The Facial Paralysis Prognostic Index

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Abstract
The treatment of facial paralysis requires a reliable estimate of prognosis as well as an accurate diagnosis. Although the majority of patients recover, the degree of subsequent facial function varies. An estimation of the risk of nerve degeneration and subsequent disability is needed to guide therapy and to advise patients. Currently, prognosis is obtained by clinical evaluation of initial signs and symptoms, specific nerve excitability and function testing, and response to medical therapy. This study attempts to identify and quantitate factors that predict the outcome of facial paralysis. In 1214 patients with Bell's palsy, we identified factors associated with a severe course or poor outcome. We analyzed the predictive value of each item in an extensive research protocol, estimating the relative contribution to the total risk of unfavorable outcome by means of multiple regression models. With the use of these data, we have developed the facial paralysis prognostic index (FPPI). The FPPI can assist otologists to more accurately estimate outcome based on physical examination and electrical testing.