Teaching Rounds Day 5

Thrombocytopenia

Hold your breath.

Schistos?
Heparin?

Breathe!

Join us, #medtwitter & #medstudent twitter! Image
Is there an approach to thrombocytopenia?
I don't think so.

There are just way, way to many possibilities to make progress with just this information alone.

How can we make this a less cognitively challenging task?
Study the company that platelets keep... Image
ISOLATED thrombocytopenia is usually a destruction problem.

Only a few bone marrow issues can affect the platelets ALONE without causing problems with other cells lines Image
Splenomegaly (@CPSolvers schema bit.ly/2vHTvf2) starts off with just low platelets, eventually the HgB and the WBC will go down too..
Isolated thrombocytopenia is usually a destruction problem....

What can destroy platelets?

1. Microangiopathic hemolytic anemia
2. Intravascular devices
3. Antibodies
4. Infections

Within these, there are 2 HIGHLY morbid conditions.. Image
Hold your breath....
Schistocytes...?

If you see schistocytes on the smear, your patient has a MAHA, and you have to move quickly.

More here - bit.ly/2uZeMR7

Most patients with a MAHA will have an anemia.

But NOT all of them....bit.ly/2TNe2XA
Heparin...?

Thrombocytopenia + heparin exposure makes us worry about HIT, one of the most hypercoaguable conditions we know!

This is where the 4T score comes in handy!
bit.ly/2PUuYdA
Schistos?
No.

Heparin?
No.

Ok, cool.
Breathe...

Sit back, relax, and let's put our thinking hats on.
Most isolated thrombocytopenia is antibody mediated.

The named antibodies - APLS and HIT - induce a hypercoaguable state.

The others have a propensity for bleeding. Image
Most ITP is primary...

Before you land there, cross check your secondary triggers...

More about ITP from the one and only @Anand_88_Patel here - bit.ly/38pIxbD Image
Alright, let's recap.

1. It's tough to approach thrombocytopenia as a whole.
Study the remainder of the CBC to guide your thinking.

2. Isolated thrombocytopenia is usually a destruction problem.
3. Schistos?
No.
Heparin?
No.
BREATHE!

4. Odds are you'll land on primary ITP; make sure you get there only after exploring secondary triggers
Let's get ready for our next #nerdout session.

We've talked about anemia - bit.ly/2TqR5KV
and now we've explore isolated thrombocytopenia.

What if we have BOTH anemia and thrombocytopenia?
More on this later, but here's a sneak peak.

Rock on, friends.

👊 Image

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But first, a short story.

Breeze
Hop on the ramp
& then whatever you do, DON'T
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Dizziness...

Keeping it simple.

Let's head to the triage room - we have a patient waiting.

You:
Feeling dizzy?
I am sorry!

Do you mind holding still for a few seconds?
How does that feel?
Pt #1: Much better!

You (internal dialogue): Phew. Probably not a stroke.
BBPV vs presyncope?

You: Great!
Does it come back when you move your head?
What about standing up?

Depending on the conversation and exam our toolkit is
1. Vitals
2. Orthostatics
3. Dix-Hallpike
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Pt #2: Not good...it's still there.

You: Ugh. I am sorry.
Let us take a look at your eyes moving.
Aah. We see why you are dizzy (explain nystagmus to patient)
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This is a two part story (#RLR)

Each stands alone but their combination is multiplicative #Synergy #Interdependence

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First step in reasoning, did the hemolysis occur in the patient (in vivo) or during collection of the specimen (in vitro “ex vivo”), eg., prolonged application of tourniquet
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fUnKy Inflammation

Yup.
You are reading this right.

fUnKy Inflammation!
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Who said learning medicine can't quirky and fun?!?

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Wait, what do you mean by inflammation?
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3 Misleading Mimics
&
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Join us #medtwitter & #medstudenttwitter
Diarrhea = increase in stool water content.

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How do we know?

The Bristol Stool Chart!

bit.ly/2TWeVgS
🙏🙏 @Dietitianbytes
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