used endovenous laser ablation with a 1470 nm diode laser in 15 patients (F:M 12:3; mean age 38.4 years range 24-69). A bare fiber was used once and a 400-µm single ring radial fiber (Biolitec, Vienna, Austria) in all other cases. Tumescence was placed around the vein and a power of 2 to 3 W with a pullback of 7 to 10 seconds per centimeter. RESULTS: Twelve of the 15 patients (80%) ended up with a good cosmetic result and were satisfied, although 2 needed redo treatment. One patient had minor skin tethering, and 2 (13%) suffered burns-one was the only bare fiber case and the other, the only one where 4 W was used. CONCLUSION: We present a novel technique to treat prominent vertical forehead veins, with apparently good early results.

Uso do laser de 1. 470 nm para o tratamento de insuficiência venosa superficial / Use of 1, 470 nm laser for treatment of superficial venous insufficiency

Resumo Contexto Existem diversas formas de tratamento de varizes de membros inferiores. Entre elas, destaca-se o uso do laser diodo de 1.470 nm. Essa técnica proporciona aos pacientes uma cirurgia em regime ambulatorial, com retorno precoce à atividade ocupacional, bom resultado estético e baixo índice de complicações. No entanto, ainda se discute exaustivamente variáveis como comprimento de onda do laser, potência aplicada em cada área, tipo de fibra, necessidade ou não de tumescência e densidade de energia endovenosa linear. Objetivos Analisar os resultados do tratamento da insuficiência venosa superficial com laser diodo de 1.470 nm. Métodos Estudo retrospectivo, realizado em uma clínica privada de um hospital privado em Florianópolis a partir de dados colhidos prospectivamente. As amostras eram de 287 pacientes submetidos à cirurgia para tratamento da insuficiência venosa superficial com laser diodo de 1.470 nm, de janeiro de 2016 a dezembro de 2018, totalizando 358 veias safenas magnas e 84 veias safenas parvas tratadas. Resultados A taxa de oclusão total após 12 meses de cirurgia foi de 94,4%, com densidade de energia endovenosa linear média de 45,90 J/cm nas veias safenas magnas e de 96,4% com densidade de energia endovenosa linear média de 44,07 J/cm nas veias safenas parvas. Conclusões No período acompanhado, o laser diodo de 1.470 nm mostrou-se um tratamento seguro, muito efetivo e com baixas taxas de complicações (dor, edema, equimose, trombose venosa profunda e trombose induzida pelo calor endovenoso).

Abstract Background There are several ways to treat varicose veins of the lower limbs, among which use of 1470nm diode lasers stands out. This technique can be used to treat patients in outpatient settings, with early return to work, good esthetic results, and low rates of complications. However, variables such as the laser wavelength, the power administered in each area, the type of fiber, and the linear intravenous energy density (LEED) are still extensively discussed. Objectives To analyze the results of superficial venous insufficiency treatment with a 1470nm diode laser. Methods Retrospective study conducted at a private clinic in a private hospital in Florianopolis, based on a database collected prospectively. The sample comprised 287 patients who underwent surgery to treat superficial venous insufficiency with 1470nm diode laser, from January 2016 to December 2018, totaling 358 great saphenous veins (GSVs) and 84 small saphenous veins (SSVs) treated. Results The total occlusion rates after 12 months of surgery were 94.4% in the GSVs, with an average LEED of 45.90 J/cm, and 96.4% in the SSVs, with an average LEED of 44.07 J/cm. Conclusions During the follow-up period, the 1470nm diode laser proved to be a safe treatment, with great efficacy and low rates of complications (pain, edema, bruising, deep vein thrombosis, and endothermal heat-induced thrombosis - EHIT).

Excimer Laser Coronary Angioplasty (ELCA): Fundamentals, Mechanism of Action, and Clinical Applications.

