Renal Artery Doppler Findings in the Patients with Polyhydramnios before and after the Conservative Treatment

Abstract

Objective: The aim of this study was to evaluate the foetal renal blood flow with colour Doppler ultrasonography. Patients with polyhydramnios were investigated for the foetal renal artery pulsatility index (PI) at the beginning of the treatment, and after the conservative treatment in those who reached the normal amniotic fluid index. Materials and Methods:In this prospective study, 39 foetuses with polyhydramnios were evaluated at gestational weeks 26 to 36. The foetal development parameters, right and left foetal renal artery PIs, and amniotic fluid index were measured at the beginning of the treatment in all of these patients. Of these patients, 19 who responded to the conservative treatment were also revaluated when their amniotic fluid index reached normal levels, and statistical analyses were performed for the renal artery PIs before and after the treatment.Results: In this study, 19 patients fulfilled the inclusion criteria as patients with polyhydramnios who responded to conservative treatment. For these patients, the mean foetal renal artery PI was 2.08 (range 1.5-3.0) at the first sonographic examination, and the mean foetal renal artery PI was 1.94 (range 1.53-2.69) after the conservative treatment. However, there was no statistically significant difference between these two groups (p=0.117). Conclusion:In this study, no statistically significant difference was found in the foetal renal artery PIs of the patients with polyhydramnios before and after the conservative treatment. These results suggest that the renal artery blood flow may not have any effect on the renal artery PI; therefore, these findings indicate that the renal artery PI cannot be used as a marker in the evaluation of polyhydramnios.Keywords: Doppler ultrasonography, foetal renal artery, polyhydramnios, pulsatility index Özet Amaç: Bu çalışmanın amacı fetal renal arter kan akımını renkli Doppler ultrasonografi ile değerlendirmek olup polihidramniyos saptanan tüm fetuslarda konservatif tedavi öncesinde ve sonrasında fetal renal arter pulsatilite indeksleri ölçüldü. Konservatif tedavi sonrası amniyotik sıvı indeksi normale dönen fetuslarda renal arter pulsatilite indeksi yeniden ölçüldü. Gereç ve Yöntem:Bu prospektif çalışmaya 26-36. gestasyonel haftalar arasında polihidramniyosu olan 39 fetus dahil edildi. Tüm fetusların tedavi öncesinde fetal gelişim parametreleri, sağ ve sol renal arter pulsatilite indeksleri ve amniyotik sıvı indeksi ölçüldü. Bu hastaların 19'u konservatif tedaviye yanıt vermiş olup tedavi sonrası amniyotik sıvı indeksi normale döndü. Bu 19 fetusun renal arter pulsatilite indeksi tedavi öncesi ve sonrasında istatistiksel olarak değerlendiril-miştir.Bulgular: Çalışmaya polihidramniyosu olup konservatif tedavi sonrası tedaviye yanıt veren 19 hasta ile devam edildi. Bu fetuslarda mean fetal renal arter pulsatilite indeksi ilk sonografik incelemede 2,08 (range 1,5-3,0) ölçülmüş olup tedavi sonrasında 1,94 (range 1,53-2,69) olarak saptandı. Ancak bu iki grup arasında istatistiksel olarak anlamlı fark saptanmadı (...

Role of Cerebro Placental Ratio and Renal Artery Doppler Blood Flow in Pregnant Women with Idiopathic oligohydramnios

“…In the current study, resistance index (RI) and pulsatility index (PI) of renal artery is significantly higher in cases with isolated oligohydramnios compared to pregnant women with normal amount of amniotic fluid. The results of the current study were in accordance with the findings in the study of the studies done previously by Akdogan et al, [18]; Akin et al, [16] in which the Fetal renal artery pulsatility index (PI) ratio was greater than normal in oligohydramnios subjects and was statistically significant (p < 0.05). And Scottet al, [19] noted that renal artery pulsatility index ratios were greater than the standard amnion volume group in research conducted at 20 and 36 weeks of pregnancy in gestated women with oligohydramnios.…”

Comparative evaluation of fetal renal artery hemodynamics in normohydramnios, idiopathic oligohydramnios and polyhydramnios in third trimester pregnancy

“…One of the studies demonstrated significant reduction in fetal RA RI and PI values in idiopathic polyhydramnios fetuses when compared to normohydramnios fetuses [24]. Akdogen et al evaluated fetal RA blood flow in polyhydramnios patients prior and after intervention showing a mild decrease in PI after intervention without any significant difference, which may be attributed to increased gestational age [26].…”

“…Akdogen et al. evaluated fetal RA blood flow in polyhydramnios patients prior and after intervention showing a mild decrease in PI after intervention without any significant difference, which may be attributed to increased gestational age [26].…”