1st Trimester Vaginal Bleeding
EM Clerkship
Zack Olson, MD ; Mike Estephan, MD ; Maddie Watts, MD
4.9 • 816 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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