The Association between Fetal Renal Artery Doppler Flow with Hourly Urine Output and Amniotic Fluid Volume of Fetuses with a Gestational Age of 30 to 34 Weeks
Background: The present study investigated the association between fetal renal artery Doppler flow, hourly urine output, and amniotic fluid volume in fetuses with a gestational age of 30 to 34 weeks in normal pregnancies. Methods: This cross-sectional study was conducted on 95 eligible pregnant wome...
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Mashhad University of Medical Sciences
2024-10-01
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| Series: | Iranian Journal of Neonatology |
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| Online Access: | https://ijn.mums.ac.ir/article_24653_d514a321381bccf9edea2a004f9039aa.pdf |
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| author | Neda Nikpour Maryam Nurzadeh Narjes Tavakolikia Lida Mohammadpour Mahsa Naemi |
| author_facet | Neda Nikpour Maryam Nurzadeh Narjes Tavakolikia Lida Mohammadpour Mahsa Naemi |
| author_sort | Neda Nikpour |
| collection | DOAJ |
| description | Background: The present study investigated the association between fetal renal artery Doppler flow, hourly urine output, and amniotic fluid volume in fetuses with a gestational age of 30 to 34 weeks in normal pregnancies.
Methods: This cross-sectional study was conducted on 95 eligible pregnant women referred for their routine third-trimester care from March 2022 to March 2023. Each fetus's amniotic fluid volume, kidney size, and hourly urine output were recorded in resistance (RI) and plausibility (PI) indexes of the umbilical and renal arteries. The hourly urine production was calculated by considering bladder volume differences at a 30-minute duration.
Results: With gestational age increasing, amniotic fluid volume (p-value=0.005) and the hourly urine output (p-value=0.005) increased significantly. RI of umbilical (p-value=0.022), right (p-value<0.001), and left (p-value=0.001) renal arteries and PI of right (p-value=0.042) and left (p-value=0.001) renal arteries decreased significantly through the pregnancy. There was a negative linear association between RI and PI of the renal arteries with hourly urine output. The results showed that the mean of renal artery Doppler indices, including right and left RI (0.87 ± 0.08 vs. 0.88 ± 0.07, p-value=0.274) and right and left PI (2.52 ± 0.59 vs. 2.56 ± 0.64, p-value=0.614) was similar in both sides. In adjusted linear regression analysis, two variables of gestational age and renal artery RI were (p-value<0.001) significantly associated with hourly urine output.
Conclusion: The fetus's renal artery Doppler findings and urine outputs seem to represent fetal renal function, warning the physicians about post-natal evaluation after birth. |
| format | Article |
| id | doaj-art-6ef64b662c834866acafeb31f88187e7 |
| institution | Kabale University |
| issn | 2251-7510 2322-2158 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | Mashhad University of Medical Sciences |
| record_format | Article |
| series | Iranian Journal of Neonatology |
| spelling | doaj-art-6ef64b662c834866acafeb31f88187e72025-08-20T03:56:05ZengMashhad University of Medical SciencesIranian Journal of Neonatology2251-75102322-21582024-10-01154495310.22038/ijn.2024.79239.253524653The Association between Fetal Renal Artery Doppler Flow with Hourly Urine Output and Amniotic Fluid Volume of Fetuses with a Gestational Age of 30 to 34 WeeksNeda Nikpour0Maryam Nurzadeh1Narjes Tavakolikia2Lida Mohammadpour3Mahsa Naemi4Department of Obstetrics and Gynecology, Afzalipour Hospital, Afzalipour Faculty of Medicine, Kerman University of Medical Sciences, Kerman, IranDepartment of Fetomaternal, Faculty of Medicine, Shariati Hospital, Tehran University of Medical Sciences, Tehran, IranMedicine Specialist in Preventive and Social Medicine, Head of family health in department of health. Tehran University of Medical Sciences, Tehran, IranDepartment of Fetomaternal, Faculty of Medicine, Shariati Hospital, Tehran University of Medical Sciences, Tehran, IranDepartment of Fetomaternal, Faculty of Medicine, Shariati Hospital, Tehran University of Medical Sciences, Tehran, IranBackground: The present study investigated the association between fetal renal artery Doppler flow, hourly urine output, and amniotic fluid volume in fetuses with a gestational age of 30 to 34 weeks in normal pregnancies. Methods: This cross-sectional study was conducted on 95 eligible pregnant women referred for their routine third-trimester care from March 2022 to March 2023. Each fetus's amniotic fluid volume, kidney size, and hourly urine output were recorded in resistance (RI) and plausibility (PI) indexes of the umbilical and renal arteries. The hourly urine production was calculated by considering bladder volume differences at a 30-minute duration. Results: With gestational age increasing, amniotic fluid volume (p-value=0.005) and the hourly urine output (p-value=0.005) increased significantly. RI of umbilical (p-value=0.022), right (p-value<0.001), and left (p-value=0.001) renal arteries and PI of right (p-value=0.042) and left (p-value=0.001) renal arteries decreased significantly through the pregnancy. There was a negative linear association between RI and PI of the renal arteries with hourly urine output. The results showed that the mean of renal artery Doppler indices, including right and left RI (0.87 ± 0.08 vs. 0.88 ± 0.07, p-value=0.274) and right and left PI (2.52 ± 0.59 vs. 2.56 ± 0.64, p-value=0.614) was similar in both sides. In adjusted linear regression analysis, two variables of gestational age and renal artery RI were (p-value<0.001) significantly associated with hourly urine output. Conclusion: The fetus's renal artery Doppler findings and urine outputs seem to represent fetal renal function, warning the physicians about post-natal evaluation after birth.https://ijn.mums.ac.ir/article_24653_d514a321381bccf9edea2a004f9039aa.pdfdopplerumbilical arteriesultrasonography |
| spellingShingle | Neda Nikpour Maryam Nurzadeh Narjes Tavakolikia Lida Mohammadpour Mahsa Naemi The Association between Fetal Renal Artery Doppler Flow with Hourly Urine Output and Amniotic Fluid Volume of Fetuses with a Gestational Age of 30 to 34 Weeks Iranian Journal of Neonatology doppler umbilical arteries ultrasonography |
| title | The Association between Fetal Renal Artery Doppler Flow with Hourly Urine Output and Amniotic Fluid Volume of Fetuses with a Gestational Age of 30 to 34 Weeks |
| title_full | The Association between Fetal Renal Artery Doppler Flow with Hourly Urine Output and Amniotic Fluid Volume of Fetuses with a Gestational Age of 30 to 34 Weeks |
| title_fullStr | The Association between Fetal Renal Artery Doppler Flow with Hourly Urine Output and Amniotic Fluid Volume of Fetuses with a Gestational Age of 30 to 34 Weeks |
| title_full_unstemmed | The Association between Fetal Renal Artery Doppler Flow with Hourly Urine Output and Amniotic Fluid Volume of Fetuses with a Gestational Age of 30 to 34 Weeks |
| title_short | The Association between Fetal Renal Artery Doppler Flow with Hourly Urine Output and Amniotic Fluid Volume of Fetuses with a Gestational Age of 30 to 34 Weeks |
| title_sort | association between fetal renal artery doppler flow with hourly urine output and amniotic fluid volume of fetuses with a gestational age of 30 to 34 weeks |
| topic | doppler umbilical arteries ultrasonography |
| url | https://ijn.mums.ac.ir/article_24653_d514a321381bccf9edea2a004f9039aa.pdf |
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