[Perinatal mortality at Hospital de Ginecoobstetricia No. 23 of Monterrey, Nuevo León, 2002-2006 period].

Background: Perinatal period begins at 22 gestational weeks and ends seven days after birth. Perinatal mortality is an important quality indicator of the obstetric and pediatric care available, and representative of the population's health service.

Objective: To know fetal, early neonatal, and perinatal dead rates, and them main mortality causes.