Evaluation of The Relationship Between Fetal Lung to Head Ratio and Amniotic Fluid Index in The Third Trimester of Pregnancy
نویسندگان
1 Department of Obstetrics and Gynecology, Maternal-Fetal Neonatal Research Center, Tehran University of Medical Sciences, Valiasr Hospital, Tehran, Iran
2 Department of Obstetrics and Gynecology, Social Determinants of Health, Research Center, School of Medical Sciences, Alborz University of Medical Sciences, Karaj, Iran
3 Maternal, Fetal and Neonatal Research Center, Tehran University of Medical Sciences, Valiasr Hospital, Tehran, Iran
4 Department of Obstetrics and Gynecology, Tehran University of Medical Sciences, Valiasr Hospital, Tehran, Iran
5 Department of Obstetrics and Gynecology, Tehran University of Medical Sciences, Valiasr Hospital, Tehran, Iran
6 Department of Obstetrics and Gynecology, Kermanshah University of Medical Sciences, Emam Reza Hospital, Kermanshah, Iran
7 Department of Obstetrics and Gynecology, Neishabur University of Medical Sciences, Hakim Hospital, Neishabur, Iran
doi
10.30699/jogcr.7.3.144چکیده
Background & Objective: This study assessed the relationship between the ratio of fetal lung volume to head circumference and amniotic fluid index (AFI) in the third trimester of pregnancy.Materials & Methods: This prospective study was performed on low-risk pregnant women in their third trimester of pregnancy. Fetal lung volume was determined separately using the lung-to-head ratio (LHR) for the right and left lungs. Moreover, the AFI was evaluated, and the Pearson correlation coefficient between LHR for both lungs and AFI was investigated.Results: Overall, 112 pregnant women were included in the study. The mean ± standard deviation (SD) of fetal Observed/Expected Right LHR (O/E RLHR) and O/E Left LHR (O/E LLHR) were 113.9±0.36 and 97.13±27.87, respectively. The mean ± SD of AFI was 12.5±4.96 cm. Pearson correlation coefficient did not show a significant relationship between AFI and the left and right LHR (P < /em>>0.05). However, O/E RLHR was significantly correlated with abdominal circumference (P < /em>=0.02, r=0.2), gestational age (P < /em>=0.21, r=0.27), and fetal weight (P < /em><0.001, r=0.27). There was a positive correlation between the number of days the infant was admitted to the neonatal intensive care unit and the volume of the right lung of the fetus (P < /em>=0.03, r=-0.2). No correlation was observed between fetal parameters and the volume of the left lung of the fetus.Conclusion: The results of this study showed that AFI in the third trimester of pregnancy was not significantly correlated with LHR.
