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Artigos Originais
Maternal risk factors associated with the necessity of neonatal intensive care unit
Revista Brasileira de Ginecologia e Obstetrícia. 2014;36(1):29-34
01-01-2014
Summary
Artigos OriginaisMaternal risk factors associated with the necessity of neonatal intensive care unit
Revista Brasileira de Ginecologia e Obstetrícia. 2014;36(1):29-34
01-01-2014DOI 10.1590/S0100-72032014000100007
Views108See morePURPOSE:
To evaluate the maternal risk factors that require newborn assistance in neonatal Intensive Care Units (ICU).
METHODS:
A prospective observational case-control study was conducted on 222 pregnant women (1:1 case-control ratio) attended at a public maternity. The following variables were analyzed in the puerperae: age at menarche, age at first sexual intercourse, history of chronic diseases, habits, prenatal care, obstetric history, clinical complications during pregnancy and childbirth, and sociodemographic variables. The variables of the newborns were: Apgar scores, gestational age, birth weight, presence or absence of malformation, need for resuscitation, and complications during the first 24 hours. Proportions were compared using the Fisher exact test or the Person γ2 test. Multivariable models were developed by logistic regression analysis using adjusted Odds Ratio with a 95% confidence interval (CI).
RESULTS:
Regarding reproductive history, ≥3 pregnancies and 2 or 3 previous cesareans were sytatistically significant (p=0.0 and 0.0, respectively). Among the complications that required assistance in the neonatal ICU, prematurity was responsible for 61 cases (55.5%), followed by risk of intrapartum infection in 46 cases (41.8%). Regarding the maternal history, the presence of hypertensive disease showed statistical significance (p=0.0). Premature rupture of membranes was strongly associated with the need for the neonatal ICU (Odds Ratio - OR=6.1, 95%CI 2.6-14.4).
CONCLUSIONS:
Premature rupture of membranes and hypertensive disease should receive special attention in prenatal care due to their strong association with newborns requiring assistance in the neonatal ICU.
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Artigos Originais
Influence of cause of death on body and internal organs weight in perinatal autopsies
Revista Brasileira de Ginecologia e Obstetrícia. 2014;36(1):23-28
01-01-2014
Summary
Artigos OriginaisInfluence of cause of death on body and internal organs weight in perinatal autopsies
Revista Brasileira de Ginecologia e Obstetrícia. 2014;36(1):23-28
01-01-2014DOI 10.1590/S0100-72032014000100006
Views105See morePURPOSE:
To evaluate changes in body and internal organ weight of autopsied children in the perinatal period and their relationship with the cause of death.
METHODS:
One hundred and fifty three cases of perinatal autopsies performed at a university hospital in Southeastern Brazil ere included. Information about cause of perinatal death, date of autopsy, gestational age, perinatal weight and organ weight was obtained from the autopsy protocols and medical records of the mother and/or the newborn. Four groups of causes of death were defined: congenital malformations, perinatal hypoxia/anoxia, ascending infection and hyaline membrane. Brain, liver, lungs, heart, spleen, thymus and adrenals were analyzed.
RESULTS:
The weight of children with perinatal hypoxia/anoxi (1,834.6±1,090.1 g versus 1,488 g), hyaline membranes (1,607.2±820.1 g versus 1,125 g) and ascending infection (1,567.4±1,018.9 g versus 1,230 g) was higher than expected for the population. Lung weight was higher in cases with ascending infection (36.6±22.6 g versus 11 g) and lower in cases with congenital malformations (22.0±9.5 g versus 40 g). Spleen weight was higher in children with ascending infection (8.6±8.9 g versus 3.75 g ) and adrenal weight was lower in cases with congenital malformations (3.9±2.1 g versus 5.5 g). Thymus weight was lower in cases with miscellaneous causes (3.7±1.2 g versus 7.5 g) and spleen weight was lower in patients with lung immaturity (0.4±0.1 g versus 1.7 g). All results showed significant differences.
CONCLUSIONS:
This study demonstrates that variations in the weight of children and the weight of their organs are related to the types of cause of perinatal death. These data may contribute to a better interpretation of autopsy findings and their anatomical and clinical relationship.
