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EM Clerkship

1st Trimester Vaginal Bleeding

EM Clerkship

Zack Olson, MD ; Mike Estephan, MD ; Maddie Watts, MD

Health & Fitness, Science, Education, Medicine, Life Sciences

4.9816 Ratings

🗓️ 30 April 2017

⏱️ 9 minutes

🧾️ Download transcript

Summary


The pregnancy test is the most important test in females of reproductive age!



Five Important Tests in 1st Trimester Vaginal Bleeding



* CBC* Hemoglobin/Hematocrit* Mild anemia in pregnancy is physiologic and normal* Thrombocytopenia* Type and Screen* Required for blood transfusion* Determines if patient needs RhoGAM* Rho(D) immune globulin* Binds fetal Rh antigens from a fetus so that mother doesn’t develop antibodies against future Rh positive children* Prevents hemolytic disease of the newborn* Give to Rh negative mothers to protect future Rh positive children* Quantitative hCG* hCG >1500* “Cutoff” where definitive pregnancy should be seen on ultrasound* If no pregnancy is seen, highly concerning for ectopic pregnancy* hCG <1500* Ectopic pregnancy still possible* Common for healthy early pregnancies to not be visualized below this level* Urinalysis (UA)* Treat asymptomatic bacteriuria in pregnant patients* One of the only times UTI should be treated in asymptomatic patients* Theoretical increased risk of miscarriage* Pelvic ultrasound* Evaluates for ectopic pregnancy* Subchorionic hemorrhage* Miscarriage



Additional Reading



* Ectopic Pregnancy (EM Clerkship)

Transcript

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0:00.0

Hello, med students. My name is Zach Olson and thank you for downloading this episode of the EM Clerkship Podcast.

0:11.1

Today, we're going to hit a core topic, vaginal bleeding, specifically first trimester vaginal bleeding.

0:20.3

This is common.

0:21.6

You absolutely will see this on your clerkship, quite possibly on your next shift.

0:26.8

And as always, you will look really, really smart if you know exactly what to do when these patients come into the department.

0:37.3

And specifically, what we're going to focus on today is what tests your attending is going to want you to order.

0:44.3

Now with any vaginal bleeding or abdominal pain, or to be honest, any host of symptoms in young females, the most important thing to remember is that

0:57.6

pregnancy test. The point of care pregnancy test is one of your top three most important stat tests

1:05.4

in all of emergency medicine. We get it all the time right away. The other two being EKG and a finger stick blood glucose.

1:12.9

But the urine or blood HCG, that pregnancy test, is right up there with those other two in females of reproductive age.

1:21.2

Think of it as the EKG of young females.

1:23.9

So this patient, let's say, has vaginal bleeding.

1:27.2

Let's say they've been in triage and they had

1:28.8

a pregnancy test, which is positive. You do your initial evaluation, you ask your questions,

1:34.7

and now let's go through the five tests that you are going to order. Step one, recommend a CBC.

1:45.0

Both the hematicrit and the platelets are important here.

1:50.0

You need these with all bleeding patients really, but this one is kind of self-explanatory.

1:55.0

The only thing to add here is that pregnant females do get a physiologic anemia of pregnancy because of increased

2:02.7

plasma volume. Usually no big deal. But again, get a CBC. You're looking at that hematicrit. You're

2:08.3

looking for those platelets. Step two, type and screen. Why? Well, I suppose partially in case you need to give a blood transfusion, but really, this is usually

2:23.3

secondary to the question of whether you need to give Rogam.

2:29.6

This is a pimp question you are going to get.

...

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