Search PubMed⌕ Search

SEARCH · Search PubMed

Results for “LABOR COMPLICATIONS”

Search indexed PubMed citations on genomics, clinical trials, systematic reviews and public health. Explore titles, authors and supplied subject terms, then open the PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 847 records · Page 47Linked to original sources
PubMed1993

[Importance of abnormal fetal presentation of twins during labor and delivery].

Utilizing the 18 year material of two institutions, the author investigated the effect of fetal lie and presentation on the labor and delivery process. Out of 541 pairs of twins, in 299 instances (55.27%) at least one of the fetuses occupied a transverse lie or presented by the breech. In the remaining 242 pairs (44.73%), both fetuses presented by the vertex. In association with premature labor, out of 239 sets of twins, in 134 instances (56.07%), the presentation of at least one of the twins was abnormal. The same phenomenon occurred in 165 out of 302 pairs (54.63%) when labor set in at term. The percentual frequency of abnormal presentations appeared to be positively related to maternal age and parity. In connection with abnormal presentations, there was an increase in the rate of cesarean sections (38.13% versus 13.21%) and that of low Apgar scores (18.18% versus 9.3%), as compared to those cases where both fetuses presented by the vertex. Of all cases of perinatal mortality, 57.76% involved twin pairs with abnormal presentation versus 42.24% for cases where both fetuses presented by the vertex.

Breech Presentation↗
PubMed1993

IgG, IgM and IgA umbilical blood concentrations in normal singleton vaginal deliveries with stinking amniotic fluid or intrapartal maternal febrility > or = 38 degrees C or duration of delivery > 12 hours.

Total of 321 preterm/term newborns delivered in normal singleton vaginal deliveries was studied. Babies were divided into two groups. The first one includes 62 newborns with single, isolated clinical sign: stinking amniotic fluid or intrapartal maternal febrility > or = 38 degrees C or duration of delivery > 12 hours. The second one (control group) contained 259 newborns with no such a sign. In both groups the umbilical cord blood IgG, IgM and IgA concentration (g/L) were quantified by a radial immunodiffusion method. The obtained values were classified into the groups according to 500-grams-birth-weight-ranges. The differences of the mean IgG, IgM and IgA concentrations between the each 500-grams-birth-weight-range subgroup separately in both control and experimental group so as between the same subgroup of the control and experimental group were tested by the means of the Student's t-test. Obtained results did not express the significant differences in the mean IgG, IgM and IgA umbilical cord blood concentrations between the experimental and control group of the newborns.

Birth Weight↗
PubMed1996

X-ray microanalysis of myometrium in parturient women at term.

The purpose of this study was to investigate the elemental composition of myometrial cells from term parturient women with normal and dysfunctional labour. Myometrial biopsies were obtained from forty-four term pregnant women undergoing Cesarean section. The patients were categorized according to uterine activity as follows: before labour, normal labour, labour successfully augmented by oxytocin, oxytocin-resistant labour, and labour arrested by terbutaline. X-ray microanalysis of freeze-dried sections (16 mu m thick) of the myometrium was carried out. An increase in intracellular phosphorus level (p < .01) was noted in the normal labour group compared to before labour. In patients with normal labour, higher phosphorus (p < .009) and potassium (p < .005) were found compared to oxytocin resistant labour. Patients with oxytocin resistant labour had lower intracellular potassium (p < .0006) and phosphorus (p < .02), and higher chloride (p < .05) and sodium (p < .03) compared to levels found in patients who responded to oxytocin treatment. In dysfunctional (oxytocin-resistant) labour the ion distribution in the myometrial cells might be disturbed. The reduced level of potassium and phosphorus together with the high sodium and chloride levels found in patients with oxytocin resistant labour may be connected to an impairment in sodium-potassium pump and muscle dysfunction, clinically diagnosed as dystocia.

Biopsy↗
PubMed1997

[Vesicovaginal and urethrovaginal fistulae].

The authors discuss treatment of vesicovaginal fistulae (VVF) in 36 patients and in six patients urethrovaginal fistulae treated in 1989-1995. The most frequent cause of VVF were iatrogenic lesions after hysterectomy. Occlusion of the fistula was performed 12x by the transvesical approach, nine times by a combined transperitoneal and vaginal approach, four times by a transvesical and transperitoneal approach, eight times by the vaginal route only and three times the authors had to make a continent derivation of urine of the sigma-rectum "pouch" type. Continence by primary operation was achieved in 86%, in urethrovaginal fistulae one reoperation was necessary. With the development of radical operations in the lesser pelvis in women the incidence of iatrogenic lesions is rising slightly, however when the technique of minimal invasive reconstruction urology is used, the prognosis of occlusion of fistulae is favourable.

