120名志愿者接受了选择性冠状动脉旁路移植术（CABG）手术。 志愿者被随机分配到四个相同大小（n = 30）的不同组：对照组，安慰剂组，LLLT [λ= 640 nm和空间平均能量注量（SAEF）= 1.06 J / cm（2）]和LED（λ） = 660±20nm，SAEF = 0.24J / cm（2））。 根据手术前的空腹血糖测试结果，参与者也被分为高血糖和血糖正常的亚组。 评估的结果是通过视觉模拟量表（VAS）和McGill疼痛问卷进行咳嗽时的疼痛。 结果： 手术后患者随访1个月。 与安慰剂组和对照组相比，LLLT和LED组在术后第6天和第8天与VAS和McGill问卷（p≤0.05）相比，疼痛减轻更多，结果相似。 Low-Level Laser and Light-Emitting Diode Therapy for Pain Control in Hyperglycemic and Normoglycemic Patients Who Underwent Coronary Bypass Surgery with Internal Mammary Artery Grafts: A Randomized, Double-Blind Study with Follow-Up. 120 volunteers who underwent elective coronary artery bypass graft (CABG) surgery. The volunteers were randomly allocated to four different groups of equal size (n = 30): control, placebo, LLLT [λ = 640 nm and spatial average energy fluence (SAEF) = 1.06 J/cm(2)], and LED (λ = 660 ± 20 nm and SAEF = 0.24 J/cm(2)). Participants were also divided into hyperglycemic and normoglycemic subgroups, according to their fasting blood glucose ...