What Researchers Did
Researchers reported the case of a 47-year-old man who presented with acute left vestibular dysfunction suggestive of inner ear decompression sickness after scuba diving.
What They Found
Despite initial suspicion of inner ear decompression sickness, normal videonystagmography and a delayed occipital headache led to a brain MRI, which confirmed a recent ischaemic infarction in the posterior inferior cerebellar artery territory. Further investigations revealed a patent foramen ovale with an atrial septal aneurysm in this 47-year-old man, with no other cardiovascular risk factors.
What This Means for Canadian Patients
This case suggests that cerebellar infarction can mimic inner ear decompression sickness following scuba diving, even in patients without typical cardiovascular risk factors. Canadian clinicians should consider cerebellar infarction in divers presenting with vestibular symptoms, especially if initial treatments are ineffective or atypical signs like headache are present.
Canadian Relevance
This study has no direct Canadian connection as it is a case report from outside Canada. However, the diagnostic challenge it highlights is relevant to Canadian emergency physicians and diving medicine specialists.
Study Limitations
As a single case report, the findings are not generalizable to a broader patient population and cannot establish causality or prevalence.