[Renal failure in surgery of abdominal aorta aneurysms].

The authors analyse the experience in operations for resection of an aneurysm of the abdominal aorta in 70 patients, which were performed at the Vishnevsky Institute of Surgery, AMS of Russia, from 1983 to 1991. Preoperative examination revealed renal insufficiency in 8 (11.4%) patients.

[Evaluation of cerebral hemodynamics by transcranial Doppler ultrasonography in carotid endarterectomy].

The authors studied the linear blood flow rate (LBFR) in the middle cerebral artery (MCA) which was measured by means of transcranial dopplerography during carotid endarterectomy in 25 patients. Analysis of the results showed that the changes of LBFR in the MCA correlate with alterations in blood pressure: LBFR in the MCA reduced most during compression of the common carotid artery in patients with considerable affection of the contralateral carotid artery. The maximal increase of the blood flow during compression of the common carotid artery occurred when the initial LBFR in the MCA was lowest.

[Evaluation of reserve potentials of the heart in diseases of the abdominal aorta in middle aged and elderly patients].

By the method of radionuclide ventriculography on the nuclear stethoscope, 106 patients at the age of 60-84 years with occlusive lesions (64) and abdominal aortic aneurysm (42) were examined. After preoperative therapy, 48 patients underwent resection of the abdominal aortic aneurysm with grafting, 41--aortofemoral shunting. Three (7.

[Computerized tomography in aortic aneurysms].

Experience with computerized tomography, used for the diagnosis of aortic aneurysm, is summarized. This diagnostic method is shown, on the basis of 137 cases, to be highly valuable for this pathology. The results of computerized tomography were compared to postoperative data, which demonstrated high accuracy in the measurement of the size of aortic aneurysm.

[Reconstructive vascular surgery in patients with diabetes mellitus].

Presented are the literature data and original research findings in management of atherosclerotic occlusions of major arteries in diabetic patients. Reconstructive surgery in diabetes results in significant anti-ischaemic effect, gangrene localization, and trophic ulcer healing saving these patients from invalidism and prolonging their life.

[Indications for cerebral revascularization in patients with combined occlusive diseases of the renal and extracranial arteries].

The authors have performed a complex ultrasonic angiographic and nephrological examination of 32 patients with associated occluding injuries of branches of the arch and renal arteries. The indications and tactics of reconstructive interventions on renal arteries in patients with pathology in question have been established which were not followed by neurological complications. All the patients who survived have shown substantial improvement of neurological symptoms.

[Volume load in the evaluation of functional reserves of the heart in reconstructive surgery of the abdominal aorta and its branches].

A review of the results of volume load tests, carried out in the presence of intracardiac hemodynamic monitoring in 19 patients with abdominal aortic diseases and attendant coronary heart disease, has demonstrated that the productivity curve slope and left-heart pumping coefficient are the most valuable criteria for the assessment of cardiac functional reserve. Volume load tests identified 12 patients with limited functional reserve of the heart as being in need of continuous intra- and postoperative inotropic support and pre- and poststress control in the presence of central hemodynamic monitoring.

[Evaluation of pump function of the heart in patients with occlusive diseases of the abdominal aorta and ischemic heart disease based on radionuclide ventriculography].

Altogether 56 patients with occlusive abdominal aortic lesions and concomitant CHD were examined by radionuclide ventriculography on a nuclear stethoscope. Suppression of left ventricular systolic and diastolic function was noted in the patients with CHD and arterial hypertension. Investigations of cardiohemodynamics using the above method made it possible to identify patients with limited functional cardiac reserve, to predict possible myocardial complications, and to take preventive measures before, during and after reconstructive interventions on the abdominal aorta.

[Radical operation technic in aneurysm of the infrarenal portion of the abdominal aorta].

The report is based on the experience with surgical treatment of 126 patients having aneurysm of the abdominal aorta. The average age of the operated patients was 60. The technic of radical surgery in aneurysm of infrarenal portion of the abdominal aorta is described, as well as the methods employed.

[Indications and contraindications for surgical treatment of abdominal-aortic aneurysm].

An analysis of 176 patients with aneurysms of the abdominal aorta is presented, 125 of these patients having been operated on (the average age was 60 years). The presence of an aneurysm of the abdominal aorta, irrespective of its dimentions and nature of clinical manifestations, serves as an indication for surgery, provided the following contraindications are absent: severe state of the patient, fresh myocardial infarction, cardiac lesions with circulatory insufficiency of stage II B or III, fresh haemorrhage to the brain, hepatic and renal lesions with azotemia, atherosclerotic occlusion of vessels in the lower extremities with a complete block of all major vessels.

[Surgical treatment of occlusive diseases of visceral branches of the abdominal aorta].

Sixty two patients having chronic circulatory disorders in visceral branches of the abdominal aorta were operated upon by the authors. An adequate circulation was restored as a result of reconstructive (44), conventionally reconstructive (14) and palliative (4) operations. A number of technics considerably facilitating these complicated reconstructive procedures are described: transaortic endarterectomy from the abdominal aorta, visceral branches and renal arteries: resection of the thoracoabdominal aorta followed by a plastic reconstruction of the celiac trunk ostium and others.

[Surgical treatment of aneurysm of the abdominal aorta and its branches].

A total of 168 patients with aneurysms of the abdominal aorta and of its branches were examined, 117 of them were operated on. The leading method of surgery for abdominal aorta aneurysms consists in a resection of the aneurysm and its subsequent prosthetic repair. The choice of the operative technique for the aneurysms of the visceral branches and renal arteries depends on the localization and size of the aneurysm, on the importance of the diseased vessel in the blood supply to the digestive organs, as well as the organ which blood supply is impaired.