Cardiac Physiology and Pressure-Volume Loops

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Flashcards for cardiac physiology based on pressure-volume loops.

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10 Terms

1
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<p>Pressure Volume Loop: A to B</p>

Pressure Volume Loop: A to B

Isovolumetric contraction

<p>Isovolumetric contraction</p>
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<p>Pressure Volume Loop: B to C</p>

Pressure Volume Loop: B to C

Ejection

<p>Ejection</p>
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<p>Pressure Volume Loop: C to D</p>

Pressure Volume Loop: C to D

Isovolumetric relaxation

<p>Isovolumetric relaxation</p>
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<p>Pressure Volume Loop: D to A</p>

Pressure Volume Loop: D to A

Ventricular filling

<p>Ventricular filling</p>
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<p>End-Systolic Pressure-Volume Relationship (ESPVR)</p>

End-Systolic Pressure-Volume Relationship (ESPVR)

Represented by the slope of the C point (end systole); indicates contractility.

<p>Represented by the slope of the C point (end systole); indicates contractility.</p>
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<p>Acute Heart Failure Impact on ESPVR</p>

Acute Heart Failure Impact on ESPVR

Results in a reduced end-systolic pressure-volume relationship (ESPVR)

<p>Results in a reduced end-systolic pressure-volume relationship (ESPVR)</p>
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<p>End-Diastolic Pressure-Volume Relationship (EDPVR)</p>

End-Diastolic Pressure-Volume Relationship (EDPVR)

Measure of ventricular compliance that changes with diastolic function. Changes with compliance, generally with restrictive myopathies.

<p>Measure of ventricular compliance that changes with diastolic function. Changes with compliance, generally with restrictive myopathies.</p>
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<p>Stroke Volume Representation on Pressure-Volume Loop</p>

Stroke Volume Representation on Pressure-Volume Loop

Represented by the diameter of the loop.

<p>Represented by the diameter of the loop.</p>
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<p>Afterload Representation on Pressure-Volume Loop</p>

Afterload Representation on Pressure-Volume Loop

Represented by the height of the curve.

<p>Represented by the height of the curve.</p>
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<p>Contractility</p>

Contractility

Represented by the end-systolic pressure-volume relationship.

<p>Represented by the end-systolic pressure-volume relationship.</p>