Clinical significance of prenatally diagnosed persistent left superior vena cava.

AIMS: The aim of our study was to investigate the persistent left superior vena cava (PLSVC) cases diagnosed in the prenatal period in our clinic and to compare the obstetric and genetic outcomes of isolated PLSVC cases with cases accompanied by other cardiac or extracardiac anomalies. METHODS: The cases diagnosed as PLSVC between January 2015 and January 2019 in our perinatology clinic were evaluated retrospectively. Patients were divided into two subgroups as isolated PLSVC and PLSVC accompanied by another anomaly. Furthermore, patients with extra anomalies were divided into three groups which are cardiac anomaly, extracardiac anomaly and those with both. The groups were compared in terms of genetic results and obstetric outcomes. RESULTS: 89 patients were included in our study. Cases with positive pregnancy outcomes were significantly higher in the isolated PLSVC group than with extra anomaly group (p < 0.001). No karyotype anomaly was observed in the isolated group. Pregnancy results were significantly worse (postpartum demise, termination of pregnancy, in utero demise) in with both cardiac and extracardiac anomalies group (p < 0.001). There was no significant difference between the groups in terms of karyotype results (p = 0.535). CONCLUSION: The diagnosis of PLSVC has gained importance and it can be made easier due to the fact that anatomic imaging can be performed in more detail. The isolated PLSVC cases have a very good prognosis. Obstetric outcomes vary according to the accompanying anomaly.

Prenatal diagnosis and postnatal outcomes of right aortic arch anomalies.

PURPOSE: To give a report on the experience of our tertiary perinatology clinic on the pre- and postnatal management of the right aortic arch (RAA) by evaluating the patients as isolated and non-isolated RAA. MATERIALS AND METHODS: Patients referred to our perinatology clinic for fetal echocardiography were evaluated retrospectively. They were assessed in two groups: isolated RAA and non-isolated RAA. The isolated RAA group consisted of patients without any additional cardiac or extracardiac anomalies. According to our routine practice, all patients received detailed prenatal ultrasonography following fetal echocardiography and genetic counseling. RESULTS: A total of 60 patients were evaluated. 38 patients (63.3%) presented with additional cardiac anomalies. 21.7% had extracardiac anomalies, including 16.7% who also had cardiac anomalies. In 2 patients (3.7%) 22q11.2 microdeletion, in 2 patients (3.7%) trisomy 21, in 1 patient (1.9%) trisomy 13 and in 1 patient (1.9%) 20p12.1p11.23 (a deletion of 2880 kbp) were reported. The most common cardiac anomaly associated with RAA was Tetralogy of Fallot (25%). Fetal growth restriction was reported in 8.3% of the cases. 18 patients had isolated RAA. 16 out of the 18 patients had normal genetic analysis. 2 of them (11.11%) presented with a 22q11.2 microdeletion. CONCLUSION: A single-center experience on the diagnosis and management of RAA has been reported in this study. The results indicate that a prenatal cardiac evaluation in 3VV is of utmost importance in all pregnancies to detect RAA and refer these patients to the appropriate perinatology clinics for further evaluation and care.

Evaluation of right side foetal myocardial performance index in pregestational and gestational diabetes mellitus.

The aim of our study is to investigate the myocardial performance index (MPI) of the right side of the foetal heart in pregestational and gestational diabetes mellitus and to compare it with non-diabetic pregnancies. This prospective cross-sectional study was conducted between August 2018 and March 2019 at Kanuni Sultan Suleyman Research and Training Hospital. Women with pregestational or gestational diabetes mellitus at 24-34 weeks of gestation were included in the study and non-diabetic pregnant women were included as the control group. MPI of the right side of the foetal heart were evaluated and compared between the groups. A total of 65 pregestational or gestational diabetic patients and 65 non-diabetic patients were included in the study. Isovolumetric contraction time and isovolumetric relaxation time values were significantly longer in the diabetic group (p < .001). Ejection time values were significantly shorter in the diabetic group (p < .001). MPI values were significantly higher in the diabetic group than the non-diabetic group (p < .001). In conclusion, MPI of the right side of the foetal heart is significantly higher in pregestational and gestational diabetes than in the non-diabetic group.IMPACT STATEMENTWhat is already known on this subject? Gestational diabetes mellitus causes foetal cardiomyopathy and foetal diastolic dysfunction. Myocardial performance index (MPI) is a non-invasive, Doppler-derived myocardial performance assessment that is independent of both heart rate and ventricular anatomy.What do the results of this study add? MPI of the right side of the foetal heart was significantly higher in pregestational and gestational diabetes than in the non-diabetic group. There was no difference in right ventricular MPI between pregestational and gestational groups in diabetic pregnancies, and between insulin using and not insulin using groups.What are the implications of these findings for clinical practice and/or further research? Our study results are promising. MPI of the right side of the foetal heart is significantly higher in pregestational and gestational diabetes than in the non-diabetic group. Prospective cohort studies evaluating serial MPI and evaluating by postpartum foetal echocardiography are needed to evaluate possible adverse effects of diabetes on foetal cardiac functions.

