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TitleDescriptionSubject
1 Horizontal Canal - BPPV: BBQ Roll to treat the right sideTo treat right horizontal canal (HC)-BPPV (each position maintained for at least 30 seconds or until nystagmus and/or vertigo cease): • First the patient is placed in the long-sitting position • Then in a supine position with the head elevated 30 degrees • Then the patient's head (or whole bod...Benign Paroxysmal Positional Vertigo; BPPV; Horizontal Canal; Lempert 360- (Barbeque) degree roll maneuver; Exam; Examination
2 Horizontal Canal - BPPV: Gufoni for right apogeotropicTo treat the right apogeotropic (beating towards the sky with right ear down and with left ear down - e.g., left beating nystagmus with right supine roll test or with right ear down; right beating nystagmus with left supine roll test or with left ear down) horizontal canal (HC) variant: • The pati...Benign Paroxysmal Positional Vertigo; BPPV; Horizontal Canal; Ageotrophic Gufoni Maneuver; Exam; Examination
3 Pseudo-spontaneous nystagmus and bow and lean test in horizontal canal BPPVThis is a 70-year-old woman presenting to the Emergency Department with positional vertigo that was determined to be due to the apogeotropic variant of right horizontal canal (HC) benign paroxysmal positional vertigo (BPPV). When her head is in a neutral position with the head in axis with the trunk...Benign Paroxysmal Positional Vertigo; BPPV; Horizontal Canal; Jerk nystagmus; Vestibular nystagmus; Head shaking
4 Relationship between semicircular canals and extraocular musclesFigure 1: When stimulated, each of the 6 angular acceleration detecting semicircular canals (3 on the right and 3 on the left) responds with a conjugate eye movement, with the vector(s) indicated below. PC=posterior canal; HC=horizontal (also known as lateral) canal; AC=anterior (also known as super...Extraocular Muscles
5 The apogeotropic variant of horizontal canal BPPVThis is a patient with the apogeotropic (nystagmus beating towards the sky) variant of right horizontal canal (HC) benign paroxysmal positional vertigo (BPPV). In a patient with geotropic (nystagmus beating towards the ground) HC BPPV, by rapidly moving from a sitting to a supine position with the h...BPPV Horizontal, BPPV Diagnosis, Jerk Nystagmus, Vestibular Nystagmus
6 The geotropic variant of horizontal canal BPPVThis is a patient with the geotropic (nystagmus beating towards the ground) variant of left horizontal canal (HC) benign paroxysmal positional vertigo (BPPV). In a patient with geotropic (nystagmus beating towards the ground) HC BPPV, by rapidly moving from a sitting to a supine position with the he...BPPV Horizontal, BPPV Diagnosis, Jerk Nystagmus, Vestibular Nystagmus
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