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Biomedical subjects

M Staudacher

Publications and source records attributed to M Staudacher.

At least 37 records · Page 2Linked to original sources
PubMed1991

[Embolic occlusion of arteries of the upper extremity].

Ninety-nine patients underwent embolectomy of upper extremity arteries; in 12% of the cases reoperation and in 4% amputation was necessary. Thrombosis is the cause of reocclusion of the brachial artery, based on endothelial lesions of the axillary passing into the brachial artery. At autopsy studies these andothelial lesions were verified by histological and electron-microscopical examinations in a high percentage. Therefore embolectomies should be performed very carefully by means of thin fogarty catheters. Postoperative anticoagulant therapy seems to improve the survival rate.

Adult↗
PubMed1991

[Complicated course of a compression syndrome of the popliteal artery in a 36-year-old patient].

The popliteal entrapment syndrome is an entity increasingly reported over the past few years. Anatomical variations should be considered if a localized stenosis or occlusion of the popliteal artery is diagnosed in a young, otherwise healthy individual. This case report documents a complicated course of the disease in a young man in whom diagnosis was made only after futile attempts of intraarterial lysis and dilatation at the time of a second operation. A complex crural reconstruction was necessary in order to revascularize the treatment limb.

Adult↗
PubMed1991

[Stented dilated or varicose veins as arterial bypass transplants: experimental and initial clinical results].

Dilated and varicose veins are usually not used as arterial bypass-grafts despite they are lined with functional endothelium. External support by a constrictive mesh tube could conform these veins into evenly calibrated bypass-grafts. Ovine jugular veins could be constricted from 15 to 6 mm diameter without forming folds on the inner flow surface. 6 months after implantation of 5 cm long jugular vein segments into the carotid arteries of 7 sheep the inner diameter was 19.5 +/- 3.3 mm for native veins (n = 4) and 7.6 +/- 0.8 mm for constricted veins (n = 10). Intimal hyperplasia was reduced from 0.4 +/- 0.2 mm in native to 0.23 +/- 0.07 mm in reinforced veins (p = 0.03). Mesh tube constricted varicose veins were used as bypass material in 11 infrainguinal reconstructions. All grafts were well calibrated at control angiography. External constriction by mesh tubes is a means to convert varicose veins into suitable bypass grafts.

Aged↗
PubMed1990

[Vascular surgery in Austria--report on the 21st annual meeting in Eisenstadt].

The Austrian Society for Vascular Surgery exists since 21 years. At the beginning of October 1989 she held her Annual Meeting in Eisenstadt, Burgenland, Austria. The topics of this well-attended meeting were: Surgery of the vertebral artery, the external carotid artery, and the deep femoral artery. The last scientific experiences in diagnosis and therapy, especially in surgical therapy, were reported. In the session Angiochirurgicum interesting cases, new diagnostic procedures, new vascular surgical techniques, new instruments, and new bypass-materials were introduced. Both the selected topics and the great number of attendees showed that the Austrian Society for Vascular Surgery is an up to date and active scientific association which follows this special field of surgery into its most subtle ramifications, and has proved a success compared to international standards. Active international exchange of views leads to an improvement and standardization of surgical results and is thus for the benefit of the patients.

Humans↗
PubMed1989

[The extra-anatomic bypass in the therapy of aortoiliacal occlusive disease].