Adolescent↗
PubMed1998

[Apoptosis and extracellular matrix degradation in chorio-amnion during labor and premature membrane rupture].

BACKGROUND: The molecular mechanisms of chorioamniotics membranes rupture during labor are relationated with a group of enzymes named metalloproteinases of extracellular matrix (MMP), the production of these enzymes are elevated in premature rupture of membranes. The collagenase IV (molecular weight 92 kDa) is induced in specific form during both events. We unknown the regulatory mechanisms to these enzymes in the chorioamnios. OBJECTIVE: To determine the presence of apoptosis and expression of (MMP-) in human chorioamnios during the labor and premature of the fetal membranes. MATERIAL AND METHODS: The gel lysis using zimography was determined in membranes of 1) Labor, 2) Cesarean section, 3) PRM. The analysis of DNA fragmentation in situ and DNA of the membranes was studied. Using immunohistochemistry techniques was identified MMP-9. RESULTS: It was observed increase of gel lysis in stracts with PRM and labor in comparation with cesarean section. In all the specimens were found apoptotics cells, however, they were scareces, abundance or very abundance in cesarean section specimens, labor or PRM respectively. The fragmentation in situ was confirmed in specimens of DNA. The immunohistochemistry showed positively to MMP-9 in labor and PRM specimens, and not in cesarean section specimens. The MMP-9 immunorreactivity was extensive in PRM and only was found apoptosis. CONCLUSIONS: The results demonstrate that apoptosis and expression-activity of MMP-9 can be associated to membranes rupture during labor and lysis, the same explanation may be true for the increased expression of MMP-9 in PRM both phenomena seems to have a sequence.

Amnion↗
PubMed1998

[Ultrasonography of the uterine cervix in pregnancy. Curve of normality in a longitudinal and cross-sectional study].

BACKGROUND: The aim of the study was to establish a normality curve of cervical length variations during pregnancy in our pregnant women population, to be compared with pathological cases (risk of preterm labor and cervical incompetence). DESIGN: A prospective longitudinal and cross-sectional study in women with single pregnancy and without risk factors for preterm labor was carried on. SETTING: Obstetric and Gynecology Department, University of Brescia, Italy. POPULATION OR SAMPLE: One hundred and thirty-four pregnant women with single pregnancy, 112 cross-sectionally and 22 longitudinally followed, with labor at term, were selected. Sixty-eight were nulliparous, 66 pluriparous. Multiple pregnancy, previous placental and vaginal bleeding were excluded. METHODS: A transvaginal probe was used to assess uterine cervix and the patients were studied from the 12th to 41st gestational week. Statistical analysis was carried out by Student's "t"-test and Z-test. MEASURES: Cervical longitudinal diameter, internal uterine os and funneling were assessed. RESULTS: No statistically significant differences emerged in the curves with regard to nulliparous and pluriparous patients. The cut-off between normality and pathology, from the 24th to the 32nd gestational week (2ndSD), seems to correspond to a cervical length lower than 25 mm; a significant progressive decrement of the cervical longitudinal diameter begins from the 28th gestational week. CONCLUSIONS: These results allows the gathering of reference data about normality to compare with pathology (cervical incompetence and preterm delivery), which could be useful both for prevention and follow-up of these cases.

Cervix Uteri↗
PubMed1999

Schizophrenia and complications of pregnancy and labor: an individual patient data meta-analysis.

Several epidemiological studies have reported an association between complications of pregnancy and delivery and schizophrenia, but none have had sufficient power to examine specific complications that, individually, are of low prevalence. We, therefore, performed an individual patient meta-analysis using the raw data from case control studies that used the Lewis-Murray scale. Data were obtained from 12 studies on 700 schizophrenia subjects and 835 controls. There were significant associations between schizophrenia and premature rupture of membranes, gestational age shorter than 37 weeks, and use of resuscitation or incubator. There were associations of borderline significance between schizophrenia and birthweight lower than 2,500 g and forceps delivery. There was no significant interaction between these complications and sex. We conclude that some abnormalities of pregnancy and delivery may be associated with development of schizophrenia. The pathophysiology may involve hypoxia and so future studies should focus on the accurate measurement of this exposure.

Case-Control Studies↗