Laser coronary angioplasty was developed to modify atherosclerotic plaque and help with the acute and longer-term limitations of balloon angioplasty, namely, intimal dissection and restenosis, respectively. Excimer laser debulks and modifies the tissue with its photochemical, photothermal, and photokinetic properties without causing significant injury. With important refinements and advancements, laser has gained a renewed place in treating complex and resistant coronary lesions after a disappointing start. When used in line with the instructions, laser is an important tool that allows the completion of difficult and complicated cases. It is a useful tool in the catheterization laboratory to treat lesions that are uncrossable or undilatable. Laser is also helpful in cases where a stent was deployed but remains under-expanded, with accumulating evidence of its efficacy in such cases. In addition, laser is increasingly used for chronic total occlusion (CTO) percutaneous coronary intervention (PCI) to facilitate modification of the proximal CTO cap to allow penetration with a wire and completion of the procedure. Laser has been used in certain circumstances by experienced operators with simultaneous contrast rather than saline injection, to increase its effect and allow the successful completion of complex PCIs. This article outlines the scientific background, experimental data, practical procedural techniques, and clinical applications of excimer laser coronary angioplasty in the treatment of coronary artery disease.

Laser angioplasty of peripheral arteries: basic principles, current clinical studies, and future directions.

Percutaneous transluminal angioplasty (PTA) is a routine procedure for the treatment of peripheral arterial disease. However, its main limitation is late restenosis occurring at a 1-year rate of 6%-60%. Restenosis arises from injury to the arterial wall including overstretching, compression and rupture of the atherosclerotic plaque during balloon inflation. It is hypothesized that better long-term angioplasty results are observed if atherosclerotic plaques are removed rather than compressed and fractured. Laser angioplasty is one method to remove atherosclerotic plaques. We discuss the principles of lasers, physical properties of laser light, history of laser angioplasty and effects of laser radiation on tissues. Large clinical studies using laser angioplasty are critically assessed. In comparison to conventional PTA, there are some advantages of laser angioplasty: easier passage through chronic and calcified occlusions and according to some studies, better short- and medium-term results regarding limb salvage and management of in-stent restenoses.

Endovenous ablation.

Varicose vein surgery is among the most commonly performed surgical interventions. The standard treatment 'high ligation and stripping' has in many countries been replaced by endovenous techniques. However, there are many different techniques available. All have a different way of action and sometimes need different skills. The purpose of this review article is to give an update in those different endovenous ablation techniques. We describe the indications, technique, mechanisms of action, and results. We conclude that all different techniques can be used safely and are effective. Even on long term there seems to be no difference in outcome, even compared to high ligation and stripping.

Five-year follow-up of a randomized clinical trial comparing open surgery, foam sclerotherapy and endovenous laser ablation for great saphenous varicose veins.

BACKGROUND: New treatment methods have challenged open surgery as a treatment for great saphenous vein (GSV) insufficiency, the most common being ultrasound-guided foam sclerotherapy (UGFS) and endovenous laser ablation (EVLA). This study evaluated the long-term results of surgery, EVLA and UGFS in the treatment of GSV reflux. METHODS: Patients with symptomatic GSV reflux were randomized to undergo either open surgery, EVLA or UGFS. The main outcome measure was the occlusion rate of the GSV at 5 years after operation. RESULTS: The study included 196 patients treated during 2008-2010; of these, 166 (84·7 per cent) participated in the 5-year follow-up. At 5 years, the GSV occlusion rate was 96 (95 per cent c.i. 91 to 100) per cent in the open surgery group, 89 (82 to 98) per cent after EVLA and 51 (38 to 64) per cent after UGFS (P < 0·001). For patients who had received no additional treatment during follow-up, the occlusion rates were 96 per cent (46 of 48), 89 per cent (51 of 57) and 41 per cent (16 of 39) respectively. UGFS without further GSV treatment was successful in only 16 of 59 patients (27 per cent) at 5 years. CONCLUSION: UGFS has significantly inferior occlusion rates compared with open surgery or EVLA, and results in additional treatments.

