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PubMed2004

Dilation and evacuation at >or=20 weeks: comparison of operative techniques.

OBJECTIVE: The objective of this study is to compare the relative safety of 2 techniques for surgical abortion late in the second trimester.Study design Retrospective review of patients who underwent surgical abortion at >or=20 weeks' gestation at our hospital from June 1996 through June 2003. Records were reviewed to determine whether the technique used was dilation and evacuation or intact dilation and extraction. Subsequent pregnancies at our hospital were identified, and obstetric outcomes were recorded. Categorical data were compared with Fisher exact test and chi(2) analysis. Continuous data were compared with Mann-Whitney U test. RESULTS: Three hundred eighty-three patients met inclusion criteria. Intact dilation and extraction was performed in 120 cases, and dilation and evacuation was used in 263. Intact dilation and extraction was associated with higher parity, later gestational age, and more preoperative cervical dilation. There was no difference in procedure time or estimated blood loss in the 2 groups. Complications occurred in 19 cases (5.0%), and occurred with similar frequency in the 2 groups. We identified 62 subsequent pregnancies. There were no second-trimester miscarriages. Spontaneous preterm birth occurred in 2 of 17 (11.8%) pregnancies in the intact dilation and extraction group, compared with 2 of 45 (4.4%) in the dilation and evacuation group (P=.30). CONCLUSION: Outcomes appear similar between patients undergoing dilation and evacuation and intact dilation and extraction after 20 weeks' gestation. Subsequent obstetric outcomes are similar between the 2 groups. The technique for surgical abortion should be determined by the physician on the basis of intraoperative factors.

Abortion, Induced↗
PubMedDate not supplied

The risk of periventricular-intraventricular hemorrhage with vacuum extraction of neonates weighing 2000 grams or less.

OBJECTIVE: The objective of this retrospective study was to test the hypothesis that vacuum extraction of neonates with a birth weight < or = 2000 gm is associated with an increased risk of periventricular-intraventricular hemorrhage (PV-IVH). STUDY DESIGN: One hundred sixty-eight neonates weighing < or = 2000 gm were entered into this case control study. Fifty-six neonates delivered by silicone-rubber vacuum comprised the study group. For every infant born by vacuum-assisted delivery, two spontaneously delivered neonates served as controls (n = 112) and were matched for best obstetric gestational age (within 1 week), delivery date within 1 year, and birth weight < or = 2000 gm. Maternal and neonatal medical records were reviewed for demographic variables, antenatal complications, indication for vacuum-assisted delivery, neonatal birth weight, Apgar scores, umbilical cord blood gas values, and neonatal morbidity including the incidence of PV-IVH. All perinatal outcome variables were compared between the vacuum-assisted and spontaneously delivered groups. RESULTS: Both groups were similar with regard to maternal age, parity, antepartum complications, gestational age at delivery, neonatal birth weight, and gender. Both groups were also similar with regard to the incidence of 1-minute Apgar score < 5, small for gestational age, cephalhematoma, birth trauma, respiratory distress syndrome, hyperbilirubinemia, and sepsis. There was a significant increased incidence of 5-minute Apgar scores < 7 in the vacuum-assisted group (p = 0.04). No significant difference was observed in the incidence of PV-IVH grades 1 through 4 (21.4% vacuum group vs 16.1% control group, odds ratio 1.42, 0.58 to 3.45). CONCLUSION: Indicated use of the silicone-rubber vacuum to assist vaginal delivery of neonates weighing < or = 2000 gm does not appear to be associated with an increased risk of PV-IVH or other neonatal complications.

Case-Control Studies↗
PubMed2001

[Obstetrical vacuum: a modern instrument].

Contrary to the forceps, the vacuum extractor has clearly progressed in the last years. The use of the vacuum extractor increases in every developed countries, certainly because of an easier learning than forceps. Furthermore, maternal after-effects of the delivery like sphincters injuries and anal incontinence seem to be less frequent with vacuum extractor than with forceps. For these reasons the American College of Gynecologists and Obstetricians (ACOG) recommend a large use and a priority teaching of this fetal extraction instrument. The technical aspects of use of the vacuum extractor are developed in this article, and personnel results are added as commentaries.

Atmospheric Pressure↗
PubMed1984

Characteristics of hypertension in pregnancy. A retrospective study of 261 consecutive cases.

