Tag Archives: strain pattern

90 year old male CC: "Possible stroke" – Conclusion

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This is the conclusion to 90 year old male CC: "Possible stroke". You might want to go back and familiarize yourself with the details of the case. Let's take another look at the 12-lead ECG. Now with the computerized interpretive algorithm. On Facebook I had asked whether or not this ECG showed signs of ischemia. […]

63 year old male CC: Shortness of breath – Conclusion

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This is the conclusion to 63 year old male CC: Shortness of breath. You may wish to go back and read the original post. Let's take another look at the 12-lead ECG. Now with the computerized interpretation. This ECG shows severe left ventricular hypertrophy with a "strain pattern" or secondary ST-T wave abnormality. A "strain […]

Left ventricular hypertrophy – Part II

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I know I promised to go over the voltage criteria for left ventricular hypertrophy (LVH) but I lied! If you’re really interested you can check out the Wikipedia article HERE, the ECG Learning Center HERE, or Tom Evans’ crib sheet HERE. Personally? I think it’s a distraction. As far as STEMI recognition goes, it misses […]

Left ventricular hypertrophy – Part I

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One of the most confusing ST-elevation mimics for paramedics is the “strain pattern” (or repolarization abnormality) occasionally found with left ventricular hypertrophy. This is important because left ventricular hypertrophy is one of the most common causes of ST segment elevation in chest pain patients. Many 12 lead ECG classes teach paramedics to recognize the voltage […]

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Comments
Stuart
Anterior T wave inversions and PE.
Studies (can't remember them off the top of my head) have shown that TWI in V1-4 + III is 85% likely to be RV strain, 15% ischemia. If I see anterior TWI, the very next lead I look to is III
2014-11-23 18:00:51
Arlene R
The Trouble with Sinus Tachycardia
It has been very insightful for me as i read this post. Thanks to the may people who commented. Like many nurses, I was also taught to differentiate svt from st by rate and now I stand corrected. I have a Telemetry test coming up soon, I wont have the patient in front of me…
2014-11-20 19:59:33
Nick
100 yof CC: Rib pain and intermittent spasms
Can't be a potassium imbalance. The TW's wouldn't change and then change back. If it was coronary spasm, I would expect some ST segment elevation. The TW'S are also not hyperacute (peaked). Does she wear some sort of electronic stimulator?
2014-11-19 01:05:43
Anterior T wave inversions and PE. | EMS 12 Lead
Not just S1Q3T3: Look at the other 10 leads!
[…] Last week, I described the case of a middle-aged male with a vague history of heart failure who had been having progressive shortness of breath for 4-5 days. On the day he called 911, he had been walking a short distance when he syncoped. EMS obtained an ECG: […]
2014-11-18 18:33:47
Christine
100 yof CC: Rib pain and intermittent spasms
I believe this may be coronary artery vasospasm.
2014-11-18 11:02:45

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