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Biomedical subjects

R Uflacker

Publications and source records attributed to R Uflacker.

At least 55 records · Page 3Linked to original sources
PubMed1980

Resolution of mesenteric angina with percutaneous transluminal angioplasty of a superior mesenteric artery stenosis using a balloon catheter.

A case of resolution of mesenteric angina is reported with percutaneous transluminal angioplasty of a superior mesenteric artery stenosis, using the Grüntzig technique with a balloon catheter. Technical aspects are described. Short-term follow-up reveals symptomatic relief, disappearance of the abdominal bruit, and normalization of d-xylose absorption.

Angina Pectoris↗
PubMed1980

Percutaneous transhepatic portography for obliteration of gastroesophageal varices in partial and total portal vein occlusion.

The obliteration of gastroesophageal varices was attempted with percutaneous transhepatic portography in seven patients who had partial and total portal vein occlusion. The procedure was successful and stopped variceal bleeding in three patients. In three cases only portography was performed, and in another patient the examination was not possible. The possibilities of this new treatment for bleeding in portal vein thrombosis are discussed and the problems encountered in performing the examination are presented.

Adolescent↗
PubMed1978

The behavior of collateral circulation after coronary artery bypass surgery.

The changes in coronary collateral circulation after bypass surgery were analyzed in 50 patients with coronary disease. The demonstration of collateral circulation was found to be dependent upon the severity of the coronary heart disease and the patency of the bypass. When the graft was patent, it was usually not possible to visualize the collateral circulation demonstrated preoperatively. When the bypass was occluded, the same collateral circulation as before surgery was frequently found.

Collateral Circulation↗
PubMed1978

Effect of meglumine metrizoate and metrizamide on the microcirculation. Animal experiments.

Physiologic saline, meglumine metrizoate (Isopaque) and metrizamide (Amipaque) were injected into the ear artery of Wedder rabbits. The effect on the microcirculation in previously inserted ear chambers was recorded by cinematography. Following injection of the contrast media, the circulation was slow, followed by a phase with arteriolo-venular shunting and poor capillary circulation.

Animals↗
PubMedDate not supplied

Crutch-induced axillary artery injury.

PURPOSE: To describe the spectrum of radiologic findings in crutch-induced axillary artery injury and the effects of its unique pathophysiology on diagnostic evaluation and treatment. METHODS: Three patients with axillary crutch-induced axillobrachial injury were studied angiographically and percutaneous intervention was performed in two cases. RESULTS: One patient required surgical bypass of a thrombosed axillary artery aneurysm. One patient responded to percutaneous transluminal angioplasty (PTA) of a focal axillary artery stenosis. One patient with an axillary artery aneurysm and distal thromboembolic disease was treated by both thrombolysis and surgical thromboembolectomy and later by PTA of an axillary artery intimal disruption. CONCLUSION: Chronic axillary crutch use may be associated with axillary artery stenosis, aneurysm formation, and secondary axillobrachial thromboembolic disease. Mural injury can be successfully treated by PTA and thromboembolic disease by thrombolytic therapy. Early identification of the axillary artery lesion is critical for long-term therapeutic results.

Aged↗
PubMedDate not supplied

Percutaneous endoluminal stent-graft repair of an old traumatic femoral arteriovenous fistula.

A stent-graft was custom made to close a high-flow traumatic arteriovenous fistula of the left superficial femoral artery, present for 30 years, in a 60-year-old man with congestive heart failure and ischemic ulceration in the left foot. A balloon expandable Palmaz stent (P394; 2.5 mm X 3.9 cm) was covered with a polytetrafluoroethylene (PTFE) graft and was inserted percutaneously through an 11 Fr vascular sheath. Follow-up Doppler ultrasound at 6 months demonstrated occlusion of the arteriovenous fistula, patency of the artery, and luminal integrity of the artery and vein.

Arteriovenous Fistula↗
PubMedDate not supplied

Hemobilia: transcatheter occlusive therapy and long-term follow-up.

