62 year old male: Chest Discomfort – Conclusion

This is the conclusion to our three part case series, 62 year old male: Chest Discomfort. Before reading the conclusion, we suggest you check out Part I and Part II. Thanks again to Vince DiGiulio, EMT-CC for this wonderful case!

When we last left off, our patient had experienced a resolution of his chest pain accompanied by changes on his 12-Lead ECG. The ED physician had called cardiology, but they were unimpressed. Are we comfortable with this?

Let’s review our patients’ ¬†first 12-Lead.

Well Page Him Again - Initial 12-Lead

We have a narrow complex, regular rhythm at 90 bpm consistent with a normal sinus rhythm. Flat or downsloping ST segments are visible in leads III and aVF. Additionally, ST-Elevation is present in leads V1 through V4. As some readers pointed out, this is diagnostic for an Anterior Wall Myocardial Infarction. There are also some subtle hints that this is not a normal variant:

  • Dr. Smith included in the comments that the R-wave amplitude of V2-V4 is only 10 mm. In cases of AWMI, a loss of precordial R-wave amplitude is often noted.
  • If you compare the T-waves in V1 and V6, you’ll note that they are much larger in V1 than in V6. Dr. Henry J. L. Marriott describes this finding as a “loss of precordial T-wave balance.” Dr. Mattu covers this in depth in his excellent video New Tall T-Waves in V1.

The most important point is that there is no other explanation for our patient’s ST-Elevation. There is no LVH or BBB present and Early Repolarization is a diagnosis of exclusion in a 62 year old patient.

Regardless, any patient with chest pain should be evaluated with serial ECG’s. During our patient’s second 12-Lead, he happened to be pain free:

Well Page Him Again - Repeat 12-Lead

Our repeat 12-Lead shows a normal sinus rhythm, with the development of terminal T-wave inversions in leads V1-V4. Several of our readers correctly pointed out that these are the hallmarks of the eponymous Wellens’ Syndrome (or Wellens’ Warning). Interestingly enough, the computer’s interpretation now displays *** ACUTE MI ***.

Well Page Him Again - Wellens Syndrome

So what is the importance of this finding?

In 1982, Hein JJ Wellens identified two types of abnormal T-waves associated with critical, proximal LAD stenosis. The first type, not seen in our case, features deeply inverted, symmetric T-waves in the anterior precordial leads. The second type, featured above, are characterized by biphasic T-waves. In his seminal study, Wellens found that these electrocardiographic patterns were most often seen during pain free periods. Subsequent studies showed that nearly every patient with Wellens’ Syndrome had blockage in the LAD, ranging from 50-100%!

So what happened with our patient?

Our patient continued to experience transient episodes of chest pain. His troponin-I levels returned at 1.09 ng/mL 20 minutes after the pain-free ECG. Recognizing Wellens’ Syndrome, the ED physician had the patient transferred directly to the cath lab for immediate PCI.

Key points highlighted by this case:

  • Obtain Serial ECG’s!
  • A single ECG diagnostic for STEMI is indication for cath lab activation.
  • Resolution of chest pain is not a reason to withold aspirin.
  • Wellens’ Sydrome strongly suggests an advanced degree of LAD stenosis and requires urgent evaluation.

References

  • Dr. Smith’s ECG Blog – Wellens’ Syndrome
  • de Zwann C, Bar FW, Wellens HJJ. Characteristic electrocardiographic pattern indicating a critical stenosis high in left anterior descending coronary artery in patients admitted because of impending myocardial infarction. Am Heart J 1982; 103:730-736. [PubMed]
  • Parikh KS, Agarwal R, Mehrota AK, Swamy RS. Wellens syndrome: a life-saving diagnosis. Am J Emerg Med 2012; 30:255e3-255e5. [PubMed]
  • Rhinehardt J, Brady WJ, Perron AD, Mattu A. Electrocardiographic manifestations of Wellens’ syndrome. Am J Emerg Med 2002; 20(7):638-43. [PubMed]

1 Comment

  • At the time of the initial ECG, the artery is occluded and it is an anterior STEMI.  The second one that looks like Wellens' is when the artery has spontaneously opened.  Actually, Wellens' did not have a first diagnostic ECG in any of the cases in his series, he only had the one with the T-wave inversion.  There had not been any ECG recorded at the time of the chest pain and so they never caught the ST elevation, as we see here.

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EMS 12-Lead

Cardiac Rhythm Analysis, 12-Lead ECG Interpretation, Resuscitation

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Comments
iliyas
Masters Case #01: 50 Year Old Male – Severe Chest Pain
Short runs of V.T LAD LAHB Widespread st depression with St elevation in avr Lf msin / three vessle disease Not sure about rhythm
2015-08-26 06:34:44
Darren Earley
Masters Case #01: 50 Year Old Male – Severe Chest Pain
1. L.A.D 2. De Winters (ST Elevation aVR, ST abnormality V2-3). 3. Non sustained VT 4.Poor quality ECG so cannot say about p waves or whether A.fib. Pre alert for ppci = evolving occlusion of LAD artery. Aspirin. Pain relief. Diesel
2015-08-25 17:26:50
michelle
Masters Case #01: 50 Year Old Male – Severe Chest Pain
first pt. sat's are to low at 94% for just room air pt. needs hi-flow o2 at 15 lt. min. i see a-fib. with runs of 3. st depression. there is also a chance of pheumonia. after o2 administer fluids, a chest x-ray, monitor the heart and ekg especially where bp is low.
2015-08-25 16:57:39
Ivan Rios
Understanding Adenosine (Adenocard)
Correct, even for stress test, with the same purpose.
2015-08-18 17:07:24
Joppe
Understanding Adenosine (Adenocard)
Adenosine is also used to measure FFR in the cathlab to achieve maximum vasodilation in the vessels in the Heart.
2015-08-18 16:02:13

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