Blake's pouch cyst: Prenatal diagnosis and management.

OBJECTIVE: This study aimed to present the characteristic features of 19 patients who were diagnosed as having Blake's pouch cyst (BPC) at our center. MATERIALS AND METHODS: Nineteen patients diagnosed as BPC between 2015 and 2019 were included in this retrospective study. Follow-up examinations were performed using ultrasonography (US) every three weeks up to 35 weeks of gestation. Prenatal magnetic resonance imaging (MRI) was performed at the time of diagnosis or during follow-up in 13 patients. MRI or transfontanellar US was performed to confirm the diagnosis of BPC after delivery. Karyotype results of eight patients were recorded. RESULTS: Isolated BPC was observed in 9 (47%) patients, and associated anomalies were detected in 10 (53%) patients, including seven (36%) with the central nervous system and four (21%) with cardiac anomalies. Two fetuses had abnormal karyotype analysis as trisomy 21 and 13. The MRI report of eight patients was "differential diagnosis required for Dandy-Walker complex" and only in five (26%) patients, it was reported to be compatible with BPC. Spontaneous resolution was seen in four patients. Postnatal MRI was performed in five patients, and transfontanellar US in two patients, and all MRI and US results were consistent with BPC. During the neonatal period, abnormal neurologic development was observed in four (21%) patients, and one (5%) died. CONCLUSION: Although the prognosis of isolated BPC is very good with healthy neurologic development until advanced ages, death in the early neonatal period and abnormal neurologic development may be observed depending on the condition of the associated anomalies.

Assessment of fetal right ventricular myocardial performance index changes following intrauterine transfusion.

INTRODUCTION: Severe fetal anemia may cause cardiac ischemia, reduced contractility, and dysfunction. The purpose of our study is to evaluate right ventricular myocardial performance index (MPI) before and after intrauterine transfusion (IUT) in patients who underwent this procedure because of fetal anemia due to Rh-D alloimmunization. MATERIALS AND METHODS: This prospective cohort study was conducted between January 2018 and June 2019 at Kanuni Sultan Suleyman Research and Training Hospital, Istanbul, Turkey. The pregnant women who were applied IUT because of fetal anemia due to Rh-D alloimmunization in our perinatology clinic were included in the study. Fetal right ventricular MPI before and 24 h after IUT were evaluated. RESULTS: A total of 28 IUTs were performed in 17 pregnant women during the study period. The isovolumetric contraction time (ICT) and isovolumetric relaxation time (IRT) values measured before IUT, were found to be significantly longer compared to the ICT and IRT values measured after IUT. The MPI values measured after transfusion was found to be higher than before transfusion. CONCLUSIONS: The fetal right ventricular MPI increases 24 h after IUT. This increase in the right ventricular MPI might be used as a marker for predicting adverse fetal outcomes following IUT.

Perinatal outcomes of intrauterine transfusion for foetal anaemia due to red blood cell alloimmunisation.

