Unilateral posterior canal benign paroxysmal positional vertigo (BPPV) cases will be randomized to treat with single or multiple cycles of canalith repositioning procedure.The treatment outcomes will be assessed at 7th and 28th days.
Patients present with brief episodes of vertigo will be evaluated by Dix-Hallpike test. Cases with positive Dix-Hallpike test, unilateral, posterior canal, will be randomized with block of four. Either single or multiple cycles of canalith repositioning procedure will be performed. Four treatment outcomes will be blindly assessed at 7 and 28 days.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Enrollment
114
Canalith repositioning procedure; single or multiple cycles
Department of Otolaryngology Faculty of Medicine, Chiang Mai University 110 Intawaroros Road, Sriphum
Chiang Mai, Thailand
RECRUITINGDix-Hallpike test (DHT)
percentage of negative DHT between single and multiple cycles
Time frame: At 7th day
Dizziness handicap inventory (DHI)
total score in the questionaire
Time frame: compare to the first visit at 7th between single and multiple cycles
Dizziness handicap inventory (DHI)
total score in the questionaire
Time frame: compare to the first visit at 28th day between single and multiple cycles
Subjective symptoms
Asking the patient's symptom: Improve, same, worse
Time frame: Improvement of the symptoms compare to the first visit at 7th day between single and multiple cycles
Subjective symptoms
Asking the patient's symptom: Improve, same, worse
Time frame: Improvement of the symptoms compare to the first visit at 28th day between single and multiple cycles
Loss of balance
5 levels Level 1: Able to continue daily activities without any helps. Level 2: Able to continue daily activities without any helps except complicated activities such as riding a bicycle, walking on counterpoise or scaffolding. Level 3: Not able to continue daily activities without help excepts simple activities such as self-care, housework, walking, or being a passenger in a vehicle Level 4: Not able to continue daily activities alone without help except self-care Level 5 Not able to continue daily activities alone without help except self-care without ambulation. Need to stay only in a house or a living place. (From: The Royal college of Otolaryngologists head and neck surgeons of Thailand, and social security office of thailand)
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Time frame: compare to the first visit at 7th between single and multiple cycles
Loss of balance
5 levels Level 1: Able to continue daily activities without any helps. Level 2: Able to continue daily activities without any helps except complicated activities such as riding a bicycle, walking on counterpoise or scaffolding. Level 3: Not able to continue daily activities without help excepts simple activities such as self-care, housework, walking, or being a passenger in a vehicle Level 4: Not able to continue daily activities alone without help except self-care Level 5 Not able to continue daily activities alone without help except self-care without ambulation. Need to stay only in a house or a living place. (From: The Royal college of Otolaryngologists head and neck surgeons of Thailand, and social security office of thailand)
Time frame: compare to the first visit at 28th day between single and multiple cycles
Dix-Hallpike test (DHT)
percentage of negative DHT between single and multiple cycles
Time frame: At 28th day