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  2. Diastolic function - Wikipedia

    en.wikipedia.org/wiki/Diastolic_function

    In clinical cardiology the term "diastolic function" is most commonly referred as how the heart fills. [1] Parallel to "diastolic function", the term " systolic function" is usually referenced in terms of the left ventricular ejection fraction (LVEF), which is the ratio of stroke volume and end-diastolic volume . [ 2 ]

  3. Frank–Starling law - Wikipedia

    en.wikipedia.org/wiki/Frank–Starling_law

    Cardiac function curve.In diagrams illustrating the Frank–Starling law of the heart, the y-axis often describes the stroke volume, stroke work, or cardiac output.The x-axis often describes end-diastolic volume, right atrial pressure, or pulmonary capillary wedge pressure.

  4. Diastole - Wikipedia

    en.wikipedia.org/wiki/Diastole

    Effects of impaired diastolic function [ edit ] Brain natriuretic peptide (BNP) is a cardiac neurohormone secreted from ventricular myocytes (ventricular muscle cells) at the end of diastole—this in response to the normal, or sub-normal (as the case may be), stretching of cardiomyocytes (heart muscle cells) during systole.

  5. Heart failure with preserved ejection fraction - Wikipedia

    en.wikipedia.org/wiki/Heart_failure_with...

    Heart failure with preserved ejection fraction (HFpEF) is a form of heart failure in which the ejection fraction – the percentage of the volume of blood ejected from the left ventricle with each heartbeat divided by the volume of blood when the left ventricle is maximally filled – is normal, defined as greater than 50%; [1] this may be measured by echocardiography or cardiac catheterization.

  6. E/A ratio - Wikipedia

    en.wikipedia.org/wiki/E/A_ratio

    Heart rate and rhythm - loss of a normal atrial rhythm (e.g., atrial fibrillation causes loss of the A wave). The height of the E wave becomes dependent on the length of the cardiac cycle (variable) rather than a measure of diastolic function. Similarly, pacing and tachycardia result in alterations, whereas bradycardia increases the E/A ratio.

  7. Cardiac cycle - Wikipedia

    en.wikipedia.org/wiki/Cardiac_cycle

    This is the ejection stage of the cardiac cycle; it is depicted (see circular diagram) as the ventricular systole–first phase followed by the ventricular systole–second phase. [2] After ventricular pressures fall below their peak(s) and below those in the trunks of the aorta and pulmonary arteries, the aortic and pulmonary valves close ...

  8. Pressure–volume loop analysis in cardiology - Wikipedia

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

    Hence, the relationship between ventricular end-diastolic volume and dP/dt is a more accurate index of contractility than dP/dt alone. Likewise, an increase in diastolic function or an increase in relaxation causes increased dP/dt min during isovolumic relaxation.

  9. Wiggers diagram - Wikipedia

    en.wikipedia.org/wiki/Wiggers_diagram

    A Wiggers diagram, named after its developer, Carl Wiggers, is a unique diagram that has been used in teaching cardiac physiology for more than a century. [1] [2] In the Wiggers diagram, the X-axis is used to plot time subdivided into the cardiac phases, while the Y-axis typically contains the following on a single grid: Blood pressure. Aortic ...