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Causes of ST Segment Elevation - Differential Diagnosis Framework

STEMI:
 • Upsloping convex STE: "Pardee's sign" +
Diagnosis Framework ... STEMI: • Upsloping ... morphology similar to LBBB ... #ST #STEMI #Segment ... #ecg #ekg #electrocardiogram
De Winter T Wave ECG Pattern 
STEMI Equivalent - Left anterior descending (LAD) occlusion 

1) Upsloping
ECG Pattern STEMI ... ) Upsloping ST elevation ... precordial leads #DeWinter ... #TWaves #ECG #EKG ... Electrocardiogram #Diagnosis
De Winter T-Waves on EKG
 - Anterior OMI
 - 2% of left anterior descending occlusions
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before or after STEMI ... - look for ST elevation ... - Upsloping ST segment ... Team @FOAMfrat #DeWinter ... #TWaves #EKG #ECG
De Winter T Wave on ECG

Diagnostic Criteria
 - Tall, prominent, symmetric T waves in the precordial
on ECG Diagnostic ... Absence of ST elevation ... elevation (0.5mm ... aVR - “Normal” STEMI ... #TWaves #ECG #EKG
STEMI Equivalents on ECG
 • Conventional STEMI - Elevation of ST segment at (or 40-60 ms
STEMI - Elevation ... with 1-2 mm ST elevation ... criterion 1 - ST elevation ... modified) - ST elevation ... #EKG #diagnosis
Approach to ECGs - Ischemia
MI = Biomarkers + ECG or echo/angiogram findings
Pathologic Q - 1/3 height
new/old infarct STEMI ... • DDx: Acute STEMI ... bigger than QRS - deWinter ... in V1, unless LBBB ... #EKG #diagnosis
ECG changes in Pulmonary Embolism
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Sinus tachycardia 
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Complete or incomplete RBBB 
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or incomplete RBBB ... - Dominant R wave ... Non-specific ST segment ... , including ST elevation ... #Diagnosis
Modified Sgarbossa Criteria for diagnosing STEMI in the presence of a LBBB If there is concordant
STEMI in the presence ... of a LBBB If there ... ST changes (ST segments ... discordant ST elevation ... amplitude of the S wave