page_title: Pressure–volume loop analysis in cardiology
section_title: Cardiac pressure–volume loops
hierarchical_section_title: Pressure–volume loop analysis in cardiology / Cardiac pressure–volume loops
caption_attribution_description: English: Pressure-Volume Loop with stages of cardiac cycle.
context_page_description: A plot of a system's 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. A number of methods have been determined for measuring PV-loop values experimentally.
context_section_description: Real-time 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 hemodynamic parameters such as stroke volume, cardiac output, ejection fraction, myocardial contractility, etc. can be determined from these loops.
  To generate a PV loop for the left ventricle, the LV pressure is plotted against LV volume at multiple time points during a single cardiac cycle.
caption: Figure 1: Idealized pressure–volume diagram featuring cardiac cycle components.
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