Title : Relationship between vasodilatation and cerebral blood flow increase in impaired hemodynamics: a PET study with the acetazolamide test in cerebrovascular disease.

Pub. Date : 2003 Dec

PMID : 14660711






7 Functional Relationships(s)
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1 UNLABELLED: The changes in cerebral blood flow (CBF) and arterial-to-capillary blood volume (V(0)) induced by acetazolamide (ACZ) are expected to be parallel each other in the normal circulation; however, it has not been proven that the same changes in those parameters are observed in patients with cerebrovascular disease. Acetazolamide CCAAT/enhancer binding protein zeta Rattus norvegicus
2 UNLABELLED: The changes in cerebral blood flow (CBF) and arterial-to-capillary blood volume (V(0)) induced by acetazolamide (ACZ) are expected to be parallel each other in the normal circulation; however, it has not been proven that the same changes in those parameters are observed in patients with cerebrovascular disease. Acetazolamide CCAAT/enhancer binding protein zeta Rattus norvegicus
3 RESULTS: The regional CBF (rCBF) and V(0) increased significantly after ACZ administration in the hemisphere contralateral to the ischemic side. Acetazolamide CCAAT/enhancer binding protein zeta Rattus norvegicus
4 RESULTS: The regional CBF (rCBF) and V(0) increased significantly after ACZ administration in the hemisphere contralateral to the ischemic side. Acetazolamide CCAAT/enhancer binding protein zeta Rattus norvegicus
5 A parameter defined by the rCBF/V(0) ratio decreased significantly in the ipsilateral hemisphere of group A after ACZ administration, although the ratio showed no change in the contralateral hemisphere or in the other subgroup (group B). Acetazolamide CCAAT/enhancer binding protein zeta Rattus norvegicus
6 CONCLUSION: The change in the rCBF/V(0) ratio after ACZ challenge may represent an alteration in arterial perfusion pressure that is expected to indicate a critical hemodynamic status in patients with cerebrovascular disease, especially in patients who have a reduced rCBF response. Acetazolamide CCAAT/enhancer binding protein zeta Rattus norvegicus
7 CONCLUSION: The change in the rCBF/V(0) ratio after ACZ challenge may represent an alteration in arterial perfusion pressure that is expected to indicate a critical hemodynamic status in patients with cerebrovascular disease, especially in patients who have a reduced rCBF response. Acetazolamide CCAAT/enhancer binding protein zeta Rattus norvegicus