95 results on '"Chaveeva P"'
Search Results
2. Fetal Medicine Foundation charts for fetal growth in twins
- Author
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Wright, A, Wright, D, Chaveeva, P, Molina, F S, Akolekar, R, Syngelaki, A, Petersen, O B, Kristensen, S E, Nicolaides, K H, Wright, A, Wright, D, Chaveeva, P, Molina, F S, Akolekar, R, Syngelaki, A, Petersen, O B, Kristensen, S E, and Nicolaides, K H
- Abstract
Objective To derive reference distributions of estimated fetal weight (EFW) in twins relative to singletons. Methods Gestational-age- and chorionicity-specific reference distributions for singleton percentiles and EFW were fitted to data on 4391 twin pregnancies with two liveborn fetuses from four European centers, including 3323 dichorionic (DC) and 1068 monochorionic diamniotic (MCDA) twin pregnancies. Gestational age was derived using the larger of the two crown–rump length measurements obtained during the first trimester of pregnancy. EFW was obtained from ultrasound measurements of head circumference, abdominal circumference and femur length using the Hadlock formula. Singleton percentiles were obtained using the Fetal Medicine Foundation population weight charts for singleton pregnancies. Hierarchical models were fitted to singleton Z-scores with autoregressive terms for serial correlations within the same fetus and between twins from the same pregnancy. Separate models were fitted for DC and MCDA twins. Results Fetuses from twin pregnancies tended to be smaller than singletons at the earliest gestational ages (16 weeks for MCDA and 20 weeks for DC twins). This was followed by a period of catch-up growth until around 24 weeks. After that, both DC and MCDA twins showed reduced growth. In DC twins, the EFW corresponding to the 50th percentile was at the 50th percentile of singleton pregnancies at 23 weeks, the 43rd percentile at 28 weeks, the 32nd percentile at 32 weeks and the 22nd percentile at 36 weeks. In MCDA twins, the EFW corresponding to the 50th percentile was at the 36th percentile of singleton pregnancies at 24 weeks, the 29th percentile at 28 weeks, the 19th percentile at 32 weeks and the 12th percentile at 36 weeks. Conclusions In DC and, to a greater extent, MCDA twin pregnancies, fetal growth is reduced compared with that observed in singleton pregnancies. Furthermore, after 24 weeks, the divergence in gr, OBJECTIVE: To derive reference distributions of estimated fetal weight (EFW) in twins relative to singletons.METHODS: Gestational-age- and chorionicity-specific reference distributions for singleton percentiles and EFW were fitted to data on 4391 twin pregnancies with two liveborn fetuses from four European centers, including 3323 dichorionic (DC) and 1068 monochorionic diamniotic (MCDA) twin pregnancies. Gestational age was derived using the larger of the two crown-rump length measurements obtained during the first trimester of pregnancy. EFW was obtained from ultrasound measurements of head circumference, abdominal circumference and femur length using the Hadlock formula. Singleton percentiles were obtained using the Fetal Medicine Foundation population weight charts for singleton pregnancies. Hierarchical models were fitted to singleton Z-scores with autoregressive terms for serial correlations within the same fetus and between twins from the same pregnancy. Separate models were fitted for DC and MCDA twins.RESULTS: Fetuses from twin pregnancies tended to be smaller than singletons at the earliest gestational ages (16 weeks for MCDA and 20 weeks for DC twins). This was followed by a period of catch-up growth until around 24 weeks. After that, both DC and MCDA twins showed reduced growth. In DC twins, the EFW corresponding to the 50th percentile was at the 50th percentile of singleton pregnancies at 23 weeks, the 43rd percentile at 28 weeks, the 32nd percentile at 32 weeks and the 22nd percentile at 36 weeks. In MCDA twins, the EFW corresponding to the 50th percentile was at the 36th percentile of singleton pregnancies at 24 weeks, the 29th percentile at 28 weeks, the 19th percentile at 32 weeks and the 12th percentile at 36 weeks.CONCLUSIONS: In DC and, to a greater extent, MCDA twin pregnancies, fetal growth is reduced compared with that observed in singleton pregnancies. Furthermore, after 24 weeks, the divergence in growth trajectories
- Published
- 2024
3. Concordance between US and MRI Two-Dimensional Measurement and Volumetric Segmentation in Fetal Ventriculomegaly
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George Hadjidekov, Gleb Haynatzki, Petya Chaveeva, Miroslav Nikolov, Gabriele Masselli, and Andrea Rossi
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fetal ventriculomegaly ,three-dimensional ultrasonography ,3D-US ,virtual organ computer-aided analysis ,VOCAL ,fetal MRI ,Medicine (General) ,R5-920 - Abstract
We provide a study comparison between two-dimensional measurement and volumetric (3D) segmentation of the lateral ventricles and brain structures in fetuses with isolated and non-isolated ventriculomegaly with 3D virtual organ computer-aided analysis (VOCAL) ultrasonography vs. magnetic resonance imaging (MRI) analyzed with 3D-Slicer software. In this cross-sectional study, 40 fetuses between 20 and 38 gestational weeks with various degrees of ventriculomegaly were included. A total of 71 ventricles were measured with ultrasound (US) and with MRI. A total of 64 sonographic ventricular volumes, 80 ventricular and 40 fetal brain MR volumes were segmented and analyzed using both imaging modalities by three observers. Sizes and volumes of the ventricles and brain parenchyma were independently analyzed by two radiologists, and interobserver correlation of the results with 3D fetal ultrasound data was performed. The semiautomated rotational multiplanar 3D VOCAL technique was performed for ultrasound volumetric measurements. Results were compared to manually extracted ventricular and total brain volumes in 3D-Slicer. Segmentation of fetal brain structures (cerebral and cerebellar hemispheres, brainstem, ventricles) performed independently by two radiologists showed high interobserver agreement. An excellent agreement between VOCAL and MRI volumetric and two-dimensional measurements was established, taking into account the intraclass correlation coefficients (ICC), and a Bland–Altman plot was established. US and MRI are valuable tools for performing fetal brain and ventricular volumetry for clinical prognosis and patient counseling. Our datasets could provide the backbone for further construction of quantitative normative trajectories of fetal intracranial structures and support earlier detection of abnormal brain development and ventriculomegaly, its timing and progression during gestation.
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- 2023
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4. Risk of Fetal Loss After Chorionic Villus Sampling in Twin Pregnancy Derived From Propensity Score Matching Analysis
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Gil, M. M., Rodríguez-Fernández, M., Elger, T., Akolekar, R., Syngelaki, A., Matallana, C. De Paco, Molina, F. S., Arocena, M. Gallardo, Chaveeva, P., Persico, N., Accurti, V., Kagan, K. O., Prodan, N., Cruz, J., and Nicolaides, K. H.
- Published
- 2022
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5. The Benefits of Testosterone Therapy in Poor Ovarian Responders Undergoing In Vitro Fertilisation (IVF)
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Petya Andreeva, Ivelina Oprova, Luboslava Valkova, Petya Chaveeva, Ivanka Dimova, and Atanas Shterev
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cycle cancellation ,in vitro fertilisation (ivf) ,poor ovarian responders (por) ,pregnancy rate (pr) ,testosterone ,Medicine - Abstract
Introduction: Poor ovarian responders are the most challenging patients in reproductive medicine and no successful treatment has been proposed. Androgens are thought to play an important role during early folliculogenesis and diminished levels are associated with decreased ovarian sensitivity to follicle-stimulating hormone. This study aimed to determine whether pretreatment with testosterone improves the results in poor responders undergoing in vitro fertilisation (IVF). Materials and methods: This observational pilot study enrolled 33 poor responders undergoing IVF. Eleven patients were pretreated with 250 mg intramuscular testosterone and compared to a control group of 22 patients. The participants were tested for free testosterone, dehydroepiandrosterone sulfate, sex hormone binding globulin, and anti-mullerian hormone (AMH). Results: The two groups had similar baseline characteristics. Significant improvement was reached in the hormones free testosterone, dehydroepiandrosterone sulfate, and sex hormone binding globulin in the testosterone-pretreatment group. No difference was detected in antral follicle count (5.06 versus 4.24); AMH (0.51 versus 0.53), mature oocytes (2.2 versus 2.32), and the number of embryos (1.2 versus 1.33) between the study and control groups, respectively. There was a slow improvement in fertilisation rate but without any significance (62.97% versus 57.61%). However, the cancellation rate of the ovarian stimulation was much greater in the control group (18.18%) in comparison with the study group (0.0%). Pregnancy rate (PR) in the testosterone group was higher than controls (PR per cycle: 27.3% versus 4.6; p=0.09). Conclusion: Based on the limited number of patients studied, pretreatment with testosterone seems to improve PR and cancellation rate in poor responders but failed to affect antral follicle count, AMH, and the number of mature oocytes and embryos. Given these results, further research would provide more certainty.
