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PubMed2004

Multifetal pregnancy reduction of triplet and higher-order multiple pregnancies to twins.

This systematic review was performed to assess the effects of multifetal pregnancy reduction for women with triplet and higher-order multiple pregnancies on fetal loss, preterm birth, and perinatal and infant mortality and morbidity. From nonrandomized studies, multifetal pregnancy reduction seems to be an effective treatment option, with outcomes comparable to those obtained from twin pregnancies conceived spontaneously or after assisted reproductive techniques.

Female↗

PubMed1999

Genetic amniocentesis after multifetal pregnancy reduction.

OBJECTIVE: Our purpose was to evaluate the pregnancy loss rate resulting from genetic amniocentesis after multifetal pregnancy reduction. STUDY DESIGN: A cohort study was performed in pregnancies with maternal age >30 years. Pregnancy loss in a study population of 127 patients who underwent genetic amniocentesis after multifetal pregnancy reduction were compared with a control group of 167 patients who did not have genetic amniocentesis after multifetal pregnancy reduction. RESULTS: The pregnancy loss rate in patients who underwent genetic amniocentesis after multifetal pregnancy reduction was 3.1% (4/127 cases) compared with 7.2% (12/167 cases) in the controls (P >.05). In the study group evidence of infection was found in only 1 case, in which the pregnancy loss occurred 1 day after the amniocentesis. In the other cases the pregnancy losses occurred 5 weeks after genetic amniocentesis, and these losses could not be directly attributed to either genetic amniocentesis or the multifetal reduction procedure. CONCLUSION: Our data suggest that the performance of genetic amniocentesis after multifetal pregnancy reduction does not increase the risk of pregnancy loss over that observed in association with the reduction itself.

Adult↗

PubMed1996

Maternal serum analyte levels after first-trimester multifetal pregnancy reduction.

OBJECTIVE: Our purpose was to assess the effect of multifetal pregnancy reduction on maternal serum levels of analytes used for screening low-risk women for fetal chromosome abnormalities and neural tube defects. STUDY DESIGN: Peripheral blood samples were obtained between 15.09 and 20.9 weeks' gestation from 10 consecutive women who had undergone first-trimester multifetal pregnancy reduction. The samples were assayed for levels of alpha-fetoprotein, human chorionic gonadotropin, and unconjugated estriol. Analyte concentrations were interpreted within our maternal serum screening program. RESULTS: Levels of alpha-fetoprotein were significantly elevated in all samples. In each pregnancy levels of human chorionic gonadotropin and unconjugated estriol were consistent with the number of continuing gestations. CONCLUSIONS: First-trimester multifetal reduction does not alter second-trimester levels of human chorionic gonadotropin and unconjugated estriol. Further study is needed to determine whether these analytes could be used to screen pregnancies for fetal chromosome abnormalities after first-trimester multifetal reduction.

Chorionic Gonadotropin↗

PubMed1999

Multifetal pregnancy reduction: modification of the technique and analysis of the outcome.

OBJECTIVE: To modify the technique of multifetal pregnancy reduction and to study the outcome of reduced twins in comparison with nonreduced twins and high-order multiple gestations. DESIGN: Prospective controlled study. SETTING: The Egyptian IVF-ET Center, Cairo. PATIENT(S): Seventy-five patients with high-order multiple pregnancies resulting from assisted reproduction. Controls were 40 nonreduced twin pregnancies and 22 high-order multiple gestations. INTERVENTION(S): Transvaginal ultrasonically guided multifetal pregnancy reduction was performed. The first 30 cases were done using KCl as a cardiotoxic agent. The modified technique was used for the last 45 cases at an earlier gestational age (approximately 7 weeks) by eliminating the use of KCI and by aspirating the embryonic parts. MAIN OUTCOME MEASURE(S): Miscarriage rate, gestational age at delivery, birth weight, and pregnancy complications. RESULT(S): Using the modified technique, the miscarriage rate was 8.8% and 41 patients delivered between 32 and 39 weeks of gestation (mean+/-SD, 36.9+/-2.45 weeks). The mean (+/-SD) birth weight was 2,450.51+/-235.44 g. The miscarriage rate, fetal wastage rate, mean gestational age, and mean birth weight were similar in reduced and nonreduced twins and were significantly better than in nonreduced triplets and quadruplets. CONCLUSION(S): The modified technique of multifetal pregnancy reduction significantly improved outcomes, which were similar to those of nonreduced twins resulting from assisted reproduction and significantly better than those of nonreduced triplets and quadruplets.

