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[Surgery of subrenal aneurysms in the abdominal aorta and retroaortic localization or the left renal vein].

The presented work is only a minor contribution to the extensively elaborated method of surgical treatment of subrenal aneurysms of the abdominal aorta, informing on the unusual pattern of important anatomical structures in the surgical field involving the retroaortal localization of the left renal artery which runs closely dorsally behind the proximal neck of the aneurysm. The incidence of major venous anomalies which are associated with the aortal section and which include in particular the circumaortal left renal vein (circumaortal annulus) left-sided transposition of the lower vena cava or its duplicity and preaortal connection of iliac veins amounts according to data in the literature to 5.6% [1], a left renal vein 2% [18] and the incidence of these anomalies in surgery of the abdominal aorta is 0.8% [3]. The presence of the anomaly we encountered was detected already before surgery due to the careful evaluation of the spiral CT and called for a change of the usual surgical technique because of the risk of injury of the renal vein during construction of the proximal anastomosis by the usual inclusion technique from the inside of the aneurysm. A more extensive release of the proximal cervix of the aneurysm was necessary with isolation of the adjacent ventral portion of the left renal vein, complete transverse severing of the aorta at the level of the proximal cervix and direct end to end suture of the proximal anastomosis. This case-history draws attention to the possibility of venous malformations which may make the course of surgery on the abdominal aorta difficult and draws attention to the importance of CT examination during elective operations of aneurysms of the abdominal aorta.

Aortic Aneurysm, Abdominal↗

Salmonella cholerasuis bacteremia and mycotic aneurysm of abdominal aorta--report of five cases.

From August 1986 to October 1987, there were 5 cases of primary mycotic aneurysm of the lower abdominal aorta in Chang Gung Memorial Hospital at Kaoshiung. All patients were proved to have Salmonella cholerasuis (Sal. chol.) septicemia by blood culture. The ages ranged from 60 to 80 years old, the mean age was 71.6 years old. The male to female ratio was 4 to 1, 3 patients had diabetes mellitus (DM) and 3 had hypertension. The duration of symptoms lasted from 1 week to 2 months before diagnosis. Clinically, all patients had sepsis with fever, chills, leucocytosis, and complained of pain in the lower abdomen (80%), at flank (20%) or low back (20%). Abdominal tenderness was present in 3 (60%). Two patients underwent surgery, 1 expired during the operation, the other expired 1 month after operation because of retroperitoneal abscess and sepsis. Three were discharged in septic shock and expired within 1 day. The mortality rate was 100%. The diagnosis of complicated aneurysm of the lower abdominal aorta was established in all by computed tomography (CT). In conclusion, when there are clinical manifestations of sepsis, positive blood culture for Sal. chol., and pain or tenderness in the lower abdomen, flank area or back, one should consider the possibility of mycotic aneurysm of the lower abdominal aorta. Although the prognosis is poor, early surgical intervention may improve the outcome. And the diagnosis is best established by CT.

Aged↗

[Successful surgical repair of acute DeBakey type I aortic dissection complicated by acute occlusion of the suprarenal abdominal aorta].

We reported a case of acute DeBakey type I aortic dissection presented with occlusion of the suprarenal abdominal aorta, who was successfully treated by simultaneous graft replacement of the ascending aorta and total aortic arch. The patient was a 68-year-old man who complained of chest pain and symptoms of acute arterial occlusion of bilateral lower extremities, and who had consciousness disturbance due to stroke caused by aortic dissection. He underwent simultaneous graft replacement of the ascending aorta and total aortic arch under selective cerebral perfusion during an emergent operation. For reconstruction of the arch vessels, we used three separate grafts that were connected to the aortic prosthesis before use. Although postoperative course was complicated by myonephropathic metabolic syndrome, the patient subsequently recovered and was discharged on foot. Early vascular reconstruction and appropriate management of reperfusion injury are extremely important in the setting of malperfusion phenomena complicating acute aortic dissection.

Aged↗

[Hypoplasias of the thoracic and abdominal aorta: presentation of two cases, with evaluation 11 and 20 years after surgical management].

Two cases of hypoplasia of the thoracic and abdominal aorta are reported, diagnosed in two individuals, a girl 13 years old and a boy aged 16 years. The malformation involved the upper abdominal aorta and the visceral arteries in the first case, and simply the descending thoracic aorta in the remainder. Arterial hypertension was the principal manifestation who lead to the diagnosis, which was confirmed through the conventional angiography. Both patients underwent surgical management, which consisted in the aortic revascularization associated to complete visceral revascularization in the first case, and in the single aortic revascularization in the second patient. Surgical therapy course was uneventful in both cases and blood pressure returned to normal values following the operation. Reviewed 11 and 20 years after the procedure, they were found in good condition, with normal blood pressure without any medication; angio CT studies disclosed the prosthetic grafts working in excellent condition. The main features of etiopathogeny, clinical presentation, diagnosis and surgical management are subjected to a discussion, based on an extensive review of the literature dedicated to this clinical entity.