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Article
Obstetric outcomes in the second birth of women with a previous caesarean delivery: a retrospective cohort study from Peru
Revista Brasileira de Ginecologia e Obstetrícia. 2013;35(4):148-152
06-06-2013
Summary
ArticleObstetric outcomes in the second birth of women with a previous caesarean delivery: a retrospective cohort study from Peru
Revista Brasileira de Ginecologia e Obstetrícia. 2013;35(4):148-152
06-06-2013DOI 10.1590/S0100-72032013000400003
Views81PURPOSE: To examine obstetric outcomes in the second birth of women who had undergone a previous cesarean delivery. METHODS: This was a large hospital-based retrospective cohort study. We included pregnant women who had a previous delivery (vaginal or cesarean) attending their second birth from 2001 to 2009. Main inclusion criteria were singleton pregnancies and delivery between a gestation of 24 and 41 weeks. Two cohorts were selected, being women with a previous cesarean delivery (n=7,215) and those with a vaginal one (n=23,720). Both groups were compared and logistic regression was performed to adjust for confounding variables. The obstetric outcomes included uterine rupture, placenta previa, and placental-related complications such as placental abruption, preeclampsia, and spontaneous preterm delivery. RESULTS: Women with previous cesarean delivery were more likely to have adverse outcomes such as uterine rupture (OR=12.4, 95%CI 6.8-22.3), placental abruption (OR=1.4, 95%CI 1.1-2.1), preeclampsia (OR=1.4, 95%CI 1.2-1.6), and spontaneous preterm delivery (OR=1.4, 95%CI 1.1-1.7). CONCLUSIONS: Individuals with previous cesarean section have adverse obstetric outcomes in the subsequent pregnancy, including uterine rupture, and placental-related disorders such as preeclampsia, spontaneous preterm delivery, and placental abruption.
Key-words Cesarean sectionDelivery, obstetricsInfant, newbornObstetric labor, prematurePre-eclampsiaPregnancyPregnancy outcomeSee more -
Artigos Originais
Changes of blood flow in the umbilical artery in hypertensive pregnancy and the implications in the neonatal outcomes
Revista Brasileira de Ginecologia e Obstetrícia. 2013;35(2):71-77
02-07-2013
Summary
Artigos OriginaisChanges of blood flow in the umbilical artery in hypertensive pregnancy and the implications in the neonatal outcomes
Revista Brasileira de Ginecologia e Obstetrícia. 2013;35(2):71-77
02-07-2013DOI 10.1590/S0100-72032013000200006
Views93PURPOSE: To evaluate the anthropometric characteristics of morbidity and mortality of premature newborns (NB) of hypertensive mothers according to the presence or absence of flow (DZ) or reverse (DR) diastolic flow in the dopplervelocimetry of the umbilical artery. METHODS: A prospective study was conducted on preterm newborns of pregnant women with hypertension between 25 and 33 weeks of gestational age, submitted to umbilical artery Doppler study during the five days before delivery. Delivery occurred at Hospital Regional da Asa Sul, Brasília - Federal District, between November 1st, 2009 and October 31st, 2010. The infants were stratified into two groups according to the results of Doppler velocimetry: Gdz/dr=absent end-diastolic velocity waveform or reversed end-diastolic velocity waveform, and Gn=normal Doppler velocimetry. Anthropometric measurements at birth, neonatal morbidity, and mortality were compared between the two groups. RESULTS: We studied 92 infants, as follows: Gdz/dr=52 infants and Gn=40 infants. In Gdz/dr, the incidence of infants small for gestational age was significantly greater, with a relative risk of 2.5 (95%CI 1.7 - 3.7). In Gdz/dr, infants remained on mechanical ventilation for a longer time: median 2 (0‒28) and Gn median 0.5 (0‒25) p=0.03. The need for oxygen at 28 days was higher in G dz/dr comparing to Gn (33 versus 10%; p=0.01). Neonatal mortality was higher in Gdz/dr compared to Gn (36 versus 10%; p=0.03; relative risk of 1.6; 95%CI 1.2‒2.2). Logistic regression showed that, with each 100 grams lower birth weight, the chance of death increased 6.7 times in G dz/dr (95%CI 2.0 - 11.3; p<0.01). CONCLUSION: In preterm infants of mothers with hypertensive changes in Doppler velocimetry of the umbilical artery, intrauterine growth restriction and neonatal prognosis are often worse, with a high risk of death related to birth weight.
