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At least 91 records · Page 5Linked to original sources
PubMed1989

[Total graft replacement of the thoracoabdominal aorta with reconstruction of visceral branches, intercostal and lumbar arteries in expanding chronic dissecting aneurysms of the thoracoabdominal aorta].

Four patients with expanding chronic dissecting thoracoabdominal aneurysm underwent total replacement of the thoracoabdominal aorta with reconstruction of all visceral branches, intercostal and lumbar arteries with the aid of femoro-femoral bypass. During aortic cross-clamping, selective celiac and both renal arteries perfusion was performed to prevent the organ ischemia. Somatosensory evoked potentials monitoring or spinal cord evoked potentials monitoring was also performed to detect the spinal cord ischemia. Surgical technique employed in this series was direct anastomosis of onlay patch graft to the normal true lumen from which visceral branches and intercostal and lumbar arteries arise. The celiac artery and left renal artery arise from the false lumen in some cases were reconstructed with graft interposition or direct anastomosis to an opening made in the onlay patch graft. All patients survived the operation, and are leading normal life late in the postoperative period except one who developed partial paraplegia. Total graft replacement of the thoracoabdominal aorta may be a valid technique for the treatment of expanding aneurysms of the dissecting thoracoabdominal aorta.

Adult↗
PubMed1985

[Non-invasive measurement of the elastic properties of the abdominal aorta and the analysis of aging change--changes of elasticity of the aorta by aging].

For the purpose of the non-invasive measurement of the elastic properties of human abdominal aorta, we developed high sensitive measurement system of small displacement of tissue. This system consists of phase locked echo tracking loop combined with conventional B-mode imaging. The sensitivity to displacement in the model experiment was in the order of micro meter. Pressure strain elastic modulus (Ep) and stiffness parameter (beta) of abdominal aorta were calculated by our equipment in 61 persons, which were subdivided into 3 age groups, the young group (20 persons less than 35 yrs.), the middle aged group (21 persons between 35 yrs. and 60 yrs.), and the old group (20 persons more than 60 yrs.). Ep in the young group was 0.99 +/- 0.34 X 10(6) dynes/cm2, the middle aged group 1.55 +/- 0.68 X 10(6) dynes/cm2, the old group 3.80 +/- 2.05 X 10(6) dynes/cm2. Beta in the young group was 9.3 +/- 3.3, the middle aged group 12.0 +/- 4.5, the old group 27.6 +/- 14.0. The values of Ep and beta in the old group were significantly different from those in the young group and the middle group. Moreover large deviation of the both values was showed within the old group. The influence of aging on the elastic properties of abdominal aorta was found with large individual variation in relation to the progression of the sclerotic change.

Adult↗
PubMedDate not supplied

Ascending aorta to femoral arteries bypass without opening the abdominal cavity. Choice treatment in cases of complete occlusion of the infrarenal aorta.

In two cases which needed a revascularization of the inferior limbs, it was possible to utilize the subrenal aorta (the first case was affected by an infrarenal aortic occlusion; the second by an infection of a previously inserted aortofemoral graft), the AA. elected to perform a bypass with a dacron graft between the ascending aorta and femoral arteries according to the technique already proposed by Kaplitt. Having accomplished the proximal anastomoses to the ascending aorta through a midsternal incision, the graft was placed into a properitoneal tunnel down to both inguinal regions. This tunnel was obtained in the anterior abdominal wall by a blind blunt dissection entering the properitoneal space at the inferior end of the sternal incision. In this way the opening of the abdomen is avoided. On account of its poor risk, this procedure is advisable not only in cases of infrarenal aortic occlusion but almost in all aged and poor risk patients who require a revascularization of the inferior limbs.

Aged↗
PubMed1985

Human platelet reactivity with intact segments of rabbit aorta and selected regions of rabbit, rat and human aorta.

A technique measuring platelet reactivity with vessel wall subendothelium has been modified to examine platelet reactivity with vessel pieces in place of intact segments of aorta of a specific diameter. This modification of Baumgartner's original technique (1) allows measurement of blood platelet reactivity with vessel pieces, 5 X 10 mm in size, mounted on perfusion chambers with "twist bands." Adhesion and aggregation of human platelets to deendothelialized surfaces of intact segments of rabbit aorta and pieces of rabbit, rat and human aorta, were equivalent. This modification will expand the use of Baumgartner's technique to investigations of platelet vessel wall interactions using blood platelets and vessels from numerous experimental animal models and humans. It will also facilitate examination of possible differences in thrombogenocity of selected areas of vessels such as those exhibiting stages of atherosclerotic plaque formation.

