Dizzy battery at a glance

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  • Point to remember: Note the Vestibular nerve innervations of Sup and Inf. Vest N.
  • Dizzy battery at a glance

    1. 1. Mohammad S Asghar
    2. 6. <ul><li>Vestibular system consists of two groups of specialized sensory receptors. </li></ul><ul><li>1: Three semicircular canals Lateral or </li></ul><ul><li>horizontal, Posterior or inferior , Superior or </li></ul><ul><li>vertical SSC, which originate from utricle and </li></ul><ul><li>also end at utricle at a dilated end called </li></ul><ul><li>ampulla. </li></ul><ul><li>2: Two otolith organs: Utricular macula and </li></ul><ul><li>saccular macula. </li></ul>
    3. 7. VIII N Cochlear N Vestibular N PTA ABR Ecoch.G Sup. Vest. N Inf. Vest. N Ant.SCC Baseline thresholds Shape of audiogram Retrocochlear pathology/ VEMP may add credibility MD/EH Drop attacks Lat.SCC Utricle Post.SCC Saccule VAT/Positioning Caloric/ Positional VAT/Positioning cVEMP PTA ABR Ecoch.G VEMP VAT ENG oVEMP VAT ENG VEMP Dizzy battery. PTA ABR Ecoch.G ENG VAT oVEMP cVEMP Flow chart oVEMP
    4. 8. <ul><li>There are ten vestibular receptors in both the ears. </li></ul><ul><li>No single test can test all the vestibular receptors </li></ul><ul><li>Therefore to evaluate the full vestibular function dizzy battery approach is recommended. </li></ul>

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