8 results
Cannon A Waves
 • Caused by atrial contracting against a closed tricuspid valve
 • Atrioventricular dissociation
Cannon A Waves ... a wave usually ... , it indicates AV ... activation from SVT (e.g ... #AWaves #diagnosis
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 ... waves are enough ... to diagnose the ... #Awaves #AVNRT
Atrioventricular Blocks (AV blocks) - ECG Diagnosis Summary
First Degree AV Block
 • The P wave is
blocks) - ECG Diagnosis ... Summary First ... group-beating" on the ECG ... #cardiology #ekg ... #ecg #diagnosis
Approach to ECGs - Tachy/Bradyarrhythmias
Tachyarrhythmias - HR > 100
Wide
  (1) VT - DANGER
  (2)
Narrow - Regular ... 3 different P waves ... block (lower AV ... bradyarrhythmia #ECG ... #EKG #diagnosis
EKG Interpretation Cheat Sheet
1) Rate 
 - Regular - Count-Off 
 - Irregular - Count number
EKG Interpretation ... interval < 120 ms = AV ... junction origin (e.g ... @AmyChung #EKG ... Interpretation #ECG
Summary of Heart Blocks
1st Degree Heart Block:
 • Prolonged PR >200ms (5 small squares).
 • Narrow
non-conducted P wave ... Non-conducted P waves ... • Block in AV ... #Diagnosis #EKG ... electrocardiogram #ecg
Atrioventricular (AV) Blocks

First Degree AV Block - "If your R is far from your P than
200 msec) • P wave ... intervals until a P wave ... completely absent, P waves ... heartblock #cardiology #ecg ... #ekg #diagnosis
Third Degree AV Block aka Complete Heart Block
 • In sinus rhythm with complete AV block,
but the P wave ... relationship with the R wave ... ThirdDegree #3rd #AVBlock ... Complete #cardiology #ekg ... #ecg #diagnosis