Welcome. My name is Divine. This is episode 583 of the Divine Intervention Podcasts.

In today's podcast, we're going to be continuing the series on the Step 1, 312. Again, as I've said, this series is also very useful for people studying for Step 2 and Step 3.

The thing is the lines between Step 1, step two, seeker and step three

are becoming more and more blurred every single year. All right. So we've done questions one to 20.

So let's jump to question 21. So he says a 65 year old woman is brought to the ED because of a 10

minute history of chest tightness and severe pain of her left arm. Physical examination shows jugular venous distension.

Crackles are heard over the long fields.

And ECG shows ST segment elevation greater than 1 millimeter in leads V4 through V6 and new Q waves.

Serum studies show an increased tropon in eye concentration, which of the following labeled points in the graph best represents the changes in cardiac

function that occurred during the first 10 seconds after the onset of chest of pain in this patient?

So clearly this person has an MI.

And then we're given a cardiac function curve.

We see on the y-axis, we have cardiac output.

On the x-axis, we have endastolic volume, right? I just feel like many times people end up making

these things harder than they need to be or sometimes resources make these things harder than

they need to be. But if you notice in this question, this person has an MI.

So just use very simple, straightforward thinking.

If you have an MI, your cardiac muscle is not getting enough oxygen and blood.

So it's not going to be working, right?

It's not going to contract as well.

So your cardiac output should go down.

That's number one.

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