- Published
- 2020
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6. Autoimmune Polyglandular Syndrome Type 2 and Pregnancy
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Vesselina Yanachkova, Petya Chaveeva, Radiana Staynova, and Ralitsa Milcheva
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Addison’s disease ,autoimmune polyglandular syndro ,Medicine - Abstract
Autoimmune polyglandular syndromes are combinations of various endocrine and nonendocrine autoimmune diseases, as well as the presence of elevated organ-specific antibody titers. We present a clinical case of a 41-year-old pregnant patient with type 2 autoimmune polyglandular syndrome, combining Addison’s disease, Hashimoto’s thyroiditis and hypogonadism. The pregnancy was achieved after the use of assisted reproductive technology. During the pregnancy the patient was strictly monitored. Glucocorticoid and mineralocorticoid replacement therapy was adjusted according to the electrolyte profile and general condition of the patient. Management during pregnancy was difficult due to fluctuations in electrolyte levels, thyroid hormones and orthostatic manifestations. Prior to delivery adrenal crisis occurred, but the condition was successfully managed. No complications were reported for the mother and the newborn.
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- 2020
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7. Fetal Medicine Foundation charts for fetal growth in twins
- Author
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Wright, A., primary, Wright, D., additional, Chaveeva, P., additional, Molina, F. S., additional, Akolekar, R., additional, Syngelaki, A., additional, Petersen, O. B., additional, Kristensen, S. E., additional, and Nicolaides, K. H., additional
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- 2023
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8. Fetal Medicine Foundation charts for fetal growth in twins.
- Author
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Wright, A., Wright, D., Chaveeva, P., Molina, F. S., Akolekar, R., Syngelaki, A., Petersen, O. B., Kristensen, S. E., and Nicolaides, K. H.
- Abstract
Objective: To derive reference distributions of estimated fetal weight (EFW) in twins relative to singletons. Methods: Gestational‐age‐ and chorionicity‐specific reference distributions for singleton percentiles and EFW were fitted to data on 4391 twin pregnancies with two liveborn fetuses from four European centers, including 3323 dichorionic (DC) and 1068 monochorionic diamniotic (MCDA) twin pregnancies. Gestational age was derived using the larger of the two crown–rump length measurements obtained during the first trimester of pregnancy. EFW was obtained from ultrasound measurements of head circumference, abdominal circumference and femur length using the Hadlock formula. Singleton percentiles were obtained using the Fetal Medicine Foundation population weight charts for singleton pregnancies. Hierarchical models were fitted to singleton Z‐scores with autoregressive terms for serial correlations within the same fetus and between twins from the same pregnancy. Separate models were fitted for DC and MCDA twins. Results: Fetuses from twin pregnancies tended to be smaller than singletons at the earliest gestational ages (16 weeks for MCDA and 20 weeks for DC twins). This was followed by a period of catch‐up growth until around 24 weeks. After that, both DC and MCDA twins showed reduced growth. In DC twins, the EFW corresponding to the 50th percentile was at the 50th percentile of singleton pregnancies at 23 weeks, the 43rd percentile at 28 weeks, the 32nd percentile at 32 weeks and the 22nd percentile at 36 weeks. In MCDA twins, the EFW corresponding to the 50th percentile was at the 36th percentile of singleton pregnancies at 24 weeks, the 29th percentile at 28 weeks, the 19th percentile at 32 weeks and the 12th percentile at 36 weeks. Conclusions: In DC and, to a greater extent, MCDA twin pregnancies, fetal growth is reduced compared with that observed in singleton pregnancies. Furthermore, after 24 weeks, the divergence in growth trajectories between twin and singleton pregnancies becomes more pronounced as gestational age increases. © 2023 International Society of Ultrasound in Obstetrics and Gynecology. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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9. Intrafetal laser ablation for embryo reduction from dichorionic triplets to dichorionic twins
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Chaveeva, P., Peeva, G., Pugliese, S. G., Shterev, A., and Nicolaides, K. H.
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- 2017
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10. Risk of fetal loss after chorionic villus sampling in twin pregnancy derived from propensity score matching analysis
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Gil, M. M., primary, Rodríguez‐Fernández, M., additional, Elger, T., additional, Akolekar, R., additional, Syngelaki, A., additional, De Paco Matallana, C., additional, Molina, F. S., additional, Gallardo Arocena, M., additional, Chaveeva, P., additional, Persico, N., additional, Accurti, V., additional, Kagan, K. O., additional, Prodan, N., additional, Cruz, J., additional, and Nicolaides, K. H., additional
- Published
- 2022
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11. OP05.03: First trimester biparietal diameter for pregnancy dating.
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de Paco Matallana, C., Rolle, V., Fidalgo, A., Jani, J., Chaveeva, P., Santacruz, B., Nicolaides, K., and Gil, M.
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PREGNANCY outcomes ,INDUCED labor (Obstetrics) ,FETAL ultrasonic imaging ,EUCLIDEAN distance ,LENGTH measurement - Abstract
This article evaluates the accuracy of using fetal biparietal diameter (BPD) at 11-13 weeks for pregnancy dating compared to the measurement of Crown-rump length (CRL). The study was conducted in Spain, UK, Belgium, and Bulgaria and included women with singleton, non-malformed fetus/neonate. The researchers developed a formula for pregnancy dating based on BPD and validated it against commonly used formulas. The results showed that pregnancy dating based on ultrasound measurement of fetal BPD is a reliable alternative to dating based on CRL. [Extracted from the article]
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- 2024
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12. Fetal loss after chorionic villus sampling in twin pregnancy
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Elger, T., primary, Akolekar, R., additional, Syngelaki, A., additional, De Paco Matallana, C., additional, Molina, F. S., additional, Gallardo Arozena, M., additional, Chaveeva, P., additional, Persico, N., additional, Accurti, V., additional, Kagan, K. O., additional, Prodan, N., additional, Cruz, J., additional, and Nicolaides, K. H., additional
- Published
- 2021
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13. Risk of miscarriage after chorionic villus sampling
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Gil Mira, María del Mar, Molina, F. S., Rodríguez Fernández, M., Delgado, J. L., Carrillo, M. P., Jani, J., Plasencia, W., Stratieva, V., Maíz, N., Carretero, P., Lismonde, A., Chaveeva, P., Burgos, J., Santacruz Martín, Belén, Zamora, J., and De Paco Matallana, C.
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fluids and secretions ,Pregnancy complications ,Adverse pregnancy outcome ,Prenatal diagnosis ,Invasive testing ,Chorionic villus sampling ,Invasive procedures ,First-trimester screening ,equipment and supplies ,Miscarriage - Abstract
Objective To estimate the risk of miscarriage associated to chorionic villus sampling (CVS). Methods This was a retrospective cohort study performed in eight fetal‐medicine units in Spain, Belgium and Bulgaria. Two populations were included: first, all singleton pregnancies attending to their first‐trimester assessment in Murcia, Spain, and second, all singleton pregnancies having a CVS following first‐trimester assessment at any of the participating centers. We used propensity score matching analysis to estimate the association between CVS and miscarriage. We compared risks of miscarriage of CVS and non‐CVS groups after propensity score matching (1:1 ratio). This procedure creates two comparable groups balancing the maternal and pregnancy characteristics that lead to CVS, in a similar way in which randomization operates in a randomized clinical trial. Results The study population consisted of 22,250 participants in the non‐CVS group and 3,613 in the CVS group. The incidence of miscarriage in the CVS group was 2.1% (77/3,613), which was significantly higher than the 0.9% (207/22,250) in the non‐CVS group (p
- Published
- 2020
14. Prediction of pre‐eclampsia in twin pregnancy by maternal factors and biomarkers at 11–13 weeks' gestation: data from EVENTS trial
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Benkő, Z., primary, Wright, A., additional, Rehal, A., additional, Cimpoca, B., additional, Syngelaki, A., additional, Delgado, J. L., additional, Tsokaki, T., additional, De Alvarado, M., additional, Vojtassakova, D., additional, Malligiannis Ntalianis, K., additional, Chaveeva, P., additional, Del Campo, A., additional, De Ganzo, T., additional, Resta, C., additional, Atanasova, V., additional, Accurti, V., additional, Villalain, C., additional, Aguilera, J., additional, Dojcinovska, D., additional, O'Gorman, N., additional, Plasencia, W., additional, Zingler, E., additional, Dutemeyer, V., additional, Alvar, B., additional, Casanova, M. C., additional, and Nicolaides, K. H., additional
- Published
- 2021
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15. Meta-analysis of second-trimester markers for trisomy 21
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Agathokleous, M., Chaveeva, P., Poon, L. C. Y., Kosinski, P., and Nicolaides, K. H.
