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      Acute Dissection of the Ascending Aorta as a Rare Complication of Aortocoronary Bypasses Surgery: A Case Report

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          Many complications may ensue coronary bypass surgery. Among these complications, early or late dissection of the ascending aorta is a very rare condition. Successful surgery without life-threatening results can save lives. In this case report, we present a case of aortic dissection due to cross-clamp injury in a patient who underwent coronary artery bypass surgery.

          A 60-year-old female patient underwent double-vessel aortocoronary bypass surgery due to coronary artery disease. After distal bypasses were performed and the cross-clamp was removed, dissection of the aorta occurred. Consequently, axillary cannulation and ascending aortic replacement with a prosthetic graft were performed via the open technique. The saphenous vein graft was sutured to the aortic prosthetic graft, and cardiopulmonary bypass was terminated after hemodynamic stability was achieved. The patient was discharged on the 10th postoperative day, and she has been followed up for 2 years after surgery without any problems.

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          Retrograde type A dissection after endovascular stenting of the descending thoracic aorta. Is the risk real?

          Retrograde type A dissection during or after endoluminal graft repair of the descending thoracic aorta is a potentially lethal complication unique to thoracic endografting. Our aim is to increase its awareness and to review possible etiological factors. Two hundred and eighty-seven patients with different thoracic aortic pathologies were treated with endovascular prostheses over the last 6 years (February 2000 to March 2006) under a single-site protocol. A retrospective review was conducted to identify any retrograde aortic dissections by both chart and film review. Factors that may have contributed to its formation were also documented. This population was analyzed for the complication of retrograde aortic dissection as well as the factors related to its occurrence. Seven patients (2.4%) with a gender distribution of three males and four females experienced a retrograde type A dissection within this sample at a median of 202 days. The mean age was 74 years (range 53-83). Aortic pathologies included aortic dissections (n=6) and thoracic aortic aneurysm (n=1). There were (n=3) 43% retrograde type A dissections identified within the perioperative period. Balloon angioplasty was performed in 71.4% (n=5). Two female patients (28.6%) had this event identified within their initial hospitalization with fatal consequences. Overall mortality was 57% (n=4) with extension of dissection the primary cause of death n=3 and open surgical repair (n=1) after an extension of retrograde dissection. Female gender, use of stent-grafts for dissection and possible aggressive balloon angioplasty may play a role in the cause of retrograde type A dissection. A close surveillance program is recommended when using thoracic endografts outside the recommended device instructions for use.
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            Pseudoaneurysm of the ascending aorta following cardiac surgery.

            Pseudoaneurysm of the ascending aorta is an unusual and potentially fatal complication of cardiovascular surgery. Most pseudoaneurysms are associated with aortic valve or coronary artery bypass graft surgery and are often mycotic in origin. Chest roentgenography and aortography have been the principle methods of diagnosis. Recently, contrast enhanced computed tomography (CT) has proven to be a useful means of diagnosis, providing a less invasive method of distinguishing pseudoaneurysm from other causes of fever and mediastinal widening in the postoperative cardiovascular patient. Thirty one cases of postoperative pseudoaneurysm of the ascending aorta occurring since 1963 are reviewed, including seven cases from our experience.
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              Intraoperative aortic dissection.

              Intraoperative aortic dissection is a rare but potentially fatal complication of open heart operations. If the dissection is promptly recognized and repaired, however, the outcome may be significantly better. In this study, we reviewed the hospital records of patients with dissection of the aortic arch occurring as a complication of a cardiac operation at Massachusetts General Hospital and Mt. Auburn Hospital from January 1980 through June 1990. During this period, 14,877 surgical procedures with the use of cardiopulmonary bypass and aortic cannulation were performed, and 24 patients (0.16%) with iatrogenic aortic dissection were identified. Dissection was discovered intraoperatively in 20 patients and postoperatively after complications developed in 4. Of the 20 patients whose injuries were discovered intraoperatively and repaired, 4 (20%) died. Of the 4 whose injuries were discovered after operation, 2 (50%) died. The primary cause of death was ventricular dysfunction resulting from myocardial ischemia. Dissections originated at the aortic cannulation site in 10 patients, at the cross-clamp site in 8, at the site of the partial-occlusion clamp in 7, at the proximal anastomosis in 1 patient, and as a result of direct injury in 1. Three of these patients had simultaneous injuries at the aortic cannulation site and at the heel of the partial-occlusion clamp. Two techniques of repair were used: primary repair and patch or tube graft insertion. There were two deaths in the patients who underwent primary repair and four deaths in patients requiring graft replacement. Although it is uncommon, intraoperative aortic dissection can be a lethal complication of cardiac operations.(ABSTRACT TRUNCATED AT 250 WORDS)

                Author and article information

                J Tehran Heart Cent
                J Tehran Heart Cent
                The Journal of Tehran University Heart Center
                Tehran University of Medical Sciences, 2006- (Tehran, Iran )
                October 2019
                : 14
                : 4
                : 191-194
                Department of Cardiovascular Surgery, Medical Faculty, Atatürk University, Erzurum, Turkey.
                Author notes
                [* ]Corresponding Author: Bilgehan Erkut, Atatürk University Medical Faculty, Department of Cardiovascular Surgery, Erzurum, Turkey. Tel & Fax: +90 442 344 8899. E-mail: bilgehanerkut@
                Copyright © 2015 Tehran Heart Center, Tehran University of Medical Sciences

                This is an Open Access article distributed under the terms of the Creative Commons Attribution License, ( which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

                Case Report

                Cardiovascular Medicine

                aorta, aneurysm, dissecting, coronary artery bypass


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