Key-words Blood flow velocityDopplerFetal mortalityHypertensionInfant, newbornInfant, prematureLaser-doppler fluxometrypregnancy inducedPregnancy outcomeUltrasonographyUmbilical arteriesSee more -
Artigos Originais
Congenital defects and exposure to pesticides in São Francisco Valley
Revista Brasileira de Ginecologia e Obstetrícia. 2011;33(1):20-26
05-20-2011
Summary
Artigos OriginaisCongenital defects and exposure to pesticides in São Francisco Valley
Revista Brasileira de Ginecologia e Obstetrícia. 2011;33(1):20-26
05-20-2011DOI 10.1590/S0100-72032011000100003
Views106PURPOSE: to evaluate associations between parental exposure to pesticides and births with congenital defects in São Francisco Valley, as well as the demographic profile and the defects found. METHODS: in this case-control study, each case (newborns with congenital defects) had two controls (healthy newborns). The subjects were born in the city of Petrolina, in São Francisco Valley, in 2009. The sample consisted of 42 cases and 84 controls. Data were gathered by a structured questionnaire adapted from Latin-American Collaborative Study of Congenital Malformations (ECLAMC), with the addition of questions related to exposure to pesticides, analysis of the medical records and contact with the hospital's pediatrician. The χ2 test was performed with a significance level of 5% to identify the variables with the greatest differences between case and control groups. Odds Ratio (OR) for the sample was calculated, as well as the OR obtained by logistic regression analysis, and finally, multivariate logistic regression analysis was performed. RESULTS: there was a greater exposure to pesticides during pregnancy in infants with congenital defects compared to healthy subjects. Increased risk was observed when at least one parent was exposed to pesticides (adjusted OR = 1.3; 95%CI = 0.4 - 3.9). The sociodemographic variables associated with congenital defects were: low school level, low weight, prematurity, young parents, chronic diseases, and physical factors. Multiple malformations and defects of the musculoskeletal and nervous systems were more frequently found. CONCLUSIONS: the present study suggests an association between exposure to pesticides and the occurrence of congenital defects, although the data were not significant.
Key-words Congenital abnormalitiesInfant, newbornMaternal exposureOccupational exposurePesticides exposurreRisk factorsSee more -
Artigos Originais
Fetal bilateral obstructive uropathies: ultrasound findings during pregnancy and postnatal outcomes
Revista Brasileira de Ginecologia e Obstetrícia. 2009;31(11):540-546
01-12-2009
Summary
Artigos OriginaisFetal bilateral obstructive uropathies: ultrasound findings during pregnancy and postnatal outcomes
Revista Brasileira de Ginecologia e Obstetrícia. 2009;31(11):540-546
01-12-2009DOI 10.1590/S0100-72032009001100003
Views123PURPOSE: to verify the association between ultrasonographic signs during gestation and post-delivery evolution in fetuses with bilateral obstructive uropathies, followed up in an expectant way. METHODS: fetuses with bilateral obstructive uropathies presenting severe oligoamnios and narrow thorax have been compared with fetuses with bilateral obstructive uropathies without those alterations, concerning the presence or absence of cysts in both kidneys, and the presence or absence of parenchymal hyperechogenicity in both kidneys. Cases of neonatal death were compared with cases of neonatal discharge from the nursery, regarding the same renal echographic aspects mentioned above, the presence of severe oligoamnios and narrow thorax. The sensitivity, specificity, positive and negative predictive value of the presence of bilateral renal cysts, bilateral renal hyperechogenicity, severe oligoamnios and narrow fetal thorax for the neonatal death were calculated. RESULTS: severe oligoamnios and narrow thorax were more frequent (p=0.03; p<0.001) in fetuses with bilateral renal cysts, as compared to those with echographically normal renal parenchyma. Neonatal death was more frequent among cases with severe oligoamnios (p<0.001), narrow thorax (p<0.001) and bilateral renal cysts (p<0.002), when respectively compared with cases without those alterations. The best values of sensitivity, specificity, positive and negative predictive value for the death of neonatal/breastfeeding infants were obtained using the echographic aspect of narrow thorax, and were 81.8, 100, 100 and 79.3%, respectively. CONCLUSIONS: in cases of fetuses with bilateral obstructive uropathies followed up in an expectant way, the ultrasonographic signs more associated to bad prognosis are severe oligoamnios, narrow fetal thorax and presence of bilateral renal cysts.