Adolescent↗

[A case report of ascending-abdominal aorta bypass in the treatment of atypical coarctation].

A 45-year-old woman, who had atypical coarctation of the aorta due to aortitis syndrome, underwent ascending-infrarenal abdominal aorta bypass successfully. A woven dacron prosthesis of 14 mm in diameter was anastomosed to the ascending aorta. The course of the graft arranged to pass through a hole cut into the diaphragm across the omental sac behind the pancreas to the infrarenal abdominal aorta. This operation is approached through a midline sternal-splitting and abdominal incision, accordingly pulmonary complication and injury to major collateral vessels associated with lateral thoracotomy can be avoided.

Anastomosis, Surgical↗

Occlusion of abdominal aorta in the newborn.

This is a report of a case of primary occlusion of the abdominal aorta in the first day of life that was managed operatively. Thromboembolic occlusion of the abdominal aorta is a surgical emergency. When promptly recognized and managed with arteriotomy and thromboembolectomy, morbidity and mortality should significantly decrease.

Aorta, Abdominal↗

Low-velocity gunshot injury of the abdominal aorta managed by debridement and re-anastomosis. A case report.

Penetrating injuries to the abdominal aorta are highly lethal despite increasing numbers of reports of successful treatment. A case of survival after a 0,25-calibre gunshot wound of the abdominal aorta is presented. The patient, a young male, also had associated injuries to the liver, stomach and jejunum. He was managed by vigorous resuscitation, emergency laparotomy, aortic debridement and end-to-end re-anastomosis. He was discharged from hospital on the 12th postoperative day.

Adult↗

Percutaneous transluminal angioplasty of the distal abdominal aorta and its bifurcation.

Percutaneous transluminal angioplasty (PTA) of stenotic lesions in the distal abdominal aorta and its bifurcation was performed in 14 patients, 6 of whom were women. The stenotic segment in the aorta or aortic bifurcation was usually the only significant lesion. The double-balloon technique was used in 12 patients via bilateral femoral artery catheterizations. In 2 other patients with aortic lesions, a single large balloon sufficed. Good results were achieved in all but 1 patient, with minor complications occurring in 3 instances. The follow-up period varied from 6 months to 5 years. We believe that PTA is the procedure of choice in treating localized lesions of the distal abdominal aorta and its bifurcation, especially when distal vessels are relatively uninvolved.

Adult↗

[Modulation of electrical and contractile responses of the isolated abdominal aorta in hyperholesterinemia and after treatment with calcium antagonists].

Membrane potential of aorta's endothelium, contractile responses of isolated preparation of the abdominal aorta and their modulation with calcium antagonists were studied at hypercholesterinemia (HHS). Membrane potential has been observed to be slightly depolarized at HHS, and acetylcholine-induced electric and contractile responses were shown to be depressed. Calcium antagonists had positive effect on MP, electric and contractile responses of the preparations of the abdominal aorta of rats with HHS. The most pronounced protective effect of membrane potential and contractile responses at HHS was observed in rats after asparcam using.

Animals↗

Severe hypoplasia of the abdominal aorta and its branches in a patient and his daughter.

We report the history of a patient and his daughter, both affected with hypoplasia of the abdominal aorta and its branches, leading to early and dramatic complications. In the index patient, renal ischaemia as a result of severe hypoplasia of the abdominal aorta and the origin of renal arteries led to progressive renal failure and end-stage renal disease at the age of 32 years. Other vascular abnormalities included hypoplasia of the celiac trunk (CT) and superior mesenteric artery (SMA). After a successful kidney transplantation at the age of 40 years, he eventually deceased following an episode of possibly ischaemic acute pancreatitis at 47 years. The patient's daughter suffered from an haemorrhagic stroke at the age of 7 years, which led to the discovery of severe hypertension caused by bilateral narrowing of renal arteries, as well as hypoplasia of CT, SMA, subclavian and pulmonary arteries. Biopsy of the narrowed renal artery of the daughter showed a particular form of fibrodysplasia characterized by an unusual fibrosis of the inner part of the media, just beneath the internal elastic lamina. To our knowledge, this is the first report of familial hypoplasia of the abdominal aorta. It might be the cardinal manifestation of a familial form of fibromuscular dysplasia (FMD). Interestingly, the histological lesions described in the daughter's renal artery differ from the classical form of medial FMD.

Abnormalities, Multiple↗