Eight patients with life-threatening hemobilia were treated by percutaneous transcatheter occlusive therapy. The bleeding was caused by a traumatic pseudoaneurysm of the hepatic artery in 6 cases (auto accident in 4, surgery in 1, biliary drainage in 1) and a true aneurysm of the hepatic artery in 2 (unknown etiology in 1 and mycotic in 1). Arterial catheterization was used in all cases except for one in which a direct percutaneous puncture was performed. Gelfoam alone was used as embolic material in 3 patients. In 1 patient each, the material used was gelfoam plus coils, coils alone, blood clot, n-butyl-cyanoacrylate and an occluding balloon catheter. In all cases the bleeding stopped and did not recur during the follow-up period which ranged from 9 months to 14 years. This experience indicates that transcatheter occlusive therapy is an effective method for the treatment of severe hemobilia.

Adolescent↗
PubMedDate not supplied

Lipiodol retention within hepatic cavernous hemangioma.

Intraarterial injection of Lipiodol has been recommended to differentiate hepatocellular carcinoma from benign lesions such as cavernous hemangioma, because uptake and prolonged retention of the contrast medium is a characteristic of the malignant tumors. In two cases of cavernous hemangioma of the liver in which we injected Lipiodol, uptake and retention up to 3 months was demonstrated. We conclude that the intraarterial injection of Lipiodol may not be reliable in differentiating hepatocellular carcinoma from cavernous hemangioma of the liver.

Adult↗
PubMedDate not supplied

Treating complications of subclavian vein puncture by embolization of the internal mammary artery.

Embolization therapy is reported in 2 patients who had vascular complications following percutaneous subclavian vein catheterization. One had an arteriovenous fistula between the right internal mammary artery (IMA) and the brachiocephalic vein. The other patient presented with a pseudo-aneurysm of the IMA with life-threatening hemorrhage and a large thoracic hematoma. A detachable latex balloon was used for occlusion of the arteriovenous fistula in the first patient and a steel spring coil was used to embolize the IMA and the pseudo-aneurysm in the second patient. The lesions were successfully treated on follow-up of 30 months for the first patient and 37 months for the other.

Adult↗
PubMedDate not supplied

Treatment of thrombosed dialysis access grafts: randomized trial of surgical thrombectomy versus mechanical thrombectomy with the Amplatz device.

PURPOSE: To report the preliminary results in a trial comparing the Amplatz mechanical thrombectomy (MT) device with surgical thrombectomy (ST) to declot occluded dialysis access grafts. PATIENTS AND METHODS: Thirty-seven patients were randomly assigned by computer to either ST (n = 18) or MT (n = 19). Diagnostic fistulograms were obtained at the end of the procedure, and Doppler ultrasound was performed at 1-month follow-up. Plasma free hemoglobin levels were measured before, immediately after, and 24 hours after the procedure in the MT group. Success was defined as initial success with restoration of flow through the graft, primary patency at 30 days, and secondary patency at 30 days. RESULTS: Technical success with MT was 89%. Primary patency in the MT series was 47% and secondary 30-day patency was 68%. Technical success with ST was 83%. Primary patency in the ST series was 77% and secondary patency at 30 days was 77%. Angioplasty (n = 18) and stent placement (n = 6) were performed in the MT cases. Angioplasty was impossible in one patient. Immediately after MT, plasma free hemoglobin levels above normal were noted in 63% of the cases, but these levels were within normal levels after 24 hours in 88% of the cases. CONCLUSION: Initial success of MT in patients with occluded dialysis access grafts is comparable to that of ST. No statistically significant differences in primary or secondary patencies were seen.

Arteriovenous Shunt, Surgical↗
PubMedDate not supplied

Massive pulmonary embolism: preliminary results of treatment with the Amplatz thrombectomy device.

PURPOSE: To determine the feasibility of using the Amplatz thrombectomy device (ATD) to treat massive pulmonary embolism (PE). PATIENTS AND METHODS: Five patients (four men, one woman; mean age, 45.2 years) with massive PE underwent mechanical thrombectomy with the ATD, which creates a vortex that pulverizes and recirculates the clots within the pulmonary circulation. The patients were followed up for 7-18 months after thrombectomy. RESULTS: Marked improvement in pulmonary perfusion was observed in three patients at angiography and ventilation-perfusion scanning. No changes could be assessed in one patient who died shortly after the procedure. One patient developed hemoptysis during the procedure, most likely because of a reperfusion syndrome. A reduction in pulmonary artery pressure was observed in only one patient; the remaining patients had increased pressure. The four surviving patients were discharged within 8 days. CONCLUSION: Mechanical thrombectomy with the ATD provides rapid debulking of thrombus in some patients with massive PE and has the potential to improve treatment and outcomes of the most sick patients.

Adult↗