Synergistic ELCA-aspiration-DES thrombus removal strategy-embolus impact in high-risk plaque: A case report.

RATIONALE: Thin-cap fibroatheroma (TCFA) and red thrombus are suggested as a high-risk of embolic complications during percutaneous coronary intervention (PCI). Intracoronary aspiration procedures occasionally result in either an insufficient thrombus removal or provide no significant effects on TCFA. PATIENT CONCERNS: A 76-year-old male underwent coronary angiography for chest pain. DIAGNOSES: Coronary angiography revealed a tight stenosis at the right coronary artery which resulted in treatment by PCI. Optical frequency domain imaging (OFDI) delineated a red thrombus with TCFA. INTERVENTIONS: To avoid embolic complications, excimer laser coronary angioplasty (ELCA) was applied with intracoronary aspiration before drug-eluting stent (DES) implantation. OUTCOMES: The red thrombus was vaporized by ELCA in an energy-intensity dependent manner and subsequently removed by intracoronary aspiration. The fibrous cap of TCFA was dissected with the material beneath the cap ablated by ELCA and extensively removed by intracoronary aspiration. DES implantation and postdilatation achieved an optimal result without flow compromise. This combined synergistic strategy of ELCA-aspiration-DES yielded a successful outcome. LESSONS: A synergistic embolus removal strategy combining ELCA, aspiration and DES implantation is a promising option for the treatment of high-risk plaque with potential embolic complications.

Tratamiento primario con láser diodo en malformación venosa cervical de gran tamaño / Laser diode treatment of a giant lateral-neck venous malformation

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Estado actual de las técnicas endoablativas en el tratamiento de la insuficiencia venosa superficial / Update of endovenous ablation techniques in the treatment of superficial venous insufficiency

Desde hace unos 25 años, las técnicas endovasculares han ido adquiriendo mayor importancia en el tratamiento de las varices secundarias a insuficiencia de ejes safenos. Podemos clasificarlas en 2 grupos: 1. Endoablación térmica, las primeras en aparecer, que emplean calor como mecanismo de la ablación. Incluimos en este grupo el endoláser, la radiofrecuencia y el vapor de agua. 2. Endoablación química o mixta, más novedosas que las anteriores salvo la escleroterapia, y que se caracterizan además porque pueden evitar el quirófano propiamente dicho. En este grupo, además de la escleroterapia ecoguiada, incluimos la ablación mecánico-química MOCA y el sellado con adhesivo cianoacrilato. En este trabajo de revisión, analizamos el estado actual de cada una de ellas, basándonos en la bibliografía y en la experiencia personal del grupo

Endovascular procedures have gained importance in the treatment of varicose veins secondary to saphenous vein reflux over the last 25 years. There are two types of endovascular techniques: 1. Endothermal ablation (which includes endolaser), radiofrequency, and steam ablation. All of them use heat to achieve the occlusion of the vein. 2. Chemical or mixed ablation, of late appearance except sclerotherapy, characterised due to the fact that they do not need a traditional operating room to be performed. This group includes ultrasound-guided sclerotherapy with foam, mechanical-chemical ablation, and cyanoacrylate glue. The aim of this work is to present our personal experience and the most current bibliographic review, in order to compare these techniques

Efectos de la aterectomía con láser valorados con OCT / Effects of excimer laser coronary atherectomy assessed by OCT

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Malformación glomovenosa congénita en placas: 11 años de seguimiento y respuesta al tratamiento con láser combinado PDL/Nd: YAG / Congenital plaque-type glomuvenous malformation: 11 years of follow-up and response to treatment with the combined Pulsed-Dye and Neodymium: Yttrium-Aluminum-Garnet Laser

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Endovenous laser ablation of the great saphenous vein - Varying energy may not affect outcome.

