10 results
Differential Diagnosis for ST Segment Elevations
 - ACUTE STEMI 
 - PULMONARY EMBOLISM 
 - LBBB
Differential Diagnosis ... for ST Segment ... Elevations - ACUTE ... STEMI - PULMONARY ... EMBOLISM - LBBB
Here’s an ECG of a patient with 100% Acute LAD Occlusion

Remember that RBBB normally has ST
patient with 100% Acute ... Remember that RBBB ... So ANY ST Elevation ... have ’relative elevation ... STEMI Criteria misses
3 ECG patterns for Acute Occlusion MI (OMI) without meeting ST elevation criteria
 • Posterior MI
Acute Occlusion ... without meeting ST ... elevation criteria ... MyocardialInfarction #OMI #STEMI ... #equivalent #diagnosis
Causes of ST Segment Elevation - Differential Diagnosis Framework

STEMI:
 • Upsloping convex STE: "Pardee's sign" +
Diagnosis Framework ... STEMI: • Upsloping ... morphology similar to LBBB ... complex Pulmonary Embolism ... #ST #STEMI #Segment
ECG changes in Pulmonary Embolism
 - 
Sinus tachycardia 
 - 
Complete or incomplete RBBB 
 -
Embolism - Sinus ... or incomplete RBBB ... elevation and depression ... #AcutePE #HighRisk ... #Diagnosis
Modified Sgarbossa Criteria - Diagnostic Checklist for diagnosing MI in LBBB or Pacemaker
1) Identify LBBB or
- Diagnostic Checklist ... for diagnosing ... Discordance" = ST ... - Suspect STEMI ... #Checklist #EKG
Approach to ECGs - Ischemia
MI = Biomarkers + ECG or echo/angiogram findings
Pathologic Q - 1/3 height
women • DDx: Acute ... 0.5mm downgoing ST ... line; upsloping ST ... in V1, unless LBBB ... #EKG #diagnosis
STEMI Equivalents on ECG
 • Conventional STEMI - Elevation of ST segment at (or 40-60 ms
STEMI - Elevation ... 1 - ST elevation ... • Sgarbossa criterion ... deviation) • Acute ... #EKG #diagnosis
Modified Sgarbossa Criteria for diagnosing STEMI in the presence of a LBBB If there is concordant
for diagnosing ... STEMI in the presence ... of a LBBB If there ... elevation of greater ... #LBBB
EKG in Acute Pulmonary Embolism
The sensitivity and specificity for EKG findings in acute PE are low.
EKG
EKG in Acute Pulmonary ... • Non-specific ST-T ... Changes • STE ... #Embolism #AcutePE ... #diagnosis #cardiology