The seminar discusses diabetes mellitus as a common metabolic disorder in pregnancy, particularly gestational diabetes, which affects 1-4% of pregnancies and can lead to long-term diabetes in 50% of affected women. It covers classification, pathophysiology, potential candidates, diagnosis, and management strategies, emphasizing the importance of monitoring blood glucose levels and dietary adjustments. The seminar highlights both antepartum and postpartum management along with nursing diagnoses related to the condition.