the branch of obstetrics concerned with the anatomy and physiology and diagnosis and treatment of disorders of the mother and the fetus or newborn baby during late pregnancy and childbirth and the puerperium

the specialized care of fetuses in utero from the third month of pregnancy until birth and infants for approximately one month following birth

A branch of medicine concerned with care of high-risk pregnancies. Also called maternal-fetal medicine.

The care and treatment of mother and fetus during pregnancy and after birth, particularly for high-risks. Usually this is the period beginning after the 28th week of pregnancy and ending 28 days after birth.

Specialized management of a high-risk pregnancy before and after birth.

A branch of medicine dealing with medical and biological issues that affect the birth of a child. Perinatology combines obstetrics, gynecology and neonatology, and includes treatment of a fetus or a newborn and the mother.