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

Junior, Carlos Seme Nejm; Timi, Jorge Rr; Araujo, Walter B. de; Caron, Filipe Carlos

doi:10.1177/0268355515620944

Cited by 6 publications

(3 citation statements)

References 19 publications

(22 reference statements)

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“…14–16 Most clinical literature has focussed on the LEED value as an absolute measurement of treatment efficacy, without taking into consideration the possible variations of power and pullback speed and the resulting variation in thermal damage and therapeutic outcome. 12 , 17–19…”

Section: Introductionmentioning

confidence: 99%

Pattern of thermal damage and tissue carbonisation from endovenous radiofrequency ablation catheter – Using an in vitro porcine liver model

et al. 2020

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Background Successful endovenous thermoablation relies on transmural vein wall ablation. We investigated the pattern of thermal spread and tissue carbonisation from RadioFrequency-induced ThermoTherapy (RFiTT) at different powers and pull back methods, using a porcine liver model. Methods We used a previously validated in-vitro porcine liver model. Different powers from 5–25 W were used to administer 150 J. We compared continuous and pulsed energy delivery. Length, lateral spread, and total area of thermal damage, together with any tissue carbonisation, was measured using digital analysis software. Results All experiments used 150 J total energy. Total thermal damage area was smaller with lower power and pulsed energy. Continuous energy caused more tissue carbonisation than pulsed except at 25 W. Conclusion Reduced thermal damage with lower power or pulsed energy results from cooling due to increased time of treatment. Increasing the power increases tissue carbonisation. Optimal treatment is determined by the highest power used continuously that does not cause tissue carbonisation.

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Section: Introductionmentioning

confidence: 99%

Pattern of thermal damage and tissue carbonisation from endovenous radiofrequency ablation catheter – Using an in vitro porcine liver model

et al. 2020

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“…5,6 Of these, EVLA stands out for its favorable results in terms of saphenous closure rates, patient satisfaction, and reduced post-procedure morbidity. 3,8,9 In view of the growing acceptance of EVLA as an alternative method to stripping for treatment of CVI, 10 this study was conducted with the intention of elucidating what influence linear endovenous energy density (LEED) has on the outcome of the procedure at 30 days.…”

Section: Introductionmentioning

confidence: 99%

Influência da densidade de energia endovenosa linear no sucesso da termoablação endovenosa a laser como tratamento da insuficiência venosa crônica

Heineberg¹,

Brandão²,

Caron³

et al. 2019

J. vasc. bras.

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Resumo Contexto Mostra-se relevante a elucidação da influência da densidade de energia endovenosa linear (linear endovenous energy density, LEED) média no sucesso do tratamento da insuficiência venosa crônica por termoablação endovenosa a laser visando diminuir a morbidade desse método. Objetivos Avaliar a influência da LEED média na prevalência de fechamento das safenas após 30 dias do procedimento. Métodos Foram analisados 153 membros inferiores de 118 pacientes de um hospital referência, submetidos a termoablação com laser endovenoso 1470 nm sob anestesia local para o tratamento de insuficiência venosa crônica. Foi calculada a LEED média dos pacientes tratados para determinar se foi necessária uma energia maior que a média para o sucesso do tratamento. Resultados Dos 153 membros inferiores submetidos ao tratamento, houve diferença significativa (p = 0,021) no fechamento da junção safeno-femoral relacionada à LEED média utilizada acima do joelho. Por outro lado, no segmento de coxa não houve diferença significativa. Conclusões A LEED acima da média de 70,57 J/cm apresentou um índice maior de fechamento na junção safeno-femoral. Porém, no segmento de coxa, a densidade não influenciou o resultado, demonstrando que uma energia mais alta do que 70,57 J/cm tende a não ser necessária para o tratamento desse segmento.

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“…The importance of this subject has prompted many studies to discuss the ideal power settings, energy density, wavelength, and laser fiber types for achieving the final objective of endovenous thermoablation. [5][6][7][8][9] The objectives of this study are to evaluate the influence of different linear endovenous energy densities (LEED) on echographic results at the saphenofemoral junction (SFJ) and their evolution, in terms of patency and presence of reflux, over a 1-year follow-up period after thermoablation of the GSV with a 1470 nm endovenous using 7 W or 15 W power settings; and to determine the clinical progress of patients and their complications.…”

Section: Introductionmentioning

confidence: 99%

Influência da termoablação com baixa e alta densidade de energia na junção safeno-femoral, utilizando laser endovenoso 1470 nm

et al. 2017

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Background: It is important to acquire technical knowledge about the power and linear endovenous energy density (LEED) settings needed to achieve the ultimate goal of endovenous laser ablation (EVLA). Objectives: To evaluate the influence of different LEEDs in terms of patency and presence of reflux and to determine clinical outcomes. Methods: Sixty great saphenous veins (GSVs) were included. Patients were randomized into 2 groups, low-power EVLA (7 W and LEED of 20-40 J/cm) and high-power EVLA (15 W and LEED of 80-100 J/cm). Patients were followedup with duplex ultrasound and calculation of venous clinical severity score (VCSS) at 3-5 days, 30 days, 180 days, and 1 year after the procedure. Results: 18 patients (29 limbs) treated with 7 W of laser power and 13 patients (23 limbs) treated with 15 W of laser power completed the study. There was no significant difference regarding age, operating time, use of analgesics, laterality, sex, or presence of comorbidities. Mean LEED was 33.54 J/cm in the 7-W group and 88.66 J/cm in the 15-W group. Both groups exhibited improvements in VCSS and significant reductions in SFJ diameters, and there were no significant difference in increase of length of the GSV stump or rates of reflux after treatment. Conclusions: The higher energy density setting was more effective for stabilizing the length of the GSV stump and was associated with a lower incidence of reflux at 6 months. Further studies with a longer follow-up period are required to substantiate this hypothesis.

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

Cited by 6 publications

References 19 publications

Pattern of thermal damage and tissue carbonisation from endovenous radiofrequency ablation catheter – Using an in vitro porcine liver model

Pattern of thermal damage and tissue carbonisation from endovenous radiofrequency ablation catheter – Using an in vitro porcine liver model

Influência da densidade de energia endovenosa linear no sucesso da termoablação endovenosa a laser como tratamento da insuficiência venosa crônica

Influência da termoablação com baixa e alta densidade de energia na junção safeno-femoral, utilizando laser endovenoso 1470 nm

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