111 Cardiac Cycle PV Loops Flashcards
cardiac muscle contraction cycle
Pressure vs Time Wiggers Diagram
Windkessel Effect
as we age, arteries have less compliance and the systolic increases and the diastolic decreases so PP increases
Wiggers Pressure Time + ECG
Wiggers Pressure Time + Sounds
Phonocardiogram
Jugular Venous Pulsation
Pressure-Volume Loop
Relating the Wiggers Diagram to the LV Pressure-Volume relationship
Increased Preload on a PV-loop
Effect of increased afterload on PV-loop
Effect of Increased Contractility on PV-Loop
Effect of Decreased LV Compliance on PV loop
End - Systolic Pressure Volume Relationship
Wall Tension: LaPlace Law
Wall Stress: LaPlace Law
WHy wall stress incrase with radius: •High curvature, relatively larger component of force points in, creating pressure, •Low curvature, relatively smaller component of force points in, creating less pressure
Energy utilization in the heart
lose most of energy to heat
Relationship between Wiggers diagram vs LV EDPressureVolume Relationship
