The antenatal increase of afterload caused by a high placental vascular resistance was associated with a decrease of aortic distensibility in the compromised small for gestational age infants, suggesting that the structure of the aortic wall was altered. In the most profoundly compromised small for gestational age infants, the high stiffness index of both the common carotid artery and abdominal aorta may indicate more extensive arterial damage.

Twins conceived through ART are not at an increased risk of perinatal complications. A relationship has been found between abnormal UCI and IUGR.

Decreased FXII activity may causally relate to reproductive failure.

No abstract

The low pulsatility waveform may indicate depressed myocardial function. Measuring the DPW provides a simple method for obtaining important information about fetal cardiac performance.