ABNORMALITIES OF PLACENTA AND CORD.pptx

ABNORMALITIES OF PLACENTA AND CORD, OBG, HIGH RISK PREGNANCY

1. ABNORMALITIES OF PLACENTA AND CORD By: Ms. Nikita Saliya

2. PLACENTAL ABNORMALITIES PLACENTA SUCCENTURIATA PLACENTA EXTRACHORIALIS Circumvallate placenta Placenta marginata PLACENTA MEMBRANECEA

3. CORD ABNORMALITIES BATTLEDORE PLACENTA VELAMENTOUS PLACENTA ABNORMAL LENGTH Short cord Long cord

4. PLACENTA SUCCENTURIATA One or more small lobes of placenta, size of a cotyledon, may be placed at varying distances from the main placental margin A leash of vessels connecting the main to the small lobe traverse through the membranes

5. Circumvallate placenta The placenta of such type is due to the smaller chorionic plate than the basal plate The chorionic plate does not extend to the placental margin The membranes (amnion and chorion) are folded, rolled back upon itself to form a ring which is reflected centrally

6. Placenta marginata A thin fibrous ring is present at the margin of the chorionic plate where the fetal vessels appear to terminate.

7. PLACENTA MEMBRANECEA The placenta is unduly large and thin. The placenta not only develops from the chorion frondosum but also from the chorion laeve so that the whole of the ovum is practically covered by the placenta

8. CORD ABNORMALITIES BATTLEDORE PLACENTA: : The cord is attached to the margin of the placenta

9. VELAMENTOUS PLACENTA The cord is attached to the membranes The branching vessels traverse between the membranes for a varying distance before they reach and supply the placenta

10. If the leash of blood vessels happens to traverse through the membranes overlying the internal os, in front of the presenting part, the condition is called vasa previa

11. ABNORMAL LENGTH OF CORD SHORT CORD: may be true (less than 20 cm or 8") or commonly relative due to entanglement of the cord round any fetal part.

12. LONG CORD: The cord may be unduly long (300 cm ).

13. Thank you