scholarly journals Ultrasonographic diagnosis of twins in two pregnant bitches: case report

2020 ◽  
Vol 72 (1) ◽  
pp. 102-106
Author(s):  
L. Pavan ◽  
B. Gasser ◽  
V.J.C. Santos ◽  
M.C. Maronezi ◽  
P. Silva ◽  
...  
Keyword(s):  
Twin Pregnancy ◽  
Fetal Death ◽  
The Other ◽  
Multiple Pregnancies ◽  
Monochorionic Twins ◽  
Monochorionic Twin ◽  
Ultrasonographic Diagnosis ◽  
Placental Site ◽  
Twin Pregnancies ◽  
Two Bodies

ABSTRACT Multiple pregnancies in humans account for only 3% of pregnancies, 97-98% of which are twin pregnancies and the morbimortality is higher in the monochorionic twins when compared to dichorionic ones. The canine species is naturally multiparous, but the diagnosis of monochorionic twin pregnancy is not common. The objective of this report was to describe the ultrasonographic diagnosis of monochorionic twin pregnancies in two bitches [Pug (case 1) and Shih tzu (case 2)]. It was possible to verify the presence of one gestational vesicle containing two fetuses in each female by observing two heads or two bodies within the same placental site. These fetuses presented adequate viability and normal organogenesis. Their development was similar to the other fetuses. In case 1 they were stillborn and smaller than the other five live-born fetuses. The twins in case 2 were born alive, but they also appeared smaller when compared to the littermates. The gestational risks associated with this condition in pregnant bitches are still unknown, however, there are reports of fetal death in monochorionic pregnancies in this species. Therefore, ultrasonographic exam during pregnancy allows an early monochorionic diagnosis and monitoring the fetal viability could bring health benefits to both the female and the littermates.

scholarly journals Yolk Sacs in Twin Pregnancy

1998 ◽  
Vol 47 (3-4) ◽  
pp. 177-181 ◽  
Author(s):  
W. Malinowski
Keyword(s):  
Ectopic Pregnancy ◽  
Twin Pregnancy ◽  
First Trimester ◽  
Yolk Sac ◽  
Thin Wall ◽  
Multiple Pregnancies ◽  
Monochorionic Twin ◽  
The Relationship ◽  
Twin Pregnancies ◽  
Efficient Recognition

AbstractOBJECTIVE. The purpose of this study was to evaluate the relationship between the yolk sacs separated or not separated by septum and chorionicity twin pregnancies scanned early in the first trimester, and the relation between size and morphologic features of the yolk sac and the outcome of twin pregnancies.RESULTS. In all 38 sets of twins two yolk sacs were identified. During the first trimester of a dichorionic twin pregnancy, the yolk sacs were always separated by a septum and not separated (“Eight” sign) in monochorionic twin pregnancy. In five cases, one of yolk sac was abnormally large (> 8mm) and had thin wall. Four of the five mothers spontaneously aborted during the next 2-3 weeks. In one case of monochorionic twin ectopic pregnancy two yolk sacs were seen normally.CONCLUSION. The sonographic identification of yolk sacs in multiple pregnancies allows an early and efficient recognition of presence and chorionicity of twin pregnancy, both in intra – and extrauterine. Identification of abnormal yolk sac or yolk sacs suggests death of one or all embryos.

scholarly journals Effects of twin pregnancy chorionic properties on fetal outcomes: a comparative study

2020 ◽  
Vol 9 (9) ◽  
pp. 3802
Author(s):  
Gigi A. ◽  
Rachel Alexander ◽  
Radhamani K.
Keyword(s):  
Twin Pregnancy ◽  
Prospective Observational Study ◽  
Perinatal Outcomes ◽  
Fetal Outcomes ◽  
Monochorionic Twins ◽  
Monochorionic Twin ◽  
Medical College ◽  
Placental Membranes ◽  
The Mean ◽  
Twin Pregnancies

