4 results
Cannon A waves during AVNRT on Physical Exam
In AVNRT, the atria and ventricles contract nearly simultaneously
the atria and ventricles ... contract nearly ... EKG of the same ... excludes other differentials ... #JVP #Cardiology
Lead AVR on ECG
1. Acute myocardial infarction: ST elevation > 1.5 mm in aVR, indicative of
Lead AVR on ECG ... Subepicardial atrial ... tachycardia ddx: AVNRT ... , AVRT, atrial tachycardia ... cardiology
Atrial septal defect

An ECG may show the “crochetage” pattern (92% specific)—a notch near the apex of
Atrial septal defect ... apex of the R wave ... #EKG #Cardiology ... #Crochetage #Sign ... #ASD
Negative Contrast Effect in Right Atrium - Differential Diagnosis
1. Small secundum ASD or PFO with left
Atrium - Differential ... Small secundum ASD ... #Atrium #RA #Differential ... #Diagnosis #cardiology ... echocardiogram #s4c