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- 2013
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16. New approach for estimating risk of miscarriage after chorionic villus sampling
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Gil, M. M., primary, Molina, F. S., additional, Rodríguez‐Fernández, M., additional, Delgado, J. L., additional, Carrillo, M. P., additional, Jani, J., additional, Plasencia, W., additional, Stratieva, V., additional, Maíz, N., additional, Carretero, P., additional, Lismonde, A., additional, Chaveeva, P., additional, Burgos, J., additional, Santacruz, B., additional, Zamora, J., additional, and De Paco Matallana, C., additional
- Published
- 2020
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17. OC11.08: Risk of miscarriage after chorionic villus sampling
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Gil, M.M., primary, Molina, F., additional, Rodriguez‐Fernandez, M., additional, Delgado, J., additional, Carrillo, M.P., additional, Jani, J., additional, Plasencia, W., additional, Stratieva, V., additional, Maiz, N., additional, Carretero, P., additional, Lismonde, A., additional, Chaveeva, P., additional, Burgos, J., additional, Santacruz, B., additional, Zamora, J., additional, and Paco Matallana, C., additional
- Published
- 2020
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18. First‐trimester screening for trisomies in pregnancies with vanishing twin
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Chaveeva, P., primary, Wright, A., additional, Syngelaki, A., additional, Konstantinidou, L., additional, Wright, D., additional, and Nicolaides, K. H., additional
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- 2020
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19. Revised competing‐risks model in screening for pre‐eclampsia in twin pregnancy by maternal characteristics and medical history
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Benkő, Z., primary, Chaveeva, P., additional, Paco Matallana, C., additional, Zingler, E., additional, Wright, D., additional, and Nicolaides, K. H., additional
- Published
- 2019
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20. Validation of competing‐risks model in screening for pre‐eclampsia in twin pregnancy by maternal factors
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Benkő, Z., primary, Chaveeva, P., additional, de Paco Matallana, C., additional, Zingler, E., additional, Wright, A., additional, Wright, D., additional, and Nicolaides, K. H., additional
- Published
- 2019
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21. [THE GESTATIONAL DIABETES MELLITUS AS A SPECIFIC PREGNANCY STATE]
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Ianatchkova, V., Chaveeva, P., and Atanas Shterev
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Diabetes, Gestational ,Fetal Diseases ,Pregnancy ,Risk Factors ,Carbohydrate Metabolism ,Humans ,Female - Abstract
Pregnancy is a condition which result in a significant changes in the course of the metabolic processes in woman's body. The impairments in the carbohydrate metabolism, in particular Gestational Diabetes mellitus are the most frequent observed during pregnancy. Extremely important for the clinician is to knows the risk factors, which can predispose to the appearance of these disorders, and in time to explores the patients. This allows to avoid both early and late complications for the mother and her future child.
- Published
- 2016
22. Trichorionic and Dichorionic Triplet Pregnancies at 10-14 Weeks: Outcome after Embryo Reduction Compared to Expectant Management
- Author
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Chaveeva, P., primary, Kosinski, P., additional, Puglia, D., additional, Poon, L.C., additional, and Nicolaides, K.H., additional
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- 2013
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23. Early vaginal progesterone versus placebo in twin pregnancies for the prevention of spontaneous preterm birth: a randomized, double-blind trial.
- Author
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Rehal, Anoop, Benkő, Zsófia, De Paco Matallana, Catalina, Syngelaki, Argyro, Janga, Deepa, Cicero, Simona, Akolekar, Ranjit, Singh, Mandeep, Chaveeva, Petya, Burgos, Jorge, Molina, Francisca S., Savvidou, Makrina, De La Calle, Maria, Persico, Nicola, Quezada Rojas, Maria Soledad, Sau, Ashis, Greco, Elena, O'Gorman, Neil, Plasencia, Walter, and Pereira, Susana
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PREMATURE labor ,VAGINAL medication ,NEURODEVELOPMENTAL treatment for infants ,PROGESTERONE ,BIRTH control ,LOGISTIC regression analysis ,NEONATAL death ,RESEARCH ,PREMATURE infants ,DURATION of pregnancy ,RESEARCH methodology ,EVALUATION research ,MEDICAL cooperation ,TREATMENT effectiveness ,COMPARATIVE studies ,BLIND experiment ,PRENATAL care ,MULTIPLE pregnancy - Abstract
Background: In women with a singleton pregnancy and sonographic short cervix in midgestation, vaginal administration of progesterone reduces the risk of early preterm birth and improves neonatal outcomes without any demonstrable deleterious effects on childhood neurodevelopment. In women with twin pregnancies, the rate of spontaneous early preterm birth is 10 times higher than that in singletons, and in this respect, all twins are at an increased risk of preterm birth. However, 6 trials in unselected twin pregnancies reported that vaginal administration of progesterone from midgestation had no significant effect on the incidence of early preterm birth. Such apparent lack of effectiveness of progesterone in twins may be due to inadequate dosage or treatment that is started too late in pregnancy.Objective: The early vaginal progesterone for the prevention of spontaneous preterm birth in twins, a randomized, placebo-controlled, double-blind trial, was designed to test the hypothesis that among women with twin pregnancies, vaginal progesterone at a dose of 600 mg per day from 11 to 14 until 34 weeks' gestation, as compared with placebo, would result in a significant reduction in the incidence of spontaneous preterm birth between 24+0 and 33+6 weeks.Study Design: The trial was conducted at 22 hospitals in England, Spain, Bulgaria, Italy, Belgium, and France. Women were randomly assigned in a 1:1 ratio to receive either progesterone or placebo, and in the random-sequence generation, there was stratification according to the participating center. The primary outcome was spontaneous birth between 24+0 and 33+6 weeks' gestation. Statistical analyses were performed on an intention-to-treat basis. Logistic regression analysis was used to determine the significance of difference in the incidence of spontaneous birth between 24+0 and 33+6 weeks' gestation between the progesterone and placebo groups, adjusting for the effect of participating center, chorionicity, parity, and method of conception. Prespecified tests of treatment interaction effects with chorionicity, parity, method of conception, compliance, and cervical length at recruitment were performed. A post hoc analysis using mixed-effects Cox regression was used for further exploration of the effect of progesterone on preterm birth.Results: We recruited 1194 women between May 2017 and April 2019; 21 withdrew consent and 4 were lost to follow-up, which left 582 in the progesterone group and 587 in the placebo group. Adherence was good, with reported intake of ≥80% of the required number of capsules in 81.4% of the participants. After excluding births before 24 weeks and indicated deliveries before 34 weeks, spontaneous birth between 24+0 and 33+6 weeks occurred in 10.4% (56/541) of participants in the progesterone group and in 8.2% (44/538) in the placebo group (odds ratio in the progesterone group, adjusting for the effect of participating center, chorionicity, parity, and method of conception, 1.35; 95% confidence interval, 0.88-2.05; P=.17). There was no evidence of interaction between the effects of treatment and chorionicity (P=.28), parity (P=.35), method of conception (P=.56), and adherence (P=.34); however, there was weak evidence of an interaction with cervical length (P=.08) suggestive of harm to those with a cervical length of ≥30 mm (odds ratio, 1.61; 95% confidence interval, 1.01-2.59) and potential benefit for those with a cervical length of <30 mm (odds ratio, 0.56; 95% confidence interval, 0.20-1.60). There was no evidence of difference between the 2 treatment groups for stillbirth or neonatal death, neonatal complications, neonatal therapy, and poor fetal growth. In the progesterone group, 1.4% (8/582) of women and 1.9% (22/1164) of fetuses experienced at least 1 serious adverse event; the respective numbers for the placebo group were 1.2% (7/587) and 3.2% (37/1174) (P=.80 and P=.06, respectively). In the post hoc time-to-event analysis, miscarriage or spontaneous preterm birth between randomization and 31+6 weeks' gestation was reduced in the progesterone group relative to the placebo group (hazard ratio, 0.23; 95% confidence interval, 0.08-0.69).Conclusion: In women with twin pregnancies, universal treatment with vaginal progesterone did not reduce the incidence of spontaneous birth between 24+0 and 33+6 weeks' gestation. Post hoc time-to-event analysis led to the suggestion that progesterone may reduce the risk of spontaneous birth before 32 weeks' gestation in women with a cervical length of <30 mm, and it may increase the risk for those with a cervical length of ≥30 mm. [ABSTRACT FROM AUTHOR]- Published
- 2021
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24. [THE VALUE OF COLPOSCOPY EXAMINATION IN DIAGNOSIS OF PRECANCEROUS AND CANCEROUS DISEASES OF THE CERVIX]
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Dimitrov, I., Petya Andreeva, Chaveeva, P., Konovalova, M., and Shterev, A.
