Abstract: The effect of ultrasound-guided continuous lumbar sympathetic ganglion block combined with general anesthesia on the analgesia and recovery quality in patients undergoing knee arthroplasty was analyzed in this study. From January 2017 to January 2019, 100 patients with knee arthroplasty in our hospital were selected as the subjects of study, they were divided into anesthesia group and anesthesia group according to random number table, 50 cases in each group. The single anesthesia group was given general anesthesia, and the block anesthesia group was given continuous lumbar sympathetic ganglion block guided by ultrasound. The of analgesia and recovery quality, adverse reactions were compared between the two groups. The results showed that, the mean arterial pressure (MAP) and heart rate (HR) in the block anesthesia group at skin incision time (T1), knee arthroplasty time (T2), postoperatively (T3) were significantly lower in those in the anesthesia group, the anesthesia excellent rate in the block anesthesia group was significantly higher than in the anesthesia group, the difference was statistically significant (P<0.05). The amount of anesthetics, opening eyes, clenching, extubation, and awakening time and awakening complications rate in the block anesthesia group were significantly lower than those in the anesthesia group, the difference was statistically significant (P<0.05). The comparison of the adverse reaction rate between the block anesthesia group and the anesthesia group,the difference was no statistically significant (P>0.05). This study confirms that, ultrasound-guided continuous lumbar sympathetic ganglion block combined with general anesthesia can effectively improve the analgesia and recovery quality in patients undergoing knee arthroplasty, and it has the good safety, it's worth for further clinical promotion.

Key words: ultrasound-guided, continuous lumbar sympathetic ganglion block, general anesthesia, knee arthroplasty, analgesia quality, recovery quality