Cardiovascular disease is an important cause of maternal death. Women with diabetes are at increased risk of preeclampsia and this is associated with preterm delivery, intrauterine growth restriction and risk of disability in the child. Preeclampsia is also recognised as a major risk factor for future cardiovascular disease for the mother. Studies in nondiabetic individuals have highlighted the importance of early identification of subclinical cardiac dysfunction, especially in the context of preeclampsia which results in enormous stresses on the heart. The role of non-invasive tests such as echocardiography with deformation imaging as well blood markers to identify the higher risk individuals (type1 and type 2 diabetics) in this context has not been fully studied. Our study has aimed to ascertain the degree of normal and pathological cardiac changes during pregnancy and the timing and degree of recovery postpartum. We also examine the role of the retinal vasculature, angiogenic mediators, serum lipids and cardiac biomarkers in the early detection subclinical cardiac dysfunction and its association with preeclampsia. The role of aspirin prophylaxis during pregnancy in prevention of preeclampsia and thus preeclampsia related cardiac dysfunction and possible lasting cardiac changes beyond pregnancy is also being examined as it is not clear that this reduces the risk of preeclampsia in women with diabetes in the same way as in women without diabetes.