50 year old male CC: Chest pain – Discussion

This is the discussion for 50 year old male CC: Chest pain.

You may recall that the patient started experiencing chest pain during sexual intercourse.

Many of you were appropriately concerned about the possible use of drugs for erectile dysfunction that would contraindicate nitroglycerin! Thanks for pointing that out.

In this case the patient was not taking any medication for erectile dysfunction.

Let’s take another look at the 12-lead ECG.

This ECG shows an essentially regular rhythm with no clearly discernible P-waves and wide QRS complexes (but not > 180 ms) at a rate of about 90.

The morphology of the QRS complexes are somewhat unusual, especially in the right precordial leads. If this is a supraventricular rhythm I would call it a non-specific intraventricular conduction defect or atypical left bundle branch block.

Regardless of what kind of conduction delay is present (even if it’s an accelerated idioventricular rhythm) we know that the depolarization is abnormal. T-wave discordance is present throughout the majority of the 12-lead ECG.

So does anything look like an acute injury pattern? Absolutely!

Let’s take a look at high lateral leads I and aVL.

Here we can see significant ST-elevation that is concordant with (in the same direction as) the majority of the QRS complex. It is also concordant with the terminal (last) wave of the QRS complex.

That’s bad! We have already satisfied one of Sgarbossa’s criteria to identify acute STEMI in the presence of left bundle branch block (LBBB).

Another feature worth pointing out is that leads I and aVL show pathological Q-waves.

Now let’s look at inferior leads III and aVF.

Even taking into account the wandering baseline and artifact we can appreciate concordant J-point depression.

Is this concerning? Yes!

Why?

Because of the ST-elevation in the high lateral leads. In the words of Tomas Garcia, M.D., one must always consider the company an ECG abnormality keeps.

Lead’s III and aVF are reciprocal to leads I and aVL. So the fact that ST-depression (or at least J-point depression) is present in two inferior leads while ST-elevation is present in the high lateral leads is troublesome.

How troublesome?

Troublesome enough for me to call this an acute STEMI.

Now let’s look at the right precordial leads.

Once again we see concordant J-point (and ST-segment) depression in leads V1-V3. Is this concerning? Absolutely! In fact this meets another of Sgarbossa’s criteria.

Finally, we can appreciate ST-elevation in leads V5 and V6 in spite of the wandering baseline there.

I can’t tell you what heart rhythm this patient is in but I feel confident we’re looking at an acute injury pattern.

So what was the outcome?

Unfortunately, this patient experienced cardiac arrest on arrival at the hospital and was not successfully resuscitated (which is more evidence that it was an acute STEMI).

See also:

An unusual case of right bundle branch block

An unusual case of right bundle branch block – Discussion

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EMS 12-Lead

Cardiac Rhythm Analysis, 12-Lead ECG Interpretation, Resuscitation
Comments
“Bad heartburn” – Conclusion | EMS 12 Lead
63 year old male CC: Substernal Chest Pain – Discussion
[…] upright T waves is actually not representative of acute occlusion – for more on this, read this discussion on old versus “new” teaching on recognizing posterior MIs. We do not see ST elevation in aVR or V1 that would suggest a concomitant RV infarct, […]
2014-08-22 16:49:18
Brooks Walsh MD
“Bad heartburn” – 82 y.o. female without chest pain.
Why give atropine at this time?
2014-08-22 15:42:18
Bryan Laviolette
“Bad heartburn” – 82 y.o. female without chest pain.
In addition to the above treatment consensus (ASA, Plavix, judicious NTG, fentanyl, fluid bolus, right sided leads), I would absolutely transport this patient to a PCI centre. Culprit artery is the RCA (STE lead III > II) leading to AV nodal ischemia and junctional bradycardia. In addition to the above treatment I would give 0.5…
2014-08-22 13:14:35
Jared
“Bad heartburn” – 82 y.o. female without chest pain.
Not much to add but my 2 cents...I'd definitely be careful with the nitro, not saying withhold it completely but absolutely use some common sense. I'd have to say probably RCA occlusion, and catch team needs to be activated for a stemi alert immediately. Treat it like a stemi until proven otherwise. If it walks…
2014-08-22 08:49:36
Brooks Walsh MD
“Bad heartburn” – 82 y.o. female without chest pain.
The option was indeed turned on! As for non-CP presentations of ACS, I absolutely believe that these warrant the same level of urgency as the "typical" presentations. Both men and women, young and old, all commonly present without classic chest pain. Besides, how much difference is there between "burning in the epigastrium," and "pain in…
2014-08-21 17:10:37

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