Related Experiment Video
Updated: Sep 7, 2025
Testing of all Six Semicircular Canals with Video Head Impulse Test Systems
Published on: April 18, 2019
Immediate repeated testing (IRT) for BPPV: A cost-effective examination
Mariam H Mella1, Elena Al Hakim1, Jihad Khoury1
1Department of Otolaryngology Saint George Hospital University Medical Center Beirut Lebanon.
Objective:
To show that a negative Dix-Hallpike test or Pagnini-McClure test may convert into positive after head shaking in cases of semicircular canalith jam.
Methods:
This is a retrospective study, where 768 cases of BPPV were studied of which 36 were found to have canalith jam.
Results:
Thirty-six patients (4.7%) presented with canalith jam; 4.8% of posterior canal BPPV and 3.7% of lateral canal BPPV were attributed to canalith jam.
Conclusion:
Immediate repeated testing for BPPV allows us to identify undiagnosed cases of BPPV where canalith jam has occurred. It is a cost-effective technique that provides benefits for clinicians, patients, and the healthcare system.