Animals↗
PubMed1999

Acquired thromboatheromatous coarctation of the aorta: acquired coarctation of the aorta.

BACKGROUND: Atheromatosis of the thoracic aorta and aortic arch is a well established source of systemic embolism. Acquired atheromatous coarctation of the aortic arch is a rare finding and not well documentated so far. CASE REPORT AND FINDINGS: Two patients presenting with intermittent claudication of the lower extremities were identified as having thromboatheromatous coarctation of the aortic arch as visualized by magnetic resonance tomography, fast CT scan, transesophageal echocardiography, cardiac catheterization and aortography. All findings including invasive hemodynamics resembled congenital coarctation of the aorta. One patient was treated surgically, while the other refused surgery and received long-term anticoagulation. CONCLUSION: Atheromatosis of the thoracic aorta and aortic arch not only cause systemic embolism, but may lead to the clinical and hemodynamic picture of coarctation of the aortic arch.

Aged↗
PubMed2006

Severe obstructive calcifications affecting the descending and suprarenal abdominal aorta without coexisting peripheral atherosclerotic disease--coral reef aorta.

The case of a 58-year-old woman with leg claudication due to a very rare form of atherosclerosis affecting the descending thoracic and abdominal aorta--known as coral reef aorta--without involvement of the femoro-distal vessels is reported. The patient was treated with a polyester bifurcation graft from the proximal descending aorta to both common iliac arteries via a left dorsal mini-thoracotomy and a second left retroperitoneal approach. This unusual approach was chosen instead of direct aortic replacement in order to prevent paraplegia. In case of future visceral or left renal malperfusion the diseased artery can be connected to the prosthesis directly or by the use of an additional bypass graft. This would not be the case with a conventional axillo-bifemoral graft.

Anastomosis, Surgical↗
PubMed2005

[From the primitive to the definitive aorta: angioblasts and hemangioblasts during aorta-associated haematopoiesis].

Intra-aortic haematopoiesis is a transient phenomenon, present in all the vertebrate species examined. Aorta-associated haematopoiesis produces Haematopoietic Stem Cells (HSC) that emerge from the ventral aortic endothelium through endothelial cells (EC) that switch to HSC. HSC emergence is followed by the colonization of definitive haematopoietic organs. Since intra-aortic haematopoiesis is born from EC of the aortic floor, we wondered how vascular integrity was maintained during haematopoietic production. Transplantation experiments have brought about evidence according to which two distinct endothelial lineages contribute to the embryonic vasculature. One comes from the splanchnic mesoderm and gives rise to EC and haematopoietic cells (HC). The other originates from the somite and is restricted to EC differentiation. We have used interspecific quail/chick grafts to study aortic organogenesis during the course of haematopoiesis. We demonstrate that: 1) before haematopoiesis, the aorta, originally entirely of splanchnic origin, is colonized by EC from the somite. This colonization contributes to create a new roof and sides, which are hence formed by somite-derived EC whereas the floor is contributed by splanchnopleural-derived EC; 2) as haematopoiesis proceeds, somite-derived EC begin to colonize the aortic floor and are found beneath HSC clusters; 3) after haematopoiesis, aortic hemangioblasts disappear from the endothelium and are replaced by somite-derived EC. At this stage, the whole aortic endothelium is derived from somitic cells; 4) we have identified a new cell population from the somite that contributes to the vascular smooth muscle cells (VSMC). This population appears distinct from the somite-derived EC. Using lineage tracing with non-replicative retroviral vectors, we show that EC do not give rise to VSMC as previously thought. Taken together, our results bring about new lights on aorta morphogenesis and the time-restricted production of haematopoiesis.

Aorta↗
PubMed1979

Management of ascending suture line sepsis by excision on the ascending aorta and insertion of a left ventricular apex to aorta conduit.

