The questions of leukocyte adhesion to endothelium and motion of leukocytes in blood flow are important to treatment of many diseases occurring at vascular level. In the present study an overview of the literature of cell mechanics and cell adhesion as a multistage process that influence the microcirculation is done. These processes are characterized with some parameters, as a mean blood flow v...

Abstract Introduction: There are many studies about the inhibitory effect of the esophageal distention (ED) on gastric motility. Recently, it has been shown that ED decreases the gastric secretions. It is well established that the inhibitory effect of ED is mediated by activation of vago-vagal inhibitory reflex. However, there is not any investigation about the effect of the reflex on the gast...

Ultrasound was used to measure growth of the spiny mouse fetus throughout gestation and to record Doppler measurements of heart rate and umbilical blood flow to monitor fetal blood supply and wellbeing. Female spiny mice were anesthetized on 6 occasions throughout pregnancy. Ultrasound was performed with a Philips HDI 5000 machine using a compact linear CL15-7 transducer. Fetal heart rate and g...

A LTHOUGH the status of regional vascular tone and total cardiac output have been established as important determinants of regional blood flow, the precise role of the physical state of circulating blood has not been extensively explored. A study by Kety' in man has indicated that the increased corpuscular mass of polyeythemia vera can be associated with a reduced cerebral blood flow. The induc...

To study the effect of herb ginger powder on performance, carcass characteristics and blood parameters of broilers used from 192 broiler chicks (Ross ) in a completely randomized design with 4 treatments and 4 replicates ( each replicate of 12 chicks ). All treatments, including different levels of ginger powder ratios of 0, 0.5, 1, 1.5 percent respectively called T1, 2T, T3 and T4 that were ad...

PURPOSE To directly compare and study the variability of parameters related to hepatic blood flow measurements using 3 T phase-contrast magnetic resonance imaging (PC-MRI) and Doppler ultrasound (US). MATERIALS AND METHODS Nine healthy subjects were studied. Blood velocities and flow rate measurements were performed in the portal vein and the proper hepatic artery. MR studies were performed u...

a pressor response to the Valsalva maneuver. Beat-to-beat changes in stroke volume, blood pressure, pulse pressure, peak blood flow, duration of systole, duration of ejection, and heart rate were calculated. Stroke volume and blood pressure rose with the onset of straining; blood pressure rose slightly further as stroke volume fell to below control levels at the end of the straining period. Pul...

Background: Heart attack and stroke are among the leading causes of death in industrial nations but the number of candidates needing a transplant exceeds the number of transplants performed. Due to this chronic shortage, blood pumps are needed to deliver appropriate hydraulic performance while maintaining physiological flow conditions. Because all known artificial materials are considered to be...

Paroxysmal supraventricular tachycardia is accompanied by hypotension, which can affect vascular hemodynamics. Here, we hypothesized that a fall in blood flow as a result of hypotension has a larger effect on hemodynamics in medium-sized peripheral arteries compared with increased pulsatility in rapid pacing. To test this hypothesis, we experimentally and theoretically investigated hemodynamic ...

Transposition of the Great Arteries After Arterial Switch Operation To the Editor: Oskarsson et al1 recently reported normal coronary flow reserve (CFR) in children with transposition of the great arteries after anatomic repair assessed by intracoronary Doppler FloWire (Cardiometrics, Inc). CFR can be measured by several techniques, each one with distinct advantages and limitations. An importan...