The aim of this study was to evaluate the maternal and neonatal outcomes of patients who underwent intrauterine transfusion (IUT) for foetal anaemia due to red blood cell alloimmunisation and to determine the factors that affected the outcomes. All pregnancies that were treated with IUT due to Rh immunisation between January 2015 and June 2018 in the Kanuni Sultan Süleyman Training and Research Hospital, Department of Obstetrics and Gynaecology, were evaluated retrospectively. IUT due to non-Rh alloimmunisation, parvovirus B19 infection, chronic fetomaternal haemorrhage and foetal anaemia due to homozygous alpha-thalassemia were not included in the study. The perinatal and neonatal outcomes of the patients were retrospectively analysed. The gestational age, ultrasonography findings before and after IUT, laboratory results, complications related to IUT, and data on the newborns were recorded. The cases were divided into two groups, those with complication and those without complications, and their perinatal outcomes were compared. A total of 110 IUTs were performed in 42 foetuses. The survival rate after transfusion was 80.95%. Procedure-related complications were found in 12.7% of cases. There were no significant differences between the demographic and clinical characteristics of the patients with and without complications. The survival rate was lower and perinatal mortality was higher in foetuses with hydrops fetalis. IUT is a safe and effective procedure that can be used in the treatment of foetal anaemia in experienced centres. Survival rates can be increased by referring patients to experienced perinatology centres, by improving the IUT technique, and by reducing technique-related complications.Impact statementWhat is already known on this subject? The predominant use of IUT is to treat foetal anaemia due to red blood cell alloimmunisation. Despite the decrease after anti-D immune globulin prophylaxis, Rh immunisation is still a major cause of foetal anaemia. However, foetal survival rates have increased with the use of IUT.What do the results of this study add? The survival rates were increased after the development of a high-resolution ultrasound. Because foetal monitoring can be performed by ultrasonography, cord accidents and overload findings can be detected during transfusion, which allows for early interventions and increases survival rates.What are the implications of these findings for clinical practice and/or further research? The IUT procedure can be used in the treatment of foetal anaemia in experienced centres. After the technique was improved, the complication rates related to the procedure were decreased and foetal survival rates were increased. Further studies on the use of different IUT techniques will extend our findings.

Can uterocervical angles successfully predict induction of labor in nulliparous women?

PURPOSE: Induction of labor is a common practice in obstetrics. In recent years, a newer ultrasonographic parameter called the uterocervical angle (UCA) has been identified as a predictive tool for births. Our purpose is to investigate the role of UCA in predicting successful induction of labor. METHODS: The nulliparous term pregnancies (n:150) were grouped into successful/failed inductions of labor based on their progress into the active phase of labor after the administration of prostaglandin E2 (dinoprostone). The pre-induction cervical length (CL) and UCA were compared in the two groups. The study population was further grouped according to their modes of delivery and pre-induction UCAs were compared among the subgroups. RESULTS: The mean UCAs were not significant among the successful induction and failed induction groups (105.46 ±â€¯20.54 degrees in the successful group and 110.57 ±â€¯13.46 degrees in the failed group). However, UCAs significantly varied among the modes of delivery subgroups. The median UCA was significantly higher in patients who delivered vaginally after a successful induction of labor than in patients who delivered via cesarean section. The median UCA value was lowest in patients who had a successful induction of labor but ended up having a cesarean section (Fig. 2). Further, the duration of the active phase of labor negatively correlated with the UCA but not the CL (rho=-0.23, p = 0.02). There was also a negative correlation between the CL and the UCA in patients who delivered vaginally after successful induction of labor (rho= -0.21, p = 0.03). CONCLUSION: The UCA is a promising ultrasonographic marker in obstetrics. Although the pre-induction UCA did not predict the outcome of labor induction, patients with broader pre-induction UCAs were prone to have a shorter duration of active phase. The pre-induction CL and UCA are inversely corraleted in nulliparous women who delivered vaginally after a successful induction of labor.

Aortic arch anomalies detected in foetal life by echocardiography.

Aortic arch anomalies refer to congenital malformations of position or branching pattern of the aortic arch. To-date, only a few small studies have documented prenatal detection of aortic arch anomalies. In this article, we share our experience in detecting aortic arch anomalies. Foetal echocardiograms, clinic and genetic histories of 33 patients who had been diagnosed with aortic arch anomaly from 2007 to 2015 were reviewed. In 15 patients, right aortic arch with mirror image branching; in 13 patients, right aortic arch with left ductus arteriosus and aberrant left subclavian artery; in three patients, left aortic arch with aberrant right subclavian artery; in one patient bilateral ductus and right aortic arch with aberrant left subclavian artery and in one patient double aortic arch were detected. In a patient with isolated right aortic arch, 22q11 microdeletion had been revealed. Given this data, we strongly suggest foetal karyotype analysis when aortic arch anomalies are identified. Impact Statement What is already known on this subject: The data about the prenatal diagnosis of aortic arch anomalies are limited. What the results of this study add: In our study, 653 patients were examined by foetal echocardiography during the study period. Thirty three patients who had been diagnosed with aortic arch anomaly prenatally and confirmed after delivery were enrolled in the study. In 15 patients, right aortic arch with mirror image branching; in 13 patients, right aortic arch with left ductus arteriosus and aberrant left subclavian artery; in three patients, left aortic arch with aberrant right subclavian artery; in one patient bilateral ductus and right aortic arch with aberrant left subclavian artery and in one patient double aortic arch were detected. Trisomy 18 was detected in the patient with bilateral ductus arteriosus and Di George syndrome (22q11 microdeletion) was determined in two patients with right aortic arch. While in the first patient, there were no other intracardiac anomalies; in the second patient with 22q11 microdeletion, Fallot tetralogy accompanied the right aortic arch. What the implications are of these findings for clinical practice and/or further research: This results showed that aortic arch anomalies can be associated with genetic anomalies even when they are found without other congenital heart disease. Given these data, we strongly suggest foetal karyotype analysis and genetic testing when aortic arch anomalies are identified.

