Every ‘heart sink list‘ includes the ‘feeling a bit dizzy, doc‘ presentation. Even with the semantic AI diagnostology probe ramped up to 11…’dizzy‘ remains a word reticent to reveal it’s true identity, until it is too late…
Fear not, for Dr Peter Johns, Canadian emergency physician and dizziness demystifier, has made a video on how to diagnose ‘The Big 3 of Vertigo” in the Emergency Department
The big 3 of vertigo: BPPV; Vestibular neurits; an Cerebellar stroke
Summary: The Big 3 of Vertigo
Dr Johns advocates an organized approach. If there are concerning neurological features; severe head or neck pain; or the patient is unable to stand, they warrant a CT scan and an inpatient stay.
Patients whose vertigo is initiated by movement and only lasts less than 2 minutes at a time are most likely suffering from benign paroxysmal positional vertigo (BPPV) and would benefit from a Dix-Hallpike test followed by treatment with an Epley maneuver.
It is important to note that patients with BPPV do not have nystagmus at rest, also HINTS+ testing is not indicated in this population (reserved for patients with hours or days of vertigo at rest).
In the presence of horizontal canal BPPV on the Dix-Hallpike test, the Gufoni maneuver is advised. HINTS+ testing is not indicated in this population (reserved for patients with hours or days of continuous vertigo.)
Patients with protracted vertiginous symptoms (hours to days) warrant a HINTS+ examination and in the presence of positive features they require imaging and admission to look for a CVA.
There are four components of the HINTS+ exam and each component has either a ‘central’ or ‘peripheral’ result. If any of the components tested have a positive central result, the result is described as HINTS+ central.
|Test of skew||NO vertical skew||Vertical|
|Head Impulse Test||Abnormal||Normal|
|+ Bedside test of hearing||NO new loss||New loss|
If none of the HINTS+ exam point to a central cause then the patient has vestibular neuritis and may be safely discharged.