41 results
Summary of Heart Blocks
1st Degree Heart Block:
 • Prolonged PR >200ms (5 small squares).
 • Narrow
1st Degree Heart Block ... Mobitz I Heart Block ... Complete Heart Block ... • Block in AV ... Diagnosis #EKG #electrocardiogram
Hallmark ECG features of Ventricular Tachycardia (VT)
AV indicates atrioventricular; LAD, left axis deviation; LBBB, left bundle
ECG features of Ventricular ... bundle branch block ... bundle branch block ... #Ventricular #Tachycardia ... VTach #ECG #EKG #Electrocardiogram
Approach to ECGs - Tachy/Bradyarrhythmias
Tachyarrhythmias - HR > 100
Wide
  (1) VT - DANGER
  (2)
abberancy - N B Afib ... - w/ variable block ... (3) SA node block ... - Proximal AV block ... QRS - Distal AV block
Classic Digoxin-Associated Arrhythmias
 • Atrial fibrillation with an unusually slow ventricular response
 • Atrial Fibrillation with
unusually slow ventricular ... Complete Heart Block ... with 2:1 AV Block ... Tachycardia - ... cardiology #ecg #ekg #electrocardiogram
Anatomical Differential Diagnosis for Arrhythmias
 • SA node: Sinus bradycardia, Sick Sinus Syndrome (SSS)
 • AV
rhythm, Conduction blocks ... system: Conduction blocks ... • Ventricles: Ventricular ... Tachy-arrhythmias (ventricular ... Fibrillation (V-Fib
Tachyarrhythmia Framework - Differential Diagnosis
 • Narrow QRS - Regular Rhythm: Sinus tachycardia, AVNRT, Orthodromic AVRT,
w/ variable AV block ... bundle branch block ... bundle branch block ... with variable AV block ... bundle branch block
Tachycardia - Differential Diagnosis Table - Wide vs Narrow, Regular vs Irregular

Regular Rhythm - Narrow Complex
: • AFib > AFIutter ... + variable block ... WPW vs PMVT vs AFib ... Beware AV nodal blockers ... known QRS • AFib
Second Degree Heart Block, Mobitz Type II

• p waves are normal 
• QRS complexes are usually
Second Degree Heart Block ... bundle branch block ... beats • The block ... #SecondDegree #HeartBlock ... Cardiology #EKG #ECG #Electrocardiogram
Second Degree Heart Block, Mobitz Type I (Wenckebach)

P waves and QRS complexes are normal but... 
•
Second Degree Heart Block ... beating" • The block ... #SecondDegree #HeartBlock ... Cardiology #EKG #ECG #Electrocardiogram
Atrioventricular (AV) Blocks

First Degree AV Block - "If your R is far from your P than
First Degree AV Block ... Second Degree AV Block ... until a P wave (ventricular ... #heart #heartblock ... ekg #diagnosis #electrocardiogram