The role of shear wave elastography in the assessment of placenta previa-accreta.

OBJECTIVE: To evaluate the value of shear wave elastography (SWE) in the prediction of morbidly adherent placenta. METHODS: Forty-three women with normal placental location and 26 women with anteriorly localized placenta previa were recruited for this case-control study. Placental elasticity values in both the groups were determined by SWE imaging. RESULTS: SWE values were higher in the placenta previa group in all regions than in normal localized placentas (p < .01). However, there was no statistically significant difference between SWE values of placenta previa with and without morbidly adherent placenta (p > .05). CONCLUSIONS: Placental stiffness is significantly higher in placenta previa than normal localized placentas. However, we could not demonstrate any statistically significant difference in the elasticity values between the placenta previa with and without accreta.

Implications of circulating irisin and Fabp4 levels in patients with polycystic ovary syndrome.

The aim of the study was to evaluate the fatty acid-binding protein-4 (FABP4) and irisin concentrations in women with polycystic ovary syndrome (PCOS). Forty-nine women with PCOS, diagnosed according to Rotterdam criteria and 39 healthy women matched for body mass index (BMI) and age. Serum irisin and plasma FABP4 concentrations were measured in both groups. The association of irisin and FABP4 concentrations with metabolic parameters were also tested. Women with PCOS had significantly lower mean serum irisin concentrations than control subjects (158.5 ± 123.3 versus 222.9 ± 152.2 ng/ml, p < 0.05). Concentrations of FABP4 in PCOS and control groups were not significantly different (10.5 ± 4.4 versus 10.9 ± 4.2 ng/ml, p > 0.05). FABP4 concentrations were correlated with BMI, waist-hip ratio (WHR) and HOMA-IR (r = 0.57, p = 0.001; r = 0.26, p = 0.03; r = 0.26, p = 0.03, respectively). No associations between irisin and all the others parameters except serum levels of LH were found. Serum irisin concentrations of women with PCOS were lower compared to the controls. Moreover, there were no difference in plasma FABP4 concentrations between women with PCOS and controls.

Shear wave elastography of the placenta in patients with gestational diabetes mellitus.

To evaluate placental elasticty in women with gestational diabetes mellitus (GDM) and non-diabetic controls. Thirty-three pregnant women with GDM according to the current criteria of the American Diabetes Association and 43 healthy pregnant women who were admitted to the antenatal clinic were recruited for this case-control study. Elasticity values of both the peripheral and the central parts of the placentas of the patients in both groups were determined by shear wave elastography (SWE) imaging. Mean elasticity values of both the central and the peripheral part of the placentas were significantly higher in GDM pregnancies (p < 0.001). No difference was observed in the mean elasticity values of the central and the peripheral part of the placentas in two groups (p > 0.05). SWE imaging technology might provide a quantitative assessment of the morphological pathologies of placentas in pregnant women with GDM.

Homocysteine in embryo culture media as a predictor of pregnancy outcome in assisted reproductive technology.