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Vaginal Smears ,Colposcopy ,Humans ,Uterine Cervical Neoplasms ,Female ,Cervix Uteri ,Precancerous Conditions ,Papanicolaou Test - Abstract
The aim of this study is to present the value of colposcopy examination in diagnosis of precancerous and cancerous diseases of the cenvix. A retrospective study analyze 127 patients at SA GBAL" Dr. Shterev Hospital" that undenNent, firstly cervical smear test and secondly a colposcopic punch biopsy The patients are divided in two groups--one group of cytologically non-signaled patients with results from the Pap test I-II and one group with cytologically -signaled patients with results from the Pap test III-IV The data shows a correlation between the cytological and histological results of the second group and absence of such a correlation in the first group. In the non-signaled group the mild precancerous lesions to Thvasive cen'ical cancer were left undiagnosed. The conduct of a routine colposcopy during preventive gynecological examination will reduce the deficiencies of the cytological method and by amplifying it, it will lead to better results of the diagnosis and treatment of the precanceroses and the cervical cancer.
25. [Ultrasound Examination and Management of Twin Pregnancy.]
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Chaveeva, P., Dimitrov, I., Yankova, M., Stratieva, V., Dimitrov, T., and Atanas Shterev
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Abortion, Spontaneous ,Pregnancy Complications ,Fetal Growth Retardation ,Fetus ,Reproductive Techniques, Assisted ,Pregnancy ,Risk Factors ,Pregnancy, Twin ,Twins ,Humans ,Female ,Prenatal Care ,Ultrasonography, Prenatal - Abstract
Twin pregnancies are found in about 3 % of all pregnancies and 2/3 are dizygotic and 1/3 are monozygotic. In the last 30 years after the introduction of assisted conception and increasing maternal age the rate of twin pregnancies dramatically increased. Compared to singletons, twins have more complications such as intrauterine demise, intrauterine selective fetal growth reStriction, congenital anomalies, miscarriage and preterm labour. Monochorionic twins are at high risk for unique complications because of blood exchange through vascular communications in the shared placenta. Twin pregnancies should be considered as a high risk pregnancies and the well-being of the two fetuses should be taken into account with a strict protocol for follow up and management options.Ultrasound examination olavs a maior role in fetal surveillance.
26. [LAPAROSCOPIC TREATMENT OF PRIMARY ABDOMINAL PREGNANCY: A CASE REPORT AND REVIEW OF THE LITERATURE]
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Dimitrov, I., Konovalova, M., Chaveeva, P., and Atanas Shterev
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Adult ,Laparotomy ,Pregnancy Trimester, First ,Pregnancy ,Pregnancy, Abdominal ,Humans ,Abdominal Cavity ,Female ,Laparoscopy ,Uterine Hemorrhage - Abstract
Abdominal pregnancies are 1.4% of all ectopic pregnancies. They are mostly complicated and usually managed by laparotomy, but laparoscopy is an alternative method which some surgeons perform instead of laparotomy, especially in early pregnancy. We reported a 29 year old woman with supra pubic pain and vaginal bleeding. After sonographic evaluations, ectopic pregnancy was diagnosed and the patient underwent laparoscopic surgery for termination of pregnancy. Laparoscopy is a successful alternative method of surgery for abdominal pregnancies in first trimester.
27. Prenatal diagnosis and fetoscopic tracheal occlusion (FETO) for severe congenital diaphragmatic hernia. Case report
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Chaveeva, P., Stratieva, V., Persica, N., and Atanas Shterev
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Adult ,Fetal Diseases ,Pregnancy ,Fetoscopy ,Humans ,Female ,Hernias, Diaphragmatic, Congenital ,Ultrasonography, Prenatal - Abstract
We present a case of severe isolated congenital diaphragmatic hernia (CDH) diagnosed at 19 weeks of gestation and treated at 28 weeks with Fetal Endoscopic Tracheal Occlusion (FETO). The CDH was left-sided with part of the liver in the thorax and lung area to head circumference ratio (LHR) of 0.9. The FETO was successfully performed under spinal anesthesia. The pregnancy is progressing uneventfully and ultrasound examination 10 days after the FETO demonstrated an increased LHR to 1.1. Treatment with FETO for severe CDH has been performed for the first time in Bulgaria and this procedure addressed several questions for optimal management by an experienced interdisciplinary team.
28. [Prenatal diagnosis and treatment of twin-to-twin transfusion syndrome]
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Chaveeva, P., Petya Andreeva, and Shterev, A.
- Subjects
Laser Coagulation ,Pregnancy ,Prenatal Diagnosis ,Pregnancy, Twin ,Humans ,Female ,Fetofetal Transfusion - Abstract
Monochorionic twins originate of single placenta serving two twins, which potentionally could lead to unique complications including twin-to-twin transfusion syndrome, twin anemia--polycythemia sequence (TAPS), selective intrauterine growth restriction or twin reversed arterial perfusion sequence (TRAP). A shared placenta and fetoplacental circulation are responsible for significant discordance in amniotic fluid, fetoplacental hemodynamics, fetal size or fetal structural defects. All these complications pose high risk of fetal demise in one of the twins and therefore this could trigger death or neurological injury of the co-twin. The most severe complication of the monochorionic placenation is twin-to-twin transfusion syndrome.Prenatal management of complicated monochorionic twin pregnancy with twin-to-twin transfusion syndrome exposed to the risk of losing one or two twins in utero justifies the endoscopic laser coagulation for placental anastomoses as a first line treatment.
29. Numerical and structural genomic aberrations in spontaneous abortions, detected by array CGH analysis
- Author
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Belemezova, K., Rizov, M., Hristova-Savova, M., Nikolova, E., Timeva, T., Milachich, T., Yunakova, M., Petya Andreeva, Chaveeva, P., Shterev, A., Djonov, V., Dimova, I., Petya Andreeva, Ivanka Dimova, and TANYA Nikolova TIMEVA
30. Association of uterine fibroids with perinatal outcomes: a multicenter cohort study.
- Author
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Impis Oglou M, Chaveeva P, De Paco Matallana C, Del Mar Gil Mira M, Siargkas A, Puig I, Delgado JL, Kalev V, Gonzalez-Gea L, Fernandez-Buhigas I, Tsakiridis I, and Dagklis T
- Published
- 2024
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- View/download PDF
31. Risk Factors of Velamentous Cord Insertion in Singleton Pregnancies-A Systematic Review and Meta-Analysis.
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Siargkas A, Tsakiridis I, Gatsis A, De Paco Matallana C, Gil MM, Chaveeva P, and Dagklis T
- Abstract
Objective: This meta-analysis aims to quantitatively summarize current data on various potential risk factors of velamentous cord insertion (VCI). A better understanding of these risk factors could enhance prenatal identification both in settings with routine screening and in those where universal screening for cord insertion anomalies is not yet recommended. Methods: A systematic search was conducted in MEDLINE, Cochrane Library, and Scopus from their inception until 7 February 2024. Eligible studies included observational studies of singleton pregnancies with VCI, identified either prenatally or postnatally, compared with pregnancies with central or eccentric cord insertion. Analyses were performed using DerSimonian and Laird random-effects models, with outcomes reported as risk ratios (RR) or mean differences with 95% confidence intervals (CI). Results: In total, 14 cohort and 4 case-control studies were included, reporting on 952,163 singleton pregnancies. Based on the cohort studies, the overall prevalence of VCI among singleton pregnancies was calculated to be 1.54%. The risk of VCI was significantly higher among pregnancies conceived using assisted reproductive technology (RR, 2.32; 95% CI: 1.77-3.05), nulliparous women (RR, 1.21; 95% CI: 1.15-1.28), women who smoked (RR, 1.14; 95% CI: 1.08-1.19), and pregnancies diagnosed with placenta previa (RR, 3.60; 95% CI: 3.04-4.28). Conclusions: This meta-analysis identified assisted reproductive technology, nulliparity, smoking, and placenta previa as significant risk factors of VCI among singleton pregnancies. These findings could inform screening policies in settings where universal screening for cord insertion is not routinely performed, suggesting a targeted approach for women with these specific risk factors.
