Σάββατο 6 Μαΐου 2017

Thyroid-Related Orbital Decompression Surgery: A Multivariate Analysis of Risk Factors and Outcomes

imagePurpose: Despite the number of publications on orbital decompression surgery for thyroid eye disease, there are few comparative studies and most studies are underpowered. The goal of the study is to use multivariable analysis to identify independent patient and disease-related predictors of response to decompression surgery and of need for secondary decompressions. Methods: The authors retrospectively reviewed all patients who underwent transorbital thyroid-related orbital decompression surgery at the Kellogg Eye Center of the University of Michigan between 1999 and 2014. Demographic, medical, and surgical covariates were collected. Decompression techniques included medial, lateral, and balanced decompressions, with or without orbital fat removal. Main outcomes included proptosis reduction and secondary decompressions, both analyzed at the orbital level. Univariate and multivariable analyses (with adjustment for interorbit correlation) were conducted to determine predictors of the outcomes of interest. Results: Mean proptosis reduction was 3.8 ± 2.4 mm (mean ± standard deviation, N = 420 orbits). The secondary decompression rate was 13.8% (82/594). On multivariable mixed linear regression, larger preoperative proptosis (p

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