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Τετάρτη 21 Φεβρουαρίου 2018

Prognostic value of the blink reflex test in Bell’s palsy and Ramsay-Hunt syndrome

Publication date: Available online 3 February 2018
Source:Auris Nasus Larynx
Author(s): Young Min Hah, Sang Hoon Kim, Junyang Jung, Sung Su Kim, Jae Yong Byun, Moon Suh Park, Seung Geun Yeo
ObjectiveThis study was designed to evaluate the prognostic value of the blink reflex (BR) test in patients with Bell's palsy (BP) or Ramsay Hunt syndrome (RHS).MethodsThe House–Brackmann (HB) grade of patients diagnosed with BP and RHS was determined at first visit and 3 months later. Final HB grade III–VI was defined as an incomplete recovery. Factors evaluated as prognostic of poor recovery included electroneurography (ENoG) degeneration rate (DR)>90%, and absence of BR. Rates of complete and incomplete recovery were calculated and the associations between prognostic factors and recovery were determined.ResultsOf the 129 included patients, 98 (76%) had BP and 31 (24%) had RHS. Absence of BR and low mean ENoG value were significantly associated with incomplete recovery in both the BP and RHS groups (p<0.05 each). Initial HB grade V–VI was significantly associated with rate of incomplete recovery in patients with RHS (p<0.05 each). Severe residual palsy (final HB grade V–VI) in the absence of BR was significantly more frequent in patients with RHS than with BP (p<0.05).ConclusionBR test results were a good prognostic indicator in patients with BP and RHS, as were ENoG value. Absence of BR was more frequently associated with severe residual palsy in RHS than in BP.



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