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Myocardial infarction localization. A 12 lead EKG creates a 360 degree view of the electrical activity
A 12 lead EKG creates ... Contiguous leads ... heart (inferior leads ... no contiguous lead ... #EinthovenTriangle
Sgarbossa Criteria A - Concordant ST segment elevation of >1m, in any lead | Sgarbossa Criteria
of >1m, in any lead ... depression of >1mm in leads ... of >5mm, in any lead
Normal Sinus Rhythm - ECG Diagnosis
Normal sinus rhythm (NSR) is an impulse that originates in the
• upright P in leads ... • variable in leads ... • upright in leads ... V4-V6 (in 12-lead ... positive-negative) in leads
Limb Lead Reversal
In order to understand why the leads look the way they do, we must
Limb Lead Reversal ... understand why the leads ... all augmented leads ... average of two limb leads
Localization of MI by ECG Leads #Diagnosis #EM #IM #Cardiology #EKG #Localization #Leads
Localization of MI by ECG Leads ... #Localization #Leads
VT versus SVT with Aberration - Interpretation Cheat Sheet

Features favouring VT
● Absence of typical RBBB or
all precordial leads ... , i.e. leads V1- ... 100 ms in any V lead
Progression of EKG changes in Acute Coronary Syndrome (ACS)
Hyperacute T waves:
 • Broad-based and symmetrical, usually
two contiguous leads ... two contiguous leads ... two contiguous leads ... points: • In leads ... : 0.1 mV • In leads
Approach to ECGs - Ischemia
MI = Biomarkers + ECG or echo/angiogram findings
Pathologic Q - 1/3 height
height of QRS in 2 leads ... any 2 contiguous leads ... - 2 contiguous leads ... in precordial leads ... infarct, get a 15 lead
Causes of ST Segment Elevation - Differential Diagnosis Framework

STEMI:
 • Upsloping convex STE: "Pardee's sign" +
PPD • Opposing leads ... in anteroseptal leads ... aVL, when limb leads ... wave in lateral leads ... time > 60ms in leads
Myocysticercosis on Leg X-Ray

Cysticercus larva in the muscles appear like rice grain calcifications.

Consumption of contaminated food
food with eggs lead ... leads to hatching