In the last decade, a lot of advancements in the management of high-risk pregnancies have been achieved; but till date, evidence-based information is less available and clinically practiced. The major challenges faced by obstetricians are to diagnose and treat preterm birth, pre-eclampsia, diabetes, thyroid disease in pregnancy, etc. In advancement in technology, these problems can be easily diagnosed with imaging techniques, which includes hormone assays, USG, Doppler study, neonatal ventilatory support and steroids, etc. Through these techniques, it is possible to detect fetal development, growth and any anomalies in utero. This book not only highlights various topics in medical complications of pregnancy but also focuses on various issues and treatment modalities in obstetric complications in detail. It is divided into three sections namely, obstetrics complications, medical complications, and imaging technique. Obstetricians involved in the high-risk pregnancy will be benefited through this book as it contains all current information on high-risk pregnancy.