Outcome of Canalith Repositioning Procedure in Patients with Persistent and Transient Geotropic Direction-Changing Positional Nystagmus: Short-term Follow-up Evaluation
10.21790/rvs.2018.17.3.109
- Author:
Seung Sik JEON
1
;
Sung Won LI
;
Sung Kyun KIM
;
Yong Bok KIM
;
Il Seok PARK
;
Seok Min HONG
Author Information
1. Departments of Otorhinolaryngology-Head and Neck Surgery, Hallym University Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong, Korea. thecell20@gmail.com
- Publication Type:Original Article
- Keywords:
Benign paroxysmal positional vertigo;
Horizontal canal;
Direction-changing nystagmus
- MeSH:
Benign Paroxysmal Positional Vertigo;
Follow-Up Studies;
Humans;
Nystagmus, Physiologic
- From:Journal of the Korean Balance Society
2018;17(3):109-115
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
OBJECTIVES: Patients, who showed persistent geotropic-direction changing positional nystagmus (p-DCPN) tend to have different clinical manifestations from those who showed transient geotropic DCPN (t-DCPN). We investigated the clinical characteristics between p-DCPN and t-DCPN patients, and its recovery rate after canalith repositioning procedure (CRP). METHODS: Based on the duration of nystagmus, 117 geotropic DCPN patients were classified to 2 groups, p-DCPN and t-DCPN. Barbeque maneuver had been introduced towards the opposite direction of null plane for the p-DCPN patients, and to the opposite direction of stronger nystagmus for the t-DCPN patients. RESULTS: Seventy-four patients showed t-DCPN and 43 patients were classified to the p-DCPN cases. No p-DCPN patient showed prompt improvement after the 1st canalolith reposition therapy. Among the t-DCPN patients, 18 canal switch cases were found , but, there was no canal switch cases found among the p-DCPN The CRP has showed less effective for the p-DCPN patients than the t-DCPN patients (after the 1st CRP, 37 in 74 improved, p < 0.001). CONCLUSIONS: Due to its distinguishing clinical manifestation, p-DCPN may have different pathogenesis and clinical mechanisms from t-DCPN. And for the p-DCPN patients, the CRP seems not an efficient treatment compared to the t-DCPN patients. Further study with larger number of enrolled subjects is necessary.
