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BACKGROUND: The utility of arterial lines in microvascular decompression (MVD) is not well described.OBJECTIVE: To examine the safety and costs of arterial lines compared with noninvasive blood pressure (NIBP) monitoring in MVDs.METHODS: We retrospectively reviewed patients undergoing MVD from 2012 to 2020. Patients were grouped by procedure date from 2012 to 2014 and 2015 to 2020, reflecting our institution's decreasing trend in arterial line placement around 2014 to 2015. Patient features, intraoperative characteristics, and postoperative complications were collected for all cases. Statistical differences were evaluated using chi-squared analyses and t-tests.RESULTS: Eight hundred fifty-eight patients underwent MVDs, with 204 between 2012 and 2014 and 654 between 2015 and 2020. Over time, the frequency of arterial line placement decreased from 64.2% to 30.1%, P < .001. Arterial lines involved 11 additional minutes of preincision time, P < .001. Patients with arterial lines required both increased doses and costs of vasoactive medications intraoperatively. Patients receiving arterial lines demonstrated no significant differences in complications compared with patients with NIBP monitoring. On average, patients with arterial lines incurred $802 increased costs per case compared with NIBP monitoring.CONCLUSION: NIBP monitoring in MVDs provides neurologically and hemodynamically safe outcomes compared with invasive blood pressure monitoring. For patients without significant cardiopulmonary risk factors, NIBP monitoring may be a cost-effective alternative in MVDs.
View details for DOI 10.1227/ons.0000000000000130
View details for PubMedID 35315836