The aim of this study was to determine whether homocysteine (hcy) concentrations in embryo culture media correlate with pregnancy outcome in assisted reproductive technology (ART) cycles. Forty patients who underwent single embryo transfer at the infertility clinic of a tertiary care center were recruited for this case-control study. Spent embryo culture media from all patients were collected after single embryo transfer on day 3 (n = 40). Hcy concentrations in embryo culture media were analyzed by enzyme cycling method. Patients were grouped according to the diagnosis of a clinical pregnancy. Sixteen patients were pregnant while 24 patients failed to achieve conception. Mean Hcy levels in the culture media were significantly different between the groups (p < 0.003), as 4.58 ± 1.31 µmol/l in the non-pregnant group and 3.37 ± 0.92 µmol/l in the pregnant group. Receiver operator curve analysis for determining the diagnostic potential of Hcy for pregnancy revealed an area under the curve of 0.792 (confidence interval: 0.65-0.94; p < 0.05). A cut-off value of 3.53 µmol/l was determined with a sensitivity of 83.3%, and a specificity of 68.8%. Lower hcy levels were associated with a better chance of pregnancy and better embryo grades. Hcy may be introduced as an individual metabolomic profiling marker for embryos.

Maternal serum atrial natriuretic peptide (ANP) and brain-type natriuretic peptide (BNP) levels in gestational diabetes mellitus.

OBJECTIVE: The aim of the study is to evaluate maternal serum atrial natriuretic peptide (ANP) and brain-type natriuretic peptide (BNP) levels in patients with getational diabetes mellitus compared with a control group. METHODS: We have measured maternal serum ANP and BNP levels in 35 otherwise healthy and 45 gestational diabetic women between gestational week 24 and 28 referred to our unit in a cross-sectional study. Independent samples t-test or the Mann-Whitney U-test was used for comparison of two groups where appropriate. RESULTS: Mean maternal serum homeostasis model assessment of insulin resistance (HOMA-IR), HbA1c, fasting glucose and insulin levels in gestational diabetes mellitus (GDM) group were significantly higher than the control group (p < 0.01). Mean maternal serum ANP and BNP levels of women with GDM were significantly lower than the control group (12.9 ± 9.9 versus 34.8 ± 16.9 pg/ml, p < 0.001; 416.6 ± 209.7 versus 629.7 ± 162.2 mg/dl, p < 0.001, respectively). Maternal serum ANP and BNP levels were negatively correlated with insulin levels, HbA1c and HOMA-IR values (p < 0.05). CONCLUSIONS: Maternal serum ANP and BNP levels are significantly lower in patients with GDM. These biomarkers might be valuable in clinical setting for identifying high-risk women for developing diabetes during pregnancy.

Prenatal diagnosis and outcome of lymphangiomas and its relationship with fetal chromosomal abnormalities.

OBJECTIVES: Our aim was to evaluate ultrasound findings and perinatal outcome after prenatal diagnosis of lymphangioma. METHODS: This was a retrospective case series study. We searched the archives of our ultrasound database at our center for cases with the prenatal diagnosis of the lymphangioma in the period between January 2008 and November 2014. We described maternal, fetal and perinatal variables for all cases. RESULTS: Nine fetuses with lymphangioma were identified. All cases were diagnosed during the second and third trimesters with the average gestational age of 22.6 ± 3.9 weeks. The average diameter of lymphangioma was 55.4 ± 20.1 mm at the time of diagnosis. Five fetuses (55.6%) had lymphangioma on the neck, and four fetuses (44.4%) had lymphangioma on other localizations. Normal fetal karyotype was detected in all cases. There were a total of six live births, one intrauterine death and two medical terminations of pregnancy following the diagnosis of lymphangioma. No abnormal Doppler finding or hydrops were detected in the antenatal follow-up of remaining six cases. CONCLUSION: The risk of chromosomal abnormalities is very low in pregnancies with isolated lymphangioma. The outcome of pregnancies with lymphangioma is generally favorable and prognosis depends on their locations and size.

Shear wave elastography of placenta: in vivo quantitation of placental elasticity in preeclampsia.

PURPOSE: We aimed to evaluate the utility of shear wave elastography (SWE) for assessing the placenta in preeclampsia disease. METHODS: A total of 50 pregnant women in the second or third trimester (23 preeclampsia patients and 27 healthy control subjects) were enrolled in the study. Obstetrical grayscale and Doppler ultrasonography, SWE findings of placenta, and prenatal/postnatal clinical data were analyzed and the best SWE cutoff value which represents the diagnosis of preeclampsia was determined. Sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and diagnostic accuracy of preeclampsia were calculated based on SWE measurements. RESULTS: Mean stiffness values were much higher in preeclamptic placentas in all regions and layers than in normal controls. The most significant difference was observed in the central placental area facing the fetus where the umbilical cord inserts, with a median of 21 kPa (range, 3-71 kPa) for preeclampsia and 4 kPa (range, 1.5-14 kPa) for the control group (P < 0.01). The SWE data showed a moderate correlation with the uterine artery resistivity and pulsatility indices. The cutoff value maximizing the accuracy of diagnosis was 7.35 kPa (area under curve, 0.895; 95% confidence interval, 0.791-0.998); sensitivity, specificity, PPV, NPV, and accuracy were 90%, 86%, 82%, 92%, and 88%, respectively. CONCLUSION: Stiffness of the placenta is significantly higher in patients with preeclampsia. SWE appears to be an assistive diagnostic technique for placenta evaluation in preeclampsia.

