Abstract:Objective To investigate the impacts of ultrasound-guided stellate ganglion block (SGB) on hemodynamics and postoperative cognitive function in patients undergoing shoulder arthroscopic surgery.Methods From January 2024 to June 2024, 120 patients undergoing shoulder arthroscopic surgery in our hospital were randomly assigned into general anesthesia group (n = 60, implementing general anesthesia) and assisted SGB group (n = 60, implementing ultrasound-guided SGB combined with general anesthesia). The intraoperative hemodynamics, postoperative stress status [serum cortisol (Cor) and interleukin-6 (IL-6)], postoperative pain level [evaluated by visual analogue scale (VAS) score], postoperative biomarkers [serum matrix metalloproteinase-9 (MMP-9) and neurospecific protein S-100β (S-100β)], and postoperative cognitive function [evaluated using the mini-mental state examination (MMSE)] were compared between the two groups.Results There was no statistically significant difference in intraoperative blood loss and surgical time between the two groups of patients (P > 0.05). After induction of anesthesia (T1), the mean arterial pressure (MAP) and heart rate (HR) of the two groups of patients were significantly lower than when they entered the operating room (T0), the differences were statistically significant (P < 0.05). The MAP and HR during the beginning of the surgery (T2), 30 min after the start of the surgery (T3), and at the end of the surgery (T4) were higher than those at T0, the differences were statistically significant (P < 0.05). While the MAP and HR in the assisted SGB group during T1, T2, T3 and T4 time points were lower than those in the general anesthesia group, the differences were statistically significant (P < 0.05). The VAS scores of the assisted SGB group were significantly lower than those of the general anesthesia group at 12 and 24 h after surgery, and the differences were statistically significant (P < 0.05). The levels of serum Cor and IL-6 in the two groups at 12 and 24 h after surgery were higher than those at 1 d before surgery, but the levels of serum Cor and IL-6 in the assisted SGB group were lower than those in the general anesthesia group, the differences were statistically significant (P < 0.05). The levels of serum MMP-9 and S-100β in the two groups at 24 and 72 h after surgery were higher than those at 1 d before surgery (P < 0.05), but the levels of serum MMP-9 and S-100β in the assisted SGB group were lower than those in the general anesthesia group, the differences were statistically significant (P < 0.05). The MMSE score of the two groups at 3 and 5 d after surgery were lower than those at 1 d before surgery, but the MMSE score of the assisted SGB group was higher than that of the general anesthesia group, the difference was statistically significant (P < 0.05).Conclusion The implementation of ultrasound-guided SGB during shoulder arthroscopic surgery can maintain intraoperative hemodynamic stability, obviously alleviate postoperative stress and pain, obviously reduce serum MMP-9 and serum S-100β levels, and help alleviate postoperative cognitive dysfunction. It is worthy clinical application.