Скачать или смотреть Left Short Arm Posterior Semicircular Canalolithiasis

A 46-year-old man presented to our otoneurology service in southern Rajasthan with a 7-day history of positional vertigo and a sensation of being pushed backward when getting up from the supine position. None of his symptoms suggested a central vestibular disorder. Extraocular movements (smooth pursuits and saccades) and gaze holding were normal. The left Dix-Hallpike test (DHT) did not elicit nystagmus during 1 minute of observation in the head-hanging position. After flexing the head 60 degrees from the left DHT position (thus improvising it as a left half-DHT), left torsional upbeating nystagmus was elicited. We diagnosed the patient with left short-arm posterior semicircular canalolithiasis. A prone pitch-and-yaw maneuver was then performed for the diagnosed condition. The left DHT and half-DHT, performed 4 hours later, did not elicit any positional nystagmus, and the patient was asymptomatic.