Ventricular pressure volume loop : An animated fusion Image
Ventricular pressure volume loop is an Important ( often feared !) concept to learn for cardiology fellows . . . I would say , It is not that hard to understand !
These loops tell us the secret hemodynamic story of a 300 gram “mass of muscle” called the heart and how It handles about 100 ml of blood every beat and successfully ejects around 70 ml into Aorta and Pulmonary artery *
While doing this life sustaining job , It would seem the heart muscle conducts a perfect, non stop, hemodynamic orchestra with 4 electro-mechanically coupled phases which is depicted as classical ventricular pressure volume loop. Mind you, this loop is plotted pressure volume data from a single heart beat and it can’t be time correlated with heart sounds or ECG as the two parameters loop around in same time cycle.
Watch this animation , carefully and read the appearing annotation that come along with each phase.That should suffice to understand the basic. (For Audio version go the video link in the reference )
Modified from a clipping from Giphy.com.Original source of this Image is not located. Whoever has done this thanks and it’s a great attempt.(I have tried a fusion Image of doppler mitral Inflow in diastole and Aortic pressure curve during ssytole to bring PV loop an anatomical perspective.)
*Note: When we say PV loop it means about by LV by default . We do have seperate RV ,LA (even RA?) PV loops.
Is there clinical application for PV loops ?
It may not have a...
Source: Dr.S.Venkatesan MD - Category: Cardiology Authors: dr s venkatesan Tags: Cardiology - Animations cardiology physiology phases of cardiac cycle physiology of heart contraction pressure volume loop normal wiggers cardiac cycle Source Type: blogs
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