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  • Title: Novel Mechanism of Delayed Coronary Obstruction after Transcatheter Aortic Valve Replacement for Severe Aortic Stenosis: "Uppercut Phenomenon".
    Author: Shishido K, Yamanaka F, Noguchi K, Ota T, Fushimi T, Saito S.
    Journal: Cardiovasc Revasc Med; 2019 Nov; 20(11S):79-84. PubMed ID: 31350193.
    Abstract:
    Delayed coronary obstruction is a rare complication after transcatheter aortic valve replacement (TAVR), and leads to a high in-hospital mortality rate. Here, we present a case of unpredictable delayed coronary obstruction in the left main trunk (LMT) after self-expandable device implantation because the left coronary height was enough over 15 mm. LMT obstruction was caused by a heavy calcification that was pushing up from the outside of the LMT, like an "uppercut" phenomenon. Stent-in-stent technique was a useful option for this type of LMT obstruction.
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