Low-intensity LED therapy ( λ 640 ± 20 nm) on saphenectomy healing in patients who underwent coronary artery bypass graft: a randomized, double-blind study

The objective of the present study was to evaluate clinically the saphenous tissue repair after LED therapy. Forty subjects of both genders who underwent CABG with extracorporeal circulation were randomly di vided into two groups: the placebo (PG) and experimental (EG). The experimental group underwent low-intensity LED therapy (λ 640  ± 20 nm, 6 J/cm2) on saphenectomy. The tissue repair was analyzed by digital photogrammetry on the first and fifth postoperative day. The border closure was blindly evaluated by three researchers. The hematoma and hyperemia area was quantitatively analyzed using ImageJ © software. The results showed that in the experimental group, there were less bleeding points and no dehiscence in saphenectomy, as compared to the placebo group. There was also a smaller area of hematoma and hyperemia in the experimental group (p <  0.0009). These data lead to the conclusion that the type of phototherapy protocol employed can assist in tissue repair.
Source: Lasers in Medical Science - Category: Laser Surgery Source Type: research