24 results
Cannon A Waves
 • Caused by atrial contracting against a closed tricuspid valve
 • Atrioventricular dissociation
Cannon A Waves ... • The cannon a wave ... activation from SVT (e.g ... 2LmUODZ #Cannon #AWaves ... #diagnosis #cardiology
Multifocal Atrial Tachycardia (MAT) on EKG
 • Heart rate > 100 bpm (usually 100-150 bpm)
 •
(MAT) on EKG ... Irregularly irregular rhythm ... 3 distinct P-wave ... #diagnosis #cardiology ... #EKG #ECG #Electrocardiogram
Multifocal Atrial Arrhythmias on ECG
Multifocal atrial rhythm & Multifocal atrial tachycardia
ECG Recognition:
 • Variable P wave
Arrhythmias on ECG ... ECG Recognition ... #tachycardia #cardiology ... #diagnosis #ekg ... electrocardiogram #clinical #comparison
Cannon A Waves on Neck Examination

Cannon a waves! Notice that it occurs randomly, not predictably w/
Cannon A Waves on ... AV dissociation ... and an atrial tachycardia ... #JVP #Clinical ... #Video #Cardiology
Multifocal Atrial Tachycardia (MAT)
• At least 3 different P wave morphologies: 
• Rate 100-180
• Irregular 
Etiology
(MAT) • At least ... 3 different P wave ... #MAT #Cardiology ... #Diagnosis #ECG ... #EKG #Management
Cannon A waves during AVNRT on Physical Exam
In AVNRT, the atria and ventricles contract nearly simultaneously
Cannon A waves during ... EKG of the same ... rapid cannon a waves ... Hussainch #Cannon #Awaves ... #Cardiology #Neck
Approach to ECGs - VT vs. SVT - Wide Tachycardias
DDx = VT vs. SVT with BBB
All
SVT - Wide Tachycardias ... nadir of the S-wave ... nadir of the S-wave ... VentricularTachycardia #Versus #ecg ... #ekg #cardiology
Approach to ECGs - Tachy/Bradyarrhythmias
Tachyarrhythmias - HR > 100
Wide
  (1) VT - DANGER
  (2)
(MAT) - 3 ... different P waves ... arrest - escape rhythms ... bradyarrhythmia #ECG ... #EKG #diagnosis
Lead AVR on ECG
1. Acute myocardial infarction: ST elevation > 1.5 mm in aVR, indicative of
Lead AVR on ECG ... aVR • Classic EKG ... prominent terminal R wave ... #AVR #leadAVR #ecg ... #ekg #differential
Summary of Heart Blocks
1st Degree Heart Block:
 • Prolonged PR >200ms (5 small squares).
 • Narrow
non-conducted P wave ... Non-conducted P waves ... #Diagnosis #EKG ... electrocardiogram #ecg ... #cardiology