Indications for caesarean section in pregnancy are all except:
Eisenmenger's syndrome
Aortic stenosis
MR
Aortic regurgitation
Cardiac indications for cesarean section:

Aortic aneurysm or dilated aortic root ≥ 4 cm
Marfans syndrome with aortic involvement
Severe symptomatic aortic stenosis
Acute severe congestive heart failure
Recent MI
Need for emergency valve replacement immediately after delievery
A patient who is fully anticoagulated with warfarin at the time of labor needs to be counseled for cesarean section because the baby is also anticoagulated and vaginal delivery carries increase risk to the fetus of intracranial hemorrhage.