Conjoined Twins Complicating a Dichorionic Triplet Pregnancy after Intracytoplasmic Sperm Injection: A Case Report and Review of the Literature.

Conjoined twins represent a rare type of monoamniotic twins. Ultrasound assessment during the first trimester can facilitate the diagnosis, however further assessment by colour Doppler studies, 3D imaging, fetal echocardiography and fetal magnetic resonance imaging (MRI) is usually required in order to determine the specific fetal abnormalities and to guide appropriate pregnancy management. This case report presents a rare case of conjoined twins complicating a dichorionic-diamniotic triplet pregnancy, achieved after intracytoplasmic sperm injection (ICSI) and blastocyst transfer.

Detection of congenital heart defects throughout pregnancy; impact of first trimester ultrasound screening for cardiac abnormalities.

Objective: To evaluate prospectively the efficacy to screen for congenital heart defects (CHD) during the first trimester nuchal translucency (NT) ultrasound examination by assessing the four chambers' view of fetal heart.

Methods: Pregnancies that were examined prospectively by ultrasound in the first trimester (11th-14th week), the second (19th-24th week) and third trimester were included in the study. 3774 fetuses were examined and fetal heart was assessed during the NT scan by examining the four chambers view.