Female↗

PubMed1996

Attitudes of in vitro fertilization and intrauterine insemination couples toward multiple gestation pregnancy and multifetal pregnancy reduction.

OBJECTIVE: To determine attitudes regarding multiple pregnancy and multifetal pregnancy reduction in couples embarking on gonadotropin therapy. DESIGN: Questionnaire given to couples initiating gonadotropin therapy. SETTING: University hospital-based infertility unit. PATIENTS: Twenty-seven couples undergoing IVF and 50 couples undergoing IUI. RESULTS: The groups' responses tended to be quite similar, with all groups reporting declining favorability ratings as the fetal order increased. The IUI group did feel more favorable than the IVF group toward all gestational outcomes and less favorable toward multifetal pregnancy reduction. A history of live births and length of infertility had no significant impact on the results. CONCLUSION: Couples undergoing gonadotropin therapy have an overall favorable attitude toward multiple gestational pregnancies of triplets or twins and an increased willingness to consider multifetal pregnancy reduction for quadruplets and more.

Attitude↗

PubMed1994

Transabdominal versus transcervical and transvaginal multifetal pregnancy reduction: international collaborative experience of more than one thousand cases.

OBJECTIVES: Two major approaches for multifetal pregnancy reduction have been developed over the past several years: transabdominal potassium chloride by injection and pelvic procedures by either transcervical aspiration or transvaginal potassium chloride injection or by an automated spring-loaded puncture device. The purpose of this study was to create the largest database from among the world's largest centers to assess possible differences in efficacy and complication rates by transabdominal or transcervical or multifetal pregnancy reduction. STUDY DESIGN: Data on over 1000 completed pregnancies that underwent multifetal pregnancy reduction by both methods from major centers with among the highest worldwide experience were combined. Transabdominal cases were divided temporally (1986 through 1991 and 1991 through 1993). RESULTS: Transabdominal multifetal pregnancy reduction was successfully performed on 846 patients and transcervical or transvaginal on 238 patients. Transcervical or transvaginal reduction is performed earlier and starts and finishes with fewer embryos. In 12.6% of cases transcervical or transvaginal reduction left a singleton as opposed to 4.4% for transabdominal reduction. Pregnancy losses (up to 24 weeks) were observed in 13.1% of transcervical or transvaginal cases and in 16.2% of transabdominal cases early in the series and 8.8% of late transabdominal cases. Transcervical or transvaginal reduction may be safer very early in gestation and transabdominal safer later in the first trimester. Premature deliveries were comparable, with only about 5% delivered between 25 and 28 weeks. The smaller starting numbers for transcervical and transvaginal reduction may explain a slightly higher term delivery rate. The transabdominal route tends to reduce the fundal embryos and the transcervical and transvaginal the lower ones. The significance of this is not clear. CONCLUSIONS: (1) Multifetal pregnancy reduction by either method is a relatively safe and efficient method for improving outcome in multifetal pregnancies. (2) More than 84% are delivered at > 33 weeks. (3) The experience and preference of the operator are probably the key determinants for an individual patient. (4) An inverse relationship of starting and finishing number to loss rates and gestational age at delivery suggests that there still is a cost of iatrogenic multifetal pregnancies, even if multifetal pregnancy reduction can be successfully performed.

Abdomen↗

PubMedDate not supplied

Multifetal pregnancy reduction. A review of an evolving technology and its psychosocial implications.

Multifetal pregnancy reduction is the elective termination of gestation of a preselected number of fetuses in a multiple pregnancy to improve perinatal outcome. As improved techniques of infertility treatment are yielding more high-order multiple gestations, multifetal pregnancy reduction is being performed more frequently. The authors review the abundant literature on technique, the moderate amount of literature on ethics, and the minimal literature on the psychological consequences of this procedure, and describe the experience of the patients and their partners. The complexities of studying this area are discussed. Besides management of psychiatric complications, liaison psychiatrists could play an active role in structuring multifetal pregnancy reduction programs to optimize counseling and the patients' experience.

