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Biomedical subjects

U Albrechtsson

Publications and source records attributed to U Albrechtsson.

78 records · Page 5Linked to original sources
PubMedDate not supplied

Nephrotoxicity of ionic and non-ionic contrast media in aorto-femoral angiography.

Nineteen patients examined with aorto-femoral angiography were randomized into two contrast medium groups (meglumine metrizoate and iohexol). Urine activity of beta-hexosaminidase, a specific renal enzyme, was determined before and on three occasions after angiography. No change of beta-hexosaminidase activity was found after angiography with iohexol, while there was a significant increase after examination with meglumine metrizoate. This indicates that meglumine metrizoate even following injection into the abdominal aorta damages renal cells which could not be shown with iohexol as contrast medium. We therefore recommend that at least patients with impaired renal function should be examined with the non-ionic contrast medium iohexol to minimize the danger of further damage to the kidneys and a possible renal failure.

Aged↗
PubMedDate not supplied

Assessment of digital chest radiography using stimulable phosphor.

In this pilot study, conventional and digital radiography of the chest was compared in 170 patients. Two digitized radiographs, one frequency modified and one simulating the conventional film-screen combination, and the conventional films were reviewed independently by 5 radiologists with different experience. In spite of the smaller size and lower spatial resolution of the digitized compared with the conventional radiograph, only slight differences were revealed in the observation of different pulmonary and mediastinal changes. Digitized radiography is therefore considered suitable for chest examinations.

Adolescent↗
PubMedDate not supplied

Spontaneous resolution of a descending aortic dissection. Report of a case.

The natural history of an aortic dissection is either endothelialization of the false lumen forming a so-called double-barrelled aorta, or thrombosis of the sack leading to fibrosis and scarring. Complete healing of an aortic dissection is extremely rare, and has to our knowledge only been reported once in vivo. Here we report a second case of spontaneous resolution of an aortic dissection, disclosed by contrast medium enhanced computed tomography.

Aged↗
PubMedDate not supplied

Intra-operative digital angiography as a control of the in situ saphenous vein by-pass grafts.

Forty-two patients undergoing in situ saphenous vein by-pass grafting procedures, in two patients bilaterally, were examined intra-operatively with digital subtraction angiography. In 19 (43%) of the examinations the graft and the anastomoses appeared adequate. In 8 cases (18%) significant abnormalities were found, including stenoses (11%), deficient anastomoses (5%) and graft kinking (2%). Remaining arteriovenous fistulas were found in 17 patients (39%). In most cases immediate correction was possible avoiding later re-operation. At follow up 11 of the 44 grafts were occluded, 10 of these during the first five months and of these five during the first week.

Adult↗
PubMedDate not supplied

Thrombectomy and temporary AV-fistula in iliofemoral vein thrombosis. Technical considerations and early results.

Seventy patients with iliofemoral vein thrombosis were operated on with thrombectomy and a temporary arteriovenous fistula (AVF). Diagnosis was always verified with a three-stage venography. The result of the treatment was evaluated with arteriovenography before closing the AVF at a second operation. The AVF stayed patent in 85% and occluded in 15% of the evaluated 60 legs. In patients with patent AVF the common femoral and iliac veins were normal in 37% and in 51% there was a stenosis in either of these veins. Occlusion of the veins in spite of patent AVF was found in 12%. No major pulmonary embolism occurred. The most common complication was wound infection (26%). Technical details of the operative procedure experienced from this study are stressed in the paper.

Adolescent↗