Abstract:Abstract: Objective?To compare the quality of anesthesia recovery between target-controlled infusion of Remifentanil and Sufentanil in elderly patients underwent laparoscopic radical gastrectomy for gastric cancer. ?Methods?Eighty-four elderly patients who underwent laparoscopic radical gastrectomy for gastric cancer from September 2016 to December 2017 were randomly divided into the Sufentanil and Remifentanil groups (n = 42 per group). The two groups used Sufentanil- and Remifentanil-based anesthesia by TCI. The wake-up time, extubation time, orientation recovery time, vital signs, stress response, distribution of T-cell subsets and incidence of adverse reactions were recorded and compared.?Results?The difference of orientation recovery time was not statistically significant (P > 0.05). The wake-up and extubation times of the Sufentanil group were significantly shorter than those of the Remifentanil group (P < 0.05). The differences in heart rate, mean arterial pressure, and arterial oxygen saturation following anesthesia and during surgery and those prior to anesthesia of the Sufentanil group were not statistically significant. However, those of the difference of Remifentanil group was statistically significant (P < 0.05). The concentrations of GLU, Cor, IL-6 and CRP in Sufentanil group were significantly lower than those in Remifentanil group at four time points after anesthesia, end of anesthesia 24 hours after anesthesia and 72 hours after anesthesia. CD3+, CD4+ and CD8+ T cell subsets and CD4+ / CD8+ in Remifentanil group were significantly higher than those in Remifentanil group at four time points after anesthesia, end of anesthesia 24 hours after anesthesia and 72 hours after anesthesia. The adverse reactions rate during anesthesia of the Remifentanil group was significantly higher than that of the Sufentanil group (P < 0.05).?Conclusion?For elderly patients undergoing laparoscopic radical gastrectomy for gastric cancer, target-controlled infusion of Sufentanil-based anesthesia have the advantages of stable anesthesia process, low stress response, light inhibition of cellular immunity and less adverse reactions, which is worthy of clinical promotion.