Assessment of sleep quality in benign paroxysmal positional vertigo recurrence

Abstract

Objective: Despite the availability of highly effective treatments, there is a significant recurrence rate of benign paroxysmal positional vertigo (BPPV). This study is aimed to quantitatively measure sleep quality in BPPV patients and correlate it with the recurrence of BPPV.

Methods: In this longitudinal cohort study, the clinical records of 67 elderly or middle-aged adult patients who were diagnosed with BPPV at Neurology Clinic, Beijing Chaoyang Hospital affiliated to Capital Medical University between 2013 and 2014. The ‘recurrent’ and ‘non-recurrent’ BPPV were respectively defined. Primary data collection included the medical history, blood test and Pittsburgh Sleep Quality Index measurement.

Results: Among the total 67 patients after successful treatment, recurrent BPPV is observed in 37.31% patients (n = 25) within 2 years. Among all 11 variables analyzed between recurrent and non-recurrent groups, only the Pittsburgh Sleep Quality Index (PSQI) scores showed significant difference (p<.001). In details, these differences were also measured in five individual sleep items, including the subjective assessment of sleep quality, sleep latency, sleep duration, the use of sleep-aid medication and daytime dysfunctions (all p<.05). Regression analysis showed patients with higher PSQI score (lower sleep quality) had higher risk of BPPV recurrence [odds ratio (OR)=1.17, 95% confidence interval (CI): 1.04–1.32, p=.0082].

Conclusions: The sleep quality in patients with BPPV recurrence is significantly poorer compared to non-recurrent patients. Our result suggested sleep quality as measured by PSQI is an independent risk factor of BPPV recurrence.

Keywords:

• Benign paroxysmal positional vertigo
• recurrence
• sleep quality
• Pittsburgh Sleep Quality Index

Disclosure statement

No potential conflict of interest was reported by the authors. This work was financially supported by the National Natural Science Foundation of China.(no.81271309)

Additional information

Funding

This work was financially supported by the National Natural Science Foundation of China.