Name that ECG: 66 year old female – Findings

This is the conclusion to our Name that ECG case: 66 year old female, resolved chest pain.

66 year old female, resolved chest pain.

Name that ECG: 66 year old female

 

Rhythm:

  • Rate: atrial rate of ~55 bpm, ventricular rate of ~55 bpm
  • Regularity: regular
  • P-waves: sinus (upright in I and II), associated 1:1 with the QRS
  • PRi: 140 ms
  • QRS duration: 90 ms

Bonus points:

  • Axis: -45 degrees, left axis deviation, LAFB
  • Bundle Branches: normal conduction
  • QTc: normal (<1/2 R-R interval), 420 ms (Bazett's Formula)
  • ST/T-waves:
    • T-waves: flipped T-waves in aVL, biphasic V2-V5 consistent with Wellen's Syndrome
    • ST-elevation: none noted
    • ST-depression: none noted

Differentials:

  • Normal sinus rhythm in a patient with Wellen's Syndrome
    • Possible high-grade stenosis of the LAD with recent reperfusion

Notes:

  • Wellen's Syndrome should be regarded with the same importance as a STEMI during assessment and transport.

1 Comment

  • VinceD says:

    If you wanted to really push the limits of this ECG I also see inverted inverted U-waves in leads V2-V4, I, and aVL. They're super faint and I wasn't sure if I believed them at first, but measuring from the QRS to the U wave in III and aVF and transposing that interval to the other leads proves that it's really them.

    They don't add any information the T-waves don't tell you here, but heck, they're there.

    And now I'm really being a pain, but I think calling a LAFB is being a little generous to that LAD.  By my eye I put the axis, at most, at around -40 degrees. There's also no well developed rS complexes in II and aVF and the tracing lack the poor R-wave progression I usually see in true LAFB's. There doesn't seem to be an accepted criteria for making the Dx, but this one seems to be pushing it.

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Comments
Shaheedul Islam
The role of 12 lead ECG in Pediatric Pulmonary Hypertension
Precision of discussion is noteworthy. It helped a lot to understand PAH in an ECG. Thanx much Ivan Rios.
2014-12-20 03:17:50
Ivan Rios
The role of 12 lead ECG in Pediatric Pulmonary Hypertension
Thanks for writing Tyler. They are the same thing. Strain pattern is just the result of increased pressures against the ventricles which alters the way repolarization occurs from epicardium to endocardium. Similar to stepping on a puddle of water. Your show spreads the water away from the area of pressure. The ST segment is slightly…
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Tyler
The role of 12 lead ECG in Pediatric Pulmonary Hypertension
Can you explain how these ST segment and T wave changes can be differentiated from right strain pattern?
2014-12-17 18:18:25
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