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- 2024
- Full Text
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32. Management of preterm labor: Clinical practice guideline and recommendation by the WAPM-World Association of Perinatal Medicine and the PMF-Perinatal Medicine Foundation.
- Author
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Dagklis T, Akolekar R, Villalain C, Tsakiridis I, Kesrouani A, Tekay A, Plasencia W, Wellmann S, Kusuda S, Jekova N, Prefumo F, Volpe N, Chaveeva P, Allegaert K, Khalil A, and Sen C
- Subjects
- Infant, Newborn, Female, Pregnancy, Humans, Magnesium Sulfate therapeutic use, Premature Birth, Obstetric Labor, Premature diagnosis, Obstetric Labor, Premature prevention & control, Tocolytic Agents therapeutic use
- Abstract
This practice guideline follows the mission of the World Association of Perinatal Medicine in collaboration with the Perinatal Medicine Foundation, bringing together groups and individuals throughout the world, with the goal of improving the management of preterm labor. In fact, this document provides further guidance for healthcare practitioners on the appropriate use of examinations with the aim to improve the accuracy in diagnosing preterm labor and allow timely and appropriate administration of tocolytics, antenatal corticosteroids and magnesium sulphate and avoid unnecessary or excessive interventions. Therefore, it is not intended to establish a legal standard of care. This document is based on consensus among perinatal experts throughout the world in the light of scientific literature and serves as a guideline for use in clinical practice., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2023 Elsevier B.V. All rights reserved.)
- Published
- 2023
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33. Concordance between US and MRI Two-Dimensional Measurement and Volumetric Segmentation in Fetal Ventriculomegaly.
- Author
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Hadjidekov G, Haynatzki G, Chaveeva P, Nikolov M, Masselli G, and Rossi A
- Abstract
We provide a study comparison between two-dimensional measurement and volumetric (3D) segmentation of the lateral ventricles and brain structures in fetuses with isolated and non-isolated ventriculomegaly with 3D virtual organ computer-aided analysis (VOCAL) ultrasonography vs. magnetic resonance imaging (MRI) analyzed with 3D-Slicer software. In this cross-sectional study, 40 fetuses between 20 and 38 gestational weeks with various degrees of ventriculomegaly were included. A total of 71 ventricles were measured with ultrasound (US) and with MRI. A total of 64 sonographic ventricular volumes, 80 ventricular and 40 fetal brain MR volumes were segmented and analyzed using both imaging modalities by three observers. Sizes and volumes of the ventricles and brain parenchyma were independently analyzed by two radiologists, and interobserver correlation of the results with 3D fetal ultrasound data was performed. The semiautomated rotational multiplanar 3D VOCAL technique was performed for ultrasound volumetric measurements. Results were compared to manually extracted ventricular and total brain volumes in 3D-Slicer. Segmentation of fetal brain structures (cerebral and cerebellar hemispheres, brainstem, ventricles) performed independently by two radiologists showed high interobserver agreement. An excellent agreement between VOCAL and MRI volumetric and two-dimensional measurements was established, taking into account the intraclass correlation coefficients (ICC), and a Bland-Altman plot was established. US and MRI are valuable tools for performing fetal brain and ventricular volumetry for clinical prognosis and patient counseling. Our datasets could provide the backbone for further construction of quantitative normative trajectories of fetal intracranial structures and support earlier detection of abnormal brain development and ventriculomegaly, its timing and progression during gestation.
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- 2023
- Full Text
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34. First trimester examination of fetal anatomy: clinical practice guideline by the World Association of Perinatal Medicine (WAPM) and the Perinatal Medicine Foundation (PMF).
- Author
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Volpe N, Sen C, Turan S, Sepulveda W, Khalil A, Rolnik DL, De Robertis V, Volpe P, Gil MM, Chaveeva P, Dagklis T, Pooh R, Kosinski P, Cruz J, Huertas E, D' Antonio F, Rodriguez Calvo J, and Daneva Markova A
- Subjects
- Female, Humans, Pregnancy, Pregnancy Trimester, First, Fetus, Ultrasonography, Prenatal
- Abstract
This recommendation document follows the mission of the World Association of Perinatal Medicine in collaboration with the Perinatal Medicine Foundation. We aim to bring together groups and individuals throughout the world for precise standardization to implement the ultrasound evaluation of the fetus in the first trimester of pregnancy and improve the early detection of anomalies and the clinical management of the pregnancy. The aim is to present a document that includes statements and recommendations on the standard evaluation of the fetal anatomy in the first trimester, based on quality evidence in the peer-reviewed literature as well as the experience of perinatal experts around the world., (© 2022 Walter de Gruyter GmbH, Berlin/Boston.)
- Published
- 2022
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35. Autoimmune Polyglandular Syndrome Type 2 and Pregnancy.
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Yanachkova V, Chaveeva P, Staynova R, and Milcheva R
- Subjects
- Acute Disease, Addison Disease blood, Addison Disease complications, Adult, Blood Glucose metabolism, Cesarean Section, Disease Management, Electrocardiography, Female, Fertilization in Vitro, Fludrocortisone therapeutic use, Hashimoto Disease blood, Hashimoto Disease complications, Hormone Replacement Therapy, Humans, Hypogonadism complications, Polyendocrinopathies, Autoimmune blood, Prednisolone therapeutic use, Pregnancy, Pregnancy Complications blood, Thyrotropin blood, Thyroxine blood, Thyroxine therapeutic use, Water-Electrolyte Imbalance etiology, Water-Electrolyte Imbalance therapy, Addison Disease drug therapy, Glucocorticoids therapeutic use, Hashimoto Disease drug therapy, Hypogonadism blood, Mineralocorticoids therapeutic use, Polyendocrinopathies, Autoimmune drug therapy, Pregnancy Complications drug therapy
- Abstract
Autoimmune polyglandular syndromes are combinations of various endocrine and nonendocrine autoimmune diseases, as well as the presence of elevated organ-specific antibody titers. We present a clinical case of a 41-year-old pregnant patient with type 2 autoimmune polyglandular syndrome, combining Addison's disease, Hashimoto's thyroiditis and hypogonadism. The pregnancy was achieved after the use of assisted reproductive technology. During the pregnancy the patient was strictly monitored. Glucocorticoid and mineralocor-ticoid replacement therapy was adjusted according to the electrolyte profile and general condition of the patient. Management during pregnancy was difficult due to fluctuations in electrolyte levels, thyroid hormones and orthostatic manifestations. Prior to delivery adrenal crisis occurred, but the condition was successfully managed. No complications were reported for the mother and the newborn., (This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)
- Published
- 2020
- Full Text
- View/download PDF
36. [FETAL THERAPY: INTRAUTERINE THORACO-AMNIOTIC SHUNTING IN MACROCYSTIC TYPE CYSTIC ADENOMATOID MALFORMATION OF THE LUNG: REVIEW OF THE LITERATURE AND CASE REPORT].
