56 results
The JT Interval and Pro-Arrhythmic Risk
Measured from the J-point to the end of the T-wave, the
The JT Interval ... Bundle Branch Block ... Bundle Branch Block ... with QRS ≥120 ms ... #JTInterval #QTc
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 ... High-grade AV Block ... high-grade AV block
Second degree AV Block type II (aka Mobitz II)
 • There is constant PR interval (normal
Second degree AV Block ... is constant PR interval ... location of the block ... location of the block ... Second #Degree #AVBlock
Mobitz Type I (Wenckebach Phenomenon) 2nd Degree AV Block on EKG
 • P-R interval gradually increases
2nd Degree AV Block ... on EKG • P-R interval ... resets • P-P interval ... Second #Degree #AV #Block ... #AVBlock #diagnosis
Arrhythmias - Differential Diagnosis Algorithm

Bradyarrhythmia (<60 bpm)
 • Sinus Bradycardia
 • Sick Sinus Syndrome
 • SA
Differential Diagnosis Algorithm ... Syndrome • SA Block ... • AV Block (ISt ... (constant R-R Interval ... Differential #Diagnosis #Algorithm
Atrioventricular (AV) Blocks

First Degree AV Block - "If your R is far from your P than
First Degree AV Block ... with prolonged PR interval ... complex • Site of Block ... Second Degree AV Block ... • Site of Block
EKG Interpretation Cheat Sheet
1) Rate 
 - Regular - Count-Off 
 - Irregular - Count number
≥ 120 ms, origin ... : • 1° Block - ... >200ms • 2° Block ... loss of P • 2° Block ... • 3° Complete Block
Second Degree Heart Block, Mobitz Type I (Wenckebach)

P waves and QRS complexes are normal but... 
•
Second Degree Heart Block ... • PR interval ... beating" • The block
Second Degree AV Block Type I aka Mobitz I / Wenckebach 
 • Normal P waves.
Second Degree AV Block ... shortening of the RR interval ... • The RR interval ... the shortest RR interval ... Second #Degree #AVBlock
Type 1 Second-degree AV block, also known as Mobitz I or Wenckebach periodicity, is almost always
Second-degree AV block ... node.Mobitz I heart block ... prolongation of the PR interval ... complex, the PR interval