Association of Maternal Thyroid Function and Anxiety With Fetal Cardiotocography Parameters in High-Risk Pregnancies

This prospective observational study aims to investigate the association between maternal thyroid function, maternal anxiety levels, and fetal cardiotocography parameters in high-risk pregnancies. Pregnant women at 32 weeks of gestation or later who are followed in the perinatology outpatient clinic for high-risk pregnancy will be included. Maternal thyroid function test results, including thyroid-stimulating hormone (TSH) and free thyroxine (fT4), obtained as part of routine clinical care will be recorded. Maternal anxiety will be assessed using the Beck Anxiety Inventory. Fetal well-being will be evaluated using a routine 20-minute non-stress test (NST), including baseline fetal heart rate, accelerations, reactivity, and the presence of decelerations. The associations between maternal anxiety scores, thyroid hormone levels and thyroid status, and fetal cardiotocography parameters will be analyzed. Sociodemographic and obstetric characteristics will also be evaluated in relation to these parameters.