Ask Dr. Z

Would you code an additional IFR for the RCA in this situation? "The wire was advanced across the left circumflex OM lesion and the iFR was 0.93, consistent with non-hemodynamically significant lesion. We then decided to do IFR assessment of the right coronary artery lesion. We used the same guide and advanced a wire across the right coronary artery lesion; however, the iFR wire malfunctioned and would not give us an accurate iFR result. However, because the lesion did not appear to be significant, we decided not to proceed with any further intervention."