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Original Article
- Outcome of Canalith Repositioning Procedure in Patients with Persistent and Transient Geotropic Direction-Changing Positional Nystagmus: Short-term Follow-up Evaluation
- Seung Sik Jeon, Sung Won Li, Sung Kyun Kim, Yong Bok Kim, Il-Seok Park, Seok Min Hong
- Res Vestib Sci. 2018;17(3):109-115. Published online September 18, 2018
- DOI: https://doi.org/10.21790/rvs.2018.17.3.109
- 5,549 View
- 99 Download
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Abstract
PDF - 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.
Case Report
- Positional Vertigo Showing Direction-Changing Positional Nystagmus after Chronic Otitis Media Surgery: Is It Benign Paroxysmal Positional Vertigo?
- Seongjun Choi, Jung Eun Shin, Chang-Hee Kim
- Res Vestib Sci. 2018;17(1):23-27. Published online March 15, 2018
- DOI: https://doi.org/10.21790/rvs.2018.17.1.23
- 13,969 View
- 114 Download
- 3 Crossref
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Abstract
PDF
Supplementary Material - This case report describes a patient who developed positional vertigo after surgery for chronic otitis media on the right side. Canal wall up mastoidectomy was performed, and the stapes was moderately mobilized during removal of the inflammatory granulation tissues that were attached to it. Immediately after the surgery, positional vertigo developed. The patient showed weakly left-beating spontaneous nystagmus in a seated position. Examination of positional nystagmus revealed geotropic direction-changing positional nystagmus with a prolonged duration and weak intensity in a supine head-roll test, which may be caused by a change in inner ear fluids due to a disruption of inner ear membrane around the oval window or penetration of toxic materials into the labyrinth during surgery.
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Citations
Citations to this article as recorded by
- Light cupula phenomenon: a systematic review
Nilüfer Bal, Melike Altun, Elif Kuru, Meliha Basoz Behmen, Ozge Gedik Toker
The Egyptian Journal of Otolaryngology.2022;[Epub] CrossRef - Direction-Changing Positional Nystagmus in Acute Otitis Media Complicated by Serous Labyrinthitis: New Insights into Positional Nystagmus
Jin Woo Choi, Kyujin Han, Hyunjoo Nahm, Jung Eun Shin, Chang-Hee Kim
Otology & Neurotology.2019; 40(4): e393. CrossRef - Dialysis disequilibrium syndrome revisited: Feeling “Disequilibrated” due to inner ear dyshomeostasis?
Chang-Hee Kim, Jung Eun Shin, Jung Hwan Park
Medical Hypotheses.2019; 129: 109262. CrossRef
- Light cupula phenomenon: a systematic review
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