Zobrazeno 1 - 10
of 12
pro vyhledávání: '"D K Bogen"'
Autor:
S T, Kelley, R, Malekan, J H, Gorman, B M, Jackson, R C, Gorman, Y, Suzuki, T, Plappert, D K, Bogen, M G, Sutton, L H, Edmunds
Publikováno v:
Circulation. 99:135-142
Background —Expansion of an acute myocardial infarction predicts progressive left ventricular (LV) dilatation, functional deterioration, and early death. This study tests the hypothesis that restraining expansion of an acute infarction preserves LV
Publikováno v:
American Journal of Physiology-Heart and Circulatory Physiology. 266:H228-H234
Previous studies of ventricular interaction have quantified interaction by making small pressure or volume changes in one ventricle and measuring the resulting pressure or volume changes in the opposite ventricle. The ratios between the pressure and
Publikováno v:
The Journal of thoracic and cardiovascular surgery. 104(4)
The hypothesis that nonischemic distention of the arrested, flaccid ventricle causes myocardial creep and reduces ventricular contractile force was tested in 16 sheep. Left ventricular volume was calculated from ultrasonic dimension transducers spann
Autor:
E B, Savage, S W, Downing, M B, Ratcliffe, M, Fallert, K B, Gupta, G S, Tyson, D K, Bogen, L H, Edmunds
Publikováno v:
The Journal of thoracic and cardiovascular surgery. 104(3)
Anteroapical left ventricular aneurysms were produced in 23 sheep by coronary arterial ligation. Plication of the aneurysm does not change stroke volume or cardiac output and does not significantly change left ventricular oxygen consumption from the
Publikováno v:
The Journal of thoracic and cardiovascular surgery. 101(2)
We measured the effects of left ventricular circulatory assistance on ventricular mechanics of ejecting sheep hearts before and after global ischemia. Flows from left atrium to femoral artery ranged between 20 and 100 ml/kg/min during circulatory ass
Autor:
J E, Bavaria, S, Furukawa, G, Kreiner, M B, Ratcliffe, J, Streicher, D K, Bogen, L H, Edmunds
Publikováno v:
The Journal of thoracic and cardiovascular surgery. 100(2)
We tested in 20 sheep the hypothesis that oxygen consumption increases after reversible, global myocardial ischemia. Left ventricular oxygen consumption before and after 25 minutes of warm (37 degrees C) global ischemia was linearly related to a func
Publikováno v:
Ferroelectrics. 86:311-324
Biological cells, sickled human erythrocytes in particular, have been observed to undergo pronounced shape changes (deformation) when subjected to low frequency electrical fields. It has been suggested that the observed deformation is due to the mech
Publikováno v:
Circulation Research. 47:728-741
An isotropic, initially spherical, membrane model of the infarcted ventricle satisfactorily predicts ventricular function in the infarcted heart when compared to clinical information and available ventricular models of higher complexity. Computations
Publikováno v:
American Journal of Physiology-Heart and Circulatory Physiology. 249:H585-H593
Peak systolic elastance (Emax) was measured in the intact canine circulation by means of a new experimental technique. In this technique the heart is isolated from the circulation during a single systole and subjected to controlled ventricular loads.
Autor:
D. K. Bogen
Publikováno v:
Journal of biomechanical engineering. 109(3)
Strain energy functions are derived from biphasic soft tissue models in order to describe large-deformation, large-swelling, elastic behavior of nonlinear materials. The resulting analysis leads to calculations of stress-extension relations and tissu