Objectives To determine great saphenous vein occlusion rate after endovenous laser ablation using the 1470-nm bare-fiber diode laser to supply either 7 W or 15 W and evaluate procedure-related complications. Method Patients with varicose veins of the lower extremities (CEAP class C2-C6) were randomly assigned to undergo either 7-W (18 patients, 30 limbs) or 15-W (18 patients, 30 limbs) endovenous laser ablation. Duplex ultrasound follow-up was at 3-5 days, 1, 6, and 12 months postoperatively. Results Occlusion rate was 100% in both groups at 3-5 days and 1 month and 86.7% in 7-W and 100% in 15-W patients at both 6 and 12 months, with no difference between groups ( p > 0.05). Four (13.3%) 15-W and 3 (10%) 7-W patients had paresthesia at 3-5 days, with no difference between groups ( p > 0.05). Conclusions These preliminary data suggest that both techniques are similarly effective in the treatment of varicose great saphenous veins.

A prospective comparison of a new cyanoacrylate glue and laser ablation for the treatment of venous insufficiency.

INTRODUCTION: Cyanoacrylate ablation is the newest nonthermal vein ablation technique. The one-year results of a prospective comparative study of a new cyanoacrylate glue versus endovenous laser ablation for the treatment of venous insufficiency is presented. MATERIAL AND METHODS: A total of 310 adult subjects were treated with cyanoacrylate ablation or endovenous laser ablation. The primary endpoint of this study was complete occlusion of the great saphenous vein. Secondary endpoints were procedure time, procedural pain, ecchymosis at day 3, adverse events, changes from baseline in Venous Clinical Severity Score, and Aberdeen Varicose Vein Questionnaire. RESULTS: Operative time was shorter (15 ± 2.5 versus 33.2 ± 5.7, <0.001), and periprocedural pain was less (3.1 ± 1.6 versus 6.5 ± 2.3, <0.001) in cyanoacrylate ablation group compared to the endovenous laser ablation group. Ecchymosis at the third day was also significantly less in cyanoacrylate ablation group (<0.001). Temporary or permanent paresthesia developed in seven patients in endovenous laser ablation group and none in cyanoacrylate ablation group (p = 0.015). One, three, and 12 months closure rates were 87.1, 91.7, and 92.2% for endovenous laser ablation and 96.7, 96.6, and 95.8% for cyanoacrylate ablation groups. Closure rate at first month was significantly better in cyanoacrylate ablation group (<0.001). Although there is a trend of better closure rates in cyanoacrylate ablation patients, this difference did not reach to the statistical difference at sixth and 12th month (p = 0.127 and 0.138, respectively). Both groups had significant improvement in Venous Clinical Severity Score and Aberdeen Varicose Vein Questionnaire postoperatively (<0.001), but there was no significant difference in Venous Clinical Severity Score and Aberdeen Varicose Vein Questionnaire scores between the groups at first, sixth, and 12 months. Only a slightly better well-being trend was noted in cyanoacrylate ablation group in terms of Aberdeen Varicose Vein Questionnaire scores (p = 0.062). CONCLUSIONS: The efficacy and safety analysis shows that cyanoacrylate ablation is a safe, simple method which can be recommended as an effective endovenous ablation technique. The follow-up data more than one year will clarify the future role of cyanoacrylate ablation for the treatment incompetent great saphenous veins.

Compression regimes after endovenous ablation for superficial venous insufficiency--A survey of members of the Vascular Society of Great Britain and Ireland.

