Canalith repositioning in apogeotropic horizontal canal benign paroxysmal positional vertigo: Do we need faster maneuvering?
A correct diagnosis and a proper treatment may yield a rapid and simple cure for benign paroxysmal positional vertigo (BPPV). Although the Gufoni maneuver is widely used to treat apogeotropic horizontal-canal BPPV (HC-BPPV), few studies have clarified the relationship between the speed and intensity of maneuver execution and successful canalith reposition. To evaluate the effect of accelerated execution of the Gufoni maneuver, a prospective randomized controlled study was conducted with HC-BPPV patients in a single dizziness clinic. The patients had been diagnosed with apogeotropic HC-BPPV and were undergoing treatment at the dizziness clinic of a tertiary university hospital from January 2013 to August 2014. Two groups were treated with the maneuver performed at different speeds and the resolution rate was compared. The accelerated maneuver group was subjected to faster position changing-within 1s-during the reposition maneuver, while the non-accelerated maneuver group underwent slower maneuvers. Therapeutic efficacy was defined as dizziness relief or resolution of nystagmus within 1h. Fifty patients with apogeotropic HC-BPPV were enrolled and treated with the Gufoni maneuver in two groups of 25 patients. The overall resolution rate was 48% (24 of 50; p=1.00), regardless of acceleration. Our results suggest that a faster, more intense execution of the Gufoni maneuver provides little benefit in treating apogeotropic HC-BPPV. Detachment of the otolith from the cupula or the gravitational force-when the otolith is in the anterior arm of the HC-may be more important contributors to treatment efficacy.
Department of Neurology, Chonnam National University Medical School, Gwangju, Republic of Korea; Department of Neurology, Samsung Medical Center, Seoul, Republic of Korea.
Minho
M
Hwang
Department of Neurology, Chonnam National University Medical School, Gwangju, Republic of Korea.
Sang-Hoon
SH
Kim
Department of Neurology, Chonnam National University Medical School, Gwangju, Republic of Korea.
Kyung-Wook
KW
Kang
Department of Neurology, Chonnam National University Medical School, Gwangju, Republic of Korea.
Dasom
D
Lee
Department of Neurology, Chonnam National University Hwasun Hospital, Hwasun, Republic of Korea.
Sae-Young
SY
Lee
Department of Neurology, Chonnam National University Medical School, Gwangju, Republic of Korea.
Myeong-Kyu
MK
Kim
Department of Neurology, Chonnam National University Medical School, Gwangju, Republic of Korea. Electronic address: nrshlee@chonnam.ac.kr.
Seung-Han
SH
Lee
D000054:Acceleration; D000368:Aged; D000369:Aged, 80 and over; D065635:Benign Paroxysmal Positional Vertigo / Q000503:physiopathology / Q000628:therapy*; D005260:Female; D019416:Head Movements / Q000502:physiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D056888:Patient Positioning / Q000379:methods*; D011187:Posture; D011446:Prospective Studies; D012665:Semicircular Canals / Q000503:physiopathology*; D016896:Treatment Outcome
Acceleration; Benign paroxysmal positional vertigo; Canalith repositioning maneuver; Nystagmus; Semicircular canal; Treatment outcome