Low thickness at term:- A placental thickness of < 25 mm at term, is associated with Intra Uterine Growth Retardation (IUGR).
More thickness at term:- A placental thickness of > 40mm at term is associated with gestational diabetes, intra uterine infections and hydrops foetalis .
What is the maximum cut off limit of placental thickness in normal preg?? Ans:-Many have defined that at no stage of the pregnancy placental thickness should ideally exceed 40 mm & this may be considered as indicating the cut off value for the upper limit.
What is the correlation of Placental thickness &PNM(Perinatal outcome)? Ans:-The incidence of the perinatal mortality and the foetal anomalies were greater in the subjects with thick placentas and many observers have noted that in the foetuses which weighed <2500 gm.at 36 weeks had e PT was 22 mm only!!! By contrast , when Pl thickness was 34 mm or above at 36 weeks in such cases the foetuses weighed > 2500 gm or above. They, therefore concluded that PT was a predictor of LBW infants and upheld the view that the mean placental thickness at 36 weeks should be around 37.6 mm. But among the pregnant women those who had CMV infections, the placental thickness is usually increased was increased in about 93.3% of the subjects .