A new technique used in the management of infection of an aortic suture line following aortic valve replacement and subsequent episodes of severe hemorrhage resulting from suture line disruption is described. In a planned, staged procedure, a left-ventricular-apex-to-aorta conduit was inserted followed by excision of the supracoronary aortic root and ascending aorta, incorporating all infected tissue. This technique demonstrates that near total excision of the ascending aorta is possible and coronary artery flow can be maintained with only a minimal supravalvular aortic chamber.

Aorta, Thoracic↗
PubMed1985

Rupture of a thoracic aortic aneurysm after prosthetic bypass from the ascending aorta to the descending aorta in a case of congenital aortic arch hypoplasia.

An unusual case of a successfully operated ruptured thoracic aneurysm of the aorta with bleeding into the atelectatic pulmonary left lower lobe and acute occlusion of the prosthesis in a 28-year-old woman is reported. The underlying disease was congenital aortic arch hypoplasia still present following implantation of a prosthetic bypass from the ascending aorta to the descending aorta performed in 1963.

Adult↗
PubMed1992

[Successful Norwood operation for single left ventricle associated with severe subaortic stenosis, coarctation of aorta and hypoplastic aorta].

A 4 month-old boy who had double-inlet left ventricle, severe subaortic stenosis, hypoplastic ascending aorta and coarctation of the aorta revealed severe respiratory failure. An urgent Norwood operation was done. The procedure consisted of enlargement of the ascending aorta and main pulmonary artery and a systemic-pulmonary shunt using 5 mm PTFE tube. Postoperative course was uneventful.

Aorta↗
PubMed1989

[A case report of compression of right pulmonary artery and bronchus by aneurysmal dilated ascending aorta in tetralogy of Fallot--suspension of ascending aorta].

The patient was a 63-days-old boy who was admitted to our hospital because of moderate cyanosis and tachypnea. After admission, severe respiratory distress and emphysematous change of the right lung on the chest X-ray developed progressively. Echocardiogram and angiocardiogram demonstrated that a tetralogy of Fallot associated with right aortic arch and absence of pulmonary valve, and revealed remarkably dilated ascending aorta which compressed the right pulmonary artery and bronchus. Therefore, the emergency operation in that the ascending aorta was suspended to the 2nd rib was performed through a right thoracotomy. After surgery, his respiratory distress and emphysema of the right lung completely disappeared. To our knowledge, this is the 2nd reported case in which suspension of ascending aorta was successfully performed for pulmonary complication in congenital cardiovascular anomalies as this patient.

Airway Obstruction↗
PubMed1979

Seat belt aorta: acute dissection and thrombosis of the abdominal aorta.

Aortic trauma mainly involves the thoracic aorta (95%), while the abdominal aorta is infrequently involved (5%). Of growing interest is the role of seat belts in abdominal aortic injuries. Although seat belts are known to cause injuries to the abdominal viscera, they rarely produce aortic trauma. We report here an acute dissection with thrombosis of the abdominal aorta leading to complete peripheral occlusion as a result of lap-type seat belt injury. The two previously reported cases of similar injuries which resulted in incomplete occlusion are reviewed. A hypothesis for the causal mechanism of these injuries is described. The authors also stress careful follow-up of all patients with seat belt injuries since other intra-abdominal vascular injuries may be present.

Accidents, Traffic↗
PubMed1997

[Extra-anatomic bypass from the ascending aorta to the supraceliac abdominal aorta--surgical option applied to reoperation for aortic coarctation or interruption].

The optimal approach for reoperation following repair of aortic coarctation (CoA) or interruption (IAA) remains controversial. Four patients underwent extra-anatomic bypass for restenosis after repair of CoA or IAA. The age ranged from 4 to 12 years. The initial repairs for two CoA, one type A-IAA, and one type B-IAA consisted of two grafting, one subclavian arterial turning-down aortoplasty, and one subclavian flap aortoplasty. All of them underwent during infancy. Preoperative right arm systolic pressure ranged from 140 to 190 mmHg ar rest. Through a midline sternotomy and an upper laparotmy incision, an extra-anatomic bypass from the ascending aorta to the supraceliac abdominal aorta was employed using a 12 to 18 mm tube graft. All patients survived surgeries, and their hypertension markedly improved. Our experience confirms safety and effectiveness of this option in selected young patients with re-stenosis of following repair of CoA or IAA.

Aorta↗
PubMed2004

[One-staged operation for multiple aortic aneurysms of the descending thoracic aorta and abdominal aorta; report of a case].

