Τρίτη 10 Οκτωβρίου 2017

A Subjective Rating Scale for Initial Assessment of Sudden Unilateral Sensorineural Hearing Loss

Objective: To examine the value of a subjective numerical rating scale (NRS) in the initial evaluation of patients suspected of suffering from unilateral sudden sensorineural hearing loss (SSNHL) until a formal audiogram is available. Study Design: Prospective noncontrolled clinical study. Methods: Thirty-one consecutive patients referred to the emergency department due to suspected unilateral SSNHL and with no other aural pathology by history or physical examination were enrolled. Patients were asked to characterize the severity of their hearing loss using an NRS of 1 (normal hearing) to 6 (complete deafness). SSNHL was defined as an SNHL of at least 30 dB over 3 consecutive frequencies that occurred in 3 days or less. A formal audiogram was obtained subsequently as soon as available. Results: Twenty-four patients were treated with steroids and met the audiometric criteria of SSNHL. All scored their NRS as 3 or more. None of the 7 patients whose NRS grades were ≤2.5 met the criteria for SSNHL. Two patients were treated with steroids although their hearing did not meet the audiometric criteria for SSNHL as the hearing loss was limited to 2 consecutive frequencies. The NRS score for both was Conclusion: In addition to the patient's history and physical examination, a NRS can be a useful tool in the preliminary assessment of patients suspected of having SSNHL until audiometry becomes available. In the scale of 1-6, an NRS score of 3 or more reliably predicts the need to treat the patient with steroids according to the accepted criteria.
Audiol Neurotol 2017;22:154-159

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