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Query: UMLS:C0028754 (obesity)
 124,988 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Shoulder dystocia is an infrequently encountered obstetric emergency varying in incidence from 0.15 to 0.60% of all deliveries. Previously identified risk factors include maternal obesity, previous infants weighing greater than 4 kg, maternal diabetes, and fetal macrosomia (greater than 4 kg). To evaluate the role of prolonged second stage of labor (PSS) as a warning sign for shoulder dystocia, 9864 deliveries at LAC-USC Women's Hospital were retrospectively reviewed. Ninety percent delivered vaginally and 4.89% had PSS with midpelvic delivery. Shoulder dystocia occurred in 0.37% of all vertex vaginal deliveries. In the absence of PSS and midpelvic delivery, the incidence of shoulder dystocia was 0.16%. However, with PSS and midpelvic delivery, the incidence of shoulder dystocia was 4.57% (P less than 0.01). Infants weighing in excess of 4 kg were at increased risk of shoulder dystocia compared with infants weighing less than 4 kg. When PSS occurred and midpelvic delivery was attempted, the incidence of shoulder dystocia was 21% in infants weighing in excess of 4 kg; 8% had had failed vaginal delivery. All shoulder dystocias and failed vaginal deliveries occurred after use of the vacuum extractor. Immediate neonatal injury was apparent in 47% of infants with shoulder dystocia after PSS with midpelvic delivery. There were no maternal or fetal deaths related to shoulder dystocia during the study period.
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PMID:Shoulder dystocia. A complication of fetal macrosomia and prolonged second stage of labor with midpelvic delivery. 72 69

A nine-year review of 103 cases of shoulder dystocia identified obesity, diabetes mellitus and post-datism as important predisposing risk factors. There was a positive correlation with birthweight. Abnormal labour patterns were invariably absent and perinatal outcome was disastrous. The best strategy is to anticipate and avoid this obstetrical emergency.
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PMID:Shoulder dystocia: an obstetrical nightmare. 129 Feb 37

We have studied the deliveries of 198 large fetuses over a period of 3 years between 1st January 1987 and 31st December 1989 in the University Hospital of Poitiers. By large fetus we mean the delivery of a child of 4,000 grammes or more. This occurs in 4.5% of deliveries. The following risk factors are present either singularly or together with others: previous delivery of a large child (12.6%), a previous history of pregnancy diabetes or its absence (2.5%), an increase of weight during pregnancy of more than 15 kgs (46.8%), obesity before the onset pregnancy (19.7%), the height of the uterus equal to or above 35 cms (75.8%). These factors were found in nearly 90% of the patients. Their presence should make one look for a large fetus. The obstetrical results were as follows: 18 ceasareans were carried out (9.09%); instrumental delivery was necessary in 43 cases (23.8%); there were 17 cases of shoulder dystocia treated by obstetrical manoeuvres (9.5%). There were therefore 122 vaginal deliveries without any interference (61%). Neonatal complications were: one lost because of malformation (0.5%), serious morbidity in 30 deliveries (15.15%); 16 fractures of the clavicle and two cases of brachial plexus paralysis of which one persisted, two facial palsies which recovered, six infections, three cases of hypoglycaemia and one serious fetal distress which recovered without any sequelae. Maternal complications were: no mortality, serious morbidity in 26 women (14.1%), 9 haemorrhages at delivery, 9 cases of trauma of the perineum, 6 infections, and 2 haematomata in the episiotomy wound.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:[Delivery of large infants. Management and results of 198 cases]. 195 71

Two hundred eighty-four macrosomic babies of 4000 g or over at birth were compared with an equal number of appropriate weight term infants, to identify maternal risk factors and fetal outcome. Maternal obesity, grand multiparity, diabetes mellitus and postmaturity were the major maternal risks. Prolonged labor, shoulder dystocia and injury to infant following instrumental delivery for mid-cavity arrest were the major fetal risks. A protocol for management of fetal macrosomia is proposed.
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PMID:Fetal macrosomia--maternal risks and fetal outcome. 197 12

Shoulder entrapment during delivery is a true obstetric emergency that can result in significant maternal and infant trauma. Fetal macrosomia, maternal obesity, maternal diabetes and prolonged second stage of labor are associated risk factors. Infant complications of shoulder dystocia include traumatic brachial plexus injury, humeral fracture, clavicular fracture and severe birth asphyxia. With fetal shoulder entrapment, the mother may have significant hemorrhage, fourth-degree perineal lacerations and endometritis. Maneuvers to release the shoulder include closed-fist suprapubic pressure, downward pressure on the posterior shoulder, rotation of the anterior shoulder to the oblique position, rotation of the posterior shoulder beneath the pubic symphysis, release of the posterior arm and anterior rotation of the fetal body.
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PMID:Shoulder dystocia. 200 18

