Laboratory studies, including a glucose tolerance test, electrocardiogram ... The distal portion of the right vertebral artery is filling retrogradely. The proximal left subclavian artery is ...
Vertebral-Artery Stenosis Confined to the Orifice ... Laboratory examination, including total cholesterol and glucose tolerance test (GTT) revealed no abnormalities. X-ray study of the chest ...
Unbeknown to Ian, the "violent" sneeze had caused a tear in the inner lining of the vertebral artery - a condition known as a vertebral artery dissection (VAD) - that then led to a stroke.
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