Blood Flow
نویسندگان
چکیده
منابع مشابه
Blood Flow
Background. Although aspirin exerts beneficial antiplatelet activity in patients with coronary artery disease, cyclooxygenase blockade produced by aspirin causes a potentially deleterious effect by interrupting endothelial production of prostacyclin. Collateral vessels that develop in response to coronary occlusion display prominent endothelial cell proliferation and undergo vasoconstriction in...
متن کاملAortic Stiffening, Aortic Blood Flow Reversal, and Renal Blood Flow.
N ormal arterial aging is characterized by arterial enlargement , wall thickening, and stiffening, which predominates at large arteries. 1 Patients with chronic kidney disease (CKD) have an early vascular aging, 2 characterized by an accelerated arterial enlargement and stiffening, which occurs in parallel with the decline in glomerular filtration rate (GFR). 3 The relationships between central...
متن کاملMyocardial Blood Flow and Flow Reserve
Background. Aging is associated with changes of the systolic blood pressure that may increase cardiac work and myocardial blood flow at rest and reduce the myocardial flow reserve. This might be misinterpreted as age-related impairment of the coronary vasodilator capacity. Methods and Results. Myocardial blood flow was quantified at rest and after administration of intravenous dipyridamole in 4...
متن کاملRegional Cortical Blood Flow
We conducted regional cortical blood flow studies using the xenon-133 clearance technique on 12 volunteers during the administration of 25% and 50% N2O and during baseline conditions (breathing room air or 100% O2). Global cortical blood flow was very highly significantly increased above baseline measures in all subjects by 50% N2O (mean increase 37% above 100% O2 condition). A smaller but stil...
متن کاملMyocardial Blood Flow
We examined the ability of individual regions of the canine left ventricle to increase blood flow relative to baseline rates of perfusion. Regional coronary flow was measured by injecting radioactive microspheres over 90 seconds in seven anesthetized mongrel dogs. Preliminary experiments demonstrated a correlation between the regional distributions of blood flow during asphyxia and pharmacologi...
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ژورنال
عنوان ژورنال: Nature
سال: 1968
ISSN: 0028-0836,1476-4687
DOI: 10.1038/2191190b0