Eficiência do laser diodo 980 nm em comparação à da glicose a 75% na oclusão de veias da orelha de coelhosPalavras-chave: escleroterapia; terapia a laser; glucose; coelhos.
AbstractBackground: The laser is a new treatment to varicose veins and there is several myths and doubts in relation to its efficacy; then, there is the need to compare it with the most commonly sclerosing solution (hypertonic glucose) used in our specialty. Objective: To compare the efficiency of the diode laser 980nm to the glucose 75% in the occlusion of veins from the ear of rabbits. Methods: Aleatory trial in laboratory animals during 21 days. The sample consisted of ears from male adult rabbits. Group L (laser): 15 ears treated with laser; group G (glucose 75%): 15 ears treated with glucose 75%. Primary variables: sclerotic and/or occluded veins. Complementary variables: volume of the managed substance, complications and weight of rabbit. The sample size was estimated in 30 ears. The statistical analysis was carried out by Fisher'' s exact test associated to the Relative Risk (RR), calculating the confidence interval of 95% for the mentioned variables.Results: The incidence of sclerosis or venous occlusion in group G was 53% (8/15; 95%CI: 27-79) and in group L was 20% (3/15; 95% CI: 4-49). Two-tailed p was 0.1281, RR using the approximation of Katz was 2.66; 95%CI: 0.87-8.15.
Conclusion:The efficiency of the diode laser 980 nm in comparison to glucose 75% in occlusion of veins in this experimental model was equivalent.