Obstetric Ultrasonography 2
2nd & 3rd trimester USG has its own way of performance. It should include BPD biparital diameter & head circumference (by measuring OFD-occipito Frontal diameter) in addition. Location of placenta with its condition i.e. stages of maturation & position. Foetal abdominal circumference has to be measured at level of adrenal. Vital organs has to be evaluated. Brain & spine has to be given due importance. Amniotic fluid can be assessed by measuring the column of amniotic fluid in all 4 quadrants. Loop of the chord has to be seen. Cosidering all this parameters & confirming about movement of all 4 limbs, & measuring about femur length, gestational period has to be decided. This conclusion has to be matched with LMP (given in h/o) & EDD (expected date of delivery) should be given. Anomaly if present should be discussed with patient or obstetrician & give recommendation.