Stenosis of a novel frozen elephant trunk in a patient with chronic dissection

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ID: 333361
2026
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Ranked #125 of 147 articles by views in Interdisciplinary CardioVascular and Thoracic Surgery

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Abstract
Abstract A partial elephant trunk (PET), a new type of frozen elephant trunk, was designed to prevent distal stent graft-induced new entry using a thinner nitinol wire with less radial force. We report a case of PET stenosis in chronic dissection. Total arch replacement was performed using a PET. After weaning from cardiopulmonary bypass, the lower-limb blood pressure decreased to 90% of the upper-limb blood pressure. Intraoperative transesophageal echocardiography revealed incomplete PET expansion, and on postoperative day 1, the lower-to-upper body blood pressure ratio further decreased to 70% due to PET stenosis at the steeply angulated arch. Emergency thoracic endovascular aortic repair was successfully performed, completely resolving the pressure gradient.
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Authors Shigeto Tokunaga, Homare Okamura, Atsushi Yamaguchi
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Journal Interdisciplinary CardioVascular and Thoracic Surgery
Year 2026
DOI
10.1093/icvts/ivag279
URL
https://academic.oup.com/icvts/advance-article-pdf/doi/10.1093/icvts/ivag279/72201404/ivag279.pdf
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