منابع مشابه
Relative changes of cerebral arterial and venous blood volumes during increased cerebral blood flow: implications for BOLD fMRI.
Measurement of cerebral arterial and venous blood volumes during increased cerebral blood flow can provide important information regarding hemodynamic regulation under normal, pathological, and neuronally active conditions. In particular, the change in venous blood volume induced by neural activity is one critical component of the blood oxygenation level-dependent (BOLD) signal because BOLD con...
متن کاملVenous flow velocity, venous volume and arterial blood flow.
The relationship of arterial blood flow and venous volume to venous flow velocity was studied in normal subjects. The effects of current modes of treatment in venous thrombosis and of a vasodilator drug on venous flow velocity were also investigated. Total calf flow and venous volume were measured by venous occlusion plethysmography while venous flow axial velocity was determined by the transit...
متن کاملArterial Chemoreceptors on Cerebral Blood
say. J Clin Endocrinol Metab 27: 973-990, 1967 16. 13. Brecher G, Cronkite EP: Morphology and enumeration of human blood platelets. J Appl Physiol 3: 365-377, 1950 14. Baumgartner HR: Eine neue Methode zur Erzengung von Thromben 17. durch gesielte uberdehnung der Gefasswant. Z Ges Exp Med 137: 227-249, 1963 15. Stemerman MB, Spaet TH, Pitlick F, Cintron J, Lejnieks I, Tiell ML: 18. The pattern ...
متن کاملHuman Cerebral Arterio-venous Vasoactive Exchange during Alterations in Arterial Blood Gases Running Title: Cerebral Vasoactive Agents and Arterial Blood Gases
Cerebral blood flow (CBF) is highly regulated by changes in arterial PCO 2 and arterial PO 2. Evidence from animal studies indicates that various vasoactive factors, including release of noradrenaline, endothelin, adrenomedullin, C-natriuretic peptide (CNP) and nitric oxide (NO), may play a role in arterial blood gas-induced alterations in CBF. For the first time, we directly quantified exchang...
متن کاملComparison of blood gas values in arterial and venous blood.
OBJECTIVE To compare pH and PCO2 values of simultaneously obtained arterial, arterialized capillary, and venous blood samples and also to compare oxygen saturation (ASaO2) measured in arterial blood and oxygen saturation by pulse oximetry (PSaO2). METHODS Prospective study was done in the children admitted in the Pediatric Intensive Care Unit of Christian Medical College Hospital Vellore, req...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1942
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(18)45018-1