A high-risk pregnancy is when there is an increased risk of complications during pregnancy, labour or delivery. Here, we will discuss the role of an obstetrician in managing high-risk pregnancies and provide some tips for expectant parents. What Is A High-Risk Pregnancy? A high-risk pregnancy can be caused by a variety of factors, including age, medical conditions, lifestyle choices and previous pregnancy complications. Some common risk factors include: Advanced maternal age (over 35) Medical conditions, such as high blood pressure or diabetes Multiple pregnancies (twins, triplets and etc.