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Dix Hallpike
Dix-Hallpike is performed over a stretcher that allows lying down and sitting the
patient quickly. The Dix-Hallpike maneuver is performed by turning a patient’s head to
the right or left and then briskly assisting him or her to a supine position with the head
hanging to the right or left. The patient is left in this position for a brief period while
eye movements are observed.
Finally, the patient is returned to a sitting position.The testing is conducted whit
fixation suppression (goggles covered).
This test records the patient position and plots the eyes movements
Calorics
The patient is placed in a reclining position with his or her head at a 30° angle. This
position orients the lateral semicircular canals in the most vertical plane.
Careful otoscopic examination allows the stimulus to be directed appropriately
and at an equivalent depth in each ear canal.
Protocol for caloric stimulation, alternating binaural bithermal caloric stimulation
includes the following conditions:
• Leftearwarm (LW)
• Righteararm (RW)
• Leftearcool (LC)
• Rightearcool (RC)
During each stimulation, the cool or warm stimulus is delivered for a preset time that
is determined by the type of stimulus and normative data. The countdown timershows
the warm or cold stimulation time and recovery times.The testing is conducted whit
fixation suppression (goggles occludes)
Important: It should explore the ears (outer and middle) before proceeding with the
caloric test
(See Patient Considerations: Status of the outer and middle ear)
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