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Literature attachment: in-stent restenosis percutaneous coronary intervention after chimney stenting during transcatheter aortic valve-in-valve implantation.As reported in a research article, a patient had a valve-in-valve to replace a trifecta valve after about 9 years due to stenosis and calcification.A more comprehensive assessment could not be performed as the event was non-contemporaneously reported through a literature review and no device was received for analysis.Based on the information received, the cause of the reported incident could not be conclusively determined.
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The article, "in-stent restenosis percutaneous coronary intervention after chimney stenting during transcatheter aortic valve-in-valve implantation", was reviewed.The research article presents a case study of a 82-year-old woman with prior aortic valve replacement in 2012.It was reported on an unknown date in 2012, a 19mm trifecta valve was implanted.The patient was admitted to the hospital in march 2021 due to heart failure and unstable angina.Transthoracic echocardiogram (tte) showed a degenerated biological aortic prosthesis with severe stenosis, and coronary angiography (ca) showed a severely calcified, critical stenosis in the right coronary artery (rca) ostium.Multislice computed tomography (msct) confirmed severe rca ostium calcification and showed a considerable risk of rca obstruction with transcatheter aortic valve-in-valve implantation (viv-tavi).A decision was made to perform simultaneous viv-tavi and percutaneous coronary intervention (pci) to the rca using a chimney stenting technique with a 4x30mm drug-eluting stent and a 23mm non-abbott transcatheter heart valve.The patient was discharged uneventfully with no report of adverse patient effects.The article concluded while chimney stenting is a bailout technique to treat coronary artery obstruction during transcatheter aortic valve implantation, long-term data on the incidence of in-stent restenosis (isr) and stent thrombosis are unclear.Coronary access and pci after chimney stenting remain challenging, especially in the setting of self-expanding thvs with tall frames and small cells.Finally, in patients at high risk for coronary artery obstruction during tavi, intravascular ultrasound (ivus) facilitates assessment of coronary ostium patency and optimization of chimney stenting and should therefore be considered in these cases.[the primary and corresponding author is oriol rodríguez-leor, hospital universitari germans trias i pujol, badalona, barcelona, spain, with corresponding email: oriolrodriguez@gmail.Com].
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