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Impairment of physiological mechanisms responsible for maternal cardiovascular adaptation during pregnancy may be associated to intrauterine growth restriction (IUGR). Purpose To compare maternal cardiac parameters between pregnancies with IUGR and with fetal growth appropriate for gestational age (AGA). Methods Twenty-one IUGR (median age 31 years) were compared with 18 AGA matched for age, body size and gestational age (p &amp;gt; 0.35 for all). LV volumes and ejection fraction (LVEF) were measured by 3D echocardiography, and LV mass (LVM) and outflow velocity time integral (VTI) by conventional echocardiography. LV longitudinal strain (GLS) was assessed by speckle-tracking. Results Compared to AGA, IUGR mothers had similar LV volumes and LVEF, but larger LV mass (76 vs 63 g/m2, p = 0.006), LV mass/volume (1.14 vs 1.0 g/ml, p = 0.036) and lower VTI (19.9 vs 21.5 cm, p = 0.046) and GLS (-20 vs -22%, p = 0.032). Maternal LV GLS correlated with fetal growth and utero-placental hemodynamics (Table). At ROC curve analysis, maternal GLS had a good ability to discriminate IUGR from AGA (Figure). Conclusions IUGR had larger LV mass/volume and lower GLS than AGA. GLS was more sensitive than LVEF to detect LV function changes in IUGR. This is the first study reporting that worse maternal LV GLS correlates with fetal growth restriction and suboptimal utero-placental hemodynamics. Rho Spearman p APGAR score 0.36 0.03 Birthweight percentile 0.38 0.02 Biparietal diameter 0.47 0.003 Cranial circumference 0.31 0.07 Abdominal circumference 0.30 0.07 Umbilical vein velocity 0.64 0.003 Uterine artery mean pulsatility index -0.36 0.028 LV length 0.36 0.034 LV mid diameter 0.32 0.05 LV end-systolic volume 0.34 0.046 MAPSE 0.45 0.006 TAPSE 0.41 0.004 Mitral E wave 0.50 0.002 Mitral A wave 0.38 0.02 Correlation of maternal GLS (considered as positive) and fetal parameters. Abstract P205 Figure. GLS ability to discriminate IUGR vs AGA

P205 Maternal left ventricular global longitudinal strain correlates with parameters of fetal intrauterine growth and uteroplacental hemodynamics