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We aimed at analyzing the relationship between maternal hemodynamics as expressed by Peripheral Vascular Resistance (PVR) at mid gestation and fetal growth at delivery in chronic hypertension. 152 chronic hypertensive patients were submitted to echocardiography noting PVR at 22–24 weeks’ gestation and were followed until delivery noting birthweight centile and the diagnosis of fetal growth restriction (FGR). The logarithmic correlation analysis showed that PVR at mid gestation was strongly related to birthweight at delivery ( r  = –0.72;  p  &lt; .001). Moreover, PVR was predictive of both a birthweight &lt;10th centile (PVR &gt;1466 Sensitivity 75.0%, Specificity 93.4%, AUC 0.83,  p  &lt; .001) and FGR (PVR &gt; 1355 Sensitivity 84.2%, Specificity 93.2%, AUC 0.88,  p  &lt; .001). This study highlights the importance of maternal hemodynamics as expressed by PVR at mid gestation for the identification of chronic hypertensive patients at risk for developing fetal growth restriction. This observation might open new areas of intervention to treat patients with altered hemodynamics (PVR &gt; 1355 dyne s cm −5 ).

Maternal peripheral vascular resistance at mid gestation in chronic hypertension as a predictor of fetal growth restriction