Table 1 Useful definitions4,40,41,42

From: First trimester miscarriage: patient care considerations for the dental team

Term

Description

Miscarriage

The involuntary, spontaneous loss of a pregnancy before 24 completed weeks' gestation

Intrauterine death

A pregnancy lost between 24 weeks and the onset of labour

Stillbirth

The loss of a baby which is not diagnosed until the point of labour

Embryo

A fertilised human oocyte by a human sperm which has not yet reached the eighth week of development

Fetus

Develops from an embryo after the ninth week of development

Fetal viability

Ability of the fetus to survive outside the uterus