Background: A comparison of the systolic and diastolic blood pressure measures is known as the systolic/diastolic ratio or S/D ratio. The quantity of amniotic fluid around the fetus inside the amniotic sac is measured during pregnancy using the Amniotic Fluid Index (AFI).
Objective: To determine the relationship between the Systolic/Diastolic ratio of the umbilical artery, as seen on Doppler ultrasound, and the amniotic fluid index.
Results: Eighty-four percent (142) of the 169 pregnant women had an AFI >8 (normal), sixteen percent (27) had an AFI <8 (abnormal). Twenty-seven percent (46) had an S/D ratio <3 (abnormal) and seventy-twopercent (123)hadan S/D ratio between three and two (normal).In both cases, the correlation coefficient is close to zero (-0.024), suggesting a very weak or negligible linear relationship between Amniotic Fluid Index and Systolic/Diastolic Ratio. Additionally, the p-values are high (.761), indicating that these correlations are not statistically significant. In summary, based on this analysis, there doesn’t seem to be a significant linear relationship between Amniotic Fluid Index and Systolic/Diastolic Ratio.
Conclusion: In conclusion the study conducted at NWGH focused on relation of AFI and Systolic diastolic ratio of umbilical artery. Out of 169 pregnant women 84% had an AFI >8 (normal), 16% had an AFI <8 (abnormal). 27% had an S/D ratio <3 (abnormal) and 72% had an S/D ratio between 3 and 2 (normal). The correlation coefficient is close to zero (-0.024), suggesting a very weak or negligible linear relationship between Amniotic Fluid Index and Systolic/Diastolic Ratio. Additionally, the p-values are high (.761), indicating that these correlations are not statistically significant. In summary, based on this analysis, there doesn’t seem to be a clinically significant linear relationship between Amniotic Fluid Index and Systolic/Diastolic Ratio.
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