Background: Pregnancies that extend beyond due date (post-term) are associated with an
increased risk of complications for both the mother and fetus, including morbidity and
mortality. Doppler ultrasound offers a non-invasive way to assess blood flow patterns in the
fetal renal artery, but the current evidence regarding the link between altered renal flow and
oligohydramnios (low amniotic fluid volume) remains inconclusive.
Objectives: To assess the correlation between fetal renal artery Doppler measurements and
amniotic fluid volume indices.
Patients and methods: In a study of 68 post-term pregnant women, two groups were formed.
The first group had oligohydramnios (AFI < 5 cm), while the second group had normal
amniotic fluid capacity (AFI > 5-25 cm). Researchers conducted a thorough history,
sonographic evaluation, clinical examination, and standard laboratory tests. Doppler
examination assessed fetal renal artery characteristics, including blood flow (FRABF),
resistance index (RI), pulsatility index (PI), acceleration time (AT), and systolic/diastolic
ratio (S/D). |