To describe maternal body mass index and to compare the use of maternal weight and body mass index for risk assessment at the initial prenatal visit, 6270 gravid women who were consecutively delivered of infants were studied. Body mass index increased with advancing maternal age, parity, and advancing gestational age and was significantly greater in black women than in nonblack women. Risks for the development of adverse outcome associated with maternal obesity, including development of gestational diabetes, preeclampsia, fetal macrosomia, and shoulder dystocia, were comparably predicted by either maternal weight or body mass index greater than 90th percentile. Maternal weight was as predictive of preeclampsia, macrosomia, and shoulder dystocia as was body mass index when these factors were analyzed as continuous variables, whereas increasing body mass index was more predictive of gestational diabetes. The prediction of factors associated with low maternal weights, small-for-gestational-age birth, prematurity, low birth weight, and perinatal death was equivalent for maternal weight and body mass index that was less than 10th percentile. This study indicates that in the initial risk assessment of outcomes related to maternal weight, the calculation of maternal body mass index offers no advantage over simply weighing the patient. This finding contrasts with results in nonpregnant women.
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PMID:The clinical utility of maternal body mass index in pregnancy. 203 74

Although shoulder dystocia is an infrequent event it has assumed a position of great clinical importance because of our litigious environment. Many cases are preventable by the proper identification of risk factors, especially glucose intolerance, macrosomia, obesity, and postdate pregnancies. The severity of the problem can be rapidly graded or determined by the response to a systematic treatment plan; such a plan is outlined.
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PMID:Shoulder dystocia: prevention and treatment. 240 39

We examined the risk of maternal obesity in 588 pregnant women weighing at least 113.6 kilograms (250 pounds) during pregnancy. Compared with a control group matched for age and parity, we found a significantly increased risk in the obese patient for gestational diabetes, hypertension, therapeutic induction, prolonged second stage of labor, oxytocin stimulation of labor, shoulder dystocia, infants weighing more than 4,000 grams and delivery after 42 weeks gestation. Certain operative complications were also more common in obese women undergoing cesarean section including estimated blood loss of more than 1,000 milliliters, operating time of more than two hours and wound infection postoperatively. These differences remained significant after controlling for appropriate confounding variables. We conclude that maternal obesity should be considered a high risk factor.
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PMID:Maternal obesity and pregnancy. 357 19

Using a 1982 to 1983 regional network data bank of 33,545 delivered infants, a study was conducted comparing 574 macrosomic infants weighing greater than 4500 g to a control group of 18,739 infants whose birth weights were 2500 to 3499 g. Macrosomic infants occurred in 1.7% of the deliveries. Women delivering macrosomic infants were significantly older, of higher parity, more obese (greater than 90 kg), and more frequently diabetic and postmature (longer than 42 weeks) than the controls. The women having macrosomic infants had a higher frequency of cesarean deliveries. The macrosomic infants were more often male and had more birth trauma and shoulder dystocia, higher death rates, and lower Apgar scores. Five-minute Apgar scores were lowest in the very macrosomic subgroup (greater than 5000 g). The high-risk group triad included obesity, diabetes, and post-dates and had a macrosomia frequency of 5 to 14%. Macrosomic infants delivered by cesarean section had significantly fewer birth injuries. Because of these serious perinatal problems, women at risk should be screened for macrosomic infants, and if found, they should be delivered electively by cesarean section.
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PMID:Macrosomia--maternal characteristics and infant complications. 402 78

Perinatal morbidity and mortality are known to be higher for the macrosomic neonate whose birth weight is 4500 g or more, compared with that of appropriate-weight term-size neonates. In a retrospective study comparing 287 macrosomic neonates with 284 appropriate-weight term-size neonates, we found that macrosomia occurred in 1.3% of our annual deliveries, with a male-to-female ratio of 2.3:1. Factors that occurred significantly more frequently in the mothers of macrosomic infants were maternal obesity, multiparity, diabetes mellitus, and previous delivery of an infant heavier than 4000 g. During the intrapartum period the incidence of labor augmentation by oxytocin, shoulder dystocia, and cesarean section was significantly greater in fetal macrosomia. Most significantly, this study revealed that macrosomia. Most significantly, this study revealed that macrosomic fetuses do not experience greater fetal distress in biophysically monitored labor than appropriate-weight term-size fetuses. Twenty-nine (10%) of the macrosomic infants required admission to the neonatal intensive care unit (NICU) compared to 9 (3%) of the control patients (P less than 0.01). This excess neonatal morbidity in the macrosomic neonates was predominantly caused by the delivery process.
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PMID:Macrosomia--maternal, fetal, and neonatal implications. 736 96


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