11 results
Hyperkalemia on EKG
"Mild" Hyperkalemia
 • Peaked, narrow-based T Waves
 • Double counting of HR by EKG
Hyperkalemia • QRS ... widening • Sinus ... waves • Pseudo-STEMI ... #ECG #electrocardiogram ... #cardiology #diagnosis
The 4 Variants of Sinus Arrhythmia
Phasic Sinus Arrhythmia:
 • The rate increases with respiration and decreases
encompassing a QRS ... an intervening QRS ... #diagnosis #ekg ... #ecg #electrocardiogram ... variants #clinical #comparison
Approach to ECGs - VT vs. SVT - Wide Tachycardias
DDx = VT vs. SVT with BBB
All
Approach to ECGs ... Fusion beats - a sinus ... VT #VTach #SVT #Comparison ... #ekg #cardiology ... #diagnosis #electrocardiogram
Approach to ECGs - Ischemia
MI = Biomarkers + ECG or echo/angiogram findings
Pathologic Q - 1/3 height
1/3 height of QRS ... or bigger than QRS ... #EKG #diagnosis ... #electrocardiogram ... #cardiology #STEMI
Approach to ECGs
Check
 - Age, gender, name
 - 25mm/s; 10mm/mV
 - 1mm = 40ms; 0.1 mV
Rate
Approach to ECGs ... Short QT <300-360 ms ... #EKG #diagnosis ... #electrocardiogram ... #cardiology #interpretation
Modified Sgarbossa Criteria - Diagnostic Checklist for diagnosing MI in LBBB or Pacemaker
1) Identify LBBB or
Checklist for diagnosing ... MI in LBBB or Pacemaker ... Criteria - Suspect STEMI ... #electrocardiogram ... #ecg #cardiology
The 4 Variants of Sinus Arrhythmia
Phasic Sinus Arrhythmia:
 • The rate increases with respiration and decreases
encompassing a QRS ... an intervening QRS ... #diagnosis #ekg ... #ecg #electrocardiogram ... variants #clinical #comparison
STEMI Equivalents on ECG
 • Conventional STEMI - Elevation of ST segment at (or 40-60 ms
on ECG • Conventional ... segment at (or 40-60 ms ... #EKG #diagnosis ... #differential #cardiology ... #electrocardiogram
VT versus SVT with Aberration - Interpretation Cheat Sheet

Features favouring VT
● Absence of typical RBBB or
Cheat Sheet Features ... dissociation (P and QRS ... point) of S > 100 ms ... Aberration #Aberrancy #Comparison ... #Diagnosis #Cardiology
Atrioventricular Blocks (AV blocks) - ECG Diagnosis Summary
First Degree AV Block
 • The P wave is
(AV blocks) - ECG ... Diagnosis Summary ... blocks #AVBlock #cardiology ... #ekg #ecg #diagnosis ... #electrocardiogram