Counseling↗

PubMed1995

The effect of multifetal pregnancy reduction on serum relaxin.

OBJECTIVE: To determine the effect of multifetal pregnancy reduction on circulating relaxin levels. METHODS: Patients with multifetal pregnancies had relaxin levels determined on the day of multifetal pregnancy reduction, after the procedure, and late in pregnancy. RESULTS: Forty-eight women (26 presenting with three fetuses and 22 with four or more) were studied. All pregnancies followed some form of ovulation induction. All pregnancies (except for one, which was reduced to a singleton) were reduced to twins. Pre-procedure, post-procedure and late-pregnancy relaxin levels were significantly higher in the in vitro fertilization (IVF)-gamete intrafallopian transfer (GIFT) group compared with the human menopausal gonadotropin (hMG)-alone group (P < .05). The initial number of fetuses had no significant effect on relaxin levels. Although post-procedure relaxin levels were significantly lower than pre-procedure levels (P = .002), relaxin levels continued to decrease throughout pregnancy, as evidenced by even lower levels later on (P = .0001). CONCLUSIONS: Serum relaxin levels were significantly higher in the IVF-GIFT group than in the hMG-alone group, which probably reflects more aggressive ovulation induction in the former. Because relaxin levels continued to decrease throughout pregnancy, the difference observed between pre- and post-procedure levels are not considered to be due to the procedure itself.

Female↗

PubMed2000

Chorionic villus sampling before multifetal pregnancy reduction.

OBJECTIVE: This study was undertaken to determine the technical feasibility and accuracy of chorionic villus sampling before multifetal pregnancy reduction and to determine whether sampling increases the pregnancy loss rate after the reduction procedure. STUDY DESIGN: Between January 22, 1986, and January 20, 2000, a total of 1183 patients underwent first-trimester multifetal pregnancy reduction at Mount Sinai Medical Center. Chorionic villus sampling was attempted in 86 patients before the reduction procedure. Information on the technical success and accuracy of chorionic villus sampling, as well as pregnancy outcome, was collected on all patients. Pregnancy loss rates before 24 weeks' gestation in patients undergoing chorionic villus sampling before multifetal pregnancy reduction were compared with rates in patients not undergoing sampling. RESULTS: Chorionic villus sampling was successfully completed in 85 (98.8%) of 86 patients in whom sampling was attempted. Of 166 fetuses, 165 (99.4%) were successfully sampled. Of 165 fetuses, 3 (1.8%) had karyotypic abnormalities. Sampling errors were probably made in 2 (1.2%) of 165 fetuses. Of the 73 patients who have been delivered or are beyond 24 weeks' gestation, only 1 patient (1.4%) had a pregnancy loss after the multifetal pregnancy reduction. CONCLUSIONS: Chorionic villus sampling before multifetal pregnancy reduction is technically feasible and accurate, with an acceptably low sampling error rate. Chorionic villus sampling before multifetal pregnancy reduction appears to be safe and does not increase the risk of loss after the reduction procedure.

Adult↗

PubMed2002

[Analysis of 55 cases of transvaginal multifetal pregnancy reduction].

OBJECTIVE: To report the outcomes of transvaginal ultrasound-guided multifetal pregnancy reduction (MFPR) in early high-order multiple gestation. METHODS: Fifty-five cases of high-order multiple pregnancy including 1 septuplet, 7 quintuplets, 16 quadruplets and 31 triplets resulted from either superovulation/intrauterine insemination or in vitro fertilization-embryo transfer, were treated by transvaginal ultrasound guided MFPR at 49 - 79 days of gestational age. Their outcomes and complications were reported. RESULTS: Multifetal reduction were successfully done in 53 cases (96%). Miscarriage occurred in 8 patients (15%). Twenty-one cases (47%) were premature delivery and 24 patients underwent term delivery resulting in 87 infants. Five preterm infants died of neonatal respiratory distress syndrome. Among them none has malformation. Of the 82 live infants, 1 had hexadactyly and another arterial septum defect occurred. No organ injury, massive hemorrhage and infection occurred after MFPR. CONCLUSIONS: MFPR during early pregnancy is a safe, effective, simple operation for the purpose of reducing perinatal and maternal complication.