Background: Twins carry significant risks to both mothers and babies. The purpose of this study was to evaluate chorionicity and its impact on perinatal outcomes in twins.Methods: This prospective observational study was conducted in the department of obstetrics and gynecology, Government T. D. Medical College, Alappuzha, Kerala. A total of 106 cases of twin pregnancies were included in the prospective descriptive study. Based on the ultrasound results and methods of the postpartum pathologic examination of the placental membranes, the cases were divided into the twin group with monochorionic diamniotic (MCDA) and twin group with dichorionic diamniotic (DCDA group). The relationships of different chorionic properties and fetal outcomes were determined by comparing various fetal outcomes.Results: Among 106 twin pregnancies, 61.3% were DCDA twins, 38.7% were MCDA. Average maternal age of monochorionic twin was 25 and that of dichorionic twin was 27. Perinatal mortality of monochorionic twin was 14.7% when compared to 8.6% for dichorionic twin. The mean gestational age for monochorionic twin pregnancy was 34.78 weeks whereas it was 35.91 weeks for dichorionic pregnancy. Elective and emergency LSCS was done more for dichorionic twin pregnancies compared to monochorionic twin pregnancies. Low Apgar scores were seen in monochorionic twins compared to dichorionic twins.Conclusions: The incidence of fetal outcomes in the monochorionic group was inferior to those in the dichorionic group. The fetal outcomes may be improved by determining the chorionic properties in early pregnancy by using ultrasound and consequently planning for pregnancy monitoring and intervention.

scholarly journals The Incidence of Dichorionic Diamniotic Twin Pregnancy After Single Blastocyst Embryo Transfer and Zygosity: 8 Years of Single-Center Experience

2020 ◽  
Vol 23 (1) ◽  
pp. 51-54 ◽  
Author(s):  
Hiroko Konno ◽  
Takeshi Murakoshi ◽  
Kiyonori Miura ◽  
Hideaki Masuzaki
Keyword(s):  
Embryo Transfer ◽  
Twin Pregnancy ◽  
Hormone Replacement ◽  
First Trimester ◽  
Frozen Embryo Transfer ◽  
The Other ◽  
Placental Pathology ◽  
Monochorionic Twin ◽  
Single Center Experience ◽  
Twin Pregnancies

AbstractDichorionic diamniotic (DCDA) twin pregnancies after single blastocyst embryo transfer have been reported recently, although a blastocyst ovum is generally believed to divide into monochorionic twin pregnancy. We investigated the incidence of DCDA twin pregnancy after single blastocyst embryo transfer and their zygosity. This prospective cohort study included 655 consecutive twin pregnancies that were managed from 2006 to 2014 at our institution. Chorionicity and amnionicity were determined using first-trimester ultrasonography and/or placental pathology. Zygosity was analyzed if the cases were DCDA twins after single blastocyst embryo transfer. Among 655 twin pregnancies, there were 348 DCDA cases, 295 monochorionic diamniotic (MCDA) cases and 12 monochorionic monoamniotic cases. Single blastocyst embryo transfer was performed in 43 cases. Six out of the 43 (14%) cases involved DCDA twin pregnancies and the other 37 cases involved MCDA twin pregnancies. Three DCDA twins born after single blastocyst embryo transfer, wherein frozen embryo transfer (FET) was performed in the natural cycle, were dizygotic, and the other three cases, wherein FET with hormone replacement therapy was performed, were monozygotic. DCDA twin pregnancy occurred in 14% (7% for monozygotic and 7% for dizygotic) of twin pregnancies after single blastocyst embryo transfer cases.

scholarly journals Assessing an impact on perinatal outcome in monochorionic and dichorionic twin pregnancy complicated with discordant fetal growth

2021 ◽  
Vol 15 (1) ◽  
pp. 51-60
Author(s):  
K. V. Kostyukov ◽  
K. A. Gladkova ◽  
O. V. Ionov
Keyword(s):  
Body Weight ◽  
Fetal Growth ◽  
Twin Pregnancy ◽  
Reproductive Technologies ◽  
Morbidity And Mortality ◽  
Monochorionic Twins ◽  
Monochorionic Twin ◽  
Antenatal Period ◽  
Increased Risk ◽  
Twin Pregnancies