- Author
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Chaveeva P, Stratieva V, Shivachev H, Aktash S, Panova M, and Shterev A
- Subjects
- Cesarean Section, Female, Humans, Infant, Newborn, Pregnancy, Ultrasonography, Prenatal, Cystic Adenomatoid Malformation of Lung, Congenital diagnosis, Cystic Adenomatoid Malformation of Lung, Congenital therapy, Fetal Therapies methods, Lung abnormalities
- Abstract
Abstract Objective: To present a case of macrocystic type cystic adenomatoid malformation of the lung (CCAM) treated with thoraco-amniotic shunt and to review the published data to evaluate the efficiency of thoraco-amniotic shunts for drainage of (CCAM)., Materials and Methods: This wass case reported of a fetus with a large thoracic cyst, major mediastinal shift and polyhidramnion treated with thoraco-amniotic shunting. We identified 8 cases diagnosed with CCAM and only one case met the criteria for fetal surgery. Thoracoamniotic shunting was successfully performed under local anesthesia and ultrasound control with operating time of 35 minutes. Medline was searched to identify cases of CCAM treated by thoraco-amniotic shunting., Results: Fetal therapy forlung lesion was successfully performed at 30 weeks of gestation with CCAM volume ratio > 1.6 January, 2015 and amniodrenage after the procedure was carried out. The pregnancy has progressed uneventfully and planned Cesarean section was performed at 38 weeks of gestation. The optimal management of such case was performed for the first time in Bulgaria, which required an experienced interdisciplinary team. The newborn underwent resection of the lesion with no growth or neurodevelopment delay. The literature search identified cases with CCAM treated with thoraco-amniotic shunting between 1987 and 2016 and the the survival rate of non-hydropic fetuses that underwent treatment was 88%., Conclusions: Thoraco-amniotic shunting for macrocystic type CCAM is associated reduced risk of fetal intrauterine death and is also likely to be beneficial for the following major postnatal surgery
- Published
- 2016
37. [Ultrasound Examination and Management of Twin Pregnancy.]
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Chaveeva P, Dimitrov I, Yankova M, Stratieva V, Dimitrov T, and Shterev A
- Subjects
- Abortion, Spontaneous diagnostic imaging, Female, Fetal Growth Retardation diagnostic imaging, Fetal Growth Retardation etiology, Fetus abnormalities, Fetus diagnostic imaging, Humans, Pregnancy, Prenatal Care methods, Reproductive Techniques, Assisted, Risk Factors, Twins, Pregnancy Complications diagnostic imaging, Pregnancy Complications etiology, Pregnancy, Twin, Ultrasonography, Prenatal methods
- Abstract
Twin pregnancies are found in about 3 % of all pregnancies and 2/3 are dizygotic and 1/3 are monozygotic. In the last 30 years after the introduction of assisted conception and increasing maternal age the rate of twin pregnancies dramatically increased. Compared to singletons, twins have more complications such as intrauterine demise, intrauterine selective fetal growth reStriction, congenital anomalies, miscarriage and preterm labour. Monochorionic twins are at high risk for unique complications because of blood exchange through vascular communications in the shared placenta. Twin pregnancies should be considered as a high risk pregnancies and the well-being of the two fetuses should be taken into account with a strict protocol for follow up and management options., Conclusion: Ultrasound examination olavs a maior role in fetal surveillance.
- Published
- 2016
38. [LAPAROSCOPIC TREATMENT OF PRIMARY ABDOMINAL PREGNANCY: A CASE REPORT AND REVIEW OF THE LITERATURE].
- Author
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Dimitrov I, Konovalova M, Chaveeva P, and Shterev A
- Subjects
- Abdominal Cavity surgery, Adult, Female, Humans, Laparotomy, Pregnancy, Pregnancy Trimester, First, Pregnancy, Abdominal diagnosis, Uterine Hemorrhage complications, Laparoscopy methods, Pregnancy, Abdominal surgery
- Abstract
Abdominal pregnancies are 1.4% of all ectopic pregnancies. They are mostly complicated and usually managed by laparotomy, but laparoscopy is an alternative method which some surgeons perform instead of laparotomy, especially in early pregnancy. We reported a 29 year old woman with supra pubic pain and vaginal bleeding. After sonographic evaluations, ectopic pregnancy was diagnosed and the patient underwent laparoscopic surgery for termination of pregnancy. Laparoscopy is a successful alternative method of surgery for abdominal pregnancies in first trimester.
- Published
- 2016
39. Endoscopic Placental Laser Coagulation in Dichorionic and Monochorionic Triplet Pregnancies.
- Author
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Peeva G, Chaveeva P, Gil Guevara E, Akolekar R, and Nicolaides KH
- Subjects
- Female, Fetofetal Transfusion diagnostic imaging, Humans, Pregnancy, Pregnancy, Triplet, Pregnancy, Twin, Retrospective Studies, Survival Rate, Treatment Outcome, Fetofetal Transfusion surgery, Fetoscopy, Laser Coagulation
- Abstract
Objective: To report the outcome of monochorionic (MC) and dichorionic (DC) triamniotic (TA) triplet pregnancies treated with endoscopic laser coagulation of the communicating placental vessels for severe feto-fetal transfusion syndrome (FFTS) and selective fetal growth restriction (sFGR)., Methods: Laser surgery was performed at 18 (15-24) weeks' gestation in 11 MCTA and 33 DCTA pregnancies complicated by FFTS and 14 DCTA pregnancies complicated by sFGR. Data from our study and previous reports were pooled using meta-analytic techniques., Results: Survival of at least one baby and survival among all fetuses was 97.0 and 72.7% in DCTA pregnancies with FFTS, 78.6 and 52.4% in DCTA pregnancies with sFGR and 81.8 and 39.4% in MCTA pregnancies with FFTS. In the combined data from our study and previous reports, the pooled survival rates in 132 DCTA pregnancies with FFTS were 94.4 and 76.1%, and in 29 MCTA pregnancies with FFTS, they were 80.6 and 57.5%., Conclusions: Survival after laser surgery is higher in DC triplets with FFTS than in those with sFGR and in DC than in MC triplets with FFTS., (© 2016 S. Karger AG, Basel.)
- Published
- 2016
- Full Text
- View/download PDF
40. [CLINICAL IMPLEMENTATION OF CELL-FREE DNA ANALYSIS IN MATERNAL BLOOD IN SCREENING FOR ANEUPLOIDIES IN SINGLETON PREGNANCIES].
- Author
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Chaveeva P, Yankova M, Stratieva V, Dimitrov I, and Shterev A
- Subjects
- Adult, Aneuploidy, Bulgaria epidemiology, Chromosome Disorders epidemiology, Chromosome Disorders genetics, Chromosomes, Human, Pair 13 genetics, Chromosomes, Human, Pair 18 genetics, DNA genetics, Down Syndrome epidemiology, Down Syndrome genetics, Female, Humans, Middle Aged, Pregnancy, Prenatal Diagnosis, Retrospective Studies, Trisomy genetics, Trisomy 13 Syndrome, Trisomy 18 Syndrome, Young Adult, Chromosome Disorders diagnosis, DNA blood, Down Syndrome diagnosis, Trisomy diagnosis
- Abstract
Objective: Clinical implementation of cell free(cf) DNA testing in maternal blood for aneuploidies in singleton pregnancies., Methods: This is a retrospective study conducted in two centers for fetal medicine in Sofia, Bulgaria, between October 2013 and August 2015. We examined the clinical implementation of cf DNA testing in the routine practice for trisomies 21, 18 and13 after the performance of the first trimester combined test, second trimester biochemical test and/or the combination between first and second trimester integrated test., Results: Cell-free DNA testing was performed in 170 singleton pregnancies with a median maternal age of 35 (range 22-46) years. The primary risk assessment for aneuploidies was derived from 95 cases after the first trimester combined screening test, 39 cases after the second trimester biochemical screening test, 16 cases after the integrated screening test and 20 cases there were no screening test performed. The results from the first line screening test were : 8 pregnancies with risk for trisomy 21 > 1: 100; 23 pregnancies with risk for trisomy 21 from 1:100 to 1: 300; 43 pregnancies with risk for trisomy 21 from 1:300 to 1:1000 and 76 pregnancies with risk for trisomy 21 < 1: 1000. No pregnancies with high risk for T13/T18 were identified. The analysis of cf DNA in the maternal blood reported 3 cases with T21 and no cases with T18 or T13. There was only one case of T21 in the group with risk >1:100 identified by the cf DNA analysis which was also identified by the first trimester combined screening test. The positive results were confirmed with invasive testing: CVS in the first trimester (one case) and Amniocentesis in the second trimester (two cases)., Conclusion: Clinical implementation of cell-free DNA analysis in the contingent policy for screening could improve the detection rate for T21 and could reduce the rate of invasive procedures.
- Published
- 2016
41. [Intrauterine Fetal Growth Restriction- Screening Model. Literature Review.]
