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  2. Ejection fraction - Wikipedia

    en.wikipedia.org/wiki/Ejection_fraction

    An ejection fraction (EF) is the volumetric fraction (or portion of the total) of fluid (usually blood) ejected from a chamber (usually the heart) with each contraction (or heartbeat). It can refer to the cardiac atrium , [ 1 ] ventricle , [ 2 ] gall bladder, [ 3 ] or leg veins, [ 4 ] although if unspecified it usually refers to the left ...

  3. Pressure–volume loop analysis in cardiology - Wikipedia

    en.wikipedia.org/wiki/Pressure–volume_loop...

    Myocardial infarction or cardiomyopathy causes damage to the myocardium, which impairs the heart's ability to eject blood and, therefore, reduces ejection fraction. This reduction in the ejection fraction can manifest itself as heart failure. Low EF usually indicates systolic dysfunction, and severe heart failure can result in EF lower than 0.2 ...

  4. Pressure–volume loop experiments - Wikipedia

    en.wikipedia.org/wiki/Pressure–volume_loop...

    Several parameters can be calculated for each loop (e.g. end-diastolic pressure, end-systolic pressure, ejection and filling intervals, contractility index, stroke volume, and ejection fraction). More importantly, other interesting parameters are derived from series of loops obtained under changing conditions.

  5. Ventricle (heart) - Wikipedia

    en.wikipedia.org/wiki/Ventricle_(heart)

    Fractional shortening (FS) is the fraction of any diastolic dimension that is lost in systole. When referring to endocardial luminal distances, it is EDD minus ESD divided by EDD (times 100 when measured in percentage). [ 25 ]

  6. Stroke volume - Wikipedia

    en.wikipedia.org/wiki/Stroke_volume

    Stroke volume is an important determinant of cardiac output, which is the product of stroke volume and heart rate, and is also used to calculate ejection fraction, which is stroke volume divided by end-diastolic volume. Because stroke volume decreases in certain conditions and disease states, stroke volume itself correlates with cardiac function.

  7. Pulse pressure - Wikipedia

    en.wikipedia.org/wiki/Pulse_pressure

    Pulse pressure is calculated as the difference between the systolic blood pressure and the diastolic blood pressure. [3] [4]The systemic pulse pressure is approximately proportional to stroke volume, or the amount of blood ejected from the left ventricle during systole (pump action) and inversely proportional to the compliance (similar to elasticity) of the aorta.

  8. End-diastolic volume - Wikipedia

    en.wikipedia.org/wiki/End-diastolic_volume

    Ejection fraction: 66% (± 6%) [2] 67% (± 4.6%) [3] Heart rate: 60–100 bpm [4] 60–100 bpm [4] Cardiac output: 4.0–8.0 L/minute [5] 4.0–8.0 L/minute [5]

  9. Pressure–volume diagram - Wikipedia

    en.wikipedia.org/wiki/Pressure–volume_diagram

    A PV diagram plots the change in pressure P with respect to volume V for some process or processes. Typically in thermodynamics, the set of processes forms a cycle, so that upon completion of the cycle there has been no net change in state of the system; i.e. the device returns to the starting pressure and volume.