جستجوی مقالات مرتبط با کلیدواژه "premature labor" در نشریات گروه "پزشکی"

Preeclampsia refers to high blood pressure and protein in the urine after the 20th weeks of pregnancy. Some studies show that the location of the placenta in pregnancies can predict the occurrence of preeclampsia, preterm delivery and fetal growth restriction. The present study was performed aimed to investigate the relationship between placental site and occurrence of preeclampsia.

This cross-sectional and prospective study was performed in 2019 on 325 pregnant women with 18 to 22 weeks gestational age in Kosar Hospital in Qazvin. Questionnaire information included placenta location, gestational age, neonatal sex, fetal growth restriction, and preterm delivery. Then, the location of the placenta was determined by ultrasound and the placenta with anterior, posterior, and fundus positions was included in the central group and the right and left lateral placenta in the lateral placenta group. Data were analyzed using SPSS software (version 22) and chi-square and logistic regression tests. P<0.05 was considered statistically significant.

The fundal placenta compared to the anterior placenta reduced the incidence of fetal growth restriction (P=0.044). The posterior placenta compared to the anterior placenta increased the incidence of preterm labor (P=0.041). In the present study, there was no significant relationship between placental location and the occurrence of preeclampsia (P= 0.680).

Ultrasound to determine the location of the placenta in the first months of pregnancy can predict the occurrence of pregnancies prone to preterm labor and fetal growth retardation, but placental location cannot be predictive of preeclampsia.

Preterm labor is one of the most important topics of neonatal morbidity and mortality. One of best of the methods for prevention of premature birth is cervical cerclage. This study was performed with aim to evaluate the frequency of preterm delivery in patients with cervical cerclage in Emam Ali Hospital of Zahedan.

 In this retrospective descriptive cross-sectional study conducted during 2016-2017, the   records of pregnant women with preterm labor who had undergone cerclage due to a history of second trimester abortion or short cervical canal length < 2.5 mm in Emam Ali   Hospital of Zahedan were examined. Data were analyzed by SPSS statistical software (version 20).

 The frequency of total of the patients during the study period was 3152 records that among them, the frequency of preterm labor without considering other variables such as medication, fetal malformation, amniotic fluid level and surgical history was 318 cases (10.08%). Also, from a total number of 67 mothers with cerclage, 43 cases (64.2%) had term delivery, but 24 (35.8%) resulted in preterm delivery.

In the present study, preterm delivery occurred in less than 50% of the population who had cervical cerclage, but still shows a high prevalence of preterm labor in general population.

The present study was performed to determine the relationship vaginal bleeding in first half of pregnancy and fate of pregnancy in referrals of teaching hospitals of Tehran University of Medical Sciences during the years 1993-1994. The case-control strategy of this study was carried out on 432 patients. In this respect, 216 ( case group) out of them had vaginal bleeding during the first half of pregnancy and the remainder had no history of bleeding (control group). Both groups were nearly alike regarding knowledge, occupation, the surveillance of pregnancy period, number of conceptions and labors, interval between pregnancies, bearing a dead baby, and premature labor. For collection of data, an interview was set. The variables were premature labor, birth-time low weight, and perinatal mortality. The results showed that there is a significant relationship between vaginal bleeding in first half of pregnancy and premature labor (P<0.05) and birth-time low weight (P<0.02), but there is not such a relationship for perinatal mortality.

Considering the increasing trend for ectopic pregnancies in the world and different reports on its complications and the fate of the following pregnancies, this study was performed to determine the relationship between these factors in referrals of the hospitals of Shaheed Beheshti University of Medical Sciences from 1991 to 1996. The cohort strategy of this research study was carried out on 260 women. The case group (n = 130) consisted of cases with a pathologic diagnosis of tubular pregnancy and had undergone radical surgical procedures and then still willing to become pregnant. The control group (n = 130) comprised of cases with normal pregnancy and had a personal and history as case group. The required data were gathered from their medical records. In addition, the condition of next pregnancies, the fertility in this regard, having the term or early labor, having again ectopic pregnancy, and spontaneous or neglected abortion were considered and the results were analyzed using statistical tests. Out of 260 cases, 70% and 3.8% of cases in case and control groups respectively and had infertility after 14.2 ± 10.8 months and the difference was significant (P<0.0001). In control group, the elapsed time with the next pregnancy was shorter and 99.4% of women had become pregnant again in the first year. The rate of next term pregnancy for case and control groups was 50% and 65.4% and the difference was significant (P<0.02). There was also no significant difference between case and control groups regarding premature labor and next abortions, but there existed a higher chance of ectopic pregnancy in case group compared to control group (P<0.001). In summary, it can be concluded that ectopic pregnancy is a great threat for the next pregnancies and their fate and for this reason, newer diagnostic and treatment methods is suggested for such patients.