نتایج جستجو برای: showed hyperemia
تعداد نتایج: 999723 فیلتر نتایج به سال:
Endothelial dysfunction is a crucial feature in the evolution of atherosclerosis. Adiponectin is an adipocyte-specific plasma protein with antiatherogenic and antidiabetic properties. In the present study, we investigated the relation between adiponectin and endothelium-dependent vasodilation. We analyzed endothelial function in 202 hypertensive patients, including those who were not taking any...
We attempted to ameliorate postischemic edema and brain tissue injury in cats by administering aminophylline to reduce the reactive hyperemia that supposedly aggravates both these sequelae. Forty-one cats were subjected to 1 hour of middle cerebral artery occlusion and were killed after 3 hours, 3 days, or 14 days of recirculation; one half of the cats received 0.916 ml/kg of a 25 mg/ml solutio...
Functional neuroimaging uses activity-dependent changes in cerebral blood flow to map brain activity, but the contributions of presynaptic and postsynaptic activity are incompletely understood, as are the underlying cellular pathways. Using intravital multiphoton microscopy, we measured presynaptic activity, postsynaptic neuronal and astrocytic calcium responses, and erythrocyte velocity and fl...
BACKGROUND We studied the hemodynamic response to intravenous adenosine on calculation of fractional flow reserve (FFR). Intravenous adenosine is widely used to achieve conditions of stable hyperemia for measurement of FFR. However, intravenous adenosine affects both systemic and coronary vascular beds differentially. METHODS AND RESULTS A total of 283 patients (310 coronary stenoses) underwe...
A previous nonblinded study has suggested beneficial effects from hyperbaric oxygen treatment of superficial partial-thickness radiation burns in human volunteers. This protocol was designed to either confirm or challenge these previous findings in a randomized, blinded format. Twelve healthy, nonsmoking volunteers (7 males, 5 females) participated. All were screened for contraindications to hy...
Objective : to evaluate the incidence and severity of thoracic aortic calcification, relationship with endothelial dysfunction fibroblast growth factor in patients resistant arterial hypertension. Materials methods study involved 92 Daily monitoring blood pressure (ABPM) was performed, functional state endothelium assessed a sample reactive hyperemia, calcium index (CI) aorta determined using M...
AIM Reactive hyperemia peripheral arterial tonometry (RH-PAT) can be used to noninvasively assess the vascular function with respect to the digital microcirculation. Abnormalities are associated with coronary endothelial dysfunction. We therefore investigated whether impaired digital reactive hyperemia is associated with restenosis after percutaneous coronary intervention (PCI) in patients with...
BACKGROUND The assessment of functional coronary lesion severity using intracoronary physiological parameters such as coronary flow velocity reserve and the more widely used fractional flow reserve relies critically on the establishment of maximal hyperemia. We evaluated the diagnostic accuracy of the stenosis resistance index during nonhyperemic conditions, baseline stenosis resistance index, ...
AIM This prospective study was undertaken to determine how peripheral atherosclerotic disease influences the flow in the deep veins of the leg. MATERIAL AND METHOD Thirty one subjects with peripheral atherosclerotic disease and 23 age matched control subjects were studied. The popliteal vein flow velocity was measured at rest and during reactive hyperemia by means of color duplex ultrasound s...
characteristics of the myocardium. Am. J. Physiol. 1gg(6) : I 1431149. 1g6o.-Blood flow before and after occlusion of cannulated left circumflex coronary arteries of anesthetized openchest dogs was studied using a continuously recording rotameter. Fiveto one hundred and eighty-second occlusion periods were performed. Flow in excess of control flow (reactive hyperemia), peak flow, and duration o...
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