Abstract：
OBJECTIVES:To evaluate whether monothermal caloric screening can reduce the number of caloric irrigations required in the vestibular testing battery while maintaining diagnostic accuracy. DESIGN:Prospective controlled cohort study. Three hundred and ninety patients referred for vestibular testing at this tertiary referral health system over a 1-year period were evaluated; 24 patients met exclusion or failure criteria and 366 patients were included in the study. Population was 35.6% male; average age was 50.4 years old. Each patient underwent caloric testing using either warm or cool water irrigation initially and this data was used for monothermal screening data. All patients then completed bithermal binaural caloric testing to obtain the "gold standard" bithermal data for comparison. The sensitivity and specificity of monothermal cool or monothermal warm caloric tests were calculated using a receiver operating characteristic curve analysis. RESULTS:Using a monothermal interear difference threshold of 25%, warm monothermal screening had sensitivity of 98.0%, specificity of 91.3%, false negative rate of 2%, and false positive rate of 8.7%. Cool monothermal screening also had excellent sensitivity (92.3%) and specificity (95.3)%, with a false negative rate of 7.7%, and a false positive rate of 4.7%. The diagnosis associated with the single false negative warm monothermal caloric test was compensated vestibular paresis. In the study population, 71.9% had a negative monothermal screen; if the monothermal data were accepted, 2 fewer irrigations would have been performed resulting in an average saving of $264 (typical Medicare reimbursement for 2 irrigations) billed per patient screened as well as shortening the average testing battery by about 15 min. CONCLUSIONS:Warm monothermal caloric screening can reduce time and cost of vestibular testing while nearly matching the diagnostic accuracy of bithermal testing.
journal_name
Ear Hearjournal_title
Ear and hearingauthors
Thatcher AL,Beckerman ML,Telian SA,King WMdoi
10.1097/AUD.0000000000000262subject
Has Abstractpub_date
2016-05-01 00:00:00pages
e188-93issue
3eissn
0196-0202issn
1538-4667journal_volume
37pub_type
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