Again, after poliomyelitis, the limb shows a widespread and severe vasospasm, the exact mechanism of which is unclear. Peripheral neuritis of any sort is a sufficient cause of vasoconstriction.

Avoid beta-blockers or use those with alpha blocking properties in patients with coronary vasospasm to avoid “unopposed alpha agonism” which can cause vasoconstriction and worsen the vasospasm.

Transcranial Doppler ultrasound (TCD) demonstrated high blood-flow velocities consistent with vasospasm ... on the neurology floor showed resolving vasoconstriction, with blood-flow velocity ...