Female↗

PubMed1994

Improved results in multifetal pregnancy reduction: a report of 72 cases.

OBJECTIVE: To evaluate pregnancy outcome after either transabdominal or transvaginal multifetal pregnancy reduction. DESIGN: A study of 72 consecutive multifetal pregnancy reductions. SETTING: Department of Obstetrics and Gynecology, The Chaim Sheba Medical Center Tel Hashomer, Israel. PATIENTS: Seventy-two patients with multifetal pregnancies: 2 twins, 27 triplets, 26 quadruplets, 10 quintuplets, 3 sextuplets, 1 septuplet, 2 nontuplets, and one pregnancy with 12 fetuses. INTERVENTION: Multifetal pregnancy reduction was performed at 9 to 13 weeks' gestation by either transabdominal or transvaginal potassium chloride injection. MAIN OUTCOME MEASURES: Early and late complications related to the procedure, outcome of pregnancy, and comparison of two periods. RESULTS: Procedures performed between 1984 and 1989 (36 patients) were associated with a 33.3% pregnancy loss, whereas those performed between 1990 and 1992 (36 patients) were associated with no pregnancy loss. Of the 17 patients with quintuplets or more, 10 (59%) delivered live and healthy newborns. No difference was found when comparing the transabdominal and the transvaginal approaches. CONCLUSIONS: Both transvaginal and transabdominal approaches are comparable. There is a remarkable decrease in pregnancy loss with experience.

Abortion, Therapeutic↗

PubMed2007

Information-sharing among couples considering multifetal pregnancy reduction.

OBJECTIVE: To determine the information-sharing strategies of couples considering fetal reduction, and the impact of these strategies on the chances of encountering hostility in their social networks. DESIGN: Cross-sectional design of semistructured qualitative interviews, coded with respect to sharing strategies and level of personally directed hostility encountered. SETTING: Multiple Pregnancy Management Program, Comprehensive Genetics, New York, New York. PATIENT(S) AND INTERVENTION(S): Fifty women and their partners who were making a first visit to our maternal-fetal management facility, in order to consider the possibility of multifetal reduction as a pregnancy-management strategy. MAIN OUTCOME MEASURE(S): Development of information-sharing strategies, and the chances of encountering personally directed hostility regarding multifetal reduction associated with more and less selective strategies. RESULT(S): Four information-sharing strategies emerged from the analysis. Two of these strategies were relatively open (extended network, and both parents). Two other strategies were relatively selective (qualified family and friends, and defended relationship). The selective strategies were significantly less likely to encounter to encounter personally directed hostility (odds ratio, 3.88; 95% confidence intervals, 0.87-17.30). CONCLUSION(S): Selective sharing of information for couples considering multifetal prgnancy reduction is a potentially useful strategy for moderating potentially stressful relationships in their social networks. Clinics should find a way of integrating the discussion of selective sharing into their clinic's cultural repertoire of patient-support services.

Communication↗

PubMed1999

Multifetal pregnancy reduction in cases of threatened abortion of triplets.

OBJECTIVE: To investigate the course of pregnancy and fetal outcome after first-trimester multifetal pregnancy reduction (MFPR) in patients with triplet pregnancies and uterine bleeding. DESIGN: Case series of patients with threatened triplet pregnancies considered for MFPR. SETTING: Department of Obstetrics and Gynecology, Rabin Medical Center, Petah-Tiqva, Israel. PATIENT(S): Forty-two patients with triplet pregnancies and first-trimester uterine bleeding. INTERVENTION(S): At 10-15 weeks' gestation, MFPR with intracardiac injection of potassium chloride was performed. The procedures were performed 7-10 days after cessation of bleeding (9-13 weeks) or in the presence of minimal uterine bleeding (14-15 weeks). In patients with heavy uterine bleeding, MFPR was postponed. MAIN OUTCOME MEASURE(S): Early- and late-pregnancy complications related to the procedure, pregnancy outcome, and fetal survival. RESULT(S): Performance of MFPR at 14-15 weeks was associated with a higher abortion rate (38.5%), lower mean gestational age at delivery (30.6 weeks), and lower mean twin birth weight (1,376+/-218 g and 1,014+/-202 g) than was performance of MFPR at 10-13 weeks (18.8%, 33.2 weeks, and 1,720+/-245 g and 1,596+/-170 g, respectively). Abortion occurred in four of the five patients with moderate to heavy uterine bleeding who did not undergo MFPR; the fifth patient gave birth prematurely at 28 weeks, and two of the newborns died. CONCLUSION(S): Pregnancy outcome and fetal mortality and morbidity in triplet pregnancy after MFPR are directly correlated with duration and amount of first-trimester bleeding.

