you're reading...
pregnancy

How does a placenta previa “move” on ultrasound? (With video!)

Placenta previa is a condition where the placenta grows over the cervix or is too close to the cervix. This can lead to catastrophic bleeding for both mother and fetus and requires a c-section for safe delivery.

Placenta previa is often suspected early on in pregnancy when an ultrasound suggests the placenta is very close to the cervix, however, weeks later when the ultrasound is repeated the placenta has moved. This is obviously good news, but how does that physically happen? After all, the placenta has invaded into the uterine wall so it can’t exactly pick up its things and walk up to another spot in the uterus like you would on the beach when you realize your planted your umbrella and towel below the high water mark and have now noticed the tide is coming it!

The answer is the placenta doesn’t move, the lower uterine segment beneath it grows. I made a short video to explain:

 

 

Discussion

3 thoughts on “How does a placenta previa “move” on ultrasound? (With video!)

  1. We used to call this “placental migration,” an obvious misnomer. Good explanation by Dr. JG.

    Posted by David | May 27, 2018, 3:08 pm
  2. I am an old lady, and thought I was fairly knowledgeable about my anatomy, and what happens during pregnancy, but I didn’t know this. Thank you. It’s always good to learn a new thing.

    Posted by Ellie | May 28, 2018, 1:27 pm
  3. Interesting. I’d never thought about it
    Reminds me of this birthmark I have. Back when I was a preschooler, it peeked below my shorts (I hated it and would scratch at it, so i remember). Now it only shows when I’m wearing a bathing suit. My knees are a lot further from my hips than they used to be, but the birthmark isn’t much further in inches from my hip.

    Posted by Demodocus | May 31, 2018, 5:52 am

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

Recent Tweets

%d bloggers like this: