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K Prenner

Publications and source records attributed to K Prenner.

At least 19 recordsLinked to original sources
PubMed1994

The value of obturator canal bypass. A review.

OBJECTIVE: To review the value of obturator canal bypass with respect to long-term results. DESIGN: Case series and literature review. SETTING: University of Vienna Medical School in Austria. PATIENTS/METHODS: Personal experience with 34 consecutive patients and 125 cases published since 1982 with respect to patient data, patency, and survival are compared and jointly analyzed retrospectively. INTERVENTIONS: Patients received obturator canal bypass for lesions of the pelvic or common femoral vessels precluding orthotopic reconstruction. MAIN OUTCOME MEASURES: The rates of patient survival, limb salvage, and graft patency were analyzed. RESULTS: The postoperative mortality rate in the present series was 14.7%. The limb salvage rate after 5 years was 76.5%. One- and 5-year secondary patency rates were 75.3% and 54.9%, respectively. All grafts in patients without atherosclerosis were patent at a median of 34 months. For 57 cases documented in the literature, 1- and 5-year patency rates were 70.8% and 59.7%, respectively. Combined analysis of 90 obturator canal bypasses revealed rates of 72.7% and 56.9% of patent grafts at 1- and 5-years, respectively. CONCLUSIONS: The use of obturator canal bypass is recommended in deep groin infections and especially in patients with lesions of the pelvic vessels due to other occlusive vascular disease.

Aged↗
PubMed1992

[Immediate and late results following endarterectomy of the carotid bifurcation].

In a retrospective study we analysed two groups each consisting of 100 consecutive patients of similar age and sex distribution who underwent surgery for carotid disease with an intervening period of 5 years (group A 1980/82, group B 1986/87) between the collectives. Against a background of changing indications, tactics and techniques the aim of the study was to detect any differences between the two groups. Group A had a higher proportion of coronary and peripheral vascular disease. The states of cerebral ischemia I, II and III were distributed equally, but state IV was seen more frequently in group B (p less than 0.05). The number of shunt/without shunt operations in group A was 97/2, in group B 10/84 (p less than 0.005). The external carotid artery was deobliterated in 58/81 cases group A versus group B (p less than 0.005). We closed the artery by direct suture in 8/31 (p less than 0.005), by autologous venous patch in 53/26 (p less than 0.005) and by Dacron patches in 39/41 patients. In group A the operative mortality was zero and in group B 1 patient died; one patient in group B developed sudden occlusion (with TIA) postoperatively. Transient intra-/postoperative neurological deficits occurred in 1/2, permanent in 4/2 patients (n.s.). 54/25 patients have died up to 31/08/91. Coronary heart disease was the main cause of late complications and deaths in group A (p less than 0.025). Statistically, there was no dependence of neurological deficits on group, sex, age or intraoperative management. Only patients with preoperative PRINDS hat a higher postoperative neurological deficit rate than the others.

Adult↗
PubMed1992

[Intra-abdominal compartment syndrome as a rare complication after aortic reconstruction].

An intraabdominal compartment-syndrome developed due to ischemia and hemorrhage through a suture subsequent to partial reconstruction of the abdominal aorta, aorto-mesenterical and bilateral aorto-renal T-bypass. In order to decrease the elevated intraabdominal pressure, a decompression with secondary wound closure by an artificial net is the therapy of choice. The arising problems which determined the fatal outcome of this case are discussed.

Aged↗
PubMed1990

Acute carotid artery occlusion--operative or conservative management.

64 ischemic stroke patients with angiographically verified occlusion of the internal carotid artery were studied. 32 patients underwent surgical revascularization in the acute stage within a few hours of acute onset of stroke. 32 patients had conservative management of treatment. Both groups were compared in regard to mortality rate, functional recovery and clinical findings or neurological deficits and psychiatric disturbances on admission and 4 weeks later. Correlations of functional recovery between the two groups showed no significant differences. Mortality rate in the conservatively managed group however was significantly lower than in the operative group.

