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PubMed1994

[Surface cytoarchitectonics of maternal and fetal erythrocytes in normal and complicated course of pregnancy and labor].

Red cell surface architectonics and ultrastructure were studied in pregnant women, their fetuses, and newborns in normal and complicated pregnancy. The results were correlated to dopplerometric blood stream parameters of uterine artery and fetal umbilical artery. The most grave changes in red cell structure were detected in women with medium-severe and grave OPH gestosis: the share of red cell discoid forms was reduced by 21%, that of nontransitional forms ("shrunk ball"-shaped cells, spherocytes, degeneratively changed cells) increased by 17%. Deterioration of blood rheology in complicated pregnancy correlated with reduced fetoplacental and uteroplacental blood stream and with unfavorable perinatal outcomes.

Adult↗

PubMed1992

Elective induction versus spontaneous labor: a retrospective study of complications and outcome.

OBJECTIVE: This retrospective study was undertaken to identify whether electively induced labor places the mother or her fetus at increased risk as compared with her spontaneous labor cohort. STUDY DESIGN: This study compares the labor, delivery, and fetal outcome of 253 parturients in which labor was electively induced with 253 matched controls who began labor spontaneously. All patients were delivered at Huntington Memorial Hospital in Pasadena, California, during the calendar year 1990. The patients were between 37 and 41 weeks' gestation and had no medical or obstetric conditions necessitating induction. The cases and controls were matched for age group, parity, gestational age, and delivering obstetrician. RESULTS: Epidural anesthesia was used in 83.8% of patients in the induction group versus 55.7% in the spontaneous group. Patients with labor induced had a shorter first stage of labor. Meconium staining was found significantly more often in the spontaneous group than in the induced group (16.2% vs 6.7%). This contributed to a greater rate of neonatal consultations in the spontaneous labor group. Although cesarean section rates between the two groups were similar, nulliparous patients in the induction group with an estimated Bishop score of less than or equal to 5 had a 50% cesarean section rate. Iatrogenic prematurity was not encountered. No differences existed between the two groups with respect to intrapartum maternal complications, fetal complications, or postpartum complications. CONCLUSIONS: When compared with spontaneous labor, elective induction of labor at term does not appear to pose an increased risk to the mother or her fetus in a carefully selected patient population. However, elective induction of labor in a nulliparous patient with an unfavorable cervix should be discouraged.

Cohort Studies↗

PubMed2004

Precipitate labor: higher rates of maternal complications.

OBJECTIVE: The study was aimed to identify risk factors and to elucidate pregnancy outcome following precipitate labor, i.e. expulsion of the fetus within less than 3 h of commencement of contractions. METHODS: A comparison of patients with and without precipitate labor, delivered during the years 1988-2002, was conducted. Patients who underwent cesarean deliveries were excluded from the analysis. A multiple logistic regression model, with backward elimination, was performed to investigate independent risk factors for precipitate labor. RESULTS: The number of vaginal deliveries that occurred during the study period was 137,171. Of these, 99 were precipitate. Independent risk factors for precipitate labor, using a backward, stepwise multivariate analysis were: placental abruption (odds ratio (OR) = 30.9, 95% confidence interval (CI) 15.9-60.4, P < 0.001); fertility treatments (OR = 3.9, 95% CI 1.7-9.0, P = 0.002); chronic hypertension (OR = 3.1, 95% CI 1.2-7.8, P = 0.015); intrauterine growth restriction (IUGR) (OR = 2.9, 95% CI 1.2-6.8, P = 0.014); prostaglandin E2 induction (OR = 1.9, 95% CI 1.1-3.5, P = 0.045); birth weight < 2,500 g (OR = 1.8, 95% CI 1.1-3.1, P = 0.020); and nulliparity (OR = 1.7, 95% CI 1.1-2.6, P = 0.014). No significant differences were noted between the groups regarding perinatal complications such as meconium stained amniotic fluid, perinatal mortality and low Apgar scores. However, there were higher rates of maternal complications in the precipitate labor group such as cervical tears and grade 3 perineal tears (18.2% versus 0.3%, P < 0.001; and 2.0% versus 0.1%, P < 0.001, respectively), post-partum hemorrhage (13.1% versus 0.4%, P < 0.001); retained placenta (2.0% versus 0.5%, P = 0.02); the need for revision of uterine cavity and packed-cells transfusions (34.3% versus 4.9%, P < 0.001; and 11.1% versus 1.1%, P < 0.001, respectively) and prolonged hospitalization (27.6% versus 19.2%, P = 0.035) as compared to the controls. CONCLUSION: Precipitate labor is associated with higher rates of maternal complications.

Adult↗

PubMed1963