During the period 1969-73, 0.3% of 17 000 unselected non-diabetic pregnancies in our hospital were complicated by severe pre-eclampsia, 0.6% by mild pre-eclampsia and 0.6% by hypertension in pregnancy. Records from affiliated maternity centres and the hospital regarding these 261 women were studied and pertinent data assembled for comparison with 260 matched normotensive pregnancies. Instrumental deliveries were more common in all types of hypertensive pregnancy, with a 35% frequency of caesarean section in severe pre-eclampsia compared with fewer than 5% for controls. Significantly longer hospitalization and increased perinatal mortality were observed in hypertensive pregnancies, most pronounced in severe pre-eclampsia. The combination of high blood pressure and proteinuria was associated with the greatest risk for premature birth, low infant weight and perinatal mortality. The overall incidence of hypertensive disorders in pregnancy was relatively low, 1.5%, but these women counted for a significant proportion of obstetric complications requiring hospitalization and instrumental delivery.

Apgar Score↗
PubMed1977

Preoperative dilatation of the cervix by single vaginal administration of 15-methyl-PGF2alpha-methyl ester.

Two different vaginal suppositories have been developed suitable for one single treatment for preoperative dilatation of the cervix prior to vacuum aspiration in late first trimester abortion. The study included 60 patients equally distributed in one control group (Group I) where vacuum aspiration was performed without pretreatment; one group (Group II) where the patients obtained 2.0 mg 15-methyl-PGF2alpha-methyl ester in a rapid releasing base six hours prior to operation and one group (Group III) where the prostaglandin dose was increased to 2.5 mg 15-methyl-PGF2alpha-methyl ester and a more slow releasing base was used and the operation performed after 12 hours. The mean cervical dilatation at operation was in Group II 9 mm and in Group III 11 mm in comparison with 4.8 mm in the control group. The bleeding at the operation was also significantly reduced.

Abortion, Induced↗
PubMed1997

[Delivery in nulliparous women aged < or = 18 years].

METHODS: A retrospective study of 733 nulliparous women who gave birth at the Department of Obstetrics and Gynecology at the University of Bari, in the period from 1-1-1994 to 31-12-1995, was performed to evaluate the outcome of pregnancy and neonatal outcome in adolescents < or = 18 years old. The sample was subdivided into two subgroups; the first of 114 girls < or = 18 years old; the latter of 619 women 22-34 years of age, and they were compared. RESULTS: We have found a more lengthy term of pregnancy (39.66 weeks vs 39.27 weeks p = 0.008) and a greater incidence of vacuum extraction (VE) in the group of < or = 18 years old (7.89% vs 3.23% p = 0.03).

Adolescent↗
PubMed1997

Medical abortion or vacuum aspiration? Two year follow up of a patient preference trial.

OBJECTIVE: To describe and compare health outcomes two years after medical abortion or vacuum aspiration in women recruited into a patient preference trial during 1990 to 1991. DESIGN: Women recruited to the original, partially randomised study were contacted for assessment using a structured interview. SETTING: Grampian region of Scotland, UK. PARTICIPANTS: One hundred and forty women who had participated in a partially randomised study of first trimester abortion two years previously. INTERVENTION: Vacuum aspiration or medical abortion using mifepristone and gemeprost. MAIN OUTCOME MEASURES: Long-term general, reproductive and psychological health; acceptability of procedure; perceived value of choice of method of termination. RESULTS: There were no significant differences between women who had undergone medical abortion or vacuum aspiration two years previously in general, reproductive or psychological health. Almost all women placed a high value on the provision of choice of method of termination. There was a significant difference in perception of long term procedure acceptability among women who had been randomised to a method of termination. CONCLUSIONS: Women should have the opportunity to choose the method of termination. This opportunity will result in high levels of acceptability, particularly at gestations under 50 days of amenorrhoea.

Abortifacient Agents, Nonsteroidal↗
PubMed1999

[Maternal and fetal prognosis of occipito-posterior presentation].

Occipito-posterior persistent presentation is a relatively rare obstetrical condition, occurring in 2 to 4.5% of deliveries. Failure of the occiput to spontaneously rotate has been associated with increased maternal and neonatal morbidity. We performed a retrospective study of 210 vaginal occiput posterior deliveries to investigate the influence of this position on maternal and fetal morbidity. Our results demonstrate that overall prognosis of occipito-posterior persistent presentation is good but less auspicious than occipito-anterior presentation on account of importance of perineal injuries and maternal and fetal infections. Forceps extraction in posterior presentation is criticized today. In our opinion, the vacuum extractor is the better instrument because it is less aggressive to maternal tissues and also because, in most cases, the fetal head rotates anteriorly after provoked flexion.

Adolescent↗
PubMedDate not supplied

[A new vacuum extraction system with a ball joint and detachment warning--in vitro studies and clinical use].

