Dix-Hallpike maneuver results are not influenced by the time of day of the test.
CONCLUSIONS
The result of the DH maneuver does not appear to be affected by the time of day at which it is performed. OBJECTIVE. To determine whether the time of day at which the Dix-Hallpike (DH) maneuver is performed influences the result.


METHODS
This was a retrospective study. We reviewed the records of all electronystagmagrams (n = 1220) performed at our facility between January 2001 and January 2003, looking at the results of the DH maneuver, the medical history of the patients and the time of day of the test. The distribution of the time of day at which the DH maneuver was performed and induced a positive response was compared to the distribution of the time of day at which all the tests were performed.


RESULTS
The distribution of the times during the day when the DH maneuver was positive was not statistically different from that when the DH maneuver was negative.
Kramer
Phillip D
PD
The New Jersey Neuroscience Institute, Seton Hall University, JFK Medical Center, Edison, New Jersey 08875, USA. pkramer@solarishs.org
Kleiman
David A
DA
D002150:Caloric Tests; D002940:Circadian Rhythm; D004584:Electronystagmography / Q000379:methods; D006801:Humans; D011187:Posture; D012189:Retrospective Studies; D012665:Semicircular Canals / Q000503:physiopathology; D013995:Time; D014717:Vertigo / Q000175:diagnosis* / Q000209:etiology / Q000503:physiopathology*