Transcatheter Aortic Valve Implantation-related Acute Ascending Aortic Dissection Diagnosed Intraoperatively Using Transoesophageal Echocardiography: A Case Series

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ID: 317472
2026
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Abstract
Abstract Background Transcatheter aortic valve implantation has been widely adopted as a less invasive treatment for aortic stenosis. Although rare, acute ascending aortic dissection associated with transcatheter aortic valve implantation is a life-threatening complication that necessitates prompt intraoperative diagnosis. This case series reports two cases of acute ascending aortic dissection occurring during transcatheter aortic valve implantation performed under general anaesthesia. Case Summary Cases 1 and 2 involved an 87-year-old woman and a 90-year-old man, respectively, both of whom underwent transfemoral transcatheter aortic valve implantation for severe aortic stenosis. In both cases, procedural difficulty was encountered, including valve pop-up and resistance during device passage. Before overt haemodynamic deterioration became apparent, intraoperative transoesophageal echocardiography revealed an intimal flap and false lumen in the ascending aorta, leading to the diagnosis of acute ascending aortic dissection. Both patients underwent prompt surgical intervention. Case 1 underwent surgical aortic valve replacement and ascending aortic replacement, whereas Case 2 underwent surgical aortic valve replacement and total arch replacement. Both patients were discharged ambulatory without neurological sequelae. Discussion Unlike fluoroscopy and angiography, which provide only intermittent assessment, transoesophageal echocardiography enables continuous intraoperative evaluation and can simultaneously detect findings directly relevant to haemodynamic status, including an intimal flap, false lumen, acute aortic regurgitation, and pericardial effusion. This case series suggests that additional transoesophageal echocardiography assessment prompted by procedural difficulty may contribute to the early diagnosis of serious complications and facilitate prompt conversion to surgical intervention.
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Authors Yuki Makizawa, Atsushi Fujiwara, Takanobu Fujisawa, Yusuke Kusaka, Toshiaki Minami
Journal European Heart Journal - Case Reports
Year 2026
DOI
10.1093/ehjcr/ytag457
URL
https://doi.org/10.1093/ehjcr/ytag457
Keywords Keywords not found

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