BACKGROUND: The vacuum extractor is used in about 5% of deliveries. It is associated with a lower maternal morbidity than is forceps extraction. On the other hand, cephalhematomas, hyperbilirubinemia and cerebral hemorrhages in the baby are observed more frequently. The sudden detachment of the vacuum extractor with appreciable fluctuations in intracranial pressure in the baby is especially dangerous. In order to improve the conventional Malmström system, we have developed a new vacuum extractor and investigated its handling in vitro and in clinical application. PATIENTS AND METHODS: The essential constructional principle of the new vacuum extractor consists in a pivot lowered by ball bearings and a volume reduction of one third. Moreover, in two-chamber vacuum it is possible to give a warning of sudden detachment. The possible tractional force in kiloponds was determined at various angles (0 degree, 15 degrees, 30 degrees und 45 degrees) comparing the Malmström extractor with the new one and two-chamber system in a standardized apparatus. In addition, the new vacuum extractor was also used clinically in 43 women; besides the obstetric parameters, the handling was also appraised. RESULTS: In the in-vitro experiments, a distinct decrease of the possible tractional force with increasing angles was shown for the Malmström extractor (0 degree--15.7 kp, 15 degrees--12.7 kp, 30 degrees--8.6 kp, 45 degrees--7.3 kp). The values for the new one-chamber system were significantly greater from a tractional angle of 15 degrees (0 degree--15.6 kp, 15 degrees--14.4 kp, 30 degrees--14.0 kp, 45 degrees--13.8). The clinical application of the new vacuum system was unproblematic and confirmed the feasibility of good traction. A very much smaller caput succedaneum was found in the baby. Especially in the training situation, the warning system enables a good surveillance before sudden detachment, but reduces the possible tractional force. CONCLUSIONS: The new vacuum system appears to enable the vaginal surgical delivery to be improved compared to the conventional Malmström extractor. After these promising approaches, a multicenter study was commenced in order to enable better evaluation of their clinical significance.

Equipment Design↗
PubMed1996

Impact of the introduction of new medical methods on therapeutic abortions at the Royal Infirmary of Edinburgh.

OBJECTIVE: To assess the impact of the introduction of new medical methods on the provision of therapeutic abortions at the Royal Infirmary Edinburgh. DESIGN: A review of the total number of abortions performed by medical and surgical means between 1989 and 1995 (inclusive); a prospective survey of the terminations of pregnancy (< or = 9 weeks of gestation) performed over the six-month period of January to June 1994; and a questionnaire of the reasons why women chosen a particular method. SETTING: Large teaching hospital in Scotland. SUBJECTS: One thousand and seven women seeking early pregnancy termination between January and June 1994. MAIN OUTCOME MEASURES: Proportion of pregnancies terminated by medical means; comparison of complete abortion rate, incidence of complications and morbidity following both medical and surgical methods (< or = 9 weeks of gestation); reasons for preference of the method of abortion. RESULTS: Since 1991 there has been a progressive increase in the number of medical abortions performed at the Royal Infirmary of Edinburgh, and by 1994 the majority of women (57%) seeking abortion at < or = 9 weeks chose a medical method. Women who chose medical abortion had more years at full-time education and were less likely to smoke (P < 0.04). Both medical and surgical methods were highly effective (> 96% complete abortion) with a low incidence of complications and morbidity. However, women who had chosen the medical method were less likely to receive antibiotics for suspected endometritis than their surgical counterparts (chi 2, P = 0.0001). CONCLUSIONS: If this trend towards medical methods in Edinburgh is repeated elsewhere, it will inevitably have an impact on gynaecological services by releasing staff and operating time for other purposes.

Abortifacient Agents, Steroidal↗
PubMed2006

Birth outcomes and pregnancy complications in women with a history of anorexia nervosa.

OBJECTIVE: To examine birth outcomes and pregnancy complications in women with a history of anorexia nervosa. DESIGN: Prospective cohort study. SETTING: Nationwide study in Sweden. POPULATION: All primiparous women--discharged from hospital with a diagnosis of anorexia nervosa during 1973 to 1996--who gave birth during 1983 to 2002 (n = 1000) were compared with all non-anorexia nervosa primiparous women who gave birth during the same years (n = 827,582). METHOD: Register study with data from Medical Birth Registry and National Patient Discharge Register. MAIN OUTCOME MEASURES: Pre-eclampsia, instrumental delivery, prematurity, small for gestational age, birthweight, Apgar score and perinatal mortality. RESULTS: Main birth outcome measures in women with a history of anorexia nervosa were very similar to the main population. The only observed differences were a slightly lower mean birthweight and lower adjusted odds ratios for instrumental delivery in the anorexia nervosa group compared with the main population. Neither severity of the disease nor a shorter recovery phase after first hospitalisation was related to pregnancy complications or birth outcomes. CONCLUSION: A history of anorexia nervosa was not associated with negative birth outcomes. Thus, special obstetric monitoring of pregnant women with history of anorexia nervosa does not seem to be warranted in a country with a satisfactory maternity surveillance.

Adolescent↗