Cerebral versus systemic hemodynamics during graded orthostatic stress in humans.
BD Levine, CA Giller, LD Lane, JC Buckey… - Circulation, 1994 - Am Heart Assoc
BACKGROUND Orthostatic syncope is usually attributed to cerebral hypoperfusion
secondary to systemic hemodynamic collapse. Recent research in patients with
neurocardiogenic syncope has suggested that cerebral vasoconstriction may occur during
orthostatic hypotension, compromising cerebral autoregulation and possibly contributing to
the loss of consciousness. However, the regulation of cerebral blood flow (CBF) in such
patients may be quite different from that of healthy individuals, particularly when assessed …
secondary to systemic hemodynamic collapse. Recent research in patients with
neurocardiogenic syncope has suggested that cerebral vasoconstriction may occur during
orthostatic hypotension, compromising cerebral autoregulation and possibly contributing to
the loss of consciousness. However, the regulation of cerebral blood flow (CBF) in such
patients may be quite different from that of healthy individuals, particularly when assessed …
[PDF][PDF] Cerebral Versus Systemic Hemodynamics During Graded Orthostatic Stress in Humans
JC Buckey, CG Blomqvist - 1994 - Citeseer
Background Orthostatic syncope is usually attributed to cerebral hypoperfusion secondary to
systemic hemodynamic collapse. Recent research in patients with neurocardiogenic
syncope has suggested that cerebral vasoconstriction may occur during orthostatic
hypotension, compromising cerebral autoregulation and possiblycontributing to the loss of
con-sciousness. However, the regulation of cerebral blood flow (CBF) in such patients may
be quite different from thatof healthy individuals, particularly when assessed during the …
systemic hemodynamic collapse. Recent research in patients with neurocardiogenic
syncope has suggested that cerebral vasoconstriction may occur during orthostatic
hypotension, compromising cerebral autoregulation and possiblycontributing to the loss of
con-sciousness. However, the regulation of cerebral blood flow (CBF) in such patients may
be quite different from thatof healthy individuals, particularly when assessed during the …
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