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Pregnancy of Unknown Location

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Okay, so we've mentioned this term pregnancy

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of unknown location and we're gonna talk about

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what the diagnostic criteria for that are.

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So we used to just say something like,

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there is no intra in pregnancy.

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Ectopic pregnancy cannot be excluded.

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I mean, I can't count the number of times I dictated that,

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but the consensus conference came out with uh, a term

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for this and they called this pregnancy of unknown location

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to kind of go along with the pregnancy

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of uncertain viability we discussed earlier.

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And what is that exactly?

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We can't diagnose a definitive IUP

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and there's no definitive ectopic.

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So we have an empty uterus here.

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We have no secondary signs of ectopic,

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echogenic free fluid blood, extra ovarian,

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a nyl, mass, et cetera.

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So back to our chart here, pregnancy of on the location.

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We talked about looking at the beta HCG level

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and whether it would be safe to treat for ectopic

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or not safe.

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And again, when it's elevated,

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we're putting a yellow light here

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and we're gonna caveat that a little bit.

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As I mentioned before, except for the rare

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heterotopic pregnancy, when you call an intru in pregnancy

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or diagnose an intru pregnancy, as I mentioned,

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you are taking the patient out

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of the wrist pool essentially for an ectopic.

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So when you do this, basically

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what you're saying is they are safe to go home.

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IE they're not gonna go home

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and bleed to death from a ruptured topic.

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So we used to harp very much on the fact that you had

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to be very convinced that

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what you were calling an IUP really was an IUP

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and anything else would basically be dictated

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as can't rule out a topic.

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So what were those things?

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The intertidal sign, which was the least diagnostic,

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followed by the double sid sac, a gestational sac

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with a yolk sac and an embryo.

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And that's why I harped on these earlier

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'cause we wanna make sure we are confidently diagnosing an

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entry in pregnancy because you were now taking the patient

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out of that arm or that risk pool of ectopic.

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So let's go back to this case. How would we interpret this?

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Is this a normal injury to pregnancy?

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Well, I would say no,

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this is not an residual sign.

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Could it be? Maybe,

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but it, it doesn't satisfy their criteria.

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Um, so we used to have a lot of discussion about

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something called the pseudo gestational sac

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of ectopic pregnancy.

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So when an ectopic pregnancy forms the

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endometrium becomes

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desexualized and we learn what that meant.

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That's just a pregnant endometrium.

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And when that happens, you can get kind of little cavities

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and spaces and fluids.

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So you can sometimes

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Get these little, what we called pseudo gestational sacks

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and it could be a fake out.

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And we used to think a lot about that.

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We would decide whether or not to call it

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that or not call it that.

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However, the consensus conference brought in a statement,

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and I'm gonna read the statement

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because it's very important.

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And that is any round

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or oval intrauterine fluid collection

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most likely represents an intrauterine gestational sac

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and should be treated as such.

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It is much less likely

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to represent a pseudo gestational sac of ectopic.

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That's a very, very important statement and very crucial

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because is there a chance of a viable IUP?

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Yes, there's a chance.

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So it is not safe to evacuate the uterus

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and not safe to treat with methotrexate in the setting

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of near normal AED nexa, you know, corpus sodium,

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small amount of free fluid, no, no extra ovarian mass.

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This is how we need to treat a small round fluid collection.

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So again, is this an in injury intrauterine pregnancy?

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It doesn't satisfy our criteria

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and we need to focus on this small round fluid collection.

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So this is the verbiage I actually use to kind of be,

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be safe both from an ectopic standpoint

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and a pregnancy of uncertain viability standpoint.

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So there's an intrauterine sac like structure in the setting

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of a positive pregnancy test.

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Statistically this most likely represents a gestational sac,

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however, it does not satisfy strict criteria

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for an intrauterine pregnancy.

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So we're saying that it's not definitely an IEP.

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So the patient's still at risk for ectopic

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recommend follow up with ultrasound

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and Beta H CG to exclude ectopic.

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This is not the, it's an empty sac follow-up in 14 days case

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of a pregnancy of uncertain viability.

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It we're basically have not diagnosed during pregnancy.

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So we're still keeping ectopic pregnancy on the table.

Report

Faculty

Tony Filly, MD

Chair of Medicine

Community Hospital of the Monterey Peninsula

Tags

Women's Health

Uterus

Ultrasound

Obstetrics

Gynecologic (GYN)

Congenital

Body