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Biomedical subjects

B Faidutti

Publications and source records attributed to B Faidutti.

At least 19 recordsLinked to original sources

Aortoiliac endarterectomy: a 9-year experience.

Thirty-two patients (median age: 51 years) underwent aortoiliac endarterectomy between 1982 and 1990, for disabling claudication (27), rest pain (3), and tissue loss (2). There was no post-operative death and morbidity affected 6 patients. Five patients showed insufficient or suboptimal vascularisation of a limb which justified early reoperation in four. Follow-up was obtained in 31 patients with a median time of 36 months (6 months to 8 years). Five patients experienced recurrence of claudication symptoms: two received an aortofemoral bypass at 6 and 36 months. In the other patients, distal arterial occlusive disease accounted for recurrence alone (2 patients) or in association with aortoiliac involvement (1). Technical problems or disputable indications were responsible for postoperative failure in 3 cases or early recurrence of symptoms in 2. Cumulative patency rates of aortoiliac endarterectomy were 94 and 90 per cent at 2 and 5 years, and actuarial rates of clinical improvement were 90 and 82 per cent at 2 and 5 years, respectively. Aortoiliac endarterectomy provides the advantages of avoiding foreign material. The success of this reconstruction depends on strict criteria of selection and surgical expertise. It is indicated for the relatively young patient with nonectasic disease where atherosclerosis has not attacked the external iliac arteries.

Adult

[Aortoiliac occlusive disease: yesterday and today].

The surgical management of aortoiliac atherosclerotic occlusive disease includes endarterectomy and prosthetic by-pass in either the anatomical or extraanatomical position. Aortoiliac endarterectomy is only indicated in localized disease which spares the external iliac artery and does not exhibit aneurysmal changes. Prosthetic by-pass is easier to perform, but carries graft-related risks including anastomotic pseudoaneurysms in 5 to 10% of cases at 10 years. Extraanatomical shunts are performed when there are general or abdominal contraindications to an anatomical by-pass. Simultaneous revascularisation of the aortic visceral branches mainly involves the renal, inferior mesenteric and hypogastric arteries. Correction of celiac and superior mesenteric artery stenosis is less frequently indicated. The appropriate approach and surgical technique depend on the artery and the lesion involved. Suprarenal implantation of aortoiliac by-passes is performed at the celiac, descending aortic and ascending aortic levels. Indications include suprarenal coarctation of the aorta, reoperation following ligature of the juxtarenal aorta, and some cases of extensive thoracoabdominal atherosclerosis. The surgical management of aortoiliac occlusive disease in 353 patients treated in our clinic between 1976 and 1986 is reported. Mean follow-up exceeded 5 years. Operative mortality for endarterectomy (15 patients) was nil, and was 3.9% for by-pass graft. Early complication rate was 6.5% and late complication rate 23.2%. Half of the late complications were due to progression of the atherosclerotic process. Pseudoaneurysms at the aortic (3.1%) and femoral (9.9%) levels occurred between the fifth and tenth years. Prosthesis infection occurred shortly after operation in 3 patients and much later in 2 patients.

Anastomosis, Surgical

[Tetralogy of Fallot: results of 77 hemodynamic controls after complete correction].

77 patients (representing 91% of all survivors) underwent catheterization within 5 months of surgical repair of tetralogy of Fallot. The data show that residual pulmonary gradient is significantly higher in patients with infundibular and valvular stenoses than in patients with infundibular stenoses only, whereas the method of intracardiac repair (patch) had no influence on residual gradient. Significant pulmonary insufficiency was found almost exclusively when a patch was extended through the pulmonary annulus. Hemodynamic results were excellent in 37% of cases, good in 51%, satisfactory in 3% and unsatisfactory in 9%. Finally, primary intracardiac repair in children below 4 years of age yielded excellent or good results in all cases: this suggests that toal correction should be performed without previous aorto-pulmonary anastomoses in this youngest group of patients.

Cardiopulmonary Bypass

[Permeability of venous aortocoronary bypass 5 years later].

47 consecutive patients who had undergone aorto-coronary venous bypass surgery (mean: 1.6 graft per patient) have been investigated after a mean follow-up period of 5 years and 9 months (range: 44-108 months). 52 grafts out of 73 were found to be patent (71 p. 100), the best patency rate being shown by grafts on the LAD artery (27/32 = 85 p. 100). Long-term graft patency may be associated with an improved left ventricular ejection fraction; 77 p. 100 of the total patients experienced a lasting clinical benefit from the operation.

Adult

[Pulmonary valvular subatresia with intact interventricular septum in a newborn infant: role of prostaglandins in the immediate postoperative period].

The case is reported of a newborn with pulmonary valvular subatresia and intact interventricular septum and moderate right ventricular hypoplasia, treated with pulmonary commissurotomy alone. In the immediate postoperative period the ductus arteriosus closed, resulting in deep hypoxia and acidosis. With the infusion of PG E2 the ductus reopened and the baby's condition improved markedly. The ductus was kept open for 20 days, during which time adaptation of the right ventricle must have occurred. Indeed, after definitive spontaneous closure of the ductus, right ventricular output proved sufficient to insure satisfactory pulmonary perfusion.

Ductus Arteriosus

Surgical techniques.

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Coronary Artery Bypass

[Complete surgical correction of congenital cardiopathies in infants].

The results of total correction of congenital heart defects in the first year of life are presented. Overall surgical mortality in these generally highly symptomatic infants was 35%. The surgical risk is mainly related to the type of defect: mortality is low (10%) in uncomplicated septal defects and in transpositions of the great vessels, higher in the coarctation syndromes (30%), and considerable in complex heart defects. The weight of the infant seems to be another factor, surgical mortality being high when the patient's weight is less than 4.5 kg. Indications for palliative operation or total repair are discussed on the basis of the presented results.

Aortic Coarctation

[Function improvement in levography following aortocoronary bypass].

Actively contracting segments, preoperatively akinetic, were found in 8 of 63 patients, evaluated 6-12 months after aortocoronary surgery by coronary angiography. Ejection fraction was increased from 48.1% (S.D. 15.7) to 68.3% (S.D. 11.4). These patients are characterized by two simple clinical parameters: 1. All patients had angina pectoris at rest or at minimum exercise except for one; 2. preoperatively, there was a discrepancy between severe ventriculographic and discreet Ecg findings. These findings prove that myocardial function in coronary artery disease can be impaired at rest by ischemia, without clinical signs of coronary insufficiency, such as angina pectoris. Even severe impairment of left ventricular function is no contraindication for coronary artery surgery, if caused by reversible myocardial ischemia.

Adult