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Pressure–volume Loop Analysis In Cardiology
A plot of a system's Pressure-volume curves, pressure versus volume has long been used to measure the work done by the system and its efficiency. This analysis can be applied to heat engines and pumps, including the heart. A considerable amount of information on cardiac performance can be determined from the ''pressure vs. volume'' plot (pressure–volume diagram). A number of pressure–volume loop experiments, methods have been determined for measuring PV-loop values experimentally. Cardiac pressure–volume loops Real-time Ventricle (heart), left ventricular (LV) pressure–volume loops provide a framework for understanding cardiac mechanics in experimental animals and humans. Such loops can be generated by real-time measurement of pressure and volume within the left ventricle. Several physiologically relevant Hemodynamics, hemodynamic parameters such as stroke volume, cardiac output, ejection fraction, myocardial contractility, etc. can be determined from these loops. To gen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pressure-volume Curves
In ecology, pressure-volume curves describe the relationship between total water potential (Ψt) and relative water content (R) of living organisms. These values are widely used in research on plant-water relations, and provide valuable information on the turgor, osmosis, osmotic and Elastic deformation, elastic properties of plant tissues. According to the Boyle–v'ant Hoff Relation, the product of osmotic potential and volume of solution should be a constant for any given amount of osmotically active solutes in an ideal osmotic system. \psi_0\mathit(V)\! = A constant \psi_0\! is osmotic potential and \mathit(V)\! is volume of solution. This can then be manipulated to a linear relation which describes the ideal situation: \psi_0\! = \dfrac{1}V\! \times A constant (mathematics), constant Membrane biology ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
