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Objective: The aim of our study was to investigate the relationship between extreme values of first trimester screening markers and adverse obstetric outcomes. Materials and methods: Our study was conducted by examining the prenatal and postnatal perinatal records of 786 singleton gestations between the ages of 18–40, who applied to Prof. Dr. Cemil Taşçıoğlu City Hospital outpatient clinics for first-trimester screening for aneuploidy, between January 1, 2017 and December 31, 2019. Results: The presence of small for gestational age (SGA) was found to be statistically significant for the

Background: Progesterone is essential for maintaining pregnancy. Spiral arteries, providing blood flow to the placenta, undergo changes in early pregnancy, reducing uteroplacental resistance. Our study was aimed at investigating the relationship between the first trimester serum progesterone levels, spiral artery Doppler findings and pregnancy outcome. Methods: This observational retrospective cohort study included 126 pregnant women at 11–14 weeks of gestation, confirmed by last menstrual period and ultrasonography. Between 11–14 weeks, serum progesterone levels were measured and spiral artery pulsatility index (PI), resistive index (RI), peak systolic velocity (PSV) and systolic/diastolic ratio (S/D) values were recorded. Pregnant women were followed up until delivery, and serum progesterone levels and spiral artery Doppler findings were compared between patients with poor perinatal outcomes and others. Results: This study included 126 pregnancies, of which 13 patients were lost to follow-up. Miscarriage occurred in 2 of the pregnant women, stillbirth in 1, intrauterine growth retardation in 10 and preeclampsia in 5 of them. 6 infants developed respiratory problems and 3 infants developed jaundice. Seventeen of the infants were hospitalized in the neonatal intensive care unit. There was no statistically significant difference between serum progesterone, spiral artery PI, RI and S/D values of 86 uncomplicated and 27 complicated pregnant women. Conclusions: It is known that there is a strong relationship between the first trimester serum levels of progesterone, which is an important hormone for the healthy continuation of pregnancy, and the risk of miscarriage. The quantity and quality of placental and fetal circulation is determined by the changes that occur in the spiral arteries with pregnancy. Although a close relationship is known between both variables and pregnancy outcomes, no correlation could be established between them in terms of early detection of poor perinatal outcomes.

Objective: Thyroid hormone is required for normal fetal brain development, neuronal proliferation, migration and structural organization. We aimed to investigate fetal cardiac structure in fetuses of hypothyroid pregnant women receiving thyroid hormone replacement therapy and to compare it with normal pregnancies, including fetal outcome and delivery results. Methods: Singleton pregnant women whose ages were between 18–45 years and weeks of gestation were between 26–34 were included in the study. Their routine laboratory test reports, ultrasonographic measurements (fetal echo) and postnatal follow-up data were recorded. Patients were grouped according to the presence of diagnosis of hypothyroidism. The patients with hypothyroidism during pregnancy were included in Group 1 while healthy pregnancies with similar features were considered as controls and included in Group 2. All women with hypothyroidism were taking thyroid hormone replacement. All ultrasonographic and laboratory data measurements were collected from the system files and were compared between groups. Results: A total of 89 patients (41 hypothyroidism and 48 controls) were recruited to the study. Serum TSH levels of patients with hypothyroidism (Group 1) was significantly higher than the controls. In fetal cardiac examination, left ventricular (LV) and right ventricular (RV) wall thicknesses, and interventricular septum thicknesses at the end of systole and diastole were not statistically significant in both groups. Apgar scores, fetal gender and mean fetal birth weight were all similar between the groups. Conclusion: There is no myocardial structural difference in fetuses of pregnant women who were diagnosed with hypothyroidism and received thyroid hormone replacement therapy compared to healthy controls. Thyroid replacement therapy in hypothyroid mothers might affect and treat fetal cardiac abnormalities.