A 66-year-old man underwent successfully on one-staged operation for aneurysms of the descending thoracic aorta and abdominal aorta. For the operation of descending thoracic aortic aneurysm, a temporary bypass was used from the proximal side of aneurysm to the distal one. The sacculer aneurismal wall of the descending thoracic aorta was repaired by patch formation using a knitted graft. Abdominal aortic aneurysm was replaced using a Gelsoft graft. The operation time was 7 hours and 35 minutes. Blood transfusion was not needed. The postoperative course was uneventful. It is suggested that one-staged operation for descending thoracic aortic aneurysm under the assist of temporary bypass and abdominal aortic aneurysm is possible.

Aged↗
PubMed1991

[Surgical treatment for aneurysms of the ascending aorta with aortic regurgitation: early and late results of simultaneous replacement of the aortic valve and the ascending aorta].

From September 1976 to January 1991, 66 patients were operated on for aneurysms of the ascending aorta with aortic regurgitation. The indication for operation was annuloaortic ectasia in 40 patients (61%) and aortic dissection in 26 (39%). Twenty-seven patients (41%) had the classical Marfan syndrome. The surgical techniques employed in this series included separate graft valve replacement (separate G/V) in 18 patients whose coronary ostia were normally placed, and composite graft replacement with coronary reimplantation (composite G) in 48 patients whose coronary ostia were displaced cephalad by the aneurysm. Nineteen patients (29%) had the concomitant operative procedures including aortic arch replacement and mitral valve repair. The early death within one month after the operation occurred in 6 patients (9.1%) comprising 2 (7.1%) in the separate G/V group and 4 (8.3%) in the composite G group. The 10-year survival rate including early death was 77% for the whole series, 70% for the separate G/V group and 79% for the composite G group. There was no significant difference in long term survival rate between the separate G/V and composite G groups. No patients required reoperation for the ascending aorta and the aortic valve in the both groups. However, six patients required subsequent operation for aneurysmal disease or dissection of the remaining thoracic and abdominal aorta. The 10-year event free rate of reoperation was 82% for the whole series, 93% for the separate G/V group and 79% for the composite G group. There was no significant difference in the reoperation event free rate between the separate G/V and composite G groups.(ABSTRACT TRUNCATED AT 250 WORDS)

Adolescent↗
PubMed1986

Aortic valve replacement in the patient with extensive calcification of the ascending aorta (the porcelain aorta).

The best management for patients requiring cardiac procedures with superimposed severe intimal atheromatous disease or medial calcification of the ascending aorta and transverse arch has yet to be established. Clamping such an aorta can produce embolization, dissection, mural laceration, and hemorrhage. Successful surgical treatment of two patients with a porcelain aorta requiring aortic valve replacement is reported. Traditional aortic cross-clamping was avoided with femoral artery cannulation, profound hypothermia, and circulatory arrest.

Aged↗
PubMed1977

Tandem coarctations of thoracic and abdominal aorta with intervening hypoplastic thoracic aorta: treatment with unilateral axillofemoral graft.

Tandem coarctations of the thoracic and abdominal aorta with an intervening segment of hypoplastic thoracic aorta were discovered unexpectedly in a 14-year-old boy brought to the emergency room for a displaced fracture of the radius. After the fracture healed, the boy's potentially dangerous anomalies were treated successfully with a unilateral axillofemoral prosthetic graft. This has remained patent for 42 months, and the boy has done well.

Adolescent↗
PubMed1995

Endoluminal repair of atypical dissecting aneurysm of descending thoracic aorta and fusiform aneurysm of the abdominal aorta.

A 62-year-old male patient was admitted with acute dissociation of the descending thoracic aorta and an infrarenal abdominal aortic aneurysm (AAA). Investigation revealed that the thoracic dissection probably had arisen retrogradely in the posterior wall of the AAA and extended superiorly to the left subclavian artery as a blind sac. Implantation of an endoluminal graft device below the renal arteries enabled simultaneous treatment of the AAA and the thoracic aortic dissection. The patient had an uncomplicated recovery. Postoperative aortography and computed tomography demonstrated normal flow through the aorta and endograft without leak of contrast into the AAA sac or the false lumen of the dissection. Contrast computed tomography 6 months after operation demonstrated that the false lumen was no longer evident.

Aortic Dissection↗