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CALORIC TESTING.pptx
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Caloric testing provides information about the function of the vestibular portion of the eighth cranial nerve and aids in the diagnosis of cerebellum and brainstem lesions Patency of the external auditory canal is confirmed The client is positioned supine with the head of the bed elevated 30 degrees Cold or warm water is instilled into the auditory canal to stimulate the semicircular canals A normal response that indicate intact function of cranial nerves III, VI and VIII is conjugate eye movements toward the side being irrigated, followed by rapid nystagmus to the opposite side Absent or dysconjugate eye movements indicate brainstem damage
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CALORIC TESTING.pptx
- CALORIC TESTING
- DESCRIPTION Caloric testing provides information about the function of the vestibular portion of the eighth cranial nerve and aids in the diagnosis of cerebellum and brainstem lesions
- PROCEDURE Patency of the external auditory canal is confirmed The client is positioned supine with the head of the bed elevated 30 degrees Cold or warm water is instilled into the auditory canal to stimulate the semicircular canals A normal response that indicate intact function of cranial nerves III, VI and VIII is conjugate eye movements toward the side being irrigated , followed by rapid nystagmus to the opposite side Absent or dysconjugate eye movements indicate brainstem damage
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