Proceedings of COBEM 2011 - 21st Brazilian Congress of Mechanical Engineering
Alexandre Gonçalves Teixeira, Luiz Fernando Ribeiro Pereira, Agnaldo Lopes da Silva Filho, Prof. Alfredo Balena, 190. Marcos Pinotti, Leandro Soares Oliveira.
Abstract. Breastfeeding provides the optimum feed for the growth of a child. However, there are factors which limit the breastfeeding practice. Nipple trauma are one of the most common reasons for early weaning. The therapeutic approach includes orientation, dry treatment and wet treatment. However, none of these interventions provides satisfactory results. The aim of this study was to verify the efficacy of a prototype for phototherapy consisting of LEDs in the near infrared spectral range for the treatment of nipple trauma. Ten participants with nipple lesions (abrasions, cracks and fissures) were randomly in two groups: control (n=5) and experimental (n=5). The two groups received nipple care orientation and adequate techniques to breastfeeding, but the control received, additionally, placebo phototherapy, while the experimental was submitted to phototherapy applications by LED prototype developed for this study. The parameters of the irradiation were wavelength of 860 nm, fluency of 4 J/cm², fluency rate of 50 mW/cm2 and time of application of 79 seconds, in a pulsed emission mode. The application occurred two times per week, in alternated days, during consecutive four weeks. The nipple lesion area was measured by an image analysis software, and the pain intensity was measured by the Numeric Visual Scale. The analysis showed a statistically significant reduction in the area of the nipple lesions of both experimental and control groups (p=0.00) and, also, a significant difference between them (p=0.00). In the first sessions of the intervention, there was an acceleration of the healing process of the nipple lesions in the experimental group when compared to the control group. Pain intensity decreased in both groups with the increase in the number of sessions, but was statistically significant only for the experimental group (p=0.00). Moreover, a significant difference between groups (p=0.03) was observed for pain reduction. The results of this study showed that the prototype for phototherapy with LEDs in the near infrared spectral range was an effective tool in treatment of nipple trauma.