Abortion, Threatened↗

PubMed1997

Multifetal pregnancy reduction: a review of the world results for the period 1993-1996.

The objective of this work was to evaluate the outcome of multifetal pregnancy reduction and to provide an analysis of the ethical dilemmas associated with its application. The study design was based on data on over 1400 completed pregnancies that underwent multifetal pregnancy reduction as reported in the world literature during 1993-1996. The results were: A total of 1453 completed cases of multifetal pregnancy reduction are presented. The total survival rate was estimated to be 87.7%, resulting in a total pregnancy loss rate of 12.3%. The lowest survival rate is found to be in higher-order pregnancies of five or more fetuses (75.2%), whereas pregnancy loss rate seems to be similar for quadruplets, triplets and twins that underwent reduction (11.3%, 8.3% and 13.6%, respectively). A 33.3% of the total pregnancy loss rate occurred within four weeks from the procedure, whereas 66.7% occurred after the four weeks but at 24 weeks of gestation or earlier. The mean gestational age at delivery was estimated to be 33 weeks for pregnancies reduced to triplets, 35.8 weeks for those reduced to twins and 36.9 weeks for singletons, with 5% delivering at less than 28 weeks and 9.6% at 29-32 weeks. We conclude that multifetal pregnancy reduction has been established as an efficient and safe way to improve outcome of multifetal gestations, especially those with four or more fetuses and likely of triplets. As the experience from the procedure increases, it seems that reduction of triplets to twins can be offered to patients with satisfactory results. The reduction to singletons has not yet been established and is being performed only when medical indications exist. Prenatal genetic diagnosis should become an integral part of counselling on multiple pregnancy. Physicians should take whenever possible measures designed to prevent high multiple birth pregnancies. We also note that although multifetal pregnancy reduction improves significantly the outcome of multiple pregnancies, several ethical dilemmas arising from its application are still under dispute.

Abortion, Spontaneous↗

PubMed2001

Improvement in outcomes of multifetal pregnancy reduction with increased experience.

OBJECTIVE: This study was undertaken to evaluate a decade of data on multifetal pregnancy reductions at centers with extensive experiences. STUDY DESIGN: A total of 3513 completed cases from 11 centers in 5 countries were analyzed according to year (before 1990, 1991-1994, and 1995-1998), starting and finishing numbers of embryos or fetuses, and outcomes. RESULTS: With increasing experience there has been a considerable improvement in outcomes, with decreases in rates of both pregnancy loss and prematurity. Overall loss rates in the last few years were correlated strongly with starting and finishing numbers (starting number > or =6, 15.4%; starting number 5, 11.4%; starting number 4, 7.3%; starting number 3, 4.5%; starting number 2, 6.2%: finishing number 3, 18.4%; finishing number 2, 6.0%; finishing number 1, 6.7%). Birth weight discordance between surviving twins was increased with greater starting number. The proportion of cases with starting number > or =5 diminished from 23.4% to 15.9% to 12.2%. The proportion of patients >40 years old increased in the last 6 years to 9.3%. Gestational age at delivery did not vary with increasing maternal age but was inversely correlated with starting number. CONCLUSION: Multifetal pregnancy reduction outcomes at our centers for both losses and early prematurity have improved considerably with experience. Reductions from triplets to twins and now from quadruplets to twins carry outcomes as good as those of unreduced twin gestations. Patient demographic characteristics continues to change as more older women use assisted reproductive technologies. In terms of losses, prematurity, and growth, higher starting numbers carry worse outcomes.

