Friday, August 14, 2015

A young healthy male with epigastric pain and tachycardia

A young previously healthy man with no past medical history presented with a complaint of epigastric pain for a few days.  He had no other complaints.   He appeared well.  Vitals were HR 107, BP 140/70, sats 98%, RR 20, Temp 36.7.

He had a normal exam except for the mild tachycardia.

The physician was planning on discharging the patient except for the tachycardia, which prompted him to obtain an ECG.  He was startled by the result.  He showed it to me:
QRS 105 ms.  Sinus tach.  RV conduction delay (R'-wave in V1)
Diffuse ST depression, diagnostic of ischemia.

Not knowing anything else about the patient, I just said, "This is ischemic ST depression.  He is seriously ill."

He denied any chest pain, shortness of breath, vision changes, numbness, tingling, weakness in upper or lower extremities, neck pain or stiffness, or urinary symptoms.  He had no personal or family cardiac history.   He had no calf pain or swelling, no recent surgery or travel, no history of clot or hemoptysis.  He stated he was working too hard and not drinking enough water.

They did more workup.

He started to complain of a mild sore throat and headache.   A test for group A Strep was positive.  A troponin I returned at 0.454 ng/mL.  Perhaps myocarditis?

Fluids were given for presumed dehydration.

The patient then became very SOB.  He spiked a fever.  He went into respiratory failure.  He was intubated.  Here is his chest X-ray:

Pulmonary Edema without cardiomegaly

A bedside echo was done:



There is hyperdynamic function.  There is no evidence of myocardial dysfunction or decreased contractility.  There is no apparent reason for cardiogenic pulmonary edema.

Here is another view:



There is a finding here that could make the diagnosis if you are looking for it and are good at reading ultrasounds.

It may be seen on this still capture of the video below:








The image captures the aortic outflow tract and you can see a very irregular aortic valve (circled).  Watch the video again.



This was not seen and Doppler was not done (until a much later formal echo).  What is the probable diagnosis?
























The diagnosis was aortic valve endocarditis with severe aortic regurgitation.  Blood cultures were positive for a common organism.

I cannot give more information without compromising patient confidentiality, but no more is needed to make the point.

Learning points:

1.  An ECG can often find serious cardiac pathology when none is suspected.
2.  ST depression is most often due to demand ischemia, less often due to acute coronary syndrome
3.  "Positive" troponins have many etiologies

4.  Most important: A hyperdynamic heart on cardiac echo does not rule out heart failure or cardiogenic shock: acute valvular failure is too often forgotten as the etiology.

See this case.
And this case.

And don't forget tricuspid regurgitation as an etiology of right heart failure.  We have seen two cases of acute tricuspid insufficiency from trauma (sudden compression of heart during systole rupturing chordae to tricuspid).

8 comments:

  1. Just when I start to feel as though I am doing too many focused echos for "minor" complaints, or minimal VS aberrations, a case like this comes along!

    This also supports Rob Arntfield's suggestion that a basic color doppler survey of the valves be a routine element of the focused echo.

    ReplyDelete
    Replies
    1. Yes I just had a patient last night with significant chest pain, no etiology found, but tachycardic. So I did doppler on his aortic and mitral valves because I'm paranoid now!

      Delete
  2. Great case, Dr Smith.

    Could the remarkable ST elevations in leads V1, V2, V3 be labelled as LVH strain patterns (Especially when looking at V3) - in this case caused by the aortic regurgitation ?

    ReplyDelete
    Replies
    1. Thanks for this instructive case.

      First ECG is also reminiscent of proximal LAD lesion at first glance (V1-V3 ST elevation, inferior and V5-6 depression, aVR ST elevation)(also aVL ST elevation makes it more possible than subedocardial ischemia to me), but of course clinical picture matters.

      I also suspect there might be a misplacement of the electrodes (V1 and V2 my be higher but why aVL and V5-6 are so different ? Better to be compared with the case on August 12, 2015).

      Any comment would be highly appreciated.

      Delete
    2. Emre,
      Yes, the ECG could represent proximal LAD, except the echo shows hyperdynamic function, so that hypothesis is thrown out!
      Steve

      Delete
  3. Looking at the fifth and last QRS complex in V2 I notice a clear notch in the following ST segment. Add this finding with the sawtoothed isoelectric line in V4 and V5. This actually make me question sinus rhythm. Can't it rather be atrial tachycardia/atrial flutter with 2:1 conduction rate?

    ReplyDelete
    Replies
    1. Adolfo,
      I don't think so. To me, this is clearly sinus rhythm.
      Steve

      Delete

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