Special Tutorial Programme Professor Deirdre Murphy Trinity College
Obstetric ultrasound
Objectives First trimester Second trimester Third trimester Early pregnancy complications
Student exercise
Role of ultrasound scans - First trimester 6-12 weeks Second trimester weeks Third trimester weeks
First trimester Intrauterine pregnancy Viability Gestational age / Dating Number of fetuses Chorionicity Down’s screening Uterine abnormalities Pelvic abnormalities
Second trimester (18-20 weeks) Viability Dating Multiple pregnancy Fetal abnormality Liquor Placental site Placental perfusion