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[A surgical treatment of type A aortic dissection associated with annuloaortic ectasia using hypothermic circulatory arrest with retrograde cerebral perfusion].

A 30-year-old man was admitted to the hospital because of type A aortic dissection associated with annuloaortic ectasia (AAE). A magnetic resonance image (MRI), computed tomography of the aorta demonstrated aortic enlargement with dissection, but revealed no evidence of dissection of the aortic arch. A transesophageal echocardiography demonstrated dissection of the aortic arch. A graft replacement of the total aortic root were performed using hypothermic circulatory arrest with retrograde cerebral perfusion and open distal anastomosis. We reconstructed coronary ostiums with carrel patch, and discontinued the operation without major bleeding. No neurological deficit was found postoperatively.

Adult↗

Fatal fungal infection complicating aortic dissection following coronary artery bypass grafting.

The case of a 52-year-old man with severe coronary atheroma/ischaemic heart disease, who underwent successful triple vessel coronary artery bypass grafting is described. One month later this was complicated by aortic dissection arising at the aortic cannulation site. An emergency resection and Dacron graft placement were performed. Five weeks later he represented with haemoptysis. Despite inconclusive investigations the patient went on to suffer a massive fatal haemoptysis. Autopsy revealed Candida infection of the graft with a secondary aortobronchial fistula.

Aortic Dissection↗

Proximal Aortic Dissection Complicated by Cardiac Tamponade.

Cardiac tamponade is a well recognized complication of acute proximal aortic dissection and is almost uniformly fatal if not immediately diagnosed and surgically treated. Pericardiocentesis has an ill-defined and perhaps deleterious role in the management of this condition. Severe concentric left ventricular hypertrophy and intravascular volume depletion may further impede ventricular filling in a patient with cardiac tamponade. We describe the management of a patient who presented in a confused state with an acute proximal aortic dissection complicated by cardiac tamponade and associated with evidence of left ventricular outflow tract obstruction. In such a patient, aggressive fluid administration and emergency surgery should be the treatment of choice.

Journal Article↗

[Pathological findings of the aortic wall at the site of ligation against the rigid rings of an intraluminal graft for acute DeBakey type I aortic dissection].

A ringed intraluminal graft has been utilized in the surgical treatment for dissecting aneurysm since 1978. Histological findings of the aortic wall long after surgery, however, have not been described in detail, and concern remains about possible pressure necrosis at the point of encirclement. The following report is for a case of acute type I aortic dissection which required the use of an intraluminal surgical graft in a patient who died eight months postoperatively of a disease unrelated to previous surgical management. The pathological findings at autopsy were as follows. At the site of circumferential ligations around the aorta, 1) discontinuity of the elastic fibers in the media was found only at the outer surface, 2) there was no compression necrosis in the outer half of the media, although a dark shade of elastic fibers was recognized, 3) there were no pathological changes in the inner half of the media. In addition, complete repair of the intimal tear as well as closure of the false lumen replaced by collagen fibers was confirmed histologically in the whole length of aorta where the intraluminal graft had been placed. We conclude that concerns about the fragility of the aortic wall at the site of circumferential ligation, the migration of prosthesis, and the formation of thrombi is alleviated by these pathological observation.

Acute Disease↗

Treatment of chronic type B aortic dissection with endovascular stent-graft placement.

A 74-year-old man with chronic aortic dissection was treated with an endovascular stent graft, fabricated from expanded polytetrafluoroethylene and a Z-stent. It was placed in the true lumen to close an entry tear. Closure was obtained immediately and thrombosis of the false lumen at the descending thoracic aorta was observed on computed tomography (CT) obtained 1 week later. No procedure-related complications developed. The patient is doing well with no adverse events including aortic rupture or aortic branch ischemia.

Aged↗

Toward the best treatment for uncomplicated patients with type B acute aortic dissection: A consideration for sound surgical indication.

