This left ventricular pressure volume (P-V) loop shows two loops superimposed on one graph.
Point 4-1 is period of filling, Point 1 corresponds to end diastolic volume.
Point 2 corresponds to AV opening.
The phase between points 2 and 3 is known as the ejection phase
Point 3 corresponds to AV closure
Phase 3-4 is the ejection phase of ventricular relaxation
Point 4 â€“ MV opening, the volume corresponds to end systolic volume.
Stroke volume is the width of the P-V loop, labelled as SV on the loop. It is the difference between end diastolic volume and end systolic volume
So, in the figure ESV =70, EDV = 140. EF = ESV/EDV % = 70/140% = 50%
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MCQs – Quiz 3.0 is a unique attempt to practice recent MCQs (2001 – 2017), which can be filtered Examwise, Subjectwise &/or Topicwise in Quiz form.
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