Fig. 6-9 Movement of Ventricular Septum endothelial surface at Right Ventricle in:

• Aortic Insufficiency (AI)
• Atrial Septum Defect (ASD)
• Mitral Stenosis (MS)
• Mitral Insufficiency (MI)

. Dotted lines show corresponding movement in a healthy person. Phase lines 1-5 added.

1. An atrial systolic phase delimited by events a and b (or a'')
   
2. An early-systolic ventricular phase circumscribed by events b (or a'') and d or e, whichever turns out to be the largest
   
3. A late-systolic ventricular phase delimited by events d, e and f
   
4. An early-diastolic phase delimited by events f and i, k or l, whichever is the latest to occur
   
5. A late-diastolic ventricular phase delimited by events i, k, l and a (or b or a'').