Purpose: To assess the incidence of adverse cerebrovascular events following shoulder arthroscopy in the beach-chair position when compared with the lateral position.
Methods: Records of 5 shoulder surgeons were searched using Current Procedural Technology codes to identify patients who underwent arthroscopic shoulder surgery in both the beach-chair and lateral positions between 2015 and 2020. Using both Current Procedural Technology codes for cerebrovascular accident (CVA) imaging as well as the , , codes for CVA and late neurologic sequela, patient charts were analyzed in the 30-day postoperative period. The anesthesiology record also was queried for data regarding the blood pressure management intraoperatively, recording mean arterial pressures (MAPs), and vasopressor administration. Patient demographics, comorbidities, and complications were compared between the 2 cohorts using the Student 2-tailed -test for continuous variables and χ analysis for categorical variables. Significance was set at < .05.
Results: There were 711 patients included in the analysis, with 471 in the beach-chair cohort and 240 in the lateral cohort. Baseline demographics were similar between groups, except for age and American Society of Anesthesiologists physical status classification, with the lateral group being significantly younger ( < .001) and lower American Society of Anesthesiologists physical status classification ( = .001) than the beach-chair group. Mean body mass index, history of CVA, transient ischemic attack, hypertension, and peripheral vascular disease were not significantly different. There were no documented CVAs in either cohort. There was no significant difference in the number of postoperative radiologic scans to evaluate for CVA ( = .77) or neurologic sequelae ( = .48) between groups. The beach-chair cohort had fewer instances of MAP <65 mm Hg, greater mean minimum MAP, but a greater percentage of patients who received blood pressure support.
Conclusions: There were no significant differences identified in the incidence of CVA between patients undergoing arthroscopic shoulder surgery in the beach-chair and lateral positions.
Level Of Evidence: Level III, retrospective cohort study.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10724485 | PMC |
| http://dx.doi.org/10.1016/j.asmr.2023.100826 | DOI Listing |
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