Abortion, Spontaneous↗

PubMed2004

Pregnancy outcome after multifetal pregnancy reduction.

OBJECTIVE: To study the effects of multifetal pregnancy reduction (MFPR) as a means to reduce the adverse outcome of multiple gestations. METHODS: This was a retrospective study evaluating the outcome of 334 multiple pregnancies after embryo reduction. RESULTS: In 313 multiple pregnancies in which MFPR was performed before 15 weeks, the rates of miscarriage, preterm delivery <33 weeks, preterm delivery <36 weeks and total fetal loss were 9.12%, 13.33%, 38.60% and 16.25%, respectively, and median gestational age at delivery was 35 weeks. There was a significant correlation between miscarriage and the finishing number of fetuses. In 185 triplets reduced to twins, miscarriage, preterm delivery <33 weeks, preterm delivery <36 weeks and total fetal loss occurred in 8.25%, 11.18%, 40.59% and 15.41% of cases, respectively, and median gestational age at delivery was 36 weeks. In the subgroup of 32 reduced triplet pregnancies that also had second-trimester amniocentesis, the risk of miscarriage (3.13%) was not significantly different from that in the rest of the group. Among 21 twin pregnancies that had selective termination at or after 15 weeks, the risk of preterm delivery <33 weeks was three times higher than in the group of 22 twin pregnancies with first-trimester procedures. CONCLUSION: MFPR resulted in at least one live neonate in 83.75% of cases and was effective in reducing the risks of pregnancy loss and severe prematurity in quadruplets and higher-order pregnancies. The risk of miscarriage increased with increasing finishing number of fetuses. In reduced triplets gestation was prolonged in comparison with average figures reported in the literature. In twin pregnancies selective termination in the first trimester carries a lower risk of severe preterm delivery and this emphasizes the need for first-trimester diagnosis.

Abortion, Spontaneous↗

PubMed2000

Preparation for practice in the new millennium: a discussion of the moral implications of multifetal pregnancy reduction.

This article approaches the problem of multifetal pregnancy reduction from a moral perspective. It is one of many complex moral issues arising from reproductive technology and is one with which midwives and nurses are faced more frequently with advancing technology. The work is intended to be used as an educational tool for those who prepare tomorrow's nurses and midwives. The subject is discussed from three perspectives, the pregnant woman and her partner (clients), a midwife, and from a philosophical ethical perspective. In an attempt to introduce a degree of reality, the perspective of the clients is presented as a dialogue. The midwife's moral position and her professional difficulties are also discussed. The dialogue and discussion are supplemented with notes in which the issues raised by the characters are critically analysed and discussed. This article is designed to encourage reflection and critical thinking in tomorrow's health care professionals, and in those who have the responsibility of educating them for a future where reproductive technology is posed to generate more major moral quandaries.

Attitude of Health Personnel↗

PubMed1996

Multifetal pregnancy reduction: psychodynamic implications.

New reproductive technologies, such as advanced infertility treatments, may have significant implications for women's psychological experience of pregnancy and motherhood. This paper examines some of the psychodynamic implications of multifetal pregnancy reduction, a medical procedure in which some of the fetuses in a multiple pregnancy are aborted while other fetuses are carried to term. Forty-four women who had undergone pregnancy reductions were interviewed about their emotional experience of this medical intervention and their subsequent pregnancies. A qualitative analysis of their experience was conducted from five psychoanalytically-informed vantage points: drive theory, ego psychology, object relations theory, self psychology and a developmental perspective. Women experienced having to abort some of their fetuses as a stressful and distressing life event, and a fourth of the women experienced bereavement reactions which impaired their functioning for at least two weeks. Conscious and unconscious responses to the procedure included ambivalence, guilt, and a sense of narcissistic injury, increasing the complexity of their attachment to the remaining babies. However, the achievement of the developmental goal of parenting healthy birth children helped most women feel that they had made the right decision for themselves and their families. Further research is indicated, including interviews before the reduction and long-term follow-up of mothers and surviving children.

Adaptation, Psychological↗