8 doctors weighed in:
What is placenta previa?
8 doctors weighed in

Dr. Jeff Livingston
Obstetrics & Gynecology
6 doctors agree
In brief: Placenta over cervix
Placenta previa is a complication of pregnancy where the placenta is covering the opening of the uterus called the cervix.
It occurs in 1/200 pregnancies more commonly in patients with a previous c section. If diagnosed in early pregnancy it may resolve before delivery. If not a c section will be needed. It can cause painless bleeding often requiring bedrest.

In brief: Placenta over cervix
Placenta previa is a complication of pregnancy where the placenta is covering the opening of the uterus called the cervix.
It occurs in 1/200 pregnancies more commonly in patients with a previous c section. If diagnosed in early pregnancy it may resolve before delivery. If not a c section will be needed. It can cause painless bleeding often requiring bedrest.
Dr. Jeff Livingston
Dr. Jeff Livingston
Thank
Dr. William Banks Hinshaw
Obstetrics & Gynecology
2 doctors agree
In brief: Placenta over cervix
The placenta, the interface between mother and fetus, is normally located in the upper uterus.
If it is in the lower uterus and covering or partially the cervix, bleeding is likely to occur when labor starts. Delivery must be by scheduled c-section. Sometimes such placenta can be abnormally attached to the uterus as well as abnormally located, and this can cause additional complications.

In brief: Placenta over cervix
The placenta, the interface between mother and fetus, is normally located in the upper uterus.
If it is in the lower uterus and covering or partially the cervix, bleeding is likely to occur when labor starts. Delivery must be by scheduled c-section. Sometimes such placenta can be abnormally attached to the uterus as well as abnormally located, and this can cause additional complications.
Dr. William Banks Hinshaw
Dr. William Banks Hinshaw
Thank
Dr. Brian Nguyen
Obstetrics & Gynecology
In brief: Abnormal implanting
Previa: Placenta overlies the cervix/birth canal.
Gr 1 means placenta is close, Gr 4 means it's directly overlying/blocking the baby's exit -- high chance of preterm labor & bleeding; you'd need a C/S at 36-37wks. More common in woman w/ hx of C/S & smoking. Not much you can do but wait. If dx'ed early, the uterus still grows/stretches and a placenta can migrate away even in 3rd tri. Follow w/ US.

In brief: Abnormal implanting
Previa: Placenta overlies the cervix/birth canal.
Gr 1 means placenta is close, Gr 4 means it's directly overlying/blocking the baby's exit -- high chance of preterm labor & bleeding; you'd need a C/S at 36-37wks. More common in woman w/ hx of C/S & smoking. Not much you can do but wait. If dx'ed early, the uterus still grows/stretches and a placenta can migrate away even in 3rd tri. Follow w/ US.
Dr. Brian Nguyen
Dr. Brian Nguyen
Thank
Get help from a real doctor now
Dr. Dennis Higginbotham
Board Certified, Obstetrics & Gynecology
26 years in practice
49M people helped
Continue
108,000 doctors available
Read more answers from doctors