- Author
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Stratieva V, Chaveeva P, Yankova M, and Shterev A
- Subjects
- Female, Fetal Growth Retardation blood, Fetal Growth Retardation diagnostic imaging, Fetus diagnostic imaging, Fetus pathology, Gestational Age, Humans, Placenta diagnostic imaging, Placenta pathology, Placenta Growth Factor blood, Pregnancy, Pregnancy, Twin, Ultrasonography, Prenatal, Fetal Growth Retardation diagnosis
- Abstract
Placental dysfunction is involved in a spectrum of obs.tetric conditions including preeclampsia, placental abrution and intrauterine fetal growth restriction. Their timely and accurate recognition is often a chalange since diagnostic criteria are dill based on nonspecific signs and symptomes. Fetal growth restriction (FGR) refers to a fetus that has failed to achieve its genetically determined growth potential and affects up to 5-10% of pregnancies. FRR is associated with an increase in perinatal mortality and morbidity. The diagnoslic challenge is in distinguishing SGA pregnancies from FGR pregnancies because the majority of SGA pregnancies are associated with a good prognosis compared to FGR pregnancies. Multifetal gegations have a high incidence of FGR. About 20-30% of dichorionic twins will suffer from FGR, as will 40% of monochorionic twins. Ultrasound is the benchmark for accurate pregnancy dating and diagnosis of FGR. However, there is room for error and FGR is undetected in about 30% of routinely scanned cases and incorrectly detected in 50% of cases. In recent years, the main priority of the leading obstetric clinics in Europe and the USA is drafting a universal screening model for selecting patients at high risk of developing placental dysfunction. Now, this model is part of the standard screening for chromosomal aneuploidies in the firs and second trimester of pregnancy and prolonged screening in the second and third trimester in patients at high risk.
- Published
- 2016
42. Endoscopic Placental Laser Coagulation in Monochorionic Diamniotic Twins with Type II Selective Fetal Growth Restriction.
- Author
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Peeva G, Bower S, Orosz L, Chaveeva P, Akolekar R, and Nicolaides KH
- Subjects
- Diseases in Twins diagnostic imaging, Diseases in Twins mortality, Female, Fetal Growth Retardation diagnostic imaging, Fetal Growth Retardation mortality, Fetofetal Transfusion diagnostic imaging, Fetofetal Transfusion mortality, Fetoscopy mortality, Humans, Laser Coagulation mortality, Pregnancy, Survival Rate trends, Ultrasonography, Diseases in Twins surgery, Fetal Growth Retardation surgery, Fetofetal Transfusion surgery, Fetoscopy methods, Laser Coagulation methods, Pregnancy, Twin
- Abstract
Objective: To determine predictors of survival in monochorionic diamniotic twins with selective fetal growth restriction type II (sFGR-II), with or without twin-to-twin transfusion syndrome (TTTS), treated by endoscopic placental laser coagulation., Methods: Laser surgery was performed at 20 (15-27) weeks' gestation in 405 cases of sFGR-II with and 142 without coexisting TTTS. Multivariable logistic regression analysis was performed to determine significant predictors of survival to discharge from hospital., Results: There was survival of the small twin in 216 (39.5%) and of the large twin in 379 (69.3%) cases. Significant predictors of survival of both the small and larger twin were ductus venosus Doppler findings in the small twin, gestational age at laser and cervical length, but not the presence of TTTS or Doppler findings in the large twin., Conclusions: In sFGR-II, survival after laser surgery is primarily dependent on the condition of the small twin.
- Published
- 2015
- Full Text
- View/download PDF
43. [THE VALUE OF COLPOSCOPY EXAMINATION IN DIAGNOSIS OF PRECANCEROUS AND CANCEROUS DISEASES OF THE CERVIX].
- Author
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Dimitrov I, Andreeva P, Chaveeva P, Konovalova M, and Shterev A
- Subjects
- Female, Humans, Papanicolaou Test, Precancerous Conditions pathology, Uterine Cervical Neoplasms pathology, Vaginal Smears, Cervix Uteri pathology, Colposcopy methods, Precancerous Conditions diagnosis, Uterine Cervical Neoplasms diagnosis
- Abstract
The aim of this study is to present the value of colposcopy examination in diagnosis of precancerous and cancerous diseases of the cenvix. A retrospective study analyze 127 patients at SA GBAL" Dr. Shterev Hospital" that undenNent, firstly cervical smear test and secondly a colposcopic punch biopsy The patients are divided in two groups--one group of cytologically non-signaled patients with results from the Pap test I-II and one group with cytologically -signaled patients with results from the Pap test III-IV The data shows a correlation between the cytological and histological results of the second group and absence of such a correlation in the first group. In the non-signaled group the mild precancerous lesions to Thvasive cen'ical cancer were left undiagnosed. The conduct of a routine colposcopy during preventive gynecological examination will reduce the deficiencies of the cytological method and by amplifying it, it will lead to better results of the diagnosis and treatment of the precanceroses and the cervical cancer.
- Published
- 2015
44. [SECOND STAGE IN MINIINVASIVE FETAL SURGERY FOR SEVERE CONGENITAL DIAPHRAGMATIC HERNIA. CASE REPORT].
- Author
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Chaveeva P, Persico N, Maslarska R, Georgiev T, Dimova I, and Shterev A
- Subjects
- Female, Fetal Diseases diagnostic imaging, Fetoscopy methods, Hernias, Diaphragmatic, Congenital diagnostic imaging, Humans, Infant, Newborn, Pregnancy, Trachea surgery, Ultrasonography, Prenatal, Fetal Diseases surgery, Hernias, Diaphragmatic, Congenital surgery
- Abstract
We present a case of miniinvasive fetal surgery for CDH treated at 28 and 34 weeks of gestation. The first step was successfully performed at 28 weeks with Fetal Endoscopic Tracheal Occlusion with ballon. The second step was performed at 34 weeks for balloon removal. The necessity of fetal cytogenetic assessment and array CGH was carried out to exclude gene disorders that could lead to poor long-term outcome. A planned SC and optimal neonatology management were followed by a surgical operation of the newborn. Experienced interdisciplinary team successfully provide a perinatal and postnatal surgery for severe CDH. The newborn was discharged from the hospital 3 weeks after the repairing operation in a good condition.
- Published
- 2015
45. [THE GESTATIONAL DIABETES MELLITUS AS A SPECIFIC PREGNANCY STATE].
- Author
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Ianatchkova V, Chaveeva P, and Shterev A
- Subjects
- Carbohydrate Metabolism, Female, Fetal Diseases epidemiology, Fetal Diseases metabolism, Humans, Pregnancy, Risk Factors, Diabetes, Gestational epidemiology, Diabetes, Gestational metabolism
- Abstract
Pregnancy is a condition which result in a significant changes in the course of the metabolic processes in woman's body. The impairments in the carbohydrate metabolism, in particular Gestational Diabetes mellitus are the most frequent observed during pregnancy. Extremely important for the clinician is to knows the risk factors, which can predispose to the appearance of these disorders, and in time to explores the patients. This allows to avoid both early and late complications for the mother and her future child.
- Published
- 2015
46. [New screening method for aneuploidies based on analysis of cell-free DNA in the maternal blood].
- Author
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Chaveeva P, Yankova M, Milachich T, Timeva T, Stratieva V, and Shterev A
- Subjects
- DNA genetics, Down Syndrome blood, Down Syndrome diagnosis, Down Syndrome genetics, Female, Humans, Pregnancy, Trisomy diagnosis, Trisomy genetics, Turner Syndrome blood, Turner Syndrome diagnosis, Turner Syndrome genetics, Aneuploidy, DNA blood, Genetic Testing methods, Prenatal Diagnosis methods
- Abstract
Unlabelled: The national program of screening for aneuploidies in Bulgaria is based on first trimester combined test, second trimester biochemical test and/or the combination between first and second trimester integrated test., Objective: To review the literature for studies analyzing cell-free (cf) DNA in the maternal blood and to report the clinical implementation and validation of the method in the clinical practice. Literature search and study selection extracted studies since 2011 when the first article was published. The data source included searches from PubMed and Medline. The reported results for detection rates (DR) and false positive rates (FPR) in singleton pregnancies were about 99.0% and 0.08% respectively, for trisomy 21, 96.8% and 0.15% for trisomy 18, 92.1% and 0.20% for trisomy 13, 88.6% and 0.12% for monosomy X. For twin pregnancies, the DR was 94.4% and FPR was 0% for trisomy 21., Conclusion: Analysis of cell-free DNA in the maternal blood is an effective method of screening for aneuploidies.
