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Incremental value of live/real time three-dimensional transesophageal echocardiography over the two-dimensional technique in the assessment of aortic aneurysm and dissection
Authors:Joshi Deepak  Bicer Elif Ijlal  Donmez Cevdet  Hsiung Ming C  Nanda Navin C  Sadat Kamel  Sudhakar Selvin  Ibrahim Hisham  Pandey Abhilasha  Karia Nidhi  Bhagatwala Kunal  Yin Wei-Hsian  Jeng-Wei  Chung-Yi-Chang  Chung Yi-Cheng  Tsai Shen-Kou  Dumaswala Bhavin  Dumaswala Komal
Institution:Division of Cardiovascular Disease, University of Alabama at Birmingham, Birmingham, Alabama 35249, USA.
Abstract:We compared findings from intraoperative live/real time three-dimensional transesophageal echocardiography (3DTEE) and two-dimensional transesophageal echocardiography (2DTEE) with surgery in 67 patients having aortic aneurysm and/or aortic dissection. Of these, 20 patients had aortic aneurysm without dissection, 21 aortic aneurysm and dissection, and 26 aortic dissection without aneurysm. 3DTEE diagnosed the type and location of aneurysm correctly in all patients unlike 2DTEE, which missed an aneurysm in one case. There were four cases of aortic aneurysm rupture. Three of them were diagnosed by 3DTEE but only one by 2DTEE, and one missed by both techniques. The mouth of saccular aneurysm, site of aortic aneurysm rupture, and communication sites between perfusing and nonperfusing lumens of aortic dissection could be viewed en face only with 3DTEE, enabling comprehensive measurements of their area and dimensions as well as increasing the confidence level of their diagnosis. In all patients with aortic dissection, 3DTEE enabled a more confident diagnosis of dissection because the dissection flap when viewed en face presented as a sheet of tissue rather than a linear echo seen on 2DTEE which can be confused with an artifact. 2DTEE missed dissection in one patient. In six cases the dissection flap involved the right coronary artery orifice by 3DTEE and surgery. These were missed by 2DTEE. Aortic regurgitation severity was more comprehensively assessed by 3DTEE than 2DTEE. Aneurysm size by 3DTEE correlated well with 2DTEE and surgery/computed tomography scan. In conclusion, 3DTEE provides incremental information over 2DTEE in patients with aortic aneurysm and dissection.
Keywords:live/real time three‐dimensional echocardiography  live/real time three‐dimensional transesophageal echocardiography  two‐dimensional echocardiography  transesophageal echocardiography  thoracic aorta  aortic aneurysm  aortic dissection
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