BACKGROUND: In the treatment of type B acute aortic dissection without complications, better results are obtained if surgery is performed before enlargement of the aorta in patients who are predicted to show aortic enlargement and if drug-based treatment is continued for patients who are predicted to show no enlargement. The purpose of this study was to predict the acute-phase factors that may affect chronic-phase aortic enlargement by studying chronic-phase enlargement of dissections in patients without complications during the acute phase. METHODS AND RESULTS: In 101 patients with type B acute dissection who had no complications, univariate and multivariate factor analyses were performed to determine the predictors for chronic-phase enlargement (>/=60 mm) of the dissected aorta. The independent predominant predictors for aortic enlargement in the chronic phase were a maximum aortic diameter of >/=40 mm and a patent false lumen during the acute phase. The values of actuarial freedom from aortic enlargement for the patients with a maximum aortic diameter of 40 mm and a patent false lumen at 1, 5, and 10 years were 43%, 33%, and 22%, respectively, whereas in patients with a maximum aortic diameter of <40 mm and a closed false lumen, the values were 97%, 94%, and 84%, respectively. CONCLUSIONS: These results suggest that patients with type B acute aortic dissection who show a maximum aortic diameter of >/=40 mm and a patent false lumen should undergo surgery earlier during the chronic phase before enlargement of aorta, whereas patients with a maximum aortic diameter of <40 mm and a closed false lumen should continue to receive hypotensive therapy.

Adult↗

Results of surgical treatment of ascending aortic dissections occurring late after cardiac operation.

Seven patients (one woman) have been seen with ascending aortic dissections at a mean of 8.8 years (6 months to 20 years) after cardiac operation. Previous cardiac operations included saphenous vein coronary artery bypass grafts (CAB) (two), aortic valve replacement (AVR) (one), aortic valvulotomy (one), AVR plus CAB (two), and patch closure of a ventricular septal defect and repair of a perforated aortic cusp (one). During the initial operation, three of seven patients had dilatation of the ascending aorta. Five of seven patients were hypertensive at the time of diagnosis of dissection. Six patients were managed by operation. A composite prosthetic aortic valve and ascending aortic graft with implantation of coronary ostia and saphenous vein grafts was utilized in three patients. In three the repair was by graft replacement of the ascending aorta alone. Five of six patients survived repair and were asymptomatic at discharge. Subsequent problems resulting from distal, descending thoracic, or abdominal aortic extension of the dissection were frequent and necessitated fenestration (one patient) or a graft replacement of the infrarenal aorta (one patient). We conclude that patients may be predisposed to aortic dissection occurring late after cardiac operation, possibly related to prior aortic valvular disease or systemic arterial hypertension. Operative repair is feasible and relatively safe. Follow-up for potential complications of distal aortic problems seems indicated. Techniques of operative repair in these patients are emphasized.

Adult↗

[Bilateral pneumothorax and rupture of dissecting aortic aneurysm following a mitral valve replacement in Marfan syndrome: a case report].

A 12-year-old girl with Marfan syndrome was referred to our department because of severe mitral regurgitation. The patient was pale and in a pre-shock condition. The echocardiogram revealed a chordae rupture of the posteromedial papillary muscle at the posterior leaflet. A moderate dilatation of the aortic annulus (30 mm) and the ascending aorta (45 mm) without aortic regurgitation was also observed. Emergent mitral valve replacement was performed without replacement of the aortic valve or the ascending aorta. After two months, the patient developed bilateral pneumothorax, which was resistant to continuous suction therapy and finally required surgical treatments. Despite the relatively uneventful recovery, a lethal rupture of dissecting aortic aneurysm into the pericardial cavity, developed four months after the initial operation. We discussed the desired surgical approaches and respiratory problems in patients with connective tissue disorder.

Adolescent↗

Aortic dissection with a fistulous communication into the right atrium: a case report.

A case of aortic dissection (type 1, De Bakey) with a rent into the right atrium (RA), diagnosed by echocardiography (echo) and confirmed by aortography, is reported. The patient presented with cardiac failure and a continuous murmur in the right second and third intercostal spaces. The patient has survived for two years with medial treatment.

Adult↗

Aortic dissection of Kommerell's diverticulum in Marfan's syndrome.

We report a surgical case of chronic aortic dissection with an entrance tear on Kommerell's diverticulum, a rare embryologic anomaly, with an extension to the arteria lusoria, in a patient with Marfan's syndrome. The operation consisted of aortic root and arch replacement with reimplantation of the right subclavian artery in the right carotid artery under circulatory arrest and deep hypothermia.

Adult↗