Negative Contrast Effect in Right Atrium - Differential Diagnosis 1. Small secundum ASD or PFO with left to right shunt 2. Flow from IVC hampering RA opacification by agitated saline 3. Inadequate injection causing heterogenous opacification 4. Prominent Chiari network altering flow in RA Dr. Akram Neyaz @DrAkramNeyaz #Negative #Contrast #Effect #Right #Atrium #RA #Differential #Diagnosis #cardiology #clinical #echocardiogram #s4c #pocus #bubble
