الفهرس 
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Abstract
Preterm birth is an obstetric problem that may result in low-birth
weight or premature infants, these surviving infant are more likely to
sustain neurological and developmental sequelae such as cerebral palsy,
mental retardation and visual and auditory disorders. In United States of
America, for example, there are nearly half a million preterm births in each
year which comprise an economic and social burden on health service
there.
Preterm labour is labour resulting in live birth before 37 completed
weeks (259 days) of gestational age. The incidence of preterm birth had
gradually increased over the last few decades (8.9% in 1980 to 12% in
2002). Preterm premature rupture of the membranes (PPROM) is
antecedent to approximately one third of theses births.
This prospective cohort study was conducted at Almenoufia Hospital on
500 pregnant women in second trimester.
Our study showed that:
The age ranged from 22.0 to 38.0 years old with the mean of
28.153.56 years. Most of the studied cases 337 (64.4%) were multi
gravidity.
The percentage (8.4%) of studied cases who was 42 cases less than 30
years old, and most of the studied cases