GUYTON, ARTHUR C., BERRY ABERNATHY,JIMMY B. LANGSTON, BERWIND N. KAUFMANN AND HILTON M. FAIRCHILD. Relative importance of uenous and arterial resistances in controlling uenous return and cardiac output. Am. J. Physiol. I 96 (5) : I 008-1 o I 4. I g5g.-In dogs with cardiovascular reflexes completely blocked by total spinal anesthesia, the total peripheral resistance was increased fiveor more fol...

BACKGROUND Systemic arterial hemodynamics play an important role in the assessment of the severity and hemodynamic consequences of aortic valve stenosis (AVS). METHODS AND RESULTS Systemic vascular resistance, total arterial compliance, effective arterial elastance, and aortic characteristic impedance were derived from high-fidelity catheter recordings of ascending aortic pressure and blood f...

Increased arterial stiffness is thought to contribute to the increased incidence of cardiovascular disease with age. Little, however, is known about the influence of aging on central and peripheral arterial stiffness in females. Moreover, it is unknown whether physical activity status influences age-related increases in arterial stiffness in females. Arterial pulse wave velocity (PWV) and augme...

background: the ductus arteriosus connects the main pulmonary trunk to the descending aorta. the incidence of isolated patent ductus arteriosus (pda) in full-term infants is about 1 in 2000. the amplatzer ductal occluder (ado) is recommended for pdas with sizes larger than 2 mm. in this procedure, we must confirm the ado position in pda by aortogram from the arterial line. the purpose of this s...

OBJECTIVE We previously reported that saturated fat (SAT)-enriched diets increase arterial cholesteryl ester (CE) deposition, especially from LDL-selective uptake (SU), and this was associated with increased arterial lipoprotein lipase (LpL). We now question how n-3 fatty acid rich diets influence arterial cholesterol delivery and arterial LpL levels. METHODS AND RESULTS C57BL/6 mice were fed...

Introduction: Arterial and post-arterial cerebral blood volumes (CBV) have different physiological and functional roles in the brain. Arterial vessels are the major active regulator of cerebral blood flow (CBF), while post-arterial (capillary, venous) vessels mostly dilate passively to accommodate changes in CBF. A change in CBV is one of the primary factors affecting the stimulus evoked BOLD s...

Two competing schools of thought ascribe vascular disease states such as isolated systolic hypertension to fundamentally different arterial system properties. The "windkessel school" describes the arterial system as a compliant chamber that distends and stores blood and relates pulse pressure to total peripheral resistance (R(tot)) and total arterial compliance (C(tot)). Inherent in this descri...

Estudo observacional, transversal e analítico, integrado no Programa de Pressão Arterial da Beira Baixa, cujo principal objetivo é avaliar o perfil tensional a prevalência hipotensão ortostática dos indivíduos adultos concelho do Fundão. A amostra constituída por um total 1030 adultos, residentes em estudo, 511 sexo feminino 519 masculino, selecionados forma aleatória clusters. Para recolha dad...

Arterial blood gas analysis, the focus of this article, provides a fuller and more accurate ”gold standard” assessment of blood oxygenation status. It allows generation, not only of oxygen saturation (in arterial blood) sO2(a), but a number of further oxygen-related parameters, including the partial pressure of oxygen in arterial blood, pO2(a) and the total oxygen concentration of arterial bloo...