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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 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
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