The association between anesthesia type and postoperative outcomes in patients receiving primary total shoulder arthroplasty.

PURPOSE

There has been interest to investigate optimal anesthetic techniques for primary total shoulder arthroplasty (TSA). In this study, we investigate if there are differences in postoperative complications in patients receiving (1) regional alone; (2) general alone; and (3) regional plus general anesthesia for primary TSA.

METHODS

Patients undergoing primary TSA from 2014 to 2018 were identified in a national database. Patients were stratified into 3 cohorts: general anesthesia, regional anesthesia, and general anesthesia combined with regional anesthesia. Thirty-day complications were assessed using bivariate and multivariate analyses.

RESULTS

Of 13,386 total patients undergoing TSA, 9079 patients (67.8%) had general anesthesia, 212 (1.6%) had regional anesthesia, and 4095 (30.6%) had general anesthesia combined with regional anesthesia. There were no significant differences in postoperative complications between the general anesthesia group and the regional anesthesia group. Following adjustment, an increased risk of extended length of hospital stay was seen in the combined general and regional anesthesia group compared to those who only had general anesthesia (p = 0.001).

CONCLUSION

General versus regional versus general plus regional anesthesia have no difference in postoperative complications in patients receiving primary total shoulder arthroplasty. However, addition of regional anesthesia to general anesthesia is associated with increased length of stay.

LEVEL OF EVIDENCE

III.