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PubMed1985

[Comparative study of 3 implanted micrografts placed in the abdominal aorta of the rat].

A comparative study was conducted on three micrografts of 2 mm diameter: a frozen umbilical artery, a bovine heterograft and an inert P.T.F.E. material graft. These were implanted in the infrarenal aorta of 158 Wistar rats. Each graft was examined on eight occasions: after 4, 24 and 48 hours, one and two weeks, and 1, 2 and 6 months. Excluding 46 animals that died within 24 hours, the overall permeability rate for all grafts was 87.7% (88.9% for umbilical arteries, 82.8% for bovine heterografts and 85.4% for P.T.F.E.). All grafts were examined by optical and electron microscopy. The inert material showed excellent parietal stability. In contrast, alteration and resorption of the primary matrix were moderate in extent for bovine heterografts, and major for frozen umbilical arteries which appear to be a very unstable grafts.

Animals↗
PubMed1985

[Changes in the blood surface-active properties during the correction of hemorheological disorders in patients with occlusive lesions of the abdominal aorta and arteries of the extremities].

Significant hemorheologic disorders were demonstrated in 68 patients with Leriche's syndrome and 50 patients with Raynaud's disease, as compared to 42 normal controls. Plasma and erythrocyte membrane surface tension (ST) was measured, using a surface balance, in 29 patients with Leriche's syndrome, 26 patients with Raynaud's disease and 24 normal subjects. In both kinds of vascular abnormality, major parameters of erythrocyte membrane adsorption film ST remained unchanged, yet the areas of their adsorption hysteresis loops increased. In patients with Raynaud's disease, the minimal plasma ST increased, while the stability index and the hysteresis loop area declined. In patients with Leriche's syndrome, those were unchanged. The control of hemorheologic disorders by moderate hemodilution using albumin, rheopolyglucin, antiaggregants and fibrinolytic agents resulted in the normalization of plasma ST parameters in Raynaud's disease, and a greater hysteresis loop area in both kinds of vascular disease. Major parameters of erythrocyte membrane adsorption film ST remained unchanged, while the area of their hysteresis loops decreased.

Adult↗
PubMed1985

[Simultaneous intervention on the carotid artery, abdominal aorta and their branches].

A simultaneous approach to revascularization for combined coronary and carotid disease today is well accepted. The discussion about combined procedures of carotid and aortoiliac occlusive disease is still going on. We operated upon 3 patients, aged 63,56 and 65 years, who suffered from carotid, aortoiliac and renal artery disease. Main symptoms were hypertensive crisis with pulmonary edema and intermittent claudication. Dizziness, transient ischemic attacks and slight renal insufficiency were present in two, one and two patients respectively. After recompensation a simultaneous operation was performed: carotid endarterectomy with inlying shunt, reconstruction and patch-plasty of the renal arteries and implantation of a aortofemoral artery bypass graft. Postoperative complications: hypertensive crisis, low output syndrome and oliguria (1 pt.) and deep vein thrombosis (1 pt.) could be treated conservatively. 10 and 12 months later the patients are symptom-free except one, who suffers from angina NYHA II. In conclusion we recommend carotid endarterectomy simultaneously with any major vascular procedure, if a critical stenosis is visualized to improve long-term survival in addition to reducing operative mortality.

Angiography↗
PubMedDate not supplied

[Aneurysms of the abdominal aorta. Fissures in the vena cava. Apropos of 4 cases].

Four cases of aortico-caval fistulae of atheromatous origin have been treated over a period of 5 years, a frequency (4.8%) much higher than that reported in the international literature. Diagnosis in each of these 4 cases was suggested by clinical features associating signs of a complicated aneurysm with those of a high-output arteriovenous fistula, angiography showing the arteriovenous communication in one patient only. Treatment of choice is by graft to aneurysm sac and suturing of fistula by an endosaccular approach. Prognosis is much more favorable (mortality 25%) than that of rupture into the free peritoneum (mortality 77,4%).

Aged↗