“…Another study observed a significant correlation between an increased myocardial performance index and perinatal mortality, which persisted after adjustment for gestational age 23 . In fetuses of poorly controlled gestational diabetes mellitus, a myocardial performance index of greater than 0.52 had sensitivity of 100% and specificity of 92% for prediction of one of several outcomes, including stillbirth, tachypnea, neonatal intensive care unit admission, and neonatal death 24 . In addition, myocardial performance index elevation was significantly associated with worse perinatal outcomes compared with a normal value, whether the umbilical artery Doppler findings were normal or abnormal 25 .…”