Eyes, Ears, Nose and Throatmiddle twist
A 59-year-old man presents with eight hours of continuous vertigo, vomiting and difficulty walking. He has spontaneous right-beating nystagmus and no hearing loss, tinnitus, limb weakness, dysarthria or sensory symptoms. The examiner is experienced in bedside vestibular examination, and the vertigo is not triggered only by head position. Which bedside assessment is most appropriate next?