The collapse and loss of consciousness that occur during fainting or syncope are due to the abrupt cutting off of the energy substrates to the cerebral cortex. This is usually through a sudden decrease in cerebral perfusion by oxygenated blood from a reduction in cerebral blood flow itself, a ...
Unrecorded data included high risk features that should be the basis for TLoC admissions; family history of premature death (40%), collapse during exertion (20%), new or unexplained dyspnoea (18%).Although 82% had a CXR and 76% received CT head, 84% had no recorded postural BP and 24...