Arrhythmias and Hemodynamics

hormones and hemodynamics in pregnancy

context: normal pregnancy is associated with sodium and water retention, which results in plasma volume expansion prior to placental implantation. the explanation offered for these events is that pregnancy ‘resets’ both volume and osmoreceptors. evidence acquisition: the mechanisms for such an enigmatic ‘resetting’ in pregnancy have not previously been explained. however, recent human pregnancy...

Blood rheology and hemodynamics.

Blood is a two-phase suspension of formed elements (i.e., red blood cells [RBCs], white blood cells [WBCs], platelets) suspended in an aqueous solution of organic molecules, proteins, and salts called plasma. The apparent viscosity of blood depends on the existing shear forces (i.e., blood behaves as a non-Newtonian fluid) and is determined by hematocrit, plasma viscosity, RBC aggregation, and ...

Hemodynamics and Prognosis

Clinical and hemodynamic manifestations of overt right ventricular infarction differ markedly from those that involve injury confined exclusively to the left ventricle. However, the frequency of covert right ventricular infarction and its influence on overall enzymatically estimated infarct size, hemodynamics and prognosis have not been characterized. Accordingly, 249 patients with transmural a...

Hemorheology and Hemodynamics

Hemodynamics and Ventricular Function

The feasibility of using continuous on-line recording of intraventricular electrical impedance to measure ventricular stroke volume was assessed in 12 patients at cardiac catheterization with a multielectrode impedance catheter and a 1.3 kHz measuring current of 4 ,A. Stroke volumes determined by electrical impedance were compared with stroke volumes determined by the thermodilution technique i...