Key-words Fetal diseasesHydronephrosisInfant, newbornKidney diseases, cysticNatural history of diseasesOligohydramniosUltrasonography, prenatalUrethral diseasesUrinary tractSee more -
Artigos Originais
Neurologic vigor of term newborns according to the type of delivery and obstetric maneuvers
Revista Brasileira de Ginecologia e Obstetrícia. 2009;31(6):279-284
08-13-2009
Summary
Artigos OriginaisNeurologic vigor of term newborns according to the type of delivery and obstetric maneuvers
Revista Brasileira de Ginecologia e Obstetrícia. 2009;31(6):279-284
08-13-2009DOI 10.1590/S0100-72032009000600003
Views100See morePURPOSE: to evaluate the effect of delivery type and usual obstetric procedures on the neurologic condition of a sample of consecutive term and healthy neonates, in the first 48 hours of life, using the Neurologic Adaptative Capacity Score (NACS) system. METHODS: cohort prospective study with 313 neonates, from a neonatology unit: Unidade de Neonatologia e Alojamento Conjunto. The variables analyzed were obstetric variables; clinical outcome: low neurologic vigor phase, evaluated by NACS, at 4, 24 and 48 hours of life. The data have been assessed twice: once with the whole sample and the other comparing the Vigorous Group, whose neonates kept a score of 35 or more during the three evaluations, and the Low Vigor Group, with less than 35 scores during the three consecutive evaluations. Bivariate and multivariate analyses have been done. Possible associations between low neurologic vigor phase and the type of delivery, as well between the low neurologic vigor phase and obstetric variables have been searched. RESULTS: in the bivariate analysis, the delivery type and the obstetric variables were not associated with the low neurologic vigor phase. Nevertheless, the association between the amniotic fluid and the low neurologic vigor phase reached values very close to significance and, then, it was included in the multivariate analysis. In the multivariate analysis, the only variable associated with low neurologic vigor was the presence of meconium stained amniotic fluid, which has shown to be 8.1 times more risky for the neurologic scoring, when Vigorous Group and Low Vigor Group were compared. In the analysis of the whole sample, the same risk was 1.7. CONCLUSIONS: neither the delivery type, nor the usual obstetric procedures were associated with low neurologic vigor phase. This is useful information, clinically or legally speaking, mainly for obstetricians. According to this sample data, when the term neonate is healthy, the delivery type and the usual obstetric procedures have no impact in the neurologic condition.
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Artigos Originais
Factors related to the presence of large for gestational age newborns in pregnant women with gestational diabetes mellitus
Revista Brasileira de Ginecologia e Obstetrícia. 2009;31(1):5-9
03-30-2009
Summary
Artigos OriginaisFactors related to the presence of large for gestational age newborns in pregnant women with gestational diabetes mellitus
Revista Brasileira de Ginecologia e Obstetrícia. 2009;31(1):5-9
03-30-2009DOI 10.1590/S0100-72032009000100002
Views121See morePURPOSE: to evaluate factors related to the presence of neonatal macrosomia in pregnant women with gestational diabetes mellitus. METHODS: 157 pregnant women presenting gestational diabetes mellitus in follow-up were retrospectively selected from January 2004 to July 2006. This group has been divided into two subgroups: one with newborns with weight in accordance with the gestational age (n=136) and another with macrosomic newborns (n=21). Maternal characteristics have been compared between the groups. The t-Student test was used for the analysis of equality hypothesis between the averages of the two groups, and chi-square test, to check the groups' homogeneity concerning ratios. RESULTS: the groups did not show any significant difference concerning the gestational age, body mass index, weight gain along the gestation, number of previous pregnancies, fast glycemia in the oral glucose tolerance test after the ingestion of 75 g (TOTG 75 g), gestational age at delivery, glycemic values during the treatment, and the type of treatment used (p>0.05). In the group with neonatal macrosomia, there was a higher two-hour-glycemia in the TOTG 75 g (p=0.02), higher gestational age at the treatment onset (p=0.02), and a lower number of appointments at the health service (p<0.01). When adjusted to a logistic regression model, the most important factor (p<0.01) found to predict neonatal macrosomia was the two-hour-glycemia in the TOTG 75 g. CONCLUSIONS: the factors more frequently related to neonatal macrosomia were late treatment onset and, consequently, lower number of appointments and chiefly, high two-hour-glycemia in the TOTG 75 g.