The Relationship of Fetal Lung Elastography Values With the Development of Respiratory Distress in Cases of Preterm Labor

Inclusion Criteria: * 18-45 years old * Single pregnant women who were followed up with a diagnosis of preterm labor between 24-33 weeks and who volunteered and consented to the study * Measured at least 24 hours after antenatal corticosteroid and delivered within a maximum of 72 hours after measurement Exclusion Criteria: * Multiple pregnancies * Amniotic fluid pathologies * Fetal lung and liver diseases * Fetal genetic and structural anomalies * Signs and diagnoses of systemic maternal diseases * Advanced maternal obesity preventing measurement * Patients hospitalized with a diagnosis of preterm labor and discharged before delivery * Presence of comorbid diseases of pregnancy (GDM, hypertensive diseases of pregnancy, PPROM, chorioamnionitis etc.) * Pregnant women over 45 years of age, systemic conditions (history of chronic, mental, physical illness, severe renal, hepatic, gastrointestinal acute/chronic inflammatory disease, hyperthyroidism, hypothyroidism, hypertension, type 1/2 DM, history of malignancy, smoking, alcohol use)