Fig. 2From: Effects of conventional nursing in the operating room combined with transcutaneous electrical acupoint stimulation on postoperative cognitive dysfunction after total knee arthroplasty in elderly patientsHistogram of the levels of (2A), IL-6(2B) and TNF-α(2C) in serum between the two groups. Abbreviation: Transcutaneous acupoint electrical stimulation (TEAS) group; conventional nursing in operation room (control) group; 1 day before surgery (T0), 1 day after surgery (T1), 3 days after surgery (T3); 7 days after surgery (T7). All data are expressed as the mean ± SD. *P < 0.05, suggesting that comparison with T0 within each group. #P < 0.05, suggesting that comparison between the study group and the control group at the same T pointBack to article page