INTRODUCTION: The optimal compression regime following ultrasound guided foam sclerotherapy (UGFS), radiofrequency ablation (RFA) and endovenous laser ablation (EVLA) for varicose veins is not known. The aim of this study was to document current practice. METHODS: Postal questionnaire sent to 348 consultant members of the Vascular Society of Great Britain and Ireland. RESULTS: Valid replies were received from 41% (n = 141) surgeons representing at least 68 (61%) vascular units. UGFS was used by 74% surgeons, RFA by 70% and EVLA by 32%, but fewer patients received UGFS (median 30) annually, than endothermal treatment (median 50)--P = 0.019. All surgeons prescribed compression: following UGFS for median seven days (range two days to three months) and after endothermal ablation for 10 days (range two days to six weeks)--P = 0.298. Seven different combinations of bandages, pads and compression stockings were reported following UGFS and four after endothermal ablation. Some surgeons advised changing from bandages to stockings from five days (range 1­14) after UGFS. Following endothermal ablation, 71% used bandages only, followed by compression stockings after two days (range 1­14). The majority of surgeons (87%) also treated varicose tributaries: 65% used phlebectomy, the majority (65%) synchronously with endothermal ablation. Concordance of compression regimes between surgeons within vascular units was uncommon. Only seven units using UGFS and six units using endothermal ablation had consistent compression regimes. CONCLUSION: Compression regimes after treatments for varicose veins vary significantly: more evidence is needed to guide practice.

Endovenous laser ablation with and without high ligation compared to high ligation and stripping for treatment of great saphenous varicose veins: Results of a multicentre randomised controlled trial with up to 6 years follow-up.

OBJECTIVES: High ligation and stripping was compared to endovenous laser ablation for the therapy of great saphenous vein varicosity. Long-term efficacy was assessed in terms of avoidance of inguinal reflux and mechanisms of recurrence were investigated. DESIGN: Multicentre, randomised, three-arm, parallel trial. MATERIALS AND METHODS: A total of 449 patients were randomised into three different treatment groups: high ligation and stripping group (n = 159), endovenous laser ablation group (n = 142; 980 nm, 30 W continuous mode, bare fibre) or a combination of laser ablation with high ligation (endovenous laser ablation group/ high ligation group, n = 148). Patients were examined clinically and by duplex ultrasound once a year.The primary end point of this study is inguinal reflux at the saphenofemoral junction after 2 years. This paper presents secondary data on sonographically determined inguinal reflux and clinical recurrences in the treated area after up to 6 years of follow-up. RESULTS: Median time to follow-up was 4.0 years; the mean time follow-up 3.6 years. Follow-up rates were: 2 years 74%, 3 years 47%, 4 years 39%, 5 years 36% and 6 years 31%. Most reflux into the great saphenous vein appeared in the endovenous laser ablation group (after 6 years: high ligation/stripping versus endovenous laser ablation p = 0.0102; high ligation/endovenous laser ablation vs. endovenous laser ablation p < 0.0002). Furthermore, more refluxive side branches were also observed in the endovenous laser ablation group (after 6 years high ligation/stripping vs. endovenous laser ablation p = 0.0569; high ligation/endovenous laser ablation vs. endovenous laser ablation p = 0.0111). In terms of clinical recurrence during the 6 years post therapy, no significant differences between the three treatment groups were observed (p values from log-rank test: high ligation/stripping vs. endovenous laser ablation p = 0.5479; high ligation/stripping vs. high ligation/endovenous laser ablation p = 0.2324; high ligation/endovenous laser ablation vs. endovenous laser ablation p = 0.0848).The postoperative decline and later development in Class C (clinical etiological anatomical pathological) went parallel in all groups. CONCLUSIONS: Clinical recurrence appears with the same frequency in all three treatment groups, but the responsible pathological mechanisms seem to differ. Most reflux into the great saphenous vein and side branches appears after endovenous laser ablation, whereas more saphenofemoral junction-independent recurrences are seen after high ligation/stripping.

[EFFICACY OF SURGICAL TREATMENT OF VARICOSE DISEASE, DEPENDING ON ADSORPTION-RHEOLOGIC PROPERTIES OF BLOOD].

