Thank you, Nishith.
These results are a little surprising. One might have expected angio-driven PCI to be beneficial in the short term by reducing the “vulnerable plaque burden” in non-culprit arteries.
However, events were higher in the angio-PCI arm, largely driven by spontaneous MIs and ischemia-driven revasc. Most IDR was due to 'stent failure' (restenosis or thrombosis)*; rates of de novo lesions were numerically lower but statistically identical (the
#s are very small).
(*Not surprising given the very low rate of IVI: ~5% for culprit and <10% for non-culprit PCI.)
Putting it all together, AIR-STEMI tells us that the benefit of FFR-guided PCI after MI isn’t better diagnosis of abnormal physiology, but the avoidance of unneeded PCI and stent-related complications.