Introduction. Multifetal pregnancy is associated with an increased risk of perinatal morbidity and mortality. Type of placentation and discordant fetal growth may be risk factors of adverse pregnancy outcomes.Aim: to compare an impact of dichorionic and monochorionic twin pregnancies with symmetric and discordant fetal growth on perinatal outcomes, as well as morbidity and mortality.Materials and Methods. There was conducted a retrospective study of 485 pregnant women and paired 959 newborns. Depending on the type of chorionicity, subjects were stratified into two study groups being further subdivided into based on describing fetal weight discordance. The antenatal period and the neonatal outcome of newborns in groups and subgroups were compared.Results. We analyzed 308 dichorionic and 177 monochorionic twin pregnancies. It was found that neonate discordant growth was observed in 5.4 % and 13.4 % (p < 0.001), respectively. The incidence of assisted reproductive technologies was higher in dichorionic than in monochorionic twins comprising 66.5 and 40.7 % (р < 0.001). Antenatal mortality in monochorionic vs. dichorionic twins was by 8-fold higher. The preterm birth rate in monochorionic vs. dichorionic twins was 74.6 and 62.7% (p = 0.009), respectively. Neonate body weight in monochorionic vs. dichorionic twins was lowered comprising 1991 and 2430 gr. (р < 0.001), respectively. Low Apgar scores were more common for monochorionic twins with discordant body weight. The rate of early neonatal mortality in monochorionic vs. dichorionic twins was 4.4 % vs. 1.5 % (p = 0.009), whereas in dichorionic vs. monochorionic twins with weight discordance it was up to 5.8 and 10.5% (р < 0.001), respectively.Conclusion. Monochorionic twin pregnancy complicated with growth discordance is associated with a higher risk of adverse antenatal period as well as neonatal morbidity and mortality compared to symmetric DCDA twins. Chorionicity and growth discordancy represent important predictors for outcome of twin pregnancy.

Yearly Changes in Stillbirth Rates of Zygotic Twins in Japan, 1975-1994

1998 ◽  
Vol 47 (1) ◽  
pp. 19-30 ◽  
Author(s):  
Y. Imaizumi ◽  
K. Nonaka
Keyword(s):  
Medical Care ◽  
Twin Pregnancy ◽  
Japanese Women ◽  
Stillbirth Rate ◽  
Monochorionic Twin ◽  
Mz Twins ◽  
Twin Pregnancies

AbstractThe stillbirth rates decreased to 2/3 for MZ male twins, 1/2 for MZ female twins, and under 1/2 for DZ twins for both sexes during the 19-year period from 1975 in Japan. The stillbirth rate was significantly higher in MZ males than MZ females in each year, whereas stillbirth rates of DZ twins for both sexes indicated similar values during that period. After 1986, stillbirth rates were more than 2 times higher in MZ twins than in singletons and in DZ twins. The higher stillbirth rate of MZ twins as opposed to DZ twins could be related to monochorionic twin pairs in MZ twins. The stillbirth rate decreased more drastically in twins for both zygosities than in singleton births during the 34-year period from 1960. However, declining rates of stillbirths may be attributed to medical care during twin pregnancies. Recommendation of an optimum day to give birth for twin pregnancy is 37-38 weeks for Japanese women.

P10.01: Diffusion MRI findings in monochorionic twin pregnancies after spontaneous intrauterine fetal death

2009 ◽  
Vol 34 (S1) ◽  
pp. 214-214
Author(s):  
S. Lipitz ◽  
B. Weisz ◽  
B. Chayen ◽  
L. Gindes ◽  
R. Achiron ◽  
...  
Keyword(s):  
Diffusion Mri ◽  
Fetal Death ◽  
Intrauterine Fetal Death ◽  
Mri Findings ◽  
Monochorionic Twin ◽  
Twin Pregnancies

