Oxygen step up in right atrium – MCQ

Oxygen step up in right atrium – MCQ
Step up in oxygen saturation on cardiac catheterization in the right atrium is suggestive of:
a) Atrial septal defect
b) Ventricular septal defect
c) Patent ductus arteriosus
d) All of the above
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Source: Cardiophile MD - March 31, 2020 Category: Cardiology Authors: Prof. Dr. Johnson Francis Tags: Medicine MCQ - CVS Source Type: blogs