Maternal-fetal medicine (MFM) is the branch of obstetrics which focuses mainly on the medical and surgical management of high-risk pregnancies that includes monitoring and treatment including comprehensive ultrasound, chorionic villus sampling, genetic amniocentesis, and fetal surgery or treatment. Obstetricians who practice maternal-fetal medicine are also known as perinatologists.
Health, as defined by the World Health Organization (WHO), is "a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity." This definition has been subject to controversy, as it may have limited value for implementation. Health may be defined as the ability to adapt and manage physical, mental and social challenges throughout life.