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Query: UMLS:C0162871 (abdominal aortic aneurysm)
 8,664 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

A persisting incidence of acute renal failure has been observed after operative treatment of thoracoabdominal aortic aneurysm, ruptured abdominal aortic aneurysm and renal artery occlusive disease in patients with preoperative impairment of renal function. Because preservation of kidney function can play an important role in the outcome of these patients, the effects of prostaglandin E1 (PGE1) to prevent ischaemic renal failure were studied in an experimental model. Twenty dogs were exposed to 3 h warm ischaemia by clamping of the supra- and infrarenal aorta and both renal arteries. In 10 dogs PGE1 was given intravenously (100 ng/kg/min) for 15 min before clamping. Ten dogs treated with normal saline served as controls. Glomerular filtration rate, renal plasma flow, plasma creatinine, blood urea nitrogen, urine volume, free water clearance and renovascular resistance were calculated before and after renal ischaemia for both groups. The dogs were followed-up for 2 weeks and radionuclide studies with Tc-99m-MAG3, I-131-OIH and In-113m-DTPA were performed on the third postoperative day to calculate global and split renal clearance, tracer extraction fraction and mean transport time. After renal ischemia 9 dogs of the control group and 3 dogs of the PGE1-group developed acute renal failure (P less than 0.05 due to Fisher's exact text). PGE1 infusion significantly attenuated the postischaemic fall in glomerular filtration rate and renal concentrating ability as well as the postischaemic increase of plasma creatinine and blood urea nitrogen induced by 3 h warm renal ischaemia (P less than 0.05).(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:Winner of the ESVS Prize 1988. Effects of prostaglandin E1 (PGE1) on experimental renal ischaemia. 265 70

Inflammatory abdominal aortic aneurysm is an uncommon disorder characterized by marked thickening and extensive inflammatory changes of the aneurysmal wall. The appearances of an inflammatory abdominal aortic aneurysm on dynamic Gd-DTPA enhanced magnetic resonance imaging are described and the value of this modality in achieving a pre-operative diagnosis is emphasized.
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PMID:Case report: inflammatory abdominal aortic aneurysm--dynamic Gd-DTPA enhanced magnetic resonance imaging features. 773 76

We have developed magnetic resonance dynamic subtraction angiography (MRDSA), which depicts the long segments of arteries from the upper abdomen to the lower leg by using a small dose of Gd-DTPA. The lower half of the body was divided into three imaging regions, abdomen, thigh and lower leg, in the order of scanning. The contrast-enhanced three-dimensional breath-hold fast field echo technique with half Fourier acquisition was performed in 3 normal volunteers and 12 patients with vascular diseases (4: abdominal aortic aneurysm, 8: atherosclerotic occlusive disease). The images were reconstructed into composite images by using maximum-intensity-projection postprocessing after the subtraction of precontrast images. A bolus intravenous injection of a small dose of Gd-DTPA (0.02-0.05 mmol/kg) was given, followed by the five sets of scans. The acquisition time of each set was 8 to 16 seconds, and the total dose used in MRDSA was 0.1 to 0.15 mmol/kg. The image quality of MRDSA was satisfactory in 3 normal volunteers and 12 patients with vascular diseases. MRDSA demonstrated aortic aneurysm and atherosclerotic obstruction as clearly as conventional angiography. MRDSA can replace conventional angiography.
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PMID:[MR dynamic subtraction angiography (MRDSA)]. 903 66

Some patients cannot undergo coronary angiography (CAG) because of the adverse effects of contrast media. In the present study gadolinium, (gadodiamide hydrate: Gd DTPA-BMA) commonly used for magnetic resonance imaging (MRI), was used as the contrast agent for diagnostic CAG in 3 patients with severe allergy to iodine or iodinated contrast agents. The indications for CAG were recurrent chest pain, evaluation of peri-operative risk of gastric cancer and abdominal aortic aneurysm, and evaluation of graft patency after coronary artery bypass grafting. The procedure was well tolerated by each patient and the amount of the gadolinium-based contrast media did not exceed 40 ml, which is twice the volume used for MRI. The images were of fair quality. In patients with allergy to iodinated contrast media, CAG with gadolinium-based contrast media is an alternative technique for evaluating coronary artery disease.
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PMID:'Gadolinium' as an alternative to iodinated contrast media for X-ray angiography in patients with severe allergy. 1579 Oct 52