There is no formal or universally accepted definition of a “high-risk” pregnancy. Generally, however, a high-risk pregnancy involves at least one of the following:
Certain conditions or characteristics, called risk factors, make a pregnancy high risk. Doctors identify these factors to determine the degree of risk for a particular woman and baby and thus to provide better medical care.
Last full review/revision December 2008 by Christian M. Briery, MD; John Morrison, MD