24 results
Stimulated
SA node
AV node -
Un-stimulated
#PQ
(mV) 0
ECG (lead II)
QRS
#QRS
#SA node
#AV node
#Bundle of His
Bundle branches
#Purkinje fibers
#QRS
#ST
Un-stimulated #PQ ... (mV) 0 ECG (lead ... fibers #QRS #ST
Approach to ECGs - Ischemia
MI = Biomarkers + ECG or echo/angiogram findings
Pathologic Q - 1/3 height
new/old infarct STEMI ... • DDx: Acute STEMI ... 0.5mm downgoing ST ... have no pain - LAD ... avR - proximal LAD
De Winter T Wave ECG Pattern 
STEMI Equivalent - Left anterior descending (LAD) occlusion 

1) Upsloping
ECG Pattern STEMI ... anterior descending (LAD ... 1) Upsloping ST ... (>= 1 mm) 2) ST
Here’s an ECG of a patient with 100% Acute LAD Occlusion

Remember that RBBB normally has ST
with 100% Acute LAD ... RBBB normally has ST ... an isolectric ST ... STEMI Criteria misses ... @EM_RESUS #LAD
STEMI Equivalents on ECG
 • Conventional STEMI - Elevation of ST segment at (or 40-60 ms
STEMI Equivalents ... • Conventional STEMI ... aVR • Posterior STEMI ... Sgarbossa criterion 3 (modified ... anterior leads) #STEMI
Reperfusion Management of Myocardial Infarction with ST-segment Elevation (STEMI)

#STEMI #PCI #Fibrinolysis #Transfer #Reperfusion #Algorithm #Timeline #Cardiology
Infarction with ST-segment ... Elevation (STEMI ... ) #STEMI #PCI ... #Reperfusion #Algorithm
Modified Sgarbossa Criteria - Diagnostic Checklist for diagnosing MI in LBBB or Pacemaker
1) Identify LBBB or
Modified Sgarbossa ... Discordance" = ST ... 3) Implement Modified ... Criteria - Suspect STEMI ... > 1 mm in any lead
Suspected ACS - OMI vs STEMI - Differential Algorithm

The name STEMI cognitively inspires EPs to fail
Suspected ACS - OMI vs STEMI ... - Differential Algorithm ... The name STEMI ... believe that the ST ... #Differential #Algorithm
Recommendations for initial management of Unstable Angina/NSTEMI

Flowchart for class I and class lla recommendations for initial
Unstable Angina/NSTEMI ... angina/non— ST-segment ... infarction (UA/NS TEMI ... UnstableAngina #Management #Algorithm
Modified Sgarbossa Criteria for diagnosing STEMI in the presence of a LBBB If there is concordant
Modified Sgarbossa ... for diagnosing STEMI ... is concordant ST ... ≥ 1mm (in any lead ... Cardiology #Sgarbossa #Modified