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Abdominal sonography is a best method to defined implantation site of placenta. Determination of placental site is very important if the aggressive method is to be used this study design to define implantation site of placenta in 1585 pregnant women whom referred 28 wk to sonographic center to Deziani Hospital in their third trimester with routine prenatal care. Collection of data perform in nine month and the data was collected by interviewing the pregnant women using a checklist and questionnaire. The results from this investigation show that 51.79% of placenta located in fondoanterior 31.23% fondoposterior, 12.11% posterior another in lateral position and 0.18% of placenta was previa.

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Background & Objective: Asymptomatic bacteriuria (ASB) is a significant problem during pregnancy because it can be developed into more severe infections that may have repercussions for the health of the mother and unborn child. The aim of this study was to assess relationship between asymptomatic bacteriuria and preeclampsia in Gorgan. Materials & Methods: This case control study performed on 150 preeclamptic women (Case group) compared with 150 healthy pregnant women (Control group) who hospitalized from 2002 to 2002 (Gravid, age and history of preeclampsia was matched with 2 group). The questionnaires and checklist was completed, urine analysis, and urine culture were performed. The data analyzed with SPSS software and statistical descriptive and analytic such as: T-student, U-Mann Whitney. Results: The risk of preeclampsia in pregnant women with ABS was 3.2 fold to healthy pregnant women (OR=3.22, CI 95% for OR=1.99, 5.21). Conclusion: Asymptomatic bacteriuria may predisposing factor to preeclampsia, we suggest screening of ASB in the 1st prenatal care and follow in 2nd and 3rd trimester of pregnancy o prevent the main side effect in pregnancy and the safety of mothers.