Aged↗
PubMed1987

Transluminal angioplasty versus conventional operation in the treatment of haemodialysis fistula stenosis: results from a 5-year study.

In this retrospective study we have used life table analysis to compare the results of 37 transluminal angioplasties with those of 37 conventional operations (thrombectomy, thrombendarterectomy with/without grafting, bypass) in the treatment of stenoses and occlusions of haemodialysis fistulae. There was no difference between the groups in terms of lesion morphology or the patients' age and sex. Cumulative patency rates for angioplasty and surgery, respectively, were 94.5 and 78.1 per cent after 1 week, 72.3 and 64.1 per cent after 1 month, 41.2 and 28.9 per cent after 5 months and 31.3 and 19.3 per cent after 1 year (X2 test, P less than 0.001). The difference is due mainly to a high percentage of early occlusions in the haemodialysis fistula stenoses is possible it achieves results which are at least as good as those of operation.

Actuarial Analysis↗
PubMed1983

[3 years' experience with intraoperative transluminal angioplasty--a retrospective study].

From 1980-1982 45 transluminal angioplasties were carried out intraoperatively (ITA) in 42 patients with a mean age of 59 years for the improvement of the inflow or outflow in connection with conventional reconstructive techniques (n = 26), as angioplasty alone with surgical exposure of the arteries for introduction of the catheter material (n = 10) and after thrombectomy for elimination of the cause of occlusion (n = 9). The pelvic vascular bed was dilated eight times, the femoropopliteal vessels 30 times and a stenosed hemodialysis shunt was dilated five times. Intraoperatively, perforation occurred once in the pelvic region. Four occlusions (1 X pelvis, 3 X femoropopliteal) could not be passed with instruments. In 8.8% immediate occlusions always occurred femoropopliteally. The causes were vessel wall dissection and calcification. One patient died for cardic reasons 14 days postoperatively. We saw one recurrent occlusion in the postoperative observation period of 9.7 months (0.5-28 months), also in this case in the femoral region. Since all recurrent occlusions occurred femoropopliteally in this region the indication for ITA must be made strictly. The dilatation of the pelvic arteries displays good long term results with a slight risk and should even be used intraoperatively as the treatment of first choice in the presence of appropriate morphology.

Adult↗
PubMed1982

[Peripheral vascular surgery in the high-risk patient].

In peripheral vascular surgery a patient not infrequently becomes a high-risk case on account of local causes (morphological, haemodynamic), especially during long operations. Hence, low-risk procedures like partial or palliative operations, including extraanatomical procedures, and appropriate anaesthesiological methods are very important. This report includes several possibilities of peripheral arterial reconstruction, as well as a review of experience gained in 37 axillo(bi)femoral and 54 cross-over bypasses, 41 closed retrograde TEA's of the iliac region, 30 transluminal dilatations, 580 embolectomies, 257 reconstructions of the deep femoral artery and 19 in situ vein bypasses (Hall). The distribution of extraanatomical procedures in a high-risk and a local or angiological-morphological situation showed that after one year only 50% of high-risk patients were still alive compared with 85% of the latter group. Local anaesthesia was very suitable for embolectomies, whilst for other indications we prefer spinal and peridural or combined regional and general anaesthesia, with the proviso that the patient is in the hands of a skilled anaesthesiologist.

Amputation, Surgical↗
PubMed1979

Renal arterial thrombosis after the contralateral removal of a pelvic kidney.

In a 19-year-old female a pelvic kidney, on the left side, was removed because of recurrent urinary tract infections, severe abdominal complaints and a pathological isotope-nephrography. Following nephrectomy a severe uremia with cerebral edema and pneumonia developed based on a medial necrosis of the artery of the right kidney. After surgical correction the function of the right solitary kidney returned to normal.

Adult↗