الفهرس 
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Abstract
Summary and Conclusion
Preterm labor refers to the occurrence of regular uterine contractions (four or more in 20 minutes or eight or more in hour) and cervical changes (effacement equal to or greater than 1 cm) in women with intact fetal membranes and gestational age less than 37 weeks.
It was observed that, the possibility of pregnancies to be terminated or complicated by preterm labor, abortion, intrauterine growth restriction (IUGR), fetal malformation, gestational diabetes mellitus (GDM), and preeclampsia is around 10-20%. Also, the high-risk pregnancies are responsible for 50% of prenatal deaths (Kilpatrick et al., 2011).
Pregnant women with a poor obstetric history, causing neonatal NICU admission, are at an elevated risk for future pregnancies with complications. It was suggested by Bramham that pregnant females with a previous history of adverse maternal/ prenatal outcomes and preeclampsia are liable to have the same conditions one more time (Bramham et al., 2011). Furthermore, McCowan observed that women with small-forgestational-age (SGA) infants or miscarriage previous history were at an elevated risk of having SGA newborns in posterior pregnancies (McCowan et al., 2009).
In developing countries, it is believed that every year there are more than nine million infants die in the first few weeks of life or before birth (World Health Organization 2006). In Egypt, the rate of perinatal mortality is around 45 per 1000 total births in comparison to 11 per 1000 in the developed countries. Noteworthy, complications related to delivery and pregnancy are responsible for most perinatal deaths (ElShabrawy et al., 2010).
This case study was performed to investigate the association between H. pylori infection and preterm labor. One hundred pregnant women at Ain Shams University Hospital were selected then were divided into two groups case group, includes 50 patients established preterm labor, and control group, includes 50 patients with normal pregnancy >37 weeks.
Different variables like NICU admission, fetal death, and blood transfusion were studied aiming to have a thorough understanding to indicate the type of correlation between H. pylori infection and preterm labor.
Stool samples were collected from mothers in clean and dry screw-top containers, labeled with the mother name then the samples were stored in the freezer (no longer than 24 hours) in a sealed plastic bag to be examined for H. pylori.
Data were collected and the analysis took place via Statistical Package of Social Science (SPSS) software version 18 in windows 7.
In the current study, there was no statistically significant difference as regards to H. pylori infection between both control group and cases group which indicated that there is no association between preterm labor cases and H pylori infection.
In conclusion, this study indicated that there was no relation between H. pylori infection and preterm labor.