الفهرس 
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Abstract
The urinary tract is second only to the respiratory tract in acquiring microbial infections, especially in females. Urinary tract infections (UTI) are more common in pregnant than non pregnant women.
The aim of the present study was to evaluate the incidence of bacteriuria in primigravida in labor and to assess the presence of a relation between it and the occurrence of preterm labor or premature rupture of membranes.
To achieve this target, one thousand primigravida who were in labor were subjected to obstetric and vaginal examination and were bacteriologically evaluated for the presence of bacteria in their urine samples. All cases were followed up as regards progress of labor, mode of delivery and fetal weight.
Our study found that the incidence of preterm delivery was 143 cases (14.3%) in the studied primiparous women. In the current study, it was found that 166 cases (16.6%) of the study group) complained of rupture of the membranes before the onset of labor (PROM).
In the present study, the urine analysis of 1000 nulliparous women in labor revealed that 185 cases (18.5%) of them were bacteriuria positive and 815 cases (81.5%) of them were bacteriuria negative.
As regards the relationship between bacteriuria and the time of delivery, this study found significantly increased incidence of bacteriuria +ve cases in preterm deliveries where 113 out of 143 cases (79%) of preterm delivery were +ve for bacteriuria, whereas 72 out of 857 cases (8.4%) of full term delivery had +ve bacteriuria (p<0.001).
Considering the relation between bacteriuria and PROM, it was found that there was a higher incidence of bacteriuria in cases complaining of PROM (65.7%) than in cases presenting with intact membranes at the time of onset of labor (9.1%).
In respect to the mode of delivery, in the present study, it was found that from the 1000 studied cases, 253 cases (25.3%) delivered by cesarean section & 747 cases (74.7%) delivered vaginally.
In the present study, significantly higher prevalence of bacteriuria was found in the cases that had a caesarean section (47.4%) than in those who delivered vaginally (8.7%). Moreover, the current study found that out of the 253 women who delivered by caesarean section, 111 suffered from PROM (43.9%).
Furthermore, it was found that preterm labor occurred in 103 cases out of the 253 cases (40.7%) that had a caesarean section, while it occurred in 40 out of 747 cases of vaginal delivery (5.6%).
In the present study, the percentage of cases with low birth weight infants was significantly higher in the women who suffered from bacteriuria than in those who had no bacteriuria (71.9% vs. 1.6%).
Finally, the present study found that from the 857 full term cases only 72 cases were bacteriuria +ve, out of those 51 cases (70.8%) had low birth weight, 12 cases (16.7%) had average birth weight & 9 cases (12.5%) had high birth weight. On the other hand, the 785 cases with bacteriuria –ve were associated with only 10 cases (1.3%) with low birth weight, 699 cases (89%) with average weight & 76 cases (9.7%) with high birth weight.