The extra-anatomic bypass procedure is a well accepted alternative to direct aortoiliac reconstruction in high-risk patients or in cases of local inoperability. Between 1980 and 1987 74 patients (54 men, 20 women; mean age = 71 years, 43 to 90) underwent a total of 78 extra-anatomic reconstructions: 23 axillounifemoral, 15 axillobifemoral, 34 femoro-femoral cross-over, 4 axillo-popliteal and 2 femoro-popliteal cross-over bypasses. The operations were performed for severe claudication in 16, rest pain in 27 and gangrene in 26 patients; acute ischaemia was the indication in 6 and acute aortic aneurysms in 2 cases; in 1 patient there was an infected bifurcation graft. At a median follow-up time of 11 months the secondary patency rates for axillofemoral and femoro-femoral cross-over bypasses are predicted to be 75%, 71% and 62% after 1, 3 and 5 years, respectively (Kaplan-Meier estimate); on exclusion of vein and composite grafts, the patency rate increases to 79%, 75% and 65%, respectively. Femoro-femoral cross-over grafts seem to produce better results than axillounifemoral grafts (86% versus 77% at 3 years; logrank p greater than 0.05). The patency of the superficial femoral artery providing good run-off conditions, an appropriate technique for performing the anastomoses and adequate choice of graft material appear to improve the results.

Adult↗
PubMed1989

[Infrarenal aortic aneurysm: results of surgical treatment].

Between 1976 and 1987 93 patients with an infrarenal aortic aneurysm underwent surgical correction. In 62 patients the procedure was performed electively, whilst 13 displayed an unstable aneurysm and in 18 cases a ruptured aneurysm was present at operation. During the past 5 years the mortality was lowered to 2% in elective cases, whereas in cases of ongoing rupture only moderate improvement took place. The most frequent cause of a lethal outcome was pump failure of the heart (6 times), followed by renal insufficiency and haemorrhagic shock and bleeding complications. Among the non-lethal complications, relaparotomy on the basis of postoperative bleeding ranks first, followed by pulmonary insufficiency, peripheral emboli and partial ischemia of the spine. Resection of infrarenal aneurysms should be performed in the stable state of disease, since insufficiency of multiple vital organ systems increases the mortality by up to 20 fold.

Aged↗
PubMed1989

[Small parietal thrombi in artificial bypass grafts].

During the last five years, 51 femoro-popliteal polytetrafluoroethylene grafts were implanted in patients in the Second Surgical University Clinic, Vienna. In four of these patients an angiogram performed shortly after operation showed numerous small parietal thrombi on the artificial graft, a review of the literature has not shown any similar reports. The clinical importance and consequences of this observation are discussed.

Aged↗
PubMed1989

[Lincomycin therapy of streptococcal and staphylococcal mastitis in cattle].

Lincomycin has a good influence on mastitis caused by gram positive bacteria especially streptococci and staphylococci. Applied parenterally lincomycin is very toxic. Therefore it is not a regular therapeutic drug. The tubes for intramammary application are completely non-toxic. Lincomycin is very useful for treating dairy herds with galt mastitis.

Animals↗
PubMed1985

[Defects in the prostaglandin system. II. Familial platelet-prostacyclin receptor defect (Wien-Hietzing defect)--pathogenetic significance for (early) development of atherosclerosis?].

A case is reported of a 10 year-old girl admitted to hospital because of severe intermittent claudication. Occlusion of the left popliteal artery was diagnosed. Since successful surgical intervention the patient has been symptom-free. No causative factor was detected for this premature occlusion. During intensive laboratory check-up an extreme diminution in sensitivity of the platelets to prostacyclin and a receptor defect were discovered. This defect seems to be genetically determined. The extent to which this as yet unreported platelet defect might have contributed to the development of atherosclerosis at such an early age is discussed.

Arteriosclerosis↗
PubMed1983

[Gallstone ileus].

15 cases of gallstone ileus were seen during the period 1951-1981 at the 2nd Surgical Department of the University of Vienna which makes up 1,3% of a total of 1 162 cases of ileus during this time period. A review of this condition is warranted, because of the variability of clinical symptoms, the difficulty of establishing a diagnosis based on clinical and radiological findings, and because of letality (26%) in our patient group. Care has to be taken not to overlook air in the bile ducts on abdominal x-ray; the possibility of a gallstone ileus has always to be considered especially in cases with a history of cholelithiasis. Surgical therapy consists in enterotomy, removal of the stone and drainage. Closing of the fistula usually is unnecessary since in most cases the fistula tends to occlude spontaneously.

Cholelithiasis↗