Cardiomyopathy Pericarditis Tachycardia 
Dr. Smith's ECG Blog
OCTOBER 23, 2023
An Initial ECG was performed: Initial ECG: Sinus tachycardia with prolonged QT interval (QTc of 534 ms by Bazett). She was admitted to the ICU where subsequent ECGs were performed: ECG at 12 hours QTc prolongation, resolution of T wave alternans ECG at 24 hours Sinus tachycardia with normalized QTc interval. No ischemic ST changes.
Dr. Smith's ECG Blog
FEBRUARY 16, 2020
Here was the ECG: There is sinus tachycardia. Well, don't we see diffuse ST Elevation in Myo-pericarditis (with STD in aVR)? I have summarized the m ajor e tiologic c ategories of acute myocarditis and inflammatory cardiomyopathies. This was sent by a reader. and K was normal. This is "Shark Fin" morphology. Which artery?
Dr. Smith's ECG Blog
NOVEMBER 28, 2022
The ECG shows sinus tachycardia, a narrow, low voltage QRS with alternating amplitudes, no peaked T waves, no QT prolongation, and some minimal ST elevation in II, III, and aVF (without significant reciprocal STD or T wave inversion in aVL). It is difficult to tell if there is collapse during diastole due to the patient’s tachycardia.
Dr. Smith's ECG Blog
OCTOBER 11, 2020
Other than tachycardia, Other than slight tachycardia, vitals were within normal limits (including oxygen saturation). As always, takotsubo cardiomyopathy and focal pericarditis can mimic OMI, but takotsubo almost never mimics posterior MI, and both are diagnoses of exclusion after a negative cath.
Dr. Smith's ECG Blog
JANUARY 21, 2023
The relationship between J wave and ventricular tachycardia during Takotsubo cardiomyopathy. Prominent J waves and ventricular fibrillation caused by myocarditis and pericarditis after BNT162b2 mRNA COVID-19 vaccination. Pacing Clin Electrophysiol 2008 Choi SH, Lee OH, Yoon G-S, et al.
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