Caloric tests in clinical practice in benign paroxysmal positional vertigo. (3rd August 2019)

• Record Type: Journal Article
• Authors: Bi, Jingtao; Liu, Bo; Zhang, Yi; Duan, Jinping; Zhou, Qian
• Is Part Of: Acta oto-laryngologica. Volume 139:Number 8(2019)
• Page Start: 671
• Page End: 676
• Publication Date: 2019-08-03
• Subjects: Benign paroxysmal positional vertigo -- caloric test -- canal paresis -- canalith repositioning procedure -- recurrence; Otolaryngology -- Periodicals; Ear -- Diseases -- Periodicals; Throat -- Diseases -- Periodicals; Otolaryngology -- Electronic Resources; Otorhinolaryngologic Diseases; 617.8
• DOI: 10.1080/00016489.2019.1614220
• Languages: English
• ISSNs: 0001-6489

Abstract

Abstract: Background: The value of caloric tests in benign paroxysmal positional vertigo (BPPV) patients is unclear. Objectives: To analyze the features and clinical significance of caloric tests in BPPV patients. Materials and methods: About 2192 patients (256 BPPV and 1936 non-BPPV) who complained of dizziness triggered by movement, accompanied by the symptom of hearing loss or a history of vertigo, participated in this prospective clinical study. All subjects received a caloric test, 213 BPPV patients underwent follow-up for at least 6 months after canalith repositioning procedures (CRPs). Results: (1) The abnormal canal paresis (CP) prevalence of BPPV was 57%. (2) The curative rate of single CRP decreased during follow-up from 90.1% after 7 days to 61% after 6 months and was significantly lower in patients with (54.1%) than in those without (70.1%) an abnormal CP at 6 months post-treatment ( p = .01). (3) The recurrent rate was significantly higher in BPPV patients with abnormal CP (25.2%) than with normal CP (12.5%; p = .017). Conclusions and significance: Patients with abnormal CP needed more CRPs and were more prone to relapse. The value of the caloric test in treatment planning and predicting recurrence in BPPV patients should be emphasized.