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EKG Interpretation Cheat Sheet
1) Rate 
 - Regular - Count-Off 
 - Irregular - Count number
EKG Interpretation ... Cheat Sheet 1) ... Interval: • 1° ... (1 mm) wide > ... @AmyChung #EKG
Typical ECG changes in acute pericarditis includes: stage 1 - diffuse, positive, ST elevations with reciprocal
includes: stage 1 ... 3 - diffuse T wave ... inversions (may not be ... may be indefinitely ... IM #Cardiology #EKG
Modified Sgarbossa Criteria - Diagnostic Checklist for diagnosing MI in LBBB or Pacemaker
1) Identify LBBB or
or Pacemaker 1) ... Should see "Appropriate ... Concordant STE > 1 ... Concordant STD > 1 ... Diagnosis #Checklist #EKG
STEMI Equivalents on ECG
 • Conventional STEMI - Elevation of ST segment at (or 40-60 ms
segment at (or 40-60 ms ... , often with 1-2 ... with R/S ratio > 1 ... #EKG #diagnosis ... #differential #
Progression of EKG changes in Acute Coronary Syndrome (ACS)
Hyperacute T waves:
 • Broad-based and symmetrical, usually
Progression of EKG ... ) Hyperacute T waves ... or R/S ratio >1 ... inversions may be ... SatyaPatelMD #EKG
Quinidine produces the following ECG changes:
1. Prolongation of Q-T interval:
2. Prolongation of QRS complex:
3. Prominent V
the following ECG ... changes: 1. ... Prominent V wave ... P wave may be wide ... #EKG #Quinidine
Approach to ECGs - Syncope Syndromes
Electrolytes
 • ↑K - brady, peak T, wide QRS, no P,
QT, Osborn J (see ... withlK Brugada 1 ... strain (neg TV 1- ... #EKG #Checklist ... electrocardiogram #differential
Approach to ECGs - Ischemia
MI = Biomarkers + ECG or echo/angiogram findings
Pathologic Q - 1/3 height
Pathologic Q - 1/ ... in 2 leads or 1 ... box wide, can be ... #EKG #diagnosis ... Interpretation #differential
Pericarditis on EKG
Stage 1 - Widespread ST elevation (<5mm) and PR depression; In aVR: ST depression
Pericarditis on EKG ... Stage 1 - Widespread ... - Widespread T wave ... Can also be seen ... #Pericarditis #EKG
Causes of ST Segment Elevation - Differential Diagnosis Framework

STEMI:
 • Upsloping convex STE: "Pardee's sign" +
Segment Elevation - Differential ... should be discordant ... Causes - STE can be ... Segment #Elevation #differential ... #ekg #electrocardiogram