Physico-chemical adsorption-rheological properties of venous blood in patients, suffering varicose disease of the lower extremities, and their impact on efficacy of various methods of surgical treatment were studied. Conduction of endovasal laser coagulation in combination with crossectomy have promoted enhancement of operative treatment efficacy in patients in initial terms of observation (in 1 week), in 1 month a complete occlusion of the vein was noted more rarely. Efficacy of a small--power laser ablation with irradiation power of 10 W and less in 4 weeks postoperatively is higher, than of surgical treatment with a laser irradiation power 15 W. In a varicose disease of the lower extremities there were observed the raising of the blood volume toughness, superficial relaxation and superficial stress on background of reduction of the toughness--elasticity module, superficial toughness and superficial elasticity. Crossectomy conduction did not influence the integral dynamics of adsorption--rheological properties of venous blood, but in 1 month after endovasal laser coagulation a normalization of physicchemical parameters of blood was noted. Application of laser irradiation of the 10 W power and less promotes inhibition of the relaxation properties of venous blood; a prognostic meaning owes initial value of the blood volume toughness.

Endovenous laser ablation in patients with wide diameter of the proximal segment of the great saphenous vein: Comparison of methods.

OBJECTIVE: To estimate the safety and efficacy of using the laser 1560 nm wavelength for treatment of chronic venous disease in patients with wide diameters of the proximal segment of the great saphenous vein. METHODS: In the study 88 patients with lower limb varicose veins were included. Maximum diameter of the great saphenous vein proximal segment varied from 15 to 34 mm (22 ± 2.3) in all patients. In the 1st group in 34 cases crossektomy and endovenous laser ablation (EVLA) were performed. In the 2nd group in 30 cases EVLA regardless diameter of the great saphenous vein proximal segment was performed. In the 3rd group in 34 cases EVLA taking into account the diameter of the great saphenous vein proximal segment was performed. The laser 1560 nm wavelength was used. Linear endovenous energy density in the 1st and 2nd groups was 90 J/cm for the proximal segment and trunk of great saphenous vein. Linear endovenous energy density in the 3rd group was personalized on the size of the veins: 100 J/cm for diameter of great saphenous vein proximal segment 15-20 mm, 150 J/cm for diameter 20-30 mm, 90 J/cm for middle and distal segments of great saphenous vein. RESULTS: In the 1st group obliteration of the trunk of the great saphenous veins and accessory great saphenous veins in all cases without additional interventions was reached. In the 2nd group at four cases (13.3%) the second procedure EVLA was carried out, after which the obliteration of the trunk was achieved. In the 3rd group the obliteration of the trunk of great saphenous vein was achieved without additional interventions. CONCLUSION: Our experience of using the laser 1560 nm wavelength for the treatment of the chronic venous disease in patients with wide diameter of the proximal segment of great saphenous vein shows the safety and efficacy of this technique.EVLA has to be personalized on the size of the segments of vein in patients with wide proximal segment of great saphenous vein.

Histological difference between pulsed wave laser and continuous wave laser in endovenous laser ablation.

BACKGROUND: Endovenous laser ablation to saphenous veins has been popular as a minimally invasive treatment for chronic venous insufficiency. However, adverse effects after endovenous laser ablation using continuous wave laser still remain. Pulsed wave with enough short pulse duration and sufficiently long thermal relaxation time may avoid the excess energy delivery, which leads to the perforation of the vein wall. METHOD: (1) Free radiation: Laser is radiated in blood for 10 s. (2) Endovenous laser ablation: Veins were filled with blood and placed in saline. Endovenous laser ablations were performed. RESULTS: (1) There were clots on the fiber tips with continuous wave laser while no clots with pulsed wave laser. (2) In 980-nm continuous wave, four of 15 specimens had ulcers and 11 of 15 had perforation. In 1470-nm continuous wave with 120 J/cm of linear endovenous energy density, two of three presented ulcers and one of three showed perforation. In 1470-nm continuous wave with 60 J/cm of linear endovenous energy density, two of four had ulcers and two of four had perforation. In 1320-nm pulsed wave, there were neither ulcers nor perforation in the specimens. CONCLUSIONS: While endovenous laser ablation using continuous wave results in perforation in many cases, pulsed wave does not lead to perforation.