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Differences between Mobitz Type I and Type II Second-Degree AV Block

#Mobitz #Wenckebach #TypeI #TypeII #Type1 #Type2
Second-Degree AV Block ... #Type1 #Type2 #AVBlock ... Cardiology #Comparison #Electrocardiogram
Pacemaker Placement Indications
Class I:
 • Third degree block
 • Advanced 2nd degree block
 • Symptomatic Mobitz
• Third degree block ... Advanced 2nd degree block ... or 3rd degree block ... First degree AV block ... Tri-fascicular block
Syncope - Differential Diagnosis
The percentage of syncopal events secondary to arrhythmias or structural disease is generally
Syncope - Differential ... percentage of syncopal ... Sick sinus, AV block ... Others Non-syncopal ... Unknown - 2% #syncope
Approach to ECGs - Syncope Syndromes
Electrolytes
 • ↑K - brady, peak T, wide QRS, no P,
Approach to ECGs - Syncope ... assoc with 1K, AV block ... Trifascicular block ... 1st degree heart block ... diagnosis #cardiology #electrocardiogram
Second degree AV Block type II (aka Mobitz II)
 • There is constant PR interval (normal
Second degree AV Block ... location of the block ... location of the block ... Second #Degree #AVBlock ... cardiology #ecg #ekg #electrocardiogram
Complete (3rd Degree) Heart Block on ECG

ECG of a man brought to the ER by paramedics
Degree) Heart Block ... an episode of syncope ... HeartBlock #ECG #EKG #Electrocardiogram
Atrioventricular Blocks (AV blocks) - ECG Diagnosis Summary
First Degree AV Block
 • The P wave is
First Degree AV Block ... bundle branch block ... Second Degree AV Block ... #AVBlock #cardiology ... ecg #diagnosis #electrocardiogram
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
Mobitz Type I (Wenckebach Phenomenon) 2nd Degree AV Block on EKG
 • P-R interval gradually increases
2nd Degree AV Block ... Second #Degree #AV #Block ... #AVBlock #diagnosis ... cardiology #EKG #ECG #Electrocardiogram
Atrioventricular (AV) Blocks

First Degree AV Block - "If your R is far from your P than
First Degree AV Block ... complex • Site of Block ... Second Degree AV Block ... • Site of Block ... ekg #diagnosis #electrocardiogram