Background: The HINTS examination is a sensitive
and specific tool for determining whether a patient presenting with an acute
vestibular syndrome has had a stroke. Despite its efficacy, it is often not
used by Emergency Medicine (EM) physicians when assessing patients with
vertigo. Methods: To ascertain why, we surveyed, by
email, physicians registered with the Canadian Association of Emergency
Physicians, to gather information on their practices when assessing patients
with vertigo, and their utilization and perspectives concerning the HINTS
examination. Results: 185 participants responded to
our survey, demographically representative of Canadian EM physicians. The
majority regularly use the HINTS exam in the appropriate setting, but
significant minorities employ the exam inappropriately, such as in patients
without nystagmus, with other neurological findings, or alongside tests for
intermittent vertigo. Misapplication was associated with older age, years of
practice, non-academic practice settings, and less residency training
(p<0.05). The predominant reasons for not using this examination are lack
of confidence in recalling and performing component exam techniques,
particularly the head-impulse test, and doubts about the necessity, safety,
or validity of this examination. Conclusions: HINTS
examination use is limited by lack of provider skill, safety concerns, and
doubts on its validity in excluding stroke when employed by EM
physicians.