No relationship between osteoprotegerin concentrations and endothelial dysfunction in non-obese women with and without polycystic ovary syndrome.

PURPOSE: To investigate the relationships of osteoprotegerin (OPG) concentrations to brachial artery flow-mediated vasodilation (FMD) and the carotid artery intima media thickness (CIMT) in polycystic ovary syndrome (PCOS). METHODS: Thirty-seven women with PCOS and 41 controls matched for body mass index (BMI) and age were included in study. The serum OPG concentrations, hormonal and metabolic profiles were measured in women with PCOS and in control group. The CIMT and brachial artery FMD were evaluated in both groups. RESULTS: The mean serum concentrations of all hormones were comparable, except LH, which was higher in women with PCOS. Lipid parameters were similar between groups. There were no differences between groups with respect to fasting glucose, 2-h glucose, fasting insulin, HbA1c and HOMA-IR. The mean osteoprotogerin concentrations were higher in PCOS group (11.39 ± 2.29 vs. 10.22 ± 2.25 pmol/L, P = 0.026). The mean CIMT was higher in PCOS group than control group (0.52 ± 0.058 vs. 0.45 ± 0.059 mm, P < 0.01). The mean brachial artery FMD was lower in PCOS group (0.068 ± 0.022 vs. 0.055 ± 0.029, P = 0.017). CONCLUSIONS: We found high osteoprotogerin concentrations, increased CIMT and decreased FMD, in women with PCOS. However, there was no correlation between osteoprotegerin and cardiovascular risk markers.

Relationship between first trimester visualization of the intracranial translucency and spina bifida.

PURPOSE: To establish a reference range for the intracranial translucency (IT). METHODS: In this prospective study, we examined 596 singleton fetuses at 11-14 weeks of gestation using transabdominal ultrasonography. The distribution curves of the anterior-posterior diameter of the IT were established according to the gestational weeks, and the percentiles for 11-14 weeks of gestation were calculated. Regression analysis was performed to estimate the relationship between the anterior-posterior diameter of the IT and other fetal biometric parameters. RESULTS: The mean anterior-posterior diameter of the IT was 1.8 ± 0.4 mm. From 11 to 14 weeks of gestation, the IT diameter increased linearly with advancing gestation. The linear regression equation for the IT × crown-rump length (CRL) was IT = CRL × 0.0184 + 0.575 (R = 0.385, p < 0.001). The linear regression equation for the IT × biparietal diameter (BPD) was IT = BPD × 0.0532 + 0.632 (R = 0.346, p < 0.001). The linear regression equation for IT × gestational age (days) (GA) was ICT = GA × 0.024 - 0.339 (R = 0.25, p < 0.001). The linear regression analysis revealed significant correlations of the IT with CRL, BPD, and GA. CONCLUSION: The IT increases linearly with increasing CRL, BPD, gestational age in weeks, and gestational age in days.

Serum endocan concentration in women with pre-eclampsia.

PURPOSE: To investigate serum endocan levels in pregnant subjects with and without pre-eclampsia. METHODS: This cross-sectional study was conducted on 49 pregnant women with pre-eclampsia and 32 healthy pregnant women matched for gestational age. Maternal levels of serum endocan were measured with the use of an enzyme-linked immunosorbent assay kit. RESULTS: Mean endocan levels were not significantly different among groups (10.7 ± 4.5 vs. 10.3 ± 3.2 ng/mL, p 0.763). Mean uterine artery PI and RI were higher in the pre-eclampsia group (p < 0.001, p < 0.001). Mean endocan levels were negatively correlated with BMI at the time of blood sampling (r = -0.247, p = 0.044). There was no correlations between mean endocan levels and all the others parameters. CONCLUSION: These findings suggest that the role of endocan in the pathogenesis of pre-eclampsia was not related to pre-eclampsia; hence, further studies are needed to investigate the role of endocan in the pathogenesis of pre-eclampsia.