2025 Poster Presentations
P108: IMPACT OF PRE-OPERATIVE CALORIC ASYMMETRY ON LENGTH OF STAY IN CEREBELLOPONTINE ANGLE TUMOR RESECTION
Areeb Shah1; Ruben Ulloa, MD2; Nedim Durakovic, MD2; 1Saint Louis University School of Medicine; 2Washington University in St. Louis
Educational Objectives: After this presentation, participants should be able to understand which factors affect the length of stay (LOS) in patients who undergo surgery for Cerebellopontine angle (CPA) tumors.
Objective: To understand predictive factors for LOS in patients undergoing surgical resection for CPA tumors.
Study Design: Retrospective case series
Methods: A retrospective chart review from 2020 to 2024 was conducted at our tertiary academic center. Inclusion criteria included patients 18 or older with CPA tumors, vestibular testing data, and completed charts. Exclusion criteria were patients with NF2, previous CPA surgery, and those who received gamma knife radiation instead of surgery. We studied 21 variables grouped into four categories: demographics, postoperative complications, surgery information, and comorbidities. Essential variables to highlight are the Adult Comorbidity Evaluation – 27 (ACE-27), discharge location (home or inpatient rehab), and inpatient medications given (antiemetics and opioids). Associations between all variables and LOS were assessed using bivariate and multivariate analysis.
Results: 17 patients were included. The mean LOS for patients was 4.35 days (SD=1.80). Discharge to home was associated with a significantly shorter LOS than discharge to inpatient rehabilitation (p=0.01, mean diff. = -2.64 days, 95% CI -4.564 to -0.718, Cohen's d = -1.89). Additionally, BMI class was found to be associated with LOS (p=0.04), although a post-hoc test indicated no specific pairwise differences were significant (p=0.107). Regarding antiemetic and opioid treatments, on univariate analysis, patients who received a scopolamine patch were associated with a longer LOS (p=0.036, mean diff. = 1.81, 95% CI -3.43 to -0.14, Cohen’s d = 1.60), as were those who received meclizine (p=0.031, mean diff. = -2.41, 95% CI -4.55 to -0.26, Cohen’s d = 1.58). Out of all the inpatient medications, multivariate analysis found that Zofran is associated with shorter LOS (p=0.021, B=-3.39, SE=1.26, 95% CI -6.17 to 0.87), while scopolamine patches (p=0.005, B=2.40, SE=0.69, 95% CI 0.87 to 3.92) and oxycodone (p=0.026, B=2.48, SE=0.97, 95% CI 0.35 to 4.62) are associated with longer LOS.
Conclusion: On multivariate analysis, receiving Zofran is associated with shorter LOS, while scopolamine patches and oxycodone are associated with longer LOS. On univariate analysis, discharge to home is associated with shorter LOS, and scopolamine patches and meclizine are associated with longer LOS.