- Published
- 2015
47. [MODELS OF CLINICAL IMPLEMENTATION OF CELL FREE FETAL DNA IN THE MATERNAL SERUM SCREENING TEST-ANALYSIS].
- Author
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Yankova M, Chaveeva P, and Stratieva V
- Subjects
- Chromosomes, Human, Pair 13, Chromosomes, Human, Pair 18, Female, Humans, Infant, Newborn, Maternal Serum Screening Tests economics, Pregnancy, Pregnancy Trimester, First, Pregnancy Trimester, Second, Trisomy 13 Syndrome, Trisomy 18 Syndrome, Chromosome Disorders diagnosis, DNA blood, Down Syndrome diagnosis, Maternal Serum Screening Tests methods, Trisomy diagnosis
- Abstract
Unlabelled: Prenatal screening by definition is a way of identifying pregnancies, with a high enough risk to specific fetal damage as to justify the subsequent invasive diagnosis among the seemingly normal pregnancies. [1] The aim of the prenatal screening test is to reach the high diagnostic frequency (DR > 95%), with low false-positive rate (FPR < 1%). Several non-invasive prenatal tests (NIPT) are widely adopted and use in clinical practice: 1st Trimester Combined screening (First trimester Combined Screening) and 2nd trimester biochemical screening (Second trimester biochemical screening) and in the last few years through screening Fetal DNA in Maternal serum (cfDNA screening). Since the introduction of the sfDNA test were examined and discussed the results of several ways of application: (1) as a primary screening method without preceding the result of 1st trimester combined screening for chromosomal abnormalities, (2) as a contingent test after 1st trimester combined screening in high risk pregnancies (> 1:100) (3) as a contingent test after 1st trimester combined screening, when the calculated risk is between ( 1:10 to 1:2500). The purpose of the study: to compare the results of different ways of application screening through cfDNA: detection rate (DR) for Tri21, Tri18 and Tri13, procentage of invasive diagnostics and cost-effectiveness ratio of cfDNA test in comparison with the 1st trimester combined screening. To establish the most suitable algorithm for application of cfDNA test., Methods and Materials: Analyzed were the results of several randomized multi-center clinical studies whose data are processed through a meta-analysis., Results: cfDNA-test has a higher DR for Tri21 for lower FPR, compared to the combined screening in 1st trimester (cfDNA-DR 99%, 1st trimester screening-DR 96% and 0.4%FPR, respectively FPR 5%), but although it is with better results and reduces the incidence of invasive tests, does not justify the significant difference in price-performance ratio. On the other hand cfDNA-test is with a lower detection rate for Tri 18 or 13 (93-95%), which makes it worse for a primary screening test instead of combined screening in the 1st trimester., Conclusions: The performance of cfDNA-test in terms of the three most common Trisomies: 21,18 and 13 is highest when used after (contingent to) 1st trimester screening and only for patients with an intermediate risk from 1-st trimester screening (risk > 1:10 and 1:2500, around 27% of all pregnancies), as it increases the diagnostic rate of combined screening for Down syndrome (from 90% to 98%), and significantly reduces the percentage of invasive diagnostics (from 3% to 0.7-1%) and that way we are able to achieve optimal result in price-performance result.
- Published
- 2015
48. [Prenatal diagnosis and fetoscopic tracheal occlusion (FETO) for severe congenital diaphragmatic hernia. Case report].
- Author
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Chaveeva P, Stratieva V, Persica N, and Shterev A
- Subjects
- Adult, Female, Fetal Diseases pathology, Hernias, Diaphragmatic, Congenital pathology, Humans, Pregnancy, Ultrasonography, Prenatal, Fetal Diseases diagnosis, Fetal Diseases therapy, Fetoscopy methods, Hernias, Diaphragmatic, Congenital diagnosis, Hernias, Diaphragmatic, Congenital therapy
- Abstract
We present a case of severe isolated congenital diaphragmatic hernia (CDH) diagnosed at 19 weeks of gestation and treated at 28 weeks with Fetal Endoscopic Tracheal Occlusion (FETO). The CDH was left-sided with part of the liver in the thorax and lung area to head circumference ratio (LHR) of 0.9. The FETO was successfully performed under spinal anesthesia. The pregnancy is progressing uneventfully and ultrasound examination 10 days after the FETO demonstrated an increased LHR to 1.1. Treatment with FETO for severe CDH has been performed for the first time in Bulgaria and this procedure addressed several questions for optimal management by an experienced interdisciplinary team.
- Published
- 2015
49. [INTRODUCTION OF ENDOSCOPIC LASER THERAPY FOR COMPLICATED MONOCHORIONIC TWINS IN BULGARIA].
- Author
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Chaveeva P, Stratieva V, and Shterev A
- Subjects
- Bulgaria epidemiology, Delivery, Obstetric, Endoscopy methods, Female, Fetofetal Transfusion complications, Fetofetal Transfusion epidemiology, Humans, Pregnancy, Pregnancy Outcome, Twins, Fetofetal Transfusion surgery, Laser Therapy methods
- Abstract
Objective: The aim of this study is to describe our initial experience of endoscopic laser coagulation of inter-twin placental vessels in the treatment for severe twin-to-twin transfusion syndrome (TTTS) and selective fetal growth restriction (sFGR) at SABBAL "Dr Shterev Hospiat"., Methods: Endoscopic laser surgery was carried out in eight cases of TTTS and two cases of sFGR at a median gestational age of 21.4 (range 16.4-23.1) weeks. In the group of TTTS there was one, three and four cases of Quintero stage 2, 3 and 4, respectively. Both cases of sFGR were Gratacos type 2., Results: In the eight cases of TTTS, there was survival of both twins in four cases (one, two and one of Quintero stages 2, 3 and 4, respectively), survival of one twin in one case (Quintero stage 3) and death of both twins in three cases (all Quintero stage 4). In the sFGR group, both twins survived in one case and one survived in one case. The three cases of TTTS with death of both twins were in the first four cases of the series and the death occurred during or within 24 hours of the procedure where in 2 cases there was SROM with cervical length 7 and 12 mm respectively. In the seven cases with survivors, the median gestational age at delivery was 32.3 (range 28.1-37.0) weeks., Conclusions: Our results from endoscopic surgery in TTTS and sFGR are encouraging and are likely to improve with increasing experience. There was at least one survivor in two of the first four cases and in all six subsequent cases.
- Published
- 2015
50. Optimal method and timing of intrauterine intervention in twin reversed arterial perfusion sequence: case study and meta-analysis.
- Author
-
Chaveeva P, Poon LC, Sotiriadis A, Kosinski P, and Nicolaides KH
- Subjects
- Diseases in Twins mortality, Female, Fetoscopy mortality, Humans, Laser Coagulation methods, Pregnancy, Risk Assessment, Survival Rate, Time Factors, Diseases in Twins surgery, Fetoscopy methods, Pregnancy, Twin, Umbilical Cord surgery
- Abstract
Introduction: The objective of this study was to define the optimal method and timing of intervention in twin reversed arterial perfusion (TRAP) sequence., Material and Methods: During a period of 20 years (1993-2013), we performed endoscopic laser coagulation of umbilical cord vessels or intrafetal laser in 67 pregnancies with TRAP sequence. These data were combined with those reported in the literature to determine the survival rate of the pump twin for different methods and timing of interventions., Results: A variety of techniques were used to interrupt the blood supply to the acardiac twin. Most procedures were performed at or after 16 weeks, and with most methods the survival rate of the pump twin was about 80%. Good results were also obtained for triplet pregnancies. In 18 of 30 cases (60%) diagnosed at 11-14 weeks, there was spontaneous cessation of flow in the acardiac twin before planned intervention at 16-18 weeks, and in 11 of these (61.1%) the pump twin died or suffered brain damage. In 103 pregnancies treated by intrafetal laser at 12-27 weeks, there was no correlation between gestational age at treatment and survival rate, but there was an inverse association between gestational age at treatment and gestational age at birth., Discussion: In TRAP sequence, survival may be improved by elective intervention at 12-14 weeks., (© 2014 S. Karger AG, Basel.)
- Published
- 2014
- Full Text
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