Hello Professor, if the pressure is influenced by the volume, shouldn't the volume be at the x-axis (manipulated variable), while the pressure be at the y-axis(responding variable)?
Because this lecture focuses on defining compliance, which is the ratio of volume to pressure, I plotted it in this manner (which is nearly always done for lung compliance). In my other lectures where I talk about ventricular pressure and volume relationships, I plot pressure against volume, which is by convention for heart chamber compliance. With those plots, the compliance is the reciprocal of the press-vol relationship slope. Either press or vol can be independent variables. All 3 variables, press-vol-compliance are therefore interdependent.
wonderful explanation!
Thank you, Dr!
Does that mean, in HFrEF there's an increased compliance of cardiac walls?
Hello Professor, if the pressure is influenced by the volume, shouldn't the volume be at the x-axis (manipulated variable), while the pressure be at the y-axis(responding variable)?
Because this lecture focuses on defining compliance, which is the ratio of volume to pressure, I plotted it in this manner (which is nearly always done for lung compliance). In my other lectures where I talk about ventricular pressure and volume relationships, I plot pressure against volume, which is by convention for heart chamber compliance. With those plots, the compliance is the reciprocal of the press-vol relationship slope. Either press or vol can be independent variables. All 3 variables, press-vol-compliance are therefore interdependent.
There are very useful plssss
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