Cardiac Cycle Flashcards
Atrial Systole
Valves
At the end Mitral valve closes
Atrial Systole
Pressures
- High atrial pressure
- Low left ventricular pressure (equal to left atrial)
- Decreasing aortic pressure
Atrial Systole
Volume
Highest ventricular volume
Atrial Systole
Heart sound
S4
Atrial Systole
JVP Wave
a wave (represents atrial contraction)
Atrial Systole
ECG Wave
At the start p wave
Ventricular Systole Isovolumetric Contraction
Valves
At the start Mitral valve closes and at the end Aortic valve opens
Ventricular Systole Isovolumetric Contraction
Pressures
- Left atrial pressure decreases
- Rapid increase in left ventricular pressure
- Decreasing aortic pressure
Ventricular Systole Isovolumetric Contraction
Volume
Ventricular volume plateaus
Ventricular Systole Isovolumetric Contraction
Heart sound
S1
Ventricular Systole Isovolumetric Contraction
JVP Wave
No JVP wave
Ventricular Systole Isovolumetric Contraction
ECG Wave
At the start QRS complex
Ventricular Systole Rapid Ejection
Valves
At the start Aortic valve opens
Ventricular Systole Rapid Ejection
Pressures
- Low left atrial pressure
- Increasing left ventricular pressure
- Rapid increase in aortic pressure
Ventricular Systole Rapid Ejection
Volume
Rapid decrease in ventricular volume
Ventricular Systole Rapid Ejection
Heart sound
No heart sound