Prospective risk of intrauterine death of monochorionic twins: update

2016 ◽  
Vol 44 (8) ◽  
Author(s):  
Teresinha Simões ◽  
Alexandra Queirós ◽  
Ana Teresa Marujo ◽  
Sandra Valdoleiros ◽  
Patricia Silva ◽  
...  
Keyword(s):  
Preterm Birth ◽  
Fetal Death ◽  
Intrauterine Death ◽  
Monochorionic Twins ◽  
Death Rates ◽  
Gestational Period ◽  
Period Data ◽  
Prospective Risk ◽  
Twin Pregnancies ◽  
Over Time

AbstractObjective:To calculate an updated prospective risk of fetal death in monochorionic-biamniotic (MCBA) twins.Study design:We evaluated 520 MCBA twin pregnancies that had intensive prenatal surveillance and delivered in a single Portuguese referral center. The prospective risk of fetal death was calculated as the total number of deaths at the beginning of the gestational period divided by the number of continuing pregnancies at or beyond that period. Data were compared to the 2006 previous report.Results:Nearly 80% of the neonates weighed <2500 g, including 13.5% who weighed <1500 g. Half were born at <36 weeks, including 13.8% who were born at <32 weeks. The data indicate an increased IUFD rate over time – 16 fetal deaths per pregnancy (3.1%) and 22 IUFDs per fetus (2.1%). The rate of IUFD after 32–33 weeks, however, was halved (1/187 pregnancies and 1/365 fetuses, 0.5 and 0.3%, respectively).Conclusion:Intensive prenatal surveillance might decrease the unexpected fetal death rates after 33 week’s gestation and our data do not support elective preterm birth for uncomplicated MCBA twins.

scholarly journals Risk factors for fetal death after radiofrequency ablation for complicated monochorionic twin pregnancies

2018 ◽  
Vol 38 (7) ◽  
pp. 499-503 ◽  
Author(s):  
Luming Sun ◽  
Gang Zou ◽  
Yingjun Yang ◽  
Fenhe Zhou ◽  
Duan Tao
Keyword(s):  
Risk Factors ◽  
Radiofrequency Ablation ◽  
Fetal Death ◽  
Monochorionic Twin ◽  
Twin Pregnancies

Twin Anemia-Polycythemia Sequence: Perinatal Management and Outcome

2015 ◽  
Vol 40 (1) ◽  
pp. 28-34 ◽  
Author(s):  
Eran Ashwal ◽  
Yoav Yinon ◽  
Michal Fishel-Bartal ◽  
Abraham Tsur ◽  
Benjamin Chayen ◽  
...  
Keyword(s):  
Gestational Age ◽  
Neonatal Morbidity ◽  
Control Group ◽  
Monochorionic Twins ◽  
Monochorionic Twin ◽  
Gestational Age At Delivery ◽  
Perinatal Management ◽  
Intrauterine Blood Transfusion ◽  
And Control ◽  
Twin Pregnancies

Objective: To determine the perinatal outcome of monochorionic twin pregnancies complicated by twin anemia-polycythemia sequence (TAPS). Methods: All monochorionic twins diagnosed with TAPS between 2011 and 2014 were included. Each twin pair with TAPS (study group) was compared with 2 uncomplicated monochorionic twin pairs who were matched for gestational age at delivery (control group). Neonatal morbidity and mortality were evaluated. Results: During the study period, 179 monochorionic twins were followed at our center, of whom 46 underwent laser ablation due to twin-to-twin transfusion syndrome. TAPS was diagnosed in 10 cases; 8 of them were spontaneous, and 2 occurred following laser surgery. Out of 7 patients diagnosed prenatally with TAPS, 5 cases were managed expectantly, and 2 cases were treated with intrauterine blood transfusion. The rates of severe and mild central nervous system lesions on postnatal ultrasound were similar in the TAPS group and control group (5.0 vs. 2.5%, p = 0.61, and 5.0 vs. 12.5%, p = 0.25, respectively). Additionally, severe neonatal morbidity was comparable between the groups. All neonates were alive at 1 month of age. Conclusion: The neonatal outcome of monocohorionic twins affected by TAPS